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Areas of Interests

Microbiological Engineering: Inactivation/control of pathogenic microorganisms in foods by novel technologies; Bioconversion of agricultural raw and waste commodities into value added products; strain development; novel bioreactors; downstream processing.

Teaching

Research

Food Safety Engineering: Inactivation of pathogenic and spoilage microorganisms by using novel processing technologies such as Ozone, Electrolyzed oxidizing (EO) water, Irradiation, Pulsed UV-light, Super critical carbon dioxide.

Current and Former Students

  • Jamie A. Bober, M.S. Student, 2000–2002. Nisin fermentation by Lactococcus lactis subsp. lactis in biofilm reactors using plastic composite supports.
  • Ratna R. Sharma, Ph.D. Student, 2000–2002. Decontamination of alfalfa seeds and sprouts by novel methods.
  • Aman Jalali, Undergraduate Independent Study Student, Spring 2000. Inactivation of Salmonella during composting of food wastes.
  • Angela Mazzoni, Undergraduate Independent Study Student, Fall 2000. Decontamination of alfalfa seeds by supercritical carbon dioxide.
  • Kathiravan Krishnamurthy, M.S. Student, 2001–2002. Inactivation of Salmonella Typhimurium and E. coli O157:H7 on packaged meat during irradiation.
  • Gabrielle Davis, LSC Undergraduate Res. Program Student, Summer 2001. Production of nisin in suspension cell bioreactor.
  • Sara Hillegas, Undergraduate Independent Study Student, Spring 2002. Inactivation of Clostridium sporogenes in honey by pulsed UV-light treatment.
  • Stephen P. Walker, M.S. Student, 2002–2003. Novel method for on_farm CIP cleaning of milking systems.
  • Ennis L. Veale, M.S. Student, 2002–2003.On-line monitoring fermentation process by using spectroscopic methods.
  • Katherine L. Bailka, M.S. Student, 2002–2003. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs.
  • Deniz Cekmecelioglu, Ph.D. Student, 2002–2004. Fate of pathogenic microorganisms in food waste composting.
  • Mark Bechara, Graduate Independent Study Student, Summer 2004. The effect of calcium and magnesium on the production of nisin.
  • Beatrice Sirakaya, Graduate Independent Study Student, Fall 2004. Industrial grade media evaluation for ethanol fermentation by Saccharomyces cerevisiae.
  • Thunyarat Pongtharangkul, Ph.D. Student, 2002–2005. Enhanced nisin production and separation from fermentation broth.
  • Kathiravan Krishnamurthy, Ph.D. Student, 2002–2006. Decontamination of Milk and Water by Pulsed UV-light and Infrared Heating.
  • Todd J. Miserendino, M.S. Student, 2005–2006. Nisin production by immobilized cell fermentation.
  • Katherine L. Bialka, Ph.D. Student, 2003–2006. Decontamination of berries with ozone and pulsed UV light.
  • Eric Huang, M.S. Student, 2006–2007. Enhanced human lysozyme production by Kluyveromyces lactis K7.
  • Nene M. Keklik, Ph.D. Student, 2006–2009. Decontamination of poultry by pulsed UV-light.
  • Kuan-Chen Cheng, Ph.D. Student, 2007–2010. Microbial cellulose production by using biofilm reactors.
  • Gulten Izmirlioglu, M.S. Student, 2008–2010. Ethanol Production from Waste Potato Mash by Saccharomyces cerevisiae.
  • Debleena Dasgupta, Graduate Independent Study Student, Spring 2009. Industrial grade media evaluation for ethanol fermentation by Xymomonas mobilis.
  • Jimmy Truong, Undergraduate Independent Study Student, Spring 2009. Production of ethanol from sugar beets.
  • Duygu Ercan, Ph.D. Student, 2010–. Production of human by using biofilm reactors.
  • Gulten Izmirlioglu, Ph.D. Student, 2010–. Simultaneous saccharification and fermentation for production of ethanol from waste mash potato in biofilm reactors.
  • Hasan Bugra Coban, Ph.D. Student, 2011–. Conversion of amino Acids to their specific alpha-keto acids by microbial fermentation.
  • Xinmiao Wang, Ph.D. Student, 2011–. Evaluation and optimization of electrolyzed oxidizing water as a novel cleaning-in-place approach for milking systems.
  • Fidan Ozge Can, M.S. Student, 2011–. Surface decontamination of packaged hard cheeses by pulsed-UV processing as a novel technology.

Postdoctorate Research Associates and Visiting Scientists

  • Nil P. Ozer, Visiting Scientist, Feb. 2003–Jan. 2004. Decontamination of sea foods by novel methods.
  • Katherine L. Bailka, Postdoctorate Research Associate, Jun. 2007–May 2008. Evaluation of pretreated feedstocks for the production of ethanol by fermentation.
  • Irfan Turhan, Visiting Scientist, Sept. 2007–Aug. 2008. Ethanol and lactic acid production from carob extracts.
  • Shumei Cheng, Visiting Scientist, Aug. 2009–Feb. 2010. Pullulan production by immobilized cell fermentation.
  • Satyanarayandev R. Sivarama, Post-doctorate Research Associate, Dec. 2010–Aug. 2011. Novel CIP cleaning approach for on- farm milking systems and processing equipment

Funded Projects

  • Pometto, A. L., and A. Demirci. 1997-2000. Enhanced lactic acid fermentation/recovery with emulsion liquid membrane and with immobilized carrier hollow-fiber contactor. National Corn Growers Association and Iowa Corn Promotion Board.
  • Demirci, A., L. R. Beuchat, K. H. McWatters, and W.F. Fett. 2000-2002. Decontamination of alfalfa seeds and sprouts by ozonation. USDA - National Alliance for Food Safety.
  • Cutter, C. N., and A. Demirci. 2000-2001. Comparison of electrolyzed oxidizing water with various antimicrobial interventions to reduce Salmonella on poultry. 2000 Pennsylvania Poultry Broiler/Egg Check-Off Program.
  • Demirci, A., R. Rao, and R. E. Graves. 2001-2003. Fate of pathogenic microorganisms in farm composting systems. Pennsylvania Department of Agriculture.
  • Cutter, C. N., and A. Demirci. 2001-2002. Optimization of electrolyzed oxidizing water and comparison with other antimicrobial compounds to reduce pathogens on fresh or further processed port products. National Pork Producer Council.
  • Demirci, A., V. M. Puri, C.N. Cutter. 2001-2001. Low dose irradiation of meats packaged with polylactic acid plastic for inactivation of Salmonella Typhimurium and E. coli O157:H7. Penn State College of Agricultural Sciences.
  • Irudayaraj, J., and A. Demirci. 2001-2001. Detecting Salmonella using biosensors. Penn State College of Agricultural Sciences.
  • Cutter, C. N., and A. Demirci. 2001-2001. Optimization of electrolyzed oxidizing water and comparison with other antimicrobial compounds to reduce Listeria monocytogenes on ready-to eat-meat products. Penn State College of Agricultural Sciences.
  • Demirci, A., R. E. Graves, S. B. Spencer. 2001-2003. Novel method for on-farm CIP cleaning of milking systems. USDA – Special Research Grants- Milk Safety.
  • Puri, V. M., A. Demirci, S. Knabel, J. Irudayaraj. 2001-2003. A dynamic computational model for Listeria monocytogenes growth in cheese. USDA – Special Grant-Milk Safety.
  • Floros, J. D., R. F. Roberts, S. Doores, J. L. Brown, V. M. Puri, A. Demirci, J. Irudayaraj, J. James, E. Jaenicke, B. Jayarao, L. Sordillo. 2002-2004. Regulation, Risk and Return: A Food Systems Approach to Dairy Product Safety. USDA – Special Grant-Milk Safety.
  • Demirci, A., and J. Irudayaraj. Pulse light sterilization system. 2001. NASA Food Technology Commercial Space Center - Equipment Grant.
  • Demirci, A. 2001. Inactivation of Saccharomyces cerevisiae by ozone and electrolyzed oxidizing water. Diamond V.
  • Beelman, R. B., L. LaBorde, A. Demirci, and D. M. Beyer. 2002-2004. Development of cultural and postharvest practices to reduce bacterial populations on fresh mushroom. Pennsylvania Department of Agriculture.
  • Demirci, A. S. J. Knabel, P. H. Patterson, V. M. Puri. 2003. Electrolyzed oxidizing water as a novel method for egg washing. Penn State Center for Food Manufacturing.
  • Etherton, T. D., D. Buckmaster, A. Demirci. A. J. Heinrichs, G.W. Roth, G. Varga. 2003-2005. The improved dairy management practices. USDA – Special Research Grants.
  • LaBorde, L. F., A. Demirci, H. Gourama, and D. A. Rosenberger. 2003-2006. Multiple strategies for control of patulin in apples and apple products - An Integrated Regional Research and Extension Project. USDA National Integrated Food Safety Initiative.
  • Knabel, S.J., R.C. Anantheswaran, S. Doores, J. Irudayaraj, F. Roberts, A. Demirci, V.M. Puri, H. Gourama, J. Coupland, K. Hoover, R. Owusu-Apenten, C.N. Cutter, J.L. Brown. 2004-2006. Developing new technologies and programs to enhance the safety and security of dairy products. USDA – Special Research Grants.
  • Wolfgang, D.R., C. Williams, R.E. Graves, A. Demirci, B.M. Jayarao, D. Key, K. Kephart . 2005-2007. Pathogen reduction in whole carcass composting. Pennsylvania Department of Agriculture.
  • Demirci, A. 2005-2006. Decontamination of blueberry by ozone and pulsed UV light. U.S. Highbush Blueberry Council.
  • Demirci, A. and V.M. Puri. 2007-2008. Decontamination of poultry by pulsed UV-light treatment. PA Poultry Check-off Program.
  • Demirci, A. 2007-2008. Evaluation of pre-treated feedstock for the production of ethanol by fermentation. SWAN Biomass Company.
  • Demirci, A. and J. Catchmark. 2008-2009. Enhanced cellulose production by Acetobacter xylinum in biofilm reactors. Penn State College of Agricultural Sciences.
  • Demirci, A., E. Hovingh, R. Roberts, R. Graves, D. Wolfgang, C. DebRoy, R. Radhakrishna, B. Jayarao. 2010-2012. Milking safety improvements for milking equipment and raw milk production. USDA – Special Research Grants.

Publications

Refereed Journal Articles

  • Demirci, A., and A. L Pometto III. 1992. Enhanced production of D(-) lactic acid by mutant of Lactobacillus delbrueckii ATCC 9649. J. Ind. Microbiol. 11:23-28.
  • Demirci, A., A. L Pometto III, and K. E. Johnson. 1993. Evaluation of biofilm reactor solid support for mixed culture lactic acid production. Appl. Microbiol. Biotechnol. 38:728-733.
  • Demirci, A., A. L. Pometto III, and K. E. Johnson. 1993. Lactic acid production in a mixed culture biofilm reactor. Appl. Environ. Microbiol. 59:203-207.
  • Demirci, A., and A. L Pometto III. 1994. Repeated-batch fermentation in biofilm reactors with plastic-composite supports for lactic acid production. Appl. Microbiol. Biotechnol. 43:585-589.
  • Ho, G.K.L., A. L. Pometto III, P. N. Hinz, and A. Demirci. 1997. Nutrient leaching and end product accumulation in plastic composite supports for L(+)-lactic acid biofilm fermentation. Appl. Environ. Microbiol. 3:2524-2532.
  • Demirci, A., A. L. Pometto III, and K. L. G. Ho. 1997. Enhanced ethanol production by Saccharomyces cerevisiae in biofilm reactors. J. Industrial Microbiol. and Biotechnol. 19:299-304.
  • Ho, G. K. L., A. L. Pometto III, P. N. Hinz, J. S. Dickson, and A. Demirci. 1997. Ingredient selection for plastic composite supports used for L(+)-lactic acid biofilm fermentation by Lactobacillus casei subs. rhamnosus. Appl. Environ. Microbiol. 63:2516-2523.
  • Demirci, A., A. L. Pometto III, B. Lee, and P. N. Hinz. 1998. Media evaluation of lactic acid repeated batch fermentation with Lactobacillus plantarum and Lactobacillus casei subsp. rhamnosus. J. Agric. Food Chem. 46:4771-4774.
  • Lee, B., A. L. Pometto III, A. Demirci, and P. N. Hinz. 1998. Media evaluation for the production of microbial enzymes. J. Agric. Food Chem. 46:4775-4778.
  • Demirci, A., A. L. Pometto III, and J. D. Cox. 1999. Enhanced organically bound selenium yeast production by fed-batch fermentation. J. Agric. Food Chem. 47:2496-2500.
  • Demirci, A., and A. L. Pometto III. 1999. Production of organically bound selenium yeast by continuous fermentation. J. Agric. Food Chem. 47:2491-2495.
  • Demirci, A., A.L. Pometto III, and K.R Harkins. 1999. Rapid screening of solvents and carrier compounds for lactic acid recovery by emulsion liquid extraction and toxicity on Lactobacillus casei (ATCC 11443). Bioseparation. 7:297-308.
  • Demirci, A., and A. L. Pometto III. 2000. Enhanced organically bound chromium yeast production. J. Agric. Food Chem. 48:531-536.
  • Velazquez A.C., A. L. Pometto III. K.L.G. Ho, A. Demirci. 2001. Evaluation of plastic-composite supports in repeated fed-batch biofilm lactic acid fermentation by Lactobacillus casei. Appl. Microbiol. Biotechnol. 55: 434-441.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2001. Monitoring a bioprocess for ethanol production using FT-MIR and FT-Raman spectroscopy. J. Ind. Microbiol. Biotechnol. 26:185-190.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2001. Simultaneous determination of multiple components in Lactobacillus casei fermentation system using FT-MIR, NIR and FT-Raman spectroscopy. Process Biochem. 37: 371–378.
  • Sirakaya, B., J. Gerber, and A. Demirci. 2001. Fermentation software for bioprocessing: Monitoring growth conditions without programming expertise. Genetic Eng. News. 21 (13):40 & 71.
  • Mazzoni, A.M., R.R. Sharma, A. Demirci, and G.R. Ziegler . 2001. Supercritical carbon dioxide treatment for microbial safety of alfalfa seeds. J. Food Safety. 21:215-223.
  • Sharma, R.R., A. Demirci, L.R. Beuchat, and W.F. Fett. 2002. Inactivation of Escherichia coli O157:H7 on inoculated alfalfa seeds with ozonated water and heat treatment. J. Food Prot. 65:447-451.
  • Sharma, R. R., A. Demirci, L. R. Beuchat, and W. F. Fett. 2002. Inactivation of Escherichia coli O157:H7 on inoculated alfalfa seeds with ozonation under pressure. J. Food Safety. 22:107-119.
  • Fabrizio, K.A, R.R. Sharma, A. Demirci, and C.N. Cutter. 2002. Comparison of electrolyzed oxidizing water with various antimicrobial interventions to reduce Salmonella on poultry. J. Poultry Sci. 81:1598-1605.
  • Demirci, A. 2002. Novel processing technologies for food safety. J. Association of Food and Drug Officials. 66(4):43-50.
  • Wade, W. N., A. J. Scouten, K. M. McWatters, R.L. Wick, A. Demirci, W.F. Fett, and L.R. Beuchat. 2003. Efficacy of ozone in killing Listeria monocytogenes on alfalfa seeds and sprouts, and effects on sensory quality of sprouts. J. Food Protection. 66:44-51.
  • Sharma, R. R., A. Demirci, L. R. Beuchat, and W. F. Fett. 2003. Application of ozone for inactivation of Escherichia coli O157:H7 on inoculated alfalfa sprouts. J. Food Processing and Preservation. 27:51-64.
  • Sharma, R. R., A. Demirci. 2003. Inactivation of E. coli O157:H7 on alfalfa seeds with pulsed ultraviolet light and response surface modeling. J. Food Science. 68:1448-1453.
  • Urbance, S. E., A. L. Pometto III, DiSpirito, A., A. Demirci. 2003. Medium evaluation and plastic composite support ingredient selection for biofilm formation and succinic acid production by Actinobacillus succinogenes. Food Biotechnol. 17:53-65.
  • Sharma, R. R., and A. Demirci. 2003. Treatment of E. coli O157:H7 inoculated alfalfa seeds and sprouts with electrolyzed oxidizing water. Intl. J. Food Microbiol. 86:231-237.
  • Demirci, A., A. L Pometto III, J. Cotton, K. R Harkins, and P. N. Hinz. 2003. Resistance of Lactobacillus casei in PCS biofilm reactors during liquid membrane extraction and optimization of the lactic acid extraction system. Biotechnol. Bioeng. 83:749-759.
  • Hillegas, S. L. and A. Demirci. 2003. Inactivation of Clostridium sporogenes in clover honey by pulsed UV-light treatment. CIGR J. AE Sci. Res. Dev. Manuscript FP 03-009. Vol. V. 7 pp.
  • Jun, S., J. Irudayaraj, A. Demirci, and D. Geiser. 2003. Pulsed UV-light treatment of corn meal for inactivation of Aspergillus niger. Int. J. Food Sci. Technol. 38:883-888.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Inactivation of Staphylococcus aureus by pulsed UV-light treatment. J. Food Prot.67:1027-1030.
  • Sharma, R. R., A. Demirci, and V. M. Puri. 2004. Modeling of microbial inactivation of E. coli O157:H7 on alfalfa seeds for ozonation, electrolyzed oxidizing water, and pulsed UV light sterilization. ASAE Trans. 47:173-181.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2004. Simultaneous determination of multiple components in nisin fermentation using FT-MIR spectroscopy. CIGR J. AE Sci. Res. Dev. Manuscript FP 03-008. Vol.VI. 16 pp.
  • Bober, J. A. and A. Demirci. 2004. Nisin fermentation by Lactococcus lactis subsp. lactis using plastic composite supports (PCS) in biofilm. The CIGR Journal of AE Scientific Research and Development. Manuscript FP 04-001. Vol. VI. 15 pp.
  • Pongtharangkul, T., and A. Demirci. 2004. Evaluation of agar well diffusion method for nisin quantification. Appl. Microbiol. Biotechnol. 65: 268–272.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2004. Effect of Packaging Materials on Inactivation of Pathogenic Microorganisms on Meat during Irradiation. ASAE Trans. 47:1141-1149.
  • Bialka, K. L., A. Demirci, S. J. Knabel, P. H. Patterson, and V. M. Puri. 2004. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs. Journal of Poultry Science. 83:2071-2078.
  • Morawicki, R. O., R B. Beelman, D. Peterson, A. Demirci. 2005. Biosynthesis of 1-octen-3-ol and 10-oxo-trans-8-decenoic acid using a crude homogenate of Agaricus bisporus: Reaction Scale Up. Journal of Food Science 70: E367-E371.
  • Cekmecelioglu, D., A. Demirci, R. E. Graves, and N. H. Davitt. 2005. Optimization of windrow food waste composting to inactivate pathogenic microorganisms. Transactions of ASAE. 48(5): 2023-2032.
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2005. Feedstock optimization of in-vessel food waste composting systems for inactivation of pathogenic microorganisms. Journal of Food Protection. 68:589-596.
  • Cekmecelioglu, D., A. Demirci, R. E. Graves, and N. H. Davitt. 2005. Applicability of the optimized in-vessel food waste composting for windrow systems. Biosystems Engineering. 91:479-486.
  • Walker, S. P., A. Demirci, R. E. Graves, S. B. Spencer, and R. F. Roberts. 2005. Response surface modeling for cleaning and disinfecting materials used in milking systems with electrolyzed oxidizing water. International Journal of Dairy Technology. 58:65-73.
  • Cekmecelioglu, D., P. H. Heinemann, A. Demirci, and R. E. Graves. 2005. Modeling of compost temperature and inactivation of Salmonella and E. coli O157:H7 during windrow food waste composting. Transactions of ASAE. 48:849-858.
  • Walker, S. P., A. Demirci, R. E. Graves, S. B. Spencer, and R. F. Roberts. 2005. Cleaning of a pipeline milking system using electrolyzed oxidizing water. Transactions of ASAE. 48(5): 1827-1833.
  • Ozer, N. P. and A. Demirci. 2006. Electrolyzed oxidizing water treatment for decontamination of raw salmon inoculated with Escherichia coli O157:H7 and Listeria monocytogenes Scott A and Response Surface Modeling. Journal of Food Engineering. 72(3):234-241.
  • Ozer, N. P. and A. Demirci. 2006. Inactivation of Escherichia coli O157:H7 and Listeria monocytogenes inoculated on raw salmon fillets by pulsed-UV light treatment. International Journal of Food Science and Technology. 41 (4): 354-360.
  • Pongtharangkul, T. and A. Demirci. 2006. Evaluation of culture medium for nisin production in repeated-batch biofilm reactor. Biotechnology Progress. 22 (1): 217-224.
  • Okull, D., Demirci, A., Rosenberger, D., and LaBorde, L. 2006. Susceptibility of Penicillium expansum spores to sodium hypochlorite, electrolyzed oxidizing water, and chlorine dioxide solutions modified with nonionic surfactants. Journal of Food Protection. 69(8):1944-1948.
  • Pongtharangkul, T. and A. Demirci. 2006. Effects on pH profiles on nisin production in biofilm reactor. Applied Microbiology and Biotechnology. 71(6): 804-811.
  • Pongtharangkul, T. and A. Demirci. 2006. Effects of fed-batch fermentation and pH profiles on nisin production in suspended-cell and biofilm reactors. Applied Microbiology and Biotechnology. 73(1): 73-79.
  • Demirci, A. and K. Krishnamurthy. 2006. Disinfection of water by flow-through Pulsed ultraviolet light sterilization system. Ultrapure Water Journal. 24 (1): 35-40.
  • Liu, S., V. M. Puri and A. Demirci. 2007. Spatial distribution of population of Listeria monocytogenes during manufacturing and ripening of Camembert cheese. Journal of Food Safety. 27 (1): 43-55.
  • Pongtharangkul, T. A. Demirci. 2007. Online recovery of nisin during fermentation and its effect on nisin production in biofilm reactor. Applied Microbiology and Biotechnology. 74 (3): 555-562.
  • Veale, E. L., J. Irudayaraj, and A. Demirci. 2007. An on-line approach to monitor ethanol fermentation using FTIR spectroscopy. Biotechnology Progress. 23 (2): 494-500.
  • Bialka, K. L. and A. Demirci. 2007. Utilization of gaseous ozone for the decontamination of Escherichia coli O157 : H7 and Salmonella on raspberries and strawberries. Journal of Food Protection. 70 (5): 1093-1098.
  • Bialka, K. L. and A. Demirci. 2007. Efficacy of aqueous ozone for the decontamination of Escherichia coli O157:H7 and Salmonella on raspberries and strawberries. Journal of Food Protection. 70 (5): 1088-1092.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2007. Inactivation of Staphylococcus aureus in milk using flow-through pulsed UV-light treatment system. Journal of Food Science. 72 (7) M233-M239.
  • Bialka K. L., A. Demirci. 2007. Decontamination of Escherichia coli O157:H7 and Salmonella Enterica on blueberries using ozone and pulsed UV-Light. Journal of Food Science 72 (9): M391-M396.
  • Bialka, K. L., A. Demirci, V.M. Puri. 2008. Modeling the inactivation of Escherichia coli O157:H7 and Salmonella Enterica on raspberries and strawberries resulting from exposure to ozone or pulsed UV-light. Journal of Food Engineering. 85 (3): 444-449.
  • Krishnamurthy, K., H. K. Khurana, S. Jun, J. Irudayaraj and A. Demirci. 2008. IR Heating in food processing: An overview. Comprehensive Reviews in Food Science and Food Safety. 7(1): 2-13.
  • Bialka, K.L., P. N. Walker, V. M. Puri, and A. Demirci. 2008. Pulsed UV-light penetration of characterization and the inactivation of Escherichia coli K12 in solid model systems. Transactions of the ASABE. 51(1): 195-204.
  • Miserendino, T., A. Demirci, and T. Pongtharangkul. 2008. Nisin production by immobilized microbial cell culture during batch and fed-batch fermentations with various pH profiles. CIGR J. AE Sci. Res. Dev. Manuscript FP 07-016. Vol. X. 17 pp.
  • Bialka, K. L., and A. Demirci. 2008. Efficacy of Pulsed UV-Light for the Decontamination of Escherichia coli O157:H7 and Salmonella spp. on Raspberries and Strawberries. Journal of Food Science. 73(5):M201-M207.
  • Krishnamurthy, K., S. Jun, J. Irudayaraj, and A. Demirci. 2008. Efficacy of infrared heat treatment for inactivation of Staphylococcus aureus in milk. Journal of Food Process Engineering. 31(6):798-816.
  • Pongtharangkul, T. A. Demirci, V. M. Puri. 2008. Modeling of growth and nisin production Lactococcus lactis during batch fermentation. Biological Engineering 1(3): 265-275.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2008. Inactivation of Staphylococcus aureus in milk and milk foam by pulsed UV-light treatment and surface response modeling. Transactions of the ASABE. 51(6): 2083-2090.
  • Novak, J., A. Demirci, and Y. Han. 2008. Novel chemical processes: Ozone, supercritical CO2, electrolyzed oxidizing water, and chlorine dioxide gas. Food Science and Technology International. 14:437-441.
  • Demirci, A. and L. Panico. 2008. Pulsed ultraviolet light. Food Science and Technology International. 14:443-446.
  • Liu, S., V. M. Puri and A. Demirci. 2009. Evaluation of Listeria innocua as a suitable indicator for replacing Listeria monocytogenes during ripening of Camembert cheese. International Journal of Food Science and Technology. 44:29–35.
  • Huang, E. L. and A. Demirci. 2009. Enhanced human lysozyme production by Kluyveromyces lactis. Food Bioprocess Technol. 2:222–228.
  • Bechara, M.A., Heinemann, P.H., Walker, P.N., Demirci, A., Romaine, C.P. 2009. Evaluating the addition of activated carbon to heat treated mushroom casing for grain-based and compost-based substrates. Bioresource Technology. 100 (19): 4441-4446.
  • Keklik, N. M., A. Demirci, and V. M. Puri. 2009. Decontamination of unpackaged and vacuum-packaged chicken frankfurters with pulsed UV-light. Food Science. 74:M431-M439.
  • Cheng, K. C., J. M. Catchmark, and A. Demirci. 2009. Enhanced production of bacterial cellulose by using a biofilm reactor and its material property analysis. Journal of Biological Engineering, 3:12. 10 pp.
  • Demirci, A. 2009. Pulsed UV-light research at Penn State University. Non-thermal Processing Division Newsletter. 10(3):7-10.
  • Keklik, N. M., and A. Demirci. 2009. Pulsed UV-light: Advantages for food decontamination. Resource Magazine of American Society of Agricultural Engineers. July/August:18-19.
  • Cheng, K. C., A. Demirci, and J. Catchmark. 2009. Effect of different additives on bacterial cellulose production by Acetobacter xylinum and analysis of material property. Cellulose 16:1033-1045.
  • Cheng, K. C., J. M. Catchmark, and A. Demirci. 2009. Production and application of bacterial cellulose. Current Topics in Biotechnology. 5:1-20.
  • Cheng, K-C, A. Demirci, and J. M. Catchmark. 2009. Current knowledge of pullulan from production to application. Current Topics in Biotechnology. 5:29-48.
  • Cheng, K. C., A. Demirci, and J. Catchmark. 2010. Advances in biofilm reactors for production of value-added products. Applied Microbiology and Biotechnology. 87(2):445-456. DOI: 10.1007/s00253-010-2622-3.
  • Cheng, K. C., A. Demirci, and J. M. Catchmark. 2010. Enhanced pullulan production in a biofilm reactor by using response surface methodology. Journal of Industrial Microbiology & Biotechnology. 37(6): 587-594. DOI: 10.1007/s10295-010-0705-x.
  • Turhan, I., K. L. Bialka, A. Demirci, and M. Karhan. 2010. Ethanol production from carob extract by using Saccharomyces cerevisiae. Bioresource Technology. 101(14):5290-5296. doi:10.1016/j.biortech.2010.01.146.
  • Cheng, K. C., A. Demirci, and J. Catchmark. 2010. Effects of plastic composite support and pH profiles on pullulan production in a biofilm reactor. Applied Microbiology and Biotechnology. 86(3):853-861. DOI: 10.1007/s00253-009-2332-x.
  • Cheng, K. C., A. Demirci, J. M. Catchmark, and V. M. Puri. 2010. Modeling of pullulan fermentation by using a color variant strain of Aureobasidium pullulans. J. Food Engineering. 98: 353–359. doi:10.1016/j.jfoodeng.2010.01.011.
  • Keklik, N. M., A. Demirci, and V. M. Puri. 2010. Decontamination of unpackaged and vacuum packaged boneless chicken breast with pulsed UV-light. Poultry Science. 89:570-581.
  • Krishnamurthy, K., J. C. Tewari, J. Irudayaraj, and A. Demirci. 2010. Microscopic and spectroscopic evaluation of inactivation of Staphylococcus aureus by pulsed UV light and infrared heating. Food Bioprocess Technol. 3:93–104.
  • Keklik, N. M., A. Demirci, P.H. Patterson, and V. M. Puri. 2010. Decontamination of shell-eggs with pulsed UV-light. Food protection. 73 (8), 1408–1415.
  • Turhan, I., K. L. Bialka, A. Demirci, and M. Karhan. 2010. Enhanced lactic acid production from carob extract by Lactobacillus casei. Food Biotechnology. 24:364–374. DOI: 10.1080/08905436.2010.524485.
  • Oner, M., P.N. Walker, and A. Demirci. 2011. Effect of ozone treatment on shelf-life of refrigerated potato strips. International Journal of Food Science and Technology. 46 (2):406-412. DOI: 10.1111/j.1365-2621.2010.02503.x.
  • Cheng, K. C., J. M. Catchmark, and A. Demirci. 2011. Effects of CMC addition on bacterial cellulose production in a biofilm reactor and its paper sheets analysis. Biomacromolecules. 12(3):730-736. DOI: 10.1021/bm101363t.
  • Cheng, K. C., A. Demirci, and J. M. Catchmark. 2011. Effects of initial ammonium ion concentration on pullulan production by Aureobasidium pullulans and its modeling. 103 (2):115-122. DOI: 10.1016/j.jfoodeng.2010.10.004.
  • Cheng, K. C., A. Demirci, and J. M. Catchmark. 2011. Evaluation of medium composition and fermentation parameters on pullulan production by Aureobasidium pullulans. Food Science and Technology International. 17 (2):99-109. DOI: 10.3899/jrheum.100728.
  • Cheng, K. C., A. Demirci, and J. M. Catchmark. 2011. Continuous pullulan fermentation in a Biofilm Reactor. Applied Microbiology and Biotechnology. 90(3): 921-927. DOI: 10.1007/s00253-011-3151-4.
  • Keklik, N. M., A. Demirci, and R. Bock. 2011. Decontamination of whole chicken carcasses by using a pilot-scale pulsed UV-light system. Transactions of ASABE. 54(3): 993-1000.
  • Cheng, K. C., A. Demirci, and J. M. Catchmark. 2011. Pullulan: biosynthesis, production, and applications. Applied Microbiology and Biotechnology 92(1): 29-44. DOI: 10.1007/s00253-011-3477-y.
  • Satyanarayan R. S. D., K. C. Cheng, and A. Demirci. 2011. Electrolyzed oxidizing water technology. Resource Magazine of American Society of Agricultural Engineers. September/October:12-13.
  • Keklik N.M, A., Demirci, V.M. Puri, P.H. Heinemann. 2011. Modeling the inactivation of Salmonella Typhimurium, Listeria monocytogenes, and Salmonella Enteritidis on poultry products exposed to pulsed UV-light. Journal of Food Protection. In-press.

Book Chapters

  • Demirci, A. 2002. Aerobic reactions in fermentation processes. In The Encyclopedia of Agricultural and Food Engineering. D. R. Heldman, Ed. Marcel Dekker, Inc. New York, NY.
  • Pometto III, A. L. and A. Demirci. 2006 Technologies used for microbial production of food ingredients. In Food Biotechnology. 2nd Edition. K. Shetty, G. Paliyath, A. Pometto, and R.E. Levin, Eds. CRC Press, Taylor & Francis Group, Boca Raton, FL.
  • Pometto III, A. L. and A. Demirci. 2007 Technologies used for microbial production of food ingredients. In Functional Foods and Biotechnology. K. Shetty, G. Paliyath, A. Pometto, and R.E. Levin, Eds. CRC Press, Taylor & Francis Group, Boca Raton, FL.
  • Demirci, A., T. Pongtharangkul, and A. L. Pometto III. 2007. Applications of biofilm reactors for production of value-added products by microbial fermentation. In Biofilms in the Food Environment. H. P. Blaschek, H. Wang, and M. Agle, Eds. Blackwell Publishing. Ames, Iowa.
  • Krishnamurthy, K., J. Irudayaraj, S. Jun, A. Demirci and W. Yang. 2008. UV pasteurization of food materials. In Food Processing Operations and Modeling, 2nd edition, Jun, S. and J. Irudayaraj, Eds., CRC Press.
  • Krishnamurthy, K., H.K. Khurana, S. Jun, J. Irudayaraj, and A. Demirci. 2008. Infrared radiation for food processing. In Food Processing Operations and Modeling, 2nd edition, Jun, S. and J. Irudayaraj, eds., CRC Press.
  • Jun, S., Krishnamurthy, K., J. Irudayaraj, and A. Demirci. 2010. Fundamentals and theory of infrared radiation. In Infrared Heating for Food and Agricultural Processing. Z. Pan, Ed. Taylor & Francis Group, New York, NY.
  • Krishnamurthy, K., Jun, S., J. Irudayaraj, and A. Demirci. 2010. Infrared radiation heating for Food Safety Improvement. In Infrared Heating for Food and Agricultural Processing. Z. Pan, Ed. Taylor & Francis Group, New York, NY.
  • Demirci, A. and K. Krishnamurthy. 2011. Pulsed ultraviolet light. In Nonthermal Processing Technologies for Food. H. Zhang, G. Barbosa-Cánovas, V.M. Balasubramaniam, P. Dunne, D. Farkas, and J. Yuan, Eds. Blackwell Publishing. Ames, IA.
  • Demirci, A. and K. L. Bialka. 2011. Electrolyzed oxidizing water. In Nonthermal Processing Technologies for Food. H. Zhang, G. Barbosa-Cánovas, V.M. Balasubramaniam, P. Dunne, D. Farkas, and J. Yuan, Eds. Blackwell Publishing. Ames, IA.
  • Demirci, A. and N.M. Keklik. 2012. Process design involving pulsed UV-light. In Handbook of Food Process Design. M. S. Rahman and J. Ahmed, Eds. Blackwell Publishing Limited, Oxford, UK. In-press.
  • Demirci, A. and M. Ngadi. 2012. Food Decontamination: Novel Methods and Applications. Woodhead Publishing Ltd., Cambridge, UK. In-press.
  • Keklik, N.M., A. Demirci, and K. Krishnamurthy. 2012. Food decontamination by UV and pulsed UV light. In Food Decontamination: Novel Methods and Applications. A. Demirci and M. Ngadi, Eds. Woodhead Publishing Ltd., Cambridge, UK. In-press.
  • Kuan-Chen Cheng, A. Demirci, and K. L. Bialka. 2012. Electrolyzed oxidizing water for food decontamination. In Food Decontamination: Novel Methods and Applications. A. Demirci and M. Ngadi, Eds. Woodhead Publishing Ltd., Cambridge, UK. In-press.
  • Satyanarayan R. S. D., N. M. Keklik, A. Demirci, and G. S. V. Raghavan. 2012. Microbiological safety and sanitation of Eggs. Nova Science Publishers, Inc. Hauppauge, NY. In-press.
  • Demirci, A., G. Izmirlioglu, and D. Ercan. 2012. Fermentation and enzyme technologies in food processing in food processing: In Principles and Applications, 2nd Edition, S. Clark, S. Jung, and B. Lamsal, Eds. Wiley-Blackwell, Hoboken, NJ. In-press.
  • Demirci, A. and D. Ercan. 2012. Current and future trends for biofilm reactors for fermentation processes. In Reprogramming Microbial Metabolic Pathways: Subcellular Biochemistry (Volume 55). X. Wang, J. Chen, and P.J. Quinn, Eds., Springer Science, New York, NY. In-press.
  • Keklik, N.M., and A. Demirci. 2012. Applications and modeling aspects of UV light and pulsed UV light. In Innovations in Food Microbiology. I. S. Boziaris, Ed. Science Publishers, Enfield, NH. In-press.

Conference Articles

  • Demirci, A., A. L. Pometto III, and K. E. Johnson. 1992. Application of biofilm reactors in lactic acid fermentation. Proceedings of the 22nd Annual Biochemical Engineering Symposium. Iowa State University. Ames, IA. pp. 155-164.
  • Demirci, A., A. L. Pometto III, and K. L. G. Ho. 1995. Continuous ethanol production in biofilm reactors containing plastic composite rings and discs. Proceedings of Second Biomass Conference of Americas. Portland, OR. pp 1017-1026.
  • Sharma, R. R, and A. Demirci. 2001. Treatment of E. coli O157:H7 contaminated alfalfa seeds with ozonated water. ASAE 94th Annual International Meeting. Paper No. 016161. Sacramento, CA. 10 pp.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2002. Effect of Packaging Materials on Pathogen Inactivation During Meat Irradiation. Northeast Agricultural and Biological Engineering Conference. Paper No. 02-006. Quebec City, Quebec. 10 pp.
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2002. In-Vessel food waste composting to inactivate pathogenic microorganisms. Northeast Agricultural and Biological Engineering Conference. Paper No. 02-008. Quebec City, Quebec. 14 pp.
  • Sharma, R. R., A. Demirci, L. R. Beuchat, and W. F. Fett. 2002. Inactivation of Escherichia coli O157:H7 on Inoculated Alfalfa Seeds with Low Hydrostatic Ozone Pressure. Northeast Agricultural and Biological Engineering Conference. Paper No. 02-009. Quebec City, Quebec. 9 pp.
  • Walker, S. P., A. Demirci, R. E. Graves, and S. B. Spencer. 2002. Efficacy of electrolyzed oxidizing water to clean milking system materials. Northeast Agricultural and Biological Engineering Conference. Paper No. 02-029. Quebec City, Quebec. 10 pp.
  • Powell, T. B., P. H. Heinemann, and A. Demirci. 2002. Electronic nose detection of E. coli on the surface of apples. ASAE 95th Annual International Meeting. ASAE Paper No. 02-6096. Chicago, IL. 8 pp.
  • Demirci, D., J. C. Cotton, A. L. Pometto III, K.R. Harkins, P.N. Hinz. 2002. Optimization of emulsion liquid extraction system for lactic acid recovery. ASAE 95th Annual International Meeting. Paper No. 02-7002. Chicago, IL. 12 pp.
  • Bober, J. A., and A. Demirci. 2002. Implementation of biofilm reactor for nisin fermentation using reduced nitrogen content media with or without pH control. ASAE 95th Annual International Meeting. Paper No. 02-7008. Chicago, IL. 10 pp.
  • Sharma, R. R., A. Demirci, L. R. Beuchat, and W. F. Fett. 2002. Application of ozone for inactivation of pathogenic microorganisms on alfalfa seeds and sprouts. ASAE 95th Annual International Meeting. Paper No. 02-6018. Chicago, IL. 12 pp.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2002. Effect of packaging materials on inactivation of pathogenic microorganisms on meat during irradiation. ASAE 95th Annual International Meeting. Paper No. 02-7007. Chicago, IL. 10 pp.
  • Demirci, A., and J. Irudayaraj. 2003. Applications of pulsed UV-light processing for ISS and planetary outposts. 33rd International Conference for Environmental Systems. SAE Paper No. 03ICES-53. Vancouver, Canada. 5 pp.
  • Veale, E. L., J. Irudayaraj, and A. Demirci. 2003. A process control approach to optimize ethanol fermentation using FTIR spectroscopy. ASAE 96th Annual International Meeting. Paper No. 02-6018. Las Vegas, NV. 10 pp.
  • Walker, S. P., A. Demirci, R. E. Graves, S. B. Spencer, and R. F. Roberts. 2003. Response surface modeling for cleaning and disinfecting materials used in milking systems with electrolyzed oxidizing water. ASAE 96th Annual International Meeting. Paper No. 03-7018. Las Vegas, NV. 10 pp.
  • Hillegas, S. L., and A. Demirci. 2003. Inactivation of Clostridium sporogenes in clover honey by pulsed UV-light treatment. ASAE 96th Annual International Meeting. Paper No. 03-7017. Las Vegas, NV. 6 pp.
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2003. Applicability of the optimized in-vessel food waste composting for windrow systems. ASAE 96th Annual International Meeting. Paper No. 03-7016. Las Vegas, NV. 15 pp.
  • Walker, S. P., A. Demirci, R. E. Graves, S. B. Spencer, and R. F. Roberts. 2003. CIP cleaning of a pipeline milking system using electrolyzed oxidizing water. ASAE 96th Annual International Meeting. Paper No. 03-6181. Las Vegas, NV. 11 pp.
  • Sharma, R. R., A. Demirci, V. M. Puri, L. R. Beuchat, and W. F. Fett. 2003. Predicting the inactivation of E. coli O157:H7 on alfalfa seeds treated with ozonated and electrolyzed oxidizing water. ASAE 96th Annual International Meeting. Paper No. 03-6121. Las Vegas, NV. 12 pp.
  • Krishnamurty, K., A. Demirci, J. Irudayaraj. 2003. Inactivation of Staphylococcus aureus using pulsed UV treatment. Northeast Agricultural and Biological Engineering Conference. Paper No. 03-037. Storrs, CT. 12 pp.
  • Bialka, K. L., and A. Demirci. 2003. Efficacy of electrolyzed oxidizing water to disinfect eggs. Northeast Agricultural and Biological Engineering Conference. Paper No. 03-036. Stoors, CT. 9 pp.
  • Pongtharankul, T., and A. Demirci. 2003. Evaluation of agar well diffusion method for nisin quantification. Northeast Agricultural and Biological Engineering Conference. Paper No. 03-032. Stoors, CT. 9 pp.
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2003. Applicability of the optimized in-vessel food waste composting for windrow. Northeast Agricultural and Biological Engineering Conference. Paper No. 03-020. Stoors, CT. 18 pp.
  • Demirci, A., L. R. Beuchat, K. H. McWatters, and W. F. Fett. 2003. Decontamination of alfalfa seeds and sprouts by ozonation. A Mini-Symposium on Research Accomplishments on Food Safety. The Agricultural Research Service in the National Alliance for Food Safety. New Orleans, LA. 6 pp.
  • Pongtharangkul, T., and A. Demirci. 2004. Application of biofilm reactors for production of value added products by microbial fermentation. IBE Paper No. 2-3. Proceesings of Annual International Meeting of The Institute of Biological Engineering. Fayetteville, AR. 13 pp.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Milk pasteurization by pulsed UV-light treatment. IBE Paper No. P12. Proceesings of Annual International Meeting of The Institute of Biological Engineering. Fayetteville, AR. 9 pp.
  • Ozer, N. P. and A. Demirci. 2004. Inactivation of Escherichia coli O157:H7 and Listeria monocytogenes inoculated on raw salmon by pulsed-UV treatment. IBE Paper No. P6. Proceesings of Annual International Meeting of The Institute of Biological Engineering. Fayetteville, AR. 8 pp.
  • Ozer, N. P. and A. Demirci. 2004. Electrolyzed oxidizing water treatment for decontamination of raw salmon inoculated with Escherichia coli O157:H7 and Listeria monocytogenes. IBE Paper No. P5. Proceesings of Annual International Meeting of The Institute of Biological Engineering. Fayetteville, AR. 12 pp.
  • Bialka, K. L., A. Demirci, Knabel, S. J., Patterson, P. H., and Puri, V. M. 2004. Efficacy of electrolyzed oxidizing water for microbial safety and quality of eggs. IBE Paper No. P4. Proceesings of Annual International Meeting of The Institute of Biological Engineering. Fayetteville, AR. 13 pp.
  • Demirci, A. 2004. Electrolyzed oxidizing water for plant sanitation and other applications. Proceedings of North Atlantic Poultry Health & Management Conference, Grantville, PA. 4 pp.
  • Demirci, A. 2004. Novel approaches to se control on eggs: Electrolyzed oxidizing water. Proceedings of North Atlantic Poultry Health & Management Conference, Grantville, PA. 3 pp.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2004. Effect of packaging materials on inactivation of pathogenic microorganisms on meat during irradiation. Evans Family Lecture for Graduate Research. Penn State University, University Park, PA. (The paper won outstanding paper award in Agricultural Science division)
  • Ozer, N. P. and A. Demirci. 2004. Decontamination of salmon fillets by using some novel processing technologies. ASAE Paper No. NABEC 04-0058. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Liu, S., V. M. Puri, and A. Demirci. 2004. Fate of Listeria innocua during ripening of Camembert cheese. ASAE Paper No. NABEC 04-0024. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Cekmecelioglu, D., A. Demirci, R. E. Graves, and N. H. Davitt. 2004. Optimization of windrow food waste composting to inactivate pathogenic microorganisms. ASAE Paper No. NABEC 04-0054. American Society of Agricultural Engineers. St. Joseph, MI. 18 pp.
  • Pongtharangkul, T. and A. Demirci. 2004. Enhanced nisin production using biofilm reactor. ASAE Paper No. NABEC 04-0062. American Society of Agricultural Engineers. St. Joseph, MI. 16 pp.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Pulsed UV-light inactivation of Staphylococcus aureus in milk. ASAE Paper No. NABEC 04-0008. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Bialka, K. L., A. Demirci, S. J. Knabel, P. H. Patterson, and V. M. Puri. 2004. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs. ASAE Paper No. NABEC 04-048. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Ozer, N. P. and A. Demirci. 2004. Efficacy of pulsed-UV light treatment inactivating Escherichia coli O157:H7 and Listeria monocytogenes on raw salmon. ASAE Paper No. 046020. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Ozer, N. P. and A. Demirci. 2004. Use of electrolyzed oxidizing water to inactivate Escherichia coli O157:H7 and Listeria monocytogenes Scott A on raw salmon. ASAE Paper No. 046021. American Society of Agricultural Engineers. St. Joseph, MI. 8 pp.
  • Bialka, K. L., A. Demirci, S. J. Knabel, P. H. Patterson, and V. M. Puri. 2004. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs during in-vitro and pilot scale egg washing. ASAE Paper No. 046054. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Cekmecelioglu, D., A. Demirci, R. E. Graves, and N. H. Davitt. 2004. Optimization of food-waste windrow composting to inactivate pathogenic microorganisms. ASAE Paper No. 047002. American Society of Agricultural Engineers. St. Joseph, MI. 18 pp.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Milk pasteurization by pulsed UV-light treatment. ASAE Paper No. 046048. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Liu, S., V. M. Puri, and A. Demirci. 2004. Survival and growth of Listeria monocytogenes during manufacture and ripening of camembert cheese. ASAE Paper No. 046050. American Society of Agricultural Engineers. St. Joseph, MI. 16 pp.
  • Liu, S., V. M. Puri, and A. Demirci. 2004. Comparison and evaluation of listeria innocua as a suitable indicator for replacing Listeria monocytogenes during ripening of camembert cheese. ASAE Paper No. 046025. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Bialka, K.L. and A. Demirci. 2005. Utilization of ozone for decontamination of small fruits. ASAE Paper No. NABEC 05-019. American Society of Agricultural Engineers. St. Joseph, MI. 9 pp.
  • Todd Miserendino and Ali Demirci. 2005. Nisin production by immobilized cell fermentation. ASAE Paper No. NABEC 05-P003. American Society of Agricultural Engineers. St. Joseph, MI. 6 pp.
  • Pongtharangkul T. and A. Demirci. 2005. Comparison of repeated batch and fed-batch fermentation for nisin production in biofilm reactors with various pH control profiles. ASAE Paper No. NABEC 05-020. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp. (Paper won first place)
  • Cekmecelioglu, D., P. H. Heinemann, A. Demirci, and R. E. Graves. 2005. Modeling of Compost Temperature and Inactivation of Salmonella and E. coli O157:H7 during Windrow Food Waste Composting. ASAE Paper No. 05-7007. American Society of Agricultural Engineers. St. Joseph, MI. 16 pp.
  • Pongtharangkul T. and A. Demirci. 2005. Optimization of medium and pH control profile in biofilm fermentation for nisin production. ASAE Paper No. 05-7035. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2005. Staphylococcus aureus inactivation using pulsed UV-light for continuous milk treatment. ASAE Paper No. 05-6151. American Society of Agricultural Engineers. St. Joseph, MI. 11 pp.
  • Bialka, K.L. and A. Demirci. 2005. Utilization of ozone for the decontamination of small fruits. ASAE Paper No. 05-6147. American Society of Agricultural Engineers. St. Joseph, MI. 8 pp.
  • Demirci, A. and K. Krishnamurthy. 2005. Disinfection of water by flow_through Pulsed-ultraviolet light sterilization system. Ultrapure Water Conference. Portland, OR, 12 pp.
  • Demirci, A. 2005. Pulsed UV light as an merging food processing technology. COST Action 924 Working Group Meeting for The Use of UV as a Postharvest Treatment: Status and Prospects, Antalya, Turkey. 8 pp.
  • Pongtharangkul T. and A. Demirci. 2006. Recovery of nisin during fermentation in biofilm reactor. ASABE Paper No. 06-7102. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Bialka, K.L. and A. Demirci. 2006. The use of aqueous ozone for the decontamination of small fruits. ASABE Paper No. 06-6021. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Miserendino, T.J. and A. Demirci. 2006. Nisin production by immobilized cell culture during batch and fed-batch fermentations with various ph profiles. ASABE Paper No. 06-7101. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Bialka, K.L. and A. Demirci. 2006. Decontamination of small fruits by using pulsed UV-light processing. ASABE Paper No. NABEC 06-013. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Pongtharangkul T. and A. Demirci. 2006. Recovery of nisin during fermentation in biofilm reactor. ASABE Paper No. NABEC 06-P020. American Society of Agricultural Engineers. St. Joseph, MI. 9 pp.
  • Krishnamurthy, K., A. Demirci, S. J. Jun, and J. Irudayaraj. 2006. Staphylococcus aureus inactivation using pulsed UV-light for continuous milk treatment. ASABE Paper No. NABEC 06-P019. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Bialka, K.L. A. Demirci, P. Walker, and V. M Puri. 2007. Pulsed UV-light penetration characterization and the inactivation of Escherichia coli K12 in model systems. ASABE Paper No. 76025. 21 pp.
  • Bialka, K.L. and A. Demirci. 2007. Pulsed Ultraviolet-Light Decontamination of Small Fruits. ASABE Paper No. 076107. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Pongtharangkul T., A. Demirci, and V. M. Puri. 2007. Modeling of Nisin Production by Lactococcus lactis. 2007 ASABE Paper No. 077042. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Krishnamurthy, K, J. C. Tewari, J. M. Irudayaraj, and A. Demirci. 2007. Investigation of Staphylococcus aureus Inactivation by Pulsed UV-light and Infrared Heating Using Micro-spectrometry and Transmission Electron Microscopy. ASABE Paper No. 076027. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Krishnamurthy, K, S. J. Jun, J. M. Irudayaraj, and A. Demirci. 2007. Infrared heat treatment for inactivation of Staphylococcus aureus. ASABE Paper No. 076119. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Huang, E. L. and A. Demirci. 2007. Optimization of recombinant human lysozyme using Kluyveromyces lactis K7. ASABE Paper No. 077033. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Keklik, N. M. and A. Demirci. 2007. Pulsed UV-light technology for the decontamination of food surfaces. ASABE Paper No. NABEC 07-036. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Bialka, K.L., A. Demirci, P. Walker, and V. M Puri. 2007. Penetration characterization of pulsed UV-light. ASABE Paper No. NABEC 07-P001. American Society of Agricultural Engineers. St. Joseph, MI. 21 pp.
  • Huang, E. L. and A. Demirci. 2007. Optimization of recombinant human lysozyme production by Kluyveromyces lactis K7. ASABE Paper No. NABEC 07-P002. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Keklik, N.M., A. Demirci, and V.M. Puri. 2008. Decontamination of unpackaged and vacuum-packaged boneless chicken breast with pulsed UV-light. ASABE Paper No. 083564. American Society of Agricultural Engineers. St. Joseph, MI. 15 pp.
  • Mishra, N., V.M. Puri, and A. Demirci. 2008. Combined effect of high pressure and temperature on inactivation and injury of Listeria monocytogenes in UHT whole milk. ASABE Paper No. 083743. American Society of Agricultural Engineers. St. Joseph, MI. 11 pp.
  • Bialka, K.L. and A. Demirci. 2008. Decontamination of blueberries using gaseous ozone, aqueous ozone, and pulsed UV-light. ASABE Paper No. 084551. American Society of Agricultural Engineers. St. Joseph, MI. 16 pp.
  • Keklik, N.M., A. Demirci, and V.M. Puri. 2008. Decontamination of boneless chicken breast with pulsed UV-light. ASABE Paper No. NABEC 08-008. American Society of Agricultural Engineers. St. Joseph, MI. 20 pp. (Paper won fist place)
  • Turhan, I, A. Demirci, and M. Karhan. 2008. Ethanol production from carob extract by Saccharomyces cerevisiae. ASABE Paper No. NABEC 08-009. American Society of Agricultural Engineers. St. Joseph, MI. 17 pp.
  • Bialka, K.L. and A. Demirci. 2008. Decontamination of Escherichia coli O157:H7 and Salmonella Enterica on blueberries using ozone and pulsed UV-light. ASABE Paper No. NABEC 08-015. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2008. Enhanced production of microbial cellulose. ASABE Paper No. NABEC 08-056. American Society of Agricultural Engineers. St. Joseph, MI. 12 pp.
  • Cheng, K-C, J., A. Demirci, and M. Catchmark. 2009. Effect of temperature, carbon source, yeast extract, and pH on pullulan production by Aureobasidium pullulans. ASABE Paper No. 096033. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Cheng, K-C, J. M. Catchmark, and A. Demirci. 2009. Enhanced production of bacterial cellulose under agitated condition and its material property analysis. ASABE Paper No. 095976. American Society of Agricultural Engineers. St. Joseph, MI. 11 pp.
  • Cheng, K-C, J. M. Catchmark, and A. Demirci. 2009. Enhanced production of bacterial cellulose production by using biofilm reactor and its material property analysis. ASABE Paper No. 095975. American Society of Agricultural Engineers. St. Joseph, MI. 18 pp.
  • Keklik, N.M., A. Demirci, V.M. Puri. 2009. Decontamination of shell-eggs with pulsed UV-light. ASABE Paper No. 095974. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Keklik, N.M., A. Demirci, and V.M. Puri. 2009. Decontamination of chicken frankfurters with pulsed UV-light. ASABE Paper No. 095973. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Turhan, I, K.L. Bialka, A. Demirci, and M. Karhan. 2009. Enhanced lactic acid production from carob extract by Lactobacillus casei. ASABE Paper No. 095980. American Society of Agricultural Engineers. St. Joseph, MI. 10 pp.
  • Turhan, I, K.L. Bialka, A. Demirci, and M. Karhan. 2009. Enhanced ethanol production from carob extract by Saccharomyces cerevisiae. ASABE Paper No. 095979. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2009. Enhanced pullulan production in the batch fermentation by Aureobasidium pullulans. ASABE Paper No. NABEC 08-056. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Cheng, K.C., J. Catchmark, and A. Demirci. 2009. Enhanced production of bacterial cellulose by using biofilm reactor and its material property analysis. ASABE Paper No. 095976. American Society of Agricultural Engineers. St. Joseph, MI. 18 pp.
  • Keklik, N.M., A. Demirci, and V.M. Puri. 2009. Decontamination of chicken frankfurters with pulsed UV-light. ASABE Paper No. NABEC 09-048. American Society of Agricultural Engineers. St. Joseph, MI. 15 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2009. Enhanced pullulan production in the batch fermentation by Aureobasidium pullulans. ASABE Paper No. NABEC 09-037. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Cheng, K.C., J. Catchmark, and A. Demirci. 2009. Enhanced production of bacterial cellulose by using biofilm reactor and its material property analysis. ASABE Paper No. NABEC 09-038. American Society of Agricultural Engineers. St. Joseph, MI. 18 pp.
  • Izmirlioglu, G. and A. Demirci. 2010. Ethanol production from waste potato mash by using Saccharomyces cerevisiae. ASABE Paper No. 1008673. American Society of Agricultural Engineers. St. Joseph, MI. 11 pp.
  • Izmirlioglu, G. and A. Demirci. 2010. Enzyme hydrolysis of waste potato mash. ASABE Paper No. 1008672. American Society of Agricultural Engineers. St. Joseph, MI. 9 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2010. Modeling of pullulan fermentation by using a color variant strain of Aureobasidium pullulans. ASABE Paper No. 1008676. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Keklik, N.M., A. Demirci, and R.G. Bock. 2010. Decontamination of whole chicken carcasses by using a pilot-scale pulsed UV-light System. ASABE Paper No. 1008677. American Society of Agricultural Engineers. St. Joseph, MI. 17 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2010. Effects of plastic composite support and pH profiles on pullulan production in a biofilm reactor. ASABE Paper No. 1008674. American Society of Agricultural Engineers. St. Joseph, MI. 15 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2010. Enhanced pullulan production in a biofilm reactor by using response surface methodology. ASABE Paper No. 1008675. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Cheng, K.C., J. Catchmark, and A. Demirci. 2011. Effects of CMC addition on bacterial cellulose production in a biofilm reactor and its paper sheets analysis. ASABE Paper No. NABEC 11-008. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2011. Continuous pullulan fermentation in a PCS biofilm reactor. ASABE Paper No. NABEC 11-009. American Society of Agricultural Engineers. St. Joseph, MI. 11 pp.
  • Keklik, N.M., A. Demirci, and V.M. Puri, and P.H. Heinemann. 2011. Modeling the inactivation of Salmonella Typhimurium, Listeria monocytogenes, and Salmonella Enteritidis on poultry products exposed to pulsed UV-light. ASABE Paper No. NABEC 11-010. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Dev. S.R.S., A. Demirci, and R. Graves. 2011. Mathematical modeling of CIP of milking systems using electrolyzed oxidizing water. ASABE Paper No. NABEC 11-016. American Society of Agricultural Engineers. St. Joseph, MI. 16 pp.
  • Izmirlioglu, G. and A. Demirci. 2011. Utilization of waste potato mash for ethanol production. ASABE Paper No. NABEC 11-050. American Society of Agricultural Engineers. St. Joseph, MI. 14 pp.
  • Izmirlioglu, G. and A. Demirci. 2011. Enzymatic hydrolysis of waste potato mash for ethanol fermentation. ASABE Paper No. NABEC 11-051. American Society of Agricultural Engineers. St. Joseph, MI. 15 pp.
  • Cheng, K.C., J. Catchmark, and A. Demirci. 2011. Effects of CMC addition on bacterial cellulose production in a biofilm reactor and its paper sheets analysis. ASABE Paper No. 1110436. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Cheng, K.C., A. Demirci, and J. Catchmark. 2011. Continuous pullulan fermentation in a PCS biofilm reactor. ASABE Paper No. 1110434. American Society of Agricultural Engineers. St. Joseph, MI. 13 pp.
  • Keklik, N.M., A. Demirci, and V.M. Puri, and P.H. Heinemann. 2011. Modeling the inactivation of Salmonella Typhimurium, Listeria monocytogenes, and Salmonella Enteritidis on poultry products exposed to pulsed UV-light. ASABE Paper No. 1110433. American Society of Agricultural Engineers. St. Joseph, MI. 16 pp.
  • Keklik, N.M., A. Demirci, and R.G. Bock. 2011. Decontamination of whole chicken carcasses by using a pilot-scale pulsed UV-light System. International Food Congress-Novel Approaches in Food Industry. Izmir, Turkey. 6 pp.

Published Abstracts and other presentations

  • Demirci, A., and A. L. Pometto III 1990. Enhanced lactic acid production by chemical mutagenesis of L. delbrueckii ATCC #9649. Proceedings of 4th Annual Life Science Symposium, Iowa State University, Ames, IA.
  • Demirci, A., and A.L. Pometto III. 1990. Enhanced lactic acid production by chemical mutagenesis of L. delbrueckii ATCC #9649. Abstracts of 90th Annual Meeting of American Society for Microbiology. Anaheim, CA.
  • Demirci, A., A. L. Pometto III, and K. E. Johnson. 1992. Lactic acid production by L. casei and S. viridosporus T7A mixed culture biofilm reactor. Corn Utilization Conference IV. St. Louis, MO.
  • Demirci, A., A. L. Pometto III, and K. E. Johnson. 1992. Development of a mixed culture biofilm reactor for lactic acid production at 25, 37, and 45 oC. Corn Utilization Conference IV. St. Louis, MO.
  • Demirci, A., and A. L. Pometto III. 1992. Protocol for enhanced lactic acid production in lactic acid bacteria. Corn Utilization Conference IV. St. Louis, MO.
  • Demirci, A. A. L. Pometto III, and K. E. Johnson. 1992. Lactic acid production in mixed culture biofilm reactor. Abstracts of IFT Annual Meeting, New Orleans, LA.
  • Arslan, I.Y., and A. Demirci. 1994. Formulation and Processing of Diet Cube Sugar. Food Engineering Conference II, Gaziantep, Turkey.
  • Pometto III, A. L., S. Moizuddin, and A. Demirci. 1995. Evaluation of American Protein Corporations bio-pharmaceutical products as nutrient replacers in microbial fermentations media. Abstracts of Recent Advances in Fermentation Technology. San Diego, CA.
  • Ho, K. L. G., A. L. Pometto III, P. N. Hinz, and A. Demirci. 1996. Micronutrients leaching and end product accumulation in plastic composite-supports (PCS) discs for L(+)-lactic acid (LA) biofilm fermentation. American Society for Microbiology, 95th General Meeting, New Orleans, LA.
  • Ho, K. L. G., A. L. Pometto III, P. N. Hinz, A. Demirci, and J. S. Dickson. 1996. Ingredients selection for plastic composite-supports (PCS) discs for L(+)-lactic acid biofilm fermentations. American Society for Microbiology, 95th General Meeting, New Orleans, LA.
  • Ho, K.L.G., A. L. Pometto III, P.N. Hinz, and A. Demirci. 1996. Complex nutrients leaching and lactic acid accumulation in plastic composite-supports for L(+)-lactic acid biofilm fermentation. Corn Utilization Conference VI, St. Louis, MO.
  • Ho, K.L.G., A. L. Pometto III, P.N. Hinz, A. Demirci, and J. S. Dickson. 1996. Selection of agricultural materials for plastic composite-supports used in L(+)-lactic acid biofilm fermentations. Corn Utilization Conference VI, St. Louis, MO.
  • Demirci, A., A. L. Pometto III, and K.L.G. Ho. 1996. Plastic composite supports for enhanced ethanol production in biofilm reactors. Corn Utilization Conference VI. St. Louis, MO.
  • Velazquez, C., A. L. Pometto IIII, K. L.G. Ho, and A. Demirci. 1998. Performance of plastic composite supports (PCS) in repeated fed batch biofilm lactic acid fermentation by Lactobacillus casei with and without nystatin antibiotic addition. Corn Utilization and Technology Conference VII. St. Louis, MO.
  • Lee, B., and A. L. Pometto III, Demirci, A., and P. N. Hinz. 1998. Evaluation agricultural by-products for enhanced enzyme production important to the corn industry. Corn Utilization and Technology Conference VII. St. Louis, MO.
  • Demirci, A., and A. L. Pometto III, B. Lee, and P. N. Hinz. 1998. Development of a novel bioreactor for long-term uninterrupted repeated-batch lactic acid fermentation to rapidly evaluate different fermentation medium. Corn Utilization and Technology Conference VII. St. Louis, MO.
  • Demirci, A., and A. L. Pometto III. 1998. Rapid screening of solvents and carrier compounds for lactic acid recovery by emulsion liquid extraction and cell toxicity. Corn Utilization and Technology Conference VII. St. Louis, MO.
  • Demirci, A., A. L. Pometto III, B. Lee, and P. Hinz. 1999. Development of a novel bioreactor for long-term uninterrupted repeated-batch lactic acid fermentation to rapidly evaluate different fermentation medium. Iowa Biotechnology Byproducts Consortium Symposium for Getting Value from Ag Biotechnology. Des Moines, IA.
  • Lee, B. A. L. Pometto III, A. Demirci, and P. N. Hinz. 1999. Evaluation of agricultural byproducts for enhanced enzyme production important to the corn industry. Iowa Biotechnology Byproducts Consortium Symposium for Getting Value from Ag Biotechnology. Des Moines, IA.
  • Demirci, A., A. L. Pometto III, and D. J. Cox. 1999. Enhanced organically bound selenium yeast production. Iowa Biotechnology Byproducts Consortium Symposium for Getting Value from Ag Biotechnology. Des Moines, IA.
  • Demirci, A., and A. L. Pometto III, K. R. Harkins, and P. N. Hinz. 2000. Resistance of Lactobacillus casei in PCS biofilm reactors to extractive solvent and carrier compound toxic effect. Corn Utilization and Technology Conference VIII. St. Paul, MN.
  • Cotton, J., A. L. Pometto III, and A. Demirci. 2000. Lactic acid extraction with an emulsion liquid membrane in a hollow fiber contactor. Corn Utilization and Technology Conference VIII. St. Paul, MN.
  • Urbance, S. E., A. L. Pometto III, A. Demirci, DiSpirito, A. 2000. Plastic composite support ingredient selection for biofilm formation and succinic acid production. Corn Utilization and Technology Conference VIII. St. Paul, MN.
  • Demirci, A., L.R. Buechat, K.M. McWatters, and W.F. Fett. 2000. Decontamination of alfalfa seeds and sprouts by ozone. National Alliance for Food Safety Annual Meeting. November 28. Texas A&M University, College Station, Texas.
  • Demirci, A. 2001. Microbiological engineering and food safety. The Third Annual Pennsylvania Food Industry Conference. Lancaster, PA.
  • Demirci, A. 2000. Microbiological engineering and food safety. The Life Sciences Consortium’s Dinner ‘n’ Data. Penn State University, Hershey, PA.
  • Demirci, A. Microbiological engineering and food safety. 2001. The Penn State Center for Food Manufacturing Spring Meeting. Penn State University, University Park, PA.
  • Sharma, R.R. And A. Demirci. 2001. Decontamination of alfalfa seeds by novel methods. The 17th Annual College of Agricultural Sciences-Gamma Sigma Delta undergraduate and graduate research exhibition. Penn State University, University Park, PA.
  • Sharma, R.R. And A. Demirci. 2001. Decontamination of alfalfa seeds by novel methods. The Sixteen Annual Graduate Exhibition. Penn State University, University Park, PA. (The paper won first place in the Engineering Category)
  • Mazzoni, A.M. and A. Demirci. 2001. Reduction of Escherichia coli K12 on alfalfa seeds by supercritical carbon dioxide treatment. The Tenth Annual Schreyer Honors College Undergraduate Exhibition. Penn State University, University Park, PA. (The paper won second place in the Engineering Category)
  • Davis, G., and A. Demirci. 2001. Medium evaluation for maximum nisin production by Lactococcus lactis subsp. lactis with or without pH control. Life Sciences Consortium Undergraduate Summer Research Exhibition. Penn State University, University Park, PA.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2001. The performance and FT-Raman spectroscopic techniques in simutanous monitoring of multiple components in a Lactobacillus casei production process. Abstracts of IFT Annual Meeting, New Orleans, LA.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2001. Monitoring a bioprocess for ethanol production using FT-MIR and FT-Raman spectroscopy. Abstracts of IFT Annual Meeting, New Orleans, LA.
  • Demirci, A. 2001. Microbiological Engineering at Penn State University. Northeast Agricultural and Biological Engineering Conference. Guelph, Ontario, Canada.
  • Sharma, R.R., and A. Demirci. 2001. Inactivation of pathogenic organisms on sprouting seeds by emerging technologies. Northeast Agricultural and Biological Engineering Conference. Guelph, Ontario, Canada.
  • Bober, J., and A. Demirci. 2001. Production of nisin by using biofilm reactors. Northeast Agricultural and Biological Engineering Conference. Guelph, Ontario, Canada.
  • Demirci, A. 2001. Emerging technologies for fruit and vegetable postharvest operations. ASAE 94th Annual International Meeting. Sacramento, CA.
  • Sharma, R.R., and A. Demirci. 2001. Treatment of E. coli O157:H7 contaminated alfalfa seeds with electrolyzed oxidizing water. ASAE 94th Annual International Meeting. Sacramento, CA.
  • Sharma, R.R and A. Demirci. 2001. Inactivation of pathogenic organisms on sprouting seeds by emerging technologies. The Institute of Biological Engineering Annual International Meeting. Sacramento, CA.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2001. Simultaneous measurement of multiple components in a S. cerevisiae process using FTIR and FT-Raman Spectroscopy. ASAE 94th Annual International Meeting. Sacramento, CA.
  • Sivakesava, S., J. Irudayaraj, and A. Demirci. 2001. Analysis of Glucose, Lactic Acid, and Cell Density by FTIR, NIR and FT-Raman Spectroscopic Techniques. ASAE 94th Annual International Meeting. Sacramento, CA.
  • Barstad, K. A., R. R. Sharma, A. Demirci, and C. N. Cutter. 2001. Comparison of electrolyzed oxidizing water with various antimicrobial interventions to reduce Salmonella spp. on poultry. International Animal Agriculture and Food Science Conference. Indianapolis, IN.
  • Mazzoni, A.M., A. Demirci, G.R. Ziegler, and R.R. Sharma. 2001. Reduction of Escherichia coli K12 on alfalfa seeds by supercritical carbon dioxide treatment. Allegheny Branch American Society of Microbiology Meeting. Indiana, PA.
  • Sharma, R.R., and A. Demirci. 2001. Inactivation of pathogenic organisms on sprouting seeds by emerging technologies. Allegheny Branch American Society of Microbiology Meeting. Indiana, PA.
  • Bober, J.A., and A. Demirci. 2001. Implementation of biofilm reactor for nisin production using reduced nitrogen media with or without pH control. Allegheny Branch American Society of Microbiology Meeting. Indiana, PA.
  • Wade, W. N., A. J. Scouten, K. M. McWatters, A. Demirci, W. F. Fett, and L. R. Beuchat. 2002. Minimal effectiveness of ozone in killing Listeria monocytogenes on alfalfa seeds and sprouts, and effects on sensory quality of sprouts. The International Fresh-cut Produce Association 15th Annual Conference and Exhibition. Los Angeles, CA.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2002. Effect of Packaging Materials on Inactivation of Pathogenic Microorganisms on Meat during Irradiation. International Association of Food Protection 89th Annual Meeting. San Diego, CA.
  • Sharma, R. R., A. Demirci, L. R. Beuchat, and W. F. Fett. 2002. Inactivation of E. coli O157:H7 on Alfalfa Seeds and Sprouts by Ozonation. International Association for Food Protection 89th Annual Meeting. San Diego, CA.
  • Mazzoni, A. M., A. Demirci, G. R. Ziegler, and R. R. Sharma. 2002. Reduction of Escherichia coli K12 on alfalfa seeds by supercritical carbon dioxide treatment. San Diego, CA.
  • Demirci, A. 2002. Engineering Elements of Biochemistry and Microbiology. ASAE 95th Annual International Meeting. Chicago, IL.
  • Demirci, A. 2002. Microbiological Engineering. ASAE Student Branch Meeting. Penn State University, University Park, PA.
  • Demirci, A. 2002. Implementation of biofilm reactor for nisin production using reduced nitrogen media with or without pH control. LSC Dinner and Data. Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2002. Effect of Packaging Materials on Pathogen Inactivation During Meat Irradiation. The Eighth Annual College of Agricultural Sciences-Gamma Sigma Delta Undergraduate and Graduate Research Exhibition. Penn State University, University Park, PA. (The paper won first place in the Engineering Category)
  • Hillegas, S., and A. Demirci. 2002. Inactivation of Clostridium sporogenes in clover honey by pulsed UV-light treatment. The Eighth Annual College of Agricultural Sciences-Gamma Sigma Delta Undergraduate and Graduate Research Exhibition. Penn State University, University Park, PA.
  • Hillegas, S., and A. Demirci. 2002. Inactivation of Clostridium sporogenes in clover honey by pulsed UV-light treatment. The 11th Annual Schreyer Honors College Undergraduate Exhibition. Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2002. Effect of Packaging Materials on Pathogen Inactivation During Meat Irradiation. The 17th Annual Graduate Exhibition. Penn State University, University Park, PA.
  • Sharma, R. R., and A. Demirci. 2002.Inactivation of E. coli O157:H7 Inoculated Alfalfa Seeds with Ozone under Low Hydrostatic Pressure. The 17th Annual Graduate Exhibition. Penn State University, University Park, PA. (The paper won third place in the Engineering Category)
  • Demirci, A. 2002. New technologies for produce sanitation. Susquehanna Conference of the Central Atlantic States Association of Food and Drug Officials (CASA) Quarterly Meeting. State College, PA.
  • Mazzoni, A. M., A. Demirci, G. R. Ziegler, and R. R. Sharma. 2002. Reduction of Escherichia coli K12 on Alfalfa Seeds by Supercritical Carbon Dioxide Treatment. Northeast Agricultural and Biological Engineering Conference. Quebec City, Quebec, Canada.
  • Edmonds, A., A. Demirci, Cekmecelioglu, D., and R. E. Graves. 2002. Fate of pathogenic microorganisms during windrow composting. Pennsylvania Governor’s School for the Agricultural Sciences Independent Research Symposium. Penn State University, University Park, PA.
  • Moyer, T., A. Demirci, Cekmecelioglu, D., and R. E. Graves. 2002. Fate of pathogenic Microorganisms during composting. Pennsylvania Governor’s School for the Agricultural Sciences Independent Research Symposium. Penn State University, University Park, PA.
  • Walker, S. P., A. Demirci, R. E. Graves, and S. B. Spencer,. 2002. Response Surface Modeling for Cleaning and Disinfecting Materials Used in Milking Systems. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2002. Inactivation of Staphylococcus aureus by pulsed UV-light sterilization. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA.
  • Hillegas, S. L., and A. Demirci. 2002. Inactivation of Clostridium sporogenes in clover honey using pulsed-UV treatment. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA.
  • Pongtharangkul, T., and A. Demirci. 2002. Evaluation of agar well diffusion assay for nisin quantification. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA.
  • Veale, E. L.,J. Irudayaraj, and A. Demirci. 2002. A process control approach to optimize ethanol fermentation using FTIR spectroscopy. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA.
  • Waswa, J. W., C. Debroy, J. Irudayaraj, A. Demirci. 2002. Surface plasmon resonance based biosensor assays for detection of Escherichia coli O157:H7 in food samples. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA. (The paper won first place)
  • Cekmecelioglu, D., A. Demirci, R. E. Graves. 2002. Optimization of feedstock requirement for in-vessel food waste composting systems. Allegheny Branch American Society of Microbiology Meeting. Clarion, PA.
  • Veale, E. L., J. Irudayaraj, and A. Demirci. 2003. A process control approach to optimize ethanol fermentation using FTIR spectroscopy. The Institute of Biological Engineering Annual International Meeting. Athens, GA. (The paper won third place)
  • Cekmecelioglu, D., A. Demirci, R. E. Graves. 2003. Optimization of in-vessel food waste composting by using response surface method. The Institute of Biological Engineering Annual International Meeting. Athens, GA.
  • Walker, S. P., R. E. Graves, S. Spencer, A. Demirci. 2003. Response surface modeling for cleaning and disinfecting materials used in milking systems with electrolyzed oxidizing water. The Institute of Biological Engineering Annual International Meeting. Athens, GA. (The paper won first place)
  • Demirci, A. 2003. Teaching biology with applications to biological engineering students. The Institute of Biological Engineering Annual International Meeting. Athens, GA.
  • Demirci, A. 2003. Emerging non-thermal sanitation and sterilization technologies for biological engineering applications. The Institute of Biological Engineering Annual International Meeting. Athens, GA.
  • Pongtharankul, T. and Demirci, A. 2003. Evaluation of agar diffusion bioassay for nisin quantification during fermentation. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo., Penn State University, University Park, PA.
  • Deniz Cekmecelioglu, A. Demirci, and R. E. Graves. 2003. Optimization of in-vessel food waste composting by using response surface method. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo., Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2003. Pulsed UV-Light Sterilization for inactivation of Staphylococcus aureus. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo., Penn State University, University Park, PA.
  • Walker, S. P., A. Demirci, R. E. Graves, and S. B. Spencer. 2003. Cleaning milking systems with electrolyzed oxidizing water. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo., Penn State University, University Park, PA. (The paper won first place in Physical and Engineering Sciences)
  • Veale, E. L., J. Irudayaraj, and A. Demirci. 2003. A process control approach to optimize ethanol fermentation using FTIR spectroscopy. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo., Penn State University, University Park, PA. (The paper won second place in Physical and Engineering Sciences)
  • Pongtharankul, T. and Demirci, A. 2003. Evaluation of agar diffusion bioassay for nisin quantification during fermentation. 18th Annual Graduate Exhibition Poster and Visual Arts Options, Penn State University, University Park, PA.
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2003. Optimization of in-vessel food waste composting by using response surface method. 18th Annual Graduate Exhibition Poster and Visual Arts Options., Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2003. Pulsed UV-light sterilization for inactivation of Staphylococcus aureus. 18th Annual Graduate Exhibition Poster and Visual Arts Options, Penn State University, University Park, PA. (The paper won first place in Engineering)
  • Walker, S. P., A. Demirci, R. E. Graves, and S. B. Spencer. 2003. Cleaning milking systems with electrolyzed oxidizing water. 18th Annual Graduate Exhibition Poster and Visual Arts Options., Penn State University, University Park, PA.
  • Veale, E. L., J. Irudayaraj, and A. Demirci. 2003. A process control approach to optimize ethanol fermentation using FTIR spectroscopy. 18th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Demirci, A. 2003. Novel non-thermal processes for decontaminations of food and biological products. Departmental Seminar at the Department of Food Engineering, University of Gaziantep, Turkey.
  • Chikthimmah, N., J. McMillen, A. Demirci, L. F. LaBorde, and R. B. Beelman. 2003. Electrolyzed oxidized water irrigation to reduce bacterial populations on fresh mushrooms. Annual IFT Meeting. Chicago, IL.
  • Okull, D. O., L. F. LaBorde, and A. Demirci. 2003. Studies on the activity of electrolized oxidizing water on conidia of Penicillium expansum. Annual IFT Meeting. Chicago, IL.
  • Demirci, A. 2003. Microbiological bioprocessing engineering. ASAE 96th Annual International Meeting. Las Vegas, NV.
  • Demirci, A. 2004. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs. The Penn State Center for Food Manufacturing Fall Meeting. Penn State University, University Park, PA.
  • Morawicki, R. O., R. B. Beelman, D. Peterson, and A. Demirci. 2004. Biosynthesis of 1-octen-3-ol and 10-oxo-trans-8-decenoic acid using a crude homogenate of Agaricus bisporus: Reaction scale up. Abstracts of IFT Annual Meeting, Las Vegas, NV.
  • Demirci, A. and J. Irudayaraj. 2004. Decontamination of raw or minimally processed foods by pulsed light sterilization system for ISS and planetary outpost. NASA Food Technology Commercial Space Center Symposium Iowa State University, Ames, Iowa.
  • Thunyarat Pongtharangkul and A. Demirci. 2004. Enhanced Nisin Production. Using plastic-composite support biofilm reactor. The Huck Institutes of Life Sciences’ CrossOver. Pennsylvania State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Continuous milk treatment by using pulsed uv-light for inactivation of Staphylococcus aureus. Allegheny Branch American Society of Microbiology Meeting. Huntingdon, PA.
  • Bialka, K.L. and Ali Demirci. 2004. The Efficacy of Ozone for the decontamination of E. coli O157:H7 on small fruits. Allegheny Branch American Society of Microbiology Meeting. Huntingdon, PA.
  • Pongtharangkul, T., and A. Demirci. 2004. Enhanced nisin production using plastic-composite support biofilm reactor. Allegheny Branch American Society of Microbiology Meeting. Huntingdon, PA. (The paper won first place in poster category)
  • Krishnamurthy, K., A. Demirci, V. M. Puri, and C. N. Cutter. 2004. Effect of packaging materials on inactivation of pathogenic microorganisms on meat during irradiation. Evans Family Lecture for Graduate Research. Penn State University, University Park, PA. (The paper won outstanding paper award in Agricultural Science division)
  • Bialka, K. L. and A. Demirci. 2004. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs. 19th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2004. Optimization of windrow food waste composting to inactivate pathogenic microorganisms. 19th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Milk pasteurization by pulsed UV-light treatment. 19th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Pongtharangkul, T. and A. Demirci. 2004. Enhanced nisin production using biofilm reactor. 19th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Bialka, K. L. and A. Demirci. 2004. Efficacy of electrolyzed oxidizing water for the microbial safety and quality of eggs. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won the second place in Physical and Engineering Sciences category)
  • Cekmecelioglu, D., A. Demirci, and R. E. Graves. 2004. Optimization of windrow food waste composting to inactivate pathogenic micrroganisms. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2004. Milk pasteurization by pulsed UV-light treatment. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won the first place in Physical and Engineering Sciences category)
  • Pongtharangkul, T. and A. Demirci. 2004. Enhanced nisin productiuon using biofilm reactor. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Bialka, K. L., and A. Demirci. 2005. The efficacy of gaseous ozone for the decontamination of strawberries. 20th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA. (The paper won third place in Engineering Sciences category)
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2005. Continuous Milk Treatment by Pulsed UV-light for inactivation of Staphylococcus aureus. 20th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA. (The paper won third place in Engineering Sciences category)
  • Pongtharangkul, T. and A. Demirci. 2005. Comparison of repeated batch and fed-batch fermentation for nisin production in biofilm reactors with various pH control profiles. 20th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Bialka, K. L., and A. Demirci. 2005. The efficacy of gaseous ozone for the decontamination of strawberries. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Krishnamurthy, K., A. Demirci, and J. Irudayaraj. 2005. Continuous Milk Treatment by Pulsed UV-light for inactivation of Staphylococcus aureus. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won third place in Physical and Engineering Sciences category)
  • Pongtharangkul, T. and A. Demirci. 2005. Comparison of repeated batch and fed-batch fermentation for nisin production in biofilm reactors with various pH control profiles. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Demirci, A. 2005. Pulsed ultraviolet light and electrolyzed oxidizing water. The USDA Workshop on Emerging Food Processing Technologies. Washington, DC.
  • Okull, D.O., A. Demirci, L.F. LaBorde. 2005. Susceptibility of Penicillium expansum spores to sodium hypochlorite, electrolyzed oxidizing water, and chlorine dioxide on wood and plastic surfaces in the presence of surfactants. International Association of Food Protection 92nd Annual Meeting, Baltimore, MD.
  • Demirci, A. 2005. Integrating capstone design across agricultural & biological engineering: Bioreactor design and downstream processing for production of value-added products. ASAE 98th Annual International Meeting. Tampa, FL.
  • Demirci, A. 2006. Emerging food processing technologies for food safety. Department of Engineering Mechanics and Science, Penn State University, University Park, PA.
  • Bialka, K. L., and A. Demirci. 2006. The Efficacy of Aqueous Ozone for the Decontamination of Red Raspberries. 21st Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA. (The paper won second place in Engineering Sciences category)
  • Pongtharangkul, T. and A. Demirci. 2006. Recovery of nisin produced in biofilm reactor. 21st Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Bialka, K. L., and A. Demirci. 2006. The Efficacy of Aqueous Ozone for the Decontamination of Red Raspberries. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won second place in Physical and Engineering Sciences category)
  • Pongtharangkul, T. and A. Demirci. 2006. Comparison of repeated batch and fed_batch fermentation for nisin production in biofilm reactors with various pH control profiles. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won first place in Physical and Engineering Sciences category)
  • Bialka, K. L., and A. Demirci. 2006. Decontamination of small fruits using aqueous ozone. The College of Engineering Research Symposium. Penn State University, University Park, PA. (The paper won second place in the Graduate Engineering Student Paper Competition)
  • Bialka, K. L., and A. Demirci. 2007. Pulsed ultra violet-light decontamination of small fruits. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won first place in Physical and Engineering Sciences category)
  • Huang., E. L. and A. Demirci. 2007. Optimization of recombinant human lysozyme production by Kluyveromyces lactis K7. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Bialka, K. L., and A. Demirci. 2007. Pulsed ultra violet-light decontamination of small fruits. 22nd Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA. (The paper won third place in Engineering Sciences category)
  • Huang., E. L. and A. Demirci. 2007. Optimization of recombinant human lysozyme production by Kluyveromyces lactis K7. 22nd Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Demirci, A. 2007. Emerging food processing technologies for food safety. NC 1023 Improvement of thermal and alternative processes for foods. Annual Meeting. University Park, PA.
  • Demirci, A. 2007. Comparison of Radial and Axial Flow Chromatography for MK 7305 Upstream Processing. Merck and Co. West Point, PA.
  • Demirci, A. 2007. Sabbatical Experience at Merck & Co; Comparison of Radial and Axial Flow Chromatography for MK 7305 Upstream Processing. Dept. Agricultural & Biological Engineering, Penn State University, University Park, PA.
  • Demirci, A. 2007. Biofilm bioreactors for biofuel productions. The Huck Institutes of Life Sciences’ Crossover Symposium on Bioenergy. Penn State University, University Park, PA.
  • Graf-Sirakaya1, B. and A. Demirci. 2007. Industrial grade media evaluation for ethanol fermentation with Saccharomyces cerevisiae. The Huck Institutes of Life Sciences’ Crossover Symposium on Bioenergy. Penn State University, University Park, PA.
  • Keklik, N.M., A. Demirci, V.M. Puri. 2008. Decontamination of boneless chicken breast with pulsed UV-light. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Keklik, N.M., A. Demirci, V.M. Puri. 2008. Decontamination of boneless chicken breast with pulsed UV-light. 23rd Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA. (The paper won third place in Engineering Sciences category)
  • Demirci, A., F. Leu, F.J. Bailey. 2008. Comparison of radial and axial flow chromatography for monoclonal antibody downstream processing. ASAE 101st Annual International Meeting. Providence, RI.
  • Demirci, A.. 2008. Sabbatical Experience at Merck. Northeast Agricultural and Biological Engineering Conference. Aberdeen, MD.
  • Mishra, N., V.M. Puri, and A. Demirci. 2008. Evaluation of inactivation and injury of Listeria monocytogenes under combined effect of high pressure and temperature in UHT whole milk. Northeast Agricultural and Biological Engineering Conference. Aberdeen, MD.
  • Turhan, I., K.L. Bialka, A. Demirci, and M. Karhan. 2009. Enhanced lactic acid production from carob extract by Lactobacillus casei. International Enzyme Engineering Symposium, Kusadasi, Turkey.
  • Turhan, I, K.L. Bialka, A. Demirci, and M. Karhan. 2009. Enhanced ethanol production from carob extract by Saccharomyces cerevisiae. International Enzyme Engineering Symposium, Kusadasi, Turkey.
  • Demirci. A. 2009. Research opportunities and graduate study in U.S. Akdeniz University, Turkey.
  • Demirci, A. 2009. Microbiological engineering. Dept. of Food Science and Human Nutrition. Iowa State University, Ames, IA.
  • Demirci, A. 2009. Pulsed ultraviolet light for decontamination of foods. Conference of Food Engineering. Columbus, OH.
  • Demirci, A. 2009. Biofilm bioreactors for biofuel productions. Conference of Food Engineering. Columbus, OH.
  • Keklik, N.M., A. Demirci, P.H. Patterson, and V.M. Puri. 2009. Decontamination of shell-eggs with pulsed UV-light. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Cheng, K.C., Catchmark, J. M., and A. Demirci. 2009. Decontamination of shell-eggs with pulsed UV-light. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Keklik, N.M., A. Demirci, P.H. Patterson, and V.M. Puri. 2009. Decontamination of shell-eggs with pulsed UV-light. 24th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Cheng, K.C., Catchmark, J. M., and A. Demirci. 2009. Decontamination of shell-eggs with pulsed UV-light. 24th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Catchmark, J. M., K.C. Cheng and A. Demirci. Enhanced production of microbial cellulose. 2009. Technical Association of the Pulp and Paper Industry International Conference on Nanotechnology for the Forest Products Industry. Edmonton, Canada.
  • Turhan, I, K.L. Bialka, A. Demirci, and M. Karhan. 2009. Enhanced ethanol production from carob extract by Saccharomyces cerevisiae. BioEnergy Bridge Kickoff Workshop. Pennsylvania State University, University Park, PA.
  • Demirci, A. 2009. Microbiological engineering. Dept. of Chemical Engineering. Pennsylvania State University, University Park, PA.
  • Demirci. A. 2009. Research opportunities and graduate study in U.S. Akdeniz University, Turkey.
  • Demirci, A. 2009. Microbiological engineering. Dept. of Food Science and Human Nutrition. Iowa State University, Ames, IA.
  • Demirci, A. 2009. Pulsed ultraviolet light for decontamination of foods. Conference of Food Engineering. Columbus, OH.
  • Demirci, A. 2009. Biofilm bioreactors for biofuel productions. Conference of Food Engineering. Columbus, OH.
  • Keklik, N.M., A. Demirci, P.H. Patterson, and V.M. Puri. 2009. Decontamination of shell-eggs with pulsed UV-light. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Cheng, K.C., Catchmark, J. M., and A. Demirci. 2009. Enhanced production of bacterial cellulose by using biofilm reactor and its material property analysis. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA. (The paper won second place in Physical and Engineering Sciences category)
  • Keklik, N.M., A. Demirci, P.H. Patterson, and V.M. Puri. 2009. Decontamination of shell-eggs with pulsed UV-light. 24th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Cheng, K.C., Catchmark, J. M., and A. Demirci. 2009. Enhanced production of bacterial cellulose by using biofilm reactor and its material property analysis. 24th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Catchmark, J.M., K.C. Cheng and A. Demirci. 2009. Enhanced production of microbial cellulose. Technical Association of the Pulp and Paper Industry International Conference on Nanotechnology for the Forest Products Industry. Edmonton, Canada.
  • Turhan I, K.L. Bialka, A. Demirci, and M. Karhan. 2009. Enhanced ethanol production from carob extract by Saccharomyces cerevisiae. BioEnergy Bridge Kickoff Workshop. Pennsylvania State University, University Park, PA.
  • Demirci, A. 2009. Microbiological engineering. Dept. of Chemical Engineering. Pennsylvania State University, University Park, PA.
  • Cheng, K.C., A. Demirci, and J.M. Catchmark. 2010. Enhanced pullulan production in a biofilm reactor by using response surface methodology. The College of Engineering Research Symposium. Penn State University, University Park, PA.
  • Izmirlioglu, G. and A. Demirci. 2010. Ethanol production from waste potato mash by using Saccharomyces cerevisiae. The College of Engineering Research Symposium. Penn State University, University Park, PA.
  • Izmirlioglu, G. and A. Demirci. 2010. Ethanol production from waste potato mash by using Saccharomyces cerevisiae. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Cheng, K.C., A. Demirci, and J.M. Catchmark, 2010. Enhanced pullulan production in a PCS biofilm reactor by using response surface methodology. College of Agricultural Sciences Gamma Sigma Delta Undergraduate and Graduate Research Expo. Penn State University, University Park, PA.
  • Izmirlioglu, G. and A. Demirci. 2010. Ethanol production from waste potato mash by using Saccharomyces cerevisiae. 25th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Cheng, K.C., A. Demirci, and J. M. Catchmark, 2010. Enhanced pullulan production in a PCS biofilm reactor by using response surface methodology. 25th Annual Graduate Exhibition Poster and Visual Arts Options. Penn State University, University Park, PA.
  • Cheng, K.C., A. Demirci, and J.M. Catchmark. 2010. Enhanced bacterial cellulose production in biofilm reactor by using carboxymethyl cellulose supplemented medium. Annual International Meeting of The Institute of Biological Engineering. Boston, MA. Abstract # 27.
  • Cheng, K.C., J.M. Catchmark, V.M. Puri, and A. Demirci. 2010 Effects of ammonium sulfate concentration on pullulan production by Aureobasidium pullulans. Annual International Meeting of The Institute of Biological Engineering. Boston, MA. Abstract # 28.
  • Demirci, A. 2010. Microbiological Engineering: Research Update. Bilkent University, Ankara, Turkey.
  • Demirci, A. 2010. Novel technologies for food safety and bioprocessing. Islamic University of Sultan Syarif Kasim, Pekanbaru, Indonesia.
  • Chirdon, B. and A. Demirci. 2010. EO water-research and field experiences. Dairy Practices Council. 41st Annual Conference. Columbus, OH.
  • Demirci, A. 2010. Microbiological Engineering: Research Update. Ondokuz Mayis University, Samsun, Turkey.
  • Demirci, A. 2010. Higher Education System in the U.S. Ondokuz Mayis University, Samsun, Turkey.
  • Demirci, A. 2010. Higher Education System in the U.S. Gazikent University, Gaziantep, Turkey.
  • Keklik N.M, A. Demirci, V.M. Puri, P.H. Heinemann. 2011. Modeling the inactivation of Salmonella Typhimurium, Listeria monocytogenes, and Salmonella Enteritidis on poultry products exposed to pulsed UV-light. 7th Food Engineering Conference. pp 298. Ankara, Turkey.

Citations In News Media

  • Article on “What’s on Your Plate” published in Engineering Magazine of the Penn State College of Engineering included Dr. Demirci’s research on novel techniques for disinfecting fresh fruits, vegetables, raw or ready-to-eat meat. Summer 2001.
  • Article regarding Dr. Demirci’s research activities on “Pulsed UV-Light Sterilization” published in various news media including Penn State News. August 2001.
  • Article on “Penn State Labs to Make Food Safer” published in Lancaster Farming includes Dr. Demirci’s research on novel technologies for food safety. July 2001.
  • Article on “Natural-Borne Killers” published in Prism Magazine of American Society for Engineering Education (ASEE) included Dr. Demirci’s research on novel technologies for food safety. October 2002.
  • Article on “Keeping Our Food Safe” published in The World & I Magazine of Washington Times Corporation included Dr. Demirci’s research on novel technologies for food safety. September 2003.
  • Article on “Combating Terror at Home” published in Engineering Magazine of Penn State College of Engineering included Dr. Demirci’s research on novel technologies for cleaning and sanitizing foods. Summer 2004.
  • Article on “Researcher Developing Non-thermal Ways to Kill Food Pathogens” published on Penn State College of Agricultural Sciences’ website, which included Dr. Demirci’s research on novel technologies. February 2006.
  • Article on “Experts find better way to scrub milking hardware” published on Penn State Live website, The University’s Official News Source, which included Dr. Demirci’s research on novel technology for cleaning milking equipment. January 2006.
  • Article on “Pulsed UV light shows promise in delivering a safer egg” published on Penn State Huck Institutes of the Life Sciences’ website, which included Dr. Demirci’s research on pulsed UV-light technology. August 2010.

Patents

  • Pometto III, L. A., A. Demirci, and K. E. Johnson. 1997. Immobilization of microorganisms on a support made of synthetic polymer and plant material. U.S. Patent Number: 5,595,893. U.S. Patent Office. Washington, D.C.
  • Beelman, R. B., and A. Demirci. 2002. Process for antimicrobial treatment of fresh produce, particularly mushrooms U.S. Patent Number: 7,048,956. U.S. Patent Office. Washington, D.C.