Ali Demirci, Ph.D.

Ali Demirci, Ph.D.

  • Professor of Agricultural and Biological Engineering
  • Bioprocess and Food Safety Engineering
221 Agricultural Engineering Building
Shortlidge Road

University Park, PA 16802

Areas of Expertise

  • Bioprocess Engineering/Fermentation: Bioconversion of agricultural raw and waste commodities into value added products including bioenergy/biofuels, microbial enzymes, organic acids, polysaccharides, antimicrobial agents; optimization; novel bioreactors; downstream processing.
  • Food Engineering/Food Safety : inactivation of pathogenic and spoilage microorganisms by using novel non-thermal processing technologies including pulsed UV light, electrolyzed oxidizing water, and ozone.

Education

  • Iowa State University, Ph.D.

Teaching 

  • B E 308  Engineering Elements of Biochemistry and Microbiology (3)
  • B E 468  Microbiological Engineering (3)
  • A B E 568  Food Safety Engineering (3)
  • A B E 888 Conversion Technologies for Bioenergy Production (3, online)

For information about courses please visit the LionPATH Course Catalog.

Publications

A Statistical Optimization Study on Dilute Sulfuric Acid Pretreatment of Distillers Dried Grains with Solubles (DDGS) As a Potential Feedstock for Fermentation Applications
Waste and Biomass Valorization, Cekmecelioglu, Deniz, Demirci, Ali, 2019

Optimization of dilute sulfuric acid, aqueous ammonia, and steam explosion as the pretreatments steps for distillers’ dried grains with solubles as a potential fermentation feedstock
Bioresource technology, Iram, Attia, Cekmecelioglu, Deniz, Demirci, Ali, 2019

Kinetic modeling and techno-economic feasibility of ethanol production from carob extract based medium in biofilm reactor
Applied Sciences (Switzerland), Germec, Mustafa, Turhan, Irfan, Karhan, Mustafa, Demirci, Ali, 2019

Effects of medium components in a glycerol-based medium on vitamin K (menaquinone-7) production by Bacillus subtilis natto in biofilm reactors
Bioprocess and biosystems engineering, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2019

Inactivation of Escherichia coli and Salmonella in liquid egg white by pulsed UV light and its effects on quality
Journal of Food Process Engineering, Ouyang, Beining, Demirci, Ali, Patterson, Paul H., 2019

Inactivation of Staphylococcus aureus and Escherichia coli O157:H7 on fresh kashar cheese with pulsed ultraviolet light
Food Science and Technology International, Keklik, Nene M., Elik, Adil, Salgin, Uğur, Demirci, Ali, Koçer, Gamze, 2019

Enhanced vitamin K (Menaquinone-7) production by Bacillus subtilis natto in biofilm reactors by optimization of glucose-based medium
Current Pharmaceutical Biotechnology, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2019

Application of mathematical models to ethanol fermentation in biofilm reactor with carob extract
Biomass Conversion and Biorefinery, Germec, Mustafa, Cheng, Kuan Chen, Karhan, Mustafa, Demirci, Ali, Turhan, Irfan, 2019

Modeling of vitamin K (Menaquinoe-7) fermentation by Bacillus subtilis natto in biofilm reactors
Biocatalysis and Agricultural Biotechnology, Mahdinia, Ehsan, Mamouri, Sina Jahangiri, Puri, Virendra, Demirci, Ali, Berenjian, Aydin, 2019

Ethanol production in a biofilm reactor with non-sterile carob extract media and its modeling
Energy Sources, Part A: Recovery, Utilization and Environmental Effects, Germec, Mustafa, Karhan, Mustafa, Demirci, Ali, Turhan, Irfan, 2018

Implementation of fed-batch strategies for vitamin K (menaquinone-7) production by Bacillus subtilis natto in biofilm reactors
Applied Microbiology and Biotechnology, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2018

Evaluation of non-thermal hurdle technology for ultraviolet-light to inactivate Escherichia coli K12 on goat meat surfaces
Food Control, Degala, Hema L., Mahapatra, Ajit K., Demirci, Ali, Kannan, Govind, 2018

Mathematical modeling of lactic acid fermentation in bioreactor with carob extract
Biocatalysis and Agricultural Biotechnology, Germec, Mustafa, Karhan, Mustafa, Bialka, Katherine L., Demirci, Ali, Turhan, Irfan, 2018

Utilization of glucose-based medium and optimization of Bacillus subtilis natto growth parameters for vitamin K (menaquinone-7) production in biofilm reactors
Biocatalysis and Agricultural Biotechnology, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2018

Simultaneous saccharification and fermentation of ethanol from potato waste by co-cultures of Aspergillus niger and Saccharomyces cerevisiae in biofilm reactors
Fuel, Izmirlioglu, Gulten, Demirci, Ali, 2017

Strain and plastic composite support (PCS) selection for vitamin K (Menaquinone-7) production in biofilm reactors
Bioprocess and Biosystems Engineering, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2017

Production and application of Menaquinone-7 (Vitamin K2): A new perspective
World Journal of Microbiology and Biotechnology, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2017

Improved simultaneous saccharification and fermentation of bioethanol from industrial potato waste with co-cultures of Aspergillus niger and Saccharomyces cerevisiae by medium optimization
Fuel, Izmirlioglu, Gulten, Demirci, Ali, 2016

Recent advances for production and recovery methods of lysozyme
Critical Reviews in Biotechnology, Ercan, Duygu, Demirci, Ali, 2016

Effect of media sterilization and enrichment on ethanol production from carob extract in a biofilm reactor
Energy Sources, Part A: Recovery, Utilization and Environmental Effects, Germec, Mustafa, Turhan, Irfan, Demirci, Ali, Karhan, Mustafa, 2016

Ethanol production in biofilm reactors from potato waste hydrolysate and optimization of growth parameters for Saccharomyces cerevisiae
Fuel, Izmirlioglu, Gulten, Demirci, Ali, 2016

Strain selection and medium optimization for glucoamylase production from industrial potato waste by Aspergillus niger
Journal of the science of food and agriculture, Izmirlioglu, Gulten, Demirci, Ali, 2016

Disinfection of synthetic and real municipal wastewater effluent by flow-through pulsed UV-light treatment system
Journal of Water Process Engineering, Uslu, Gulsad, Demirci, Ali, Regan, John M., 2016

Ultrasound-assisted dilute acid hydrolysis of tea processing waste for production of fermentable sugar
Biotechnology progress, Germec, Mustafa, Tarhan, Kübra, Yatmaz, Ercan, Tetik, Nedim, Karhan, Mustafa, Demirci, Ali, Turhan, Irfan, 2016

Enhanced phenylpyruvic acid production with Proteus vulgaris by optimizing of the fermentation medium
Acta Alimentaria, Coban, H. B., Demirci, A., Patterson, P. H., Elias, R. J., 2016

Enhanced phenylpyruvic acid production with Proteus vulgaris in fed-batch and continuous fermentation
Preparative Biochemistry and Biotechnology, Coban, Hasan B., Demirci, Ali, Patterson, Paul H., Elias, Ryan, 2016

Enhancement and modeling of microparticle-added Rhizopus oryzae lactic acid production
Bioprocess and biosystems engineering, Coban, Hasan Bugra, Demirci, Ali, 2016

Effects of fed-batch and continuous fermentations on human lysozyme production by Kluyveromyces lactis K7 in biofilm reactors
Bioprocess and biosystems engineering, Ercan, Duygu, Demirci, Ali, 2015

Improved submerged Aspergillus ficuum phytase production in bench-top bioreactors by optimization of fermentation medium
Acta Alimentaria, Coban, H. B., Demirci, A., 2015

Ethanol production via repeated-batch fermentation from carob pod extract by using Saccharomyces cerevisiae in biofilm reactor
Fuel, Germec, Mustafa, Turhan, Irfan, Karhan, Mustafa, Demirci, Ali, 2015

Enhanced bio-ethanol production from industrial potato waste by statistical medium optimization
International journal of molecular sciences, Izmirlioglu, Gulten, Demirci, Ali, 2015

Enhanced Aspergillus ficuum phytase production in fed-batch and continuous fermentations in the presence of talcum microparticles
Bioprocess and Biosystems Engineering, Coban, Hasan B., Demirci, Ali, Turhan, Irfan, 2015

Enhanced human lysozyme production by Kluyveromyces lactis K7 in biofilm reactor coupled with online recovery system
Biochemical Engineering Journal, Ercan, Duygu, Demirci, Ali, 2015

Microparticle-enhanced Aspergillus ficuum phytase production and evaluation of fungal morphology in submerged fermentation
Bioprocess and Biosystems Engineering, Coban, Hasan B., Demirci, Ali, Turhan, Irfan, 2015

Mathematical modeling and cycle time reduction of deposit removal from stainless steel pipeline during cleaning-in-place of milking system with electrolyzed oxidizing water
Journal of Food Engineering, Wang, Xinmiao, Puri, Virendra, Demirci, Ali, Graves, Robert E., 2015

Enhanced phenylpyruvic acid production with Proteus vulgaris in fed-batch and continuous fermentation
Preparative Biochemistry and Biotechnology, Coban, H, Demirci, Ali, Patterson, Paul, Elias, Ryan, 2015

Enhanced submerged Aspergillus ficuum phytase production by implementation of fed-batch fermentation
Bioprocess and biosystems engineering, Coban, Hasan B., Demirci, Ali, 2014

Enhanced human lysozyme production in biofilm reactor by Kluyveromyces lactis K7
Biochemical Engineering Journal, Ercan, Duygu, Demirci, Ali, 2014

Screening of phenylpyruvic acid producers and optimization of culture conditions in bench scale bioreactors
Bioprocess and biosystems engineering, Coban, Hasan B., Demirci, Ali, Patterson, Paul H., Elias, Ryan J., 2014

Decontamination of hard cheeses by pulsed UV light
Journal of Food Protection, Can, Fidan O., Demirci, Ali, Puri, Virendra M., Gourama, Hassan, 2014

Semi-continuous bacterial cellulose production in a rotating disk bioreactor and its materials properties analysis
Cellulose, Lin, Shin Ping, Hsieh, Shu Chen, Chen, Kuan I., Demirci, Ali, Cheng, Kuan Chen, 2014

Response surface optimization of the cultivation conditions and medium composition a novel probiotic strain Bacillus pumilus STF26
International Food Research Journal, Han, D., San, N. O., Angun, P., Onarman Umu, O. C., Demirci, Ali, Tekinay, T., 2014

Optimization and modeling of an electrolyzed oxidizing water based Clean-In-Place technique for farm milking systems using a pilot-scale milking system
Journal of Food Engineering, Dev, Satyanarayan R.S., Demirci, Ali, Graves, Robert E., Puri, Virendra, 2014

Screening of phytase producers and optimization of culture conditions for submerged fermentation
Bioprocess and biosystems engineering, Coban, Hasan B., Demirci, Ali, 2014

Electrolyzed oxidizing water for cleaning-in-place of on-farm milking systems - Performance evaluation and assessment
Applied Engineering in Agriculture, Wang, X., Dev, S. R S, Demirci, Ali, Graves, R. E., Puri, Virendra, 2013

Production of human lysozyme in biofilm reactor and optimization of growth parameters of Kluyveromyces lactis K7
Applied Microbiology and Biotechnology, Ercan, Duygu, Demirci, Ali, 2013

Inactivation and injury of listeria monocytogenes under combined effect of pressure and temperature in UHT whole milk
Journal of Food Process Engineering, Mishra, Niharika, Puri, Virendra, Demirci, Ali, 2013

Comparison of Radial and Axial Flow Chromatography for monoclonal antibody downstream processing at bench and pilot scales
American Journal of Biochemistry and Biotechnology, Demirci, Ali, Leu, Frank, Bailey, F. James, 2012

Modeling the inactivation of salmonella typhimurium, listeria monocytogenes, and salmonella enteritidis on poultry products exposed to pulsed UV light
Journal of Food Protection, Keklik, Nene M., Demirci, Ali, Puri, Virendra, Heinemann, Paul Heinz, 2012

Electrolyzed oxidizing water technology
Resource: Engineering and Technology for Sustainable World, Dev, Satyanarayan R S, Cheng, Kuan Chen, Demirci, Ali, 2011

Surface decontamination of whole chicken carcasses using a pilot-scale pulsed UV light system
Transactions of the ASABE, Keklik, N. M., Demirci, Ali, Bock, Randall Gray, 2011

Continuous pullulan fermentation in a biofilm reactor
Applied Microbiology and Biotechnology, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., 2011

Evaluation of medium composition and fermentation parameters on pullulan production by Aureobasidium pullulans
Food Science and Technology International, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., 2011

Effects of CMC addition on bacterial cellulose production in a biofilm reactor and its paper sheets analysis
Biomacromolecules, Cheng, Kuan Chen, Catchmark, Jeffrey M., Demirci, Ali, 2011

Effects of initial ammonium ion concentration on pullulan production by Aureobasidium pullulans and its modeling
Journal of Food Engineering, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., Puri, Virendra, 2011

Effect of in-package gaseous ozone treatment on shelf life of blanched potato strips during refrigerated storage
International Journal of Food Science and Technology, Oner, Manolya E., Walker, Paul N., Demirci, Ali, 2011

Decontamination of unpackaged and vacuum-packaged boneless chicken breast with pulsed ultraviolet light
Poultry science, Keklik, N. M., Demirci, A., Puri, V. M., 2010

Enhanced lactic acid production from carob extract by lactobacillus casei using invertase pretreatment
Food Biotechnology, Turhan, Irfan, Bialka, Katherine L., Demirci, Ali, Karhan, Mustafa, 2010

Ethanol production from carob extract by using Saccharomyces cerevisiae
Bioresource technology, Turhan, Irfan, Bialka, Katherine L., Demirci, Ali, Karhan, Mustafa, 2010

Modeling of pullulan fermentation by using a color variant strain of Aureobasidium pullulans
Journal of Food Engineering, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., Puri, Virendra, 2010

Enhanced pullulan production in a biofilm reactor by using response surface methodology
Journal of Industrial Microbiology and Biotechnology, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., 2010

Effects of plastic composite support and pH profiles on pullulan production in a biofilm reactor
Applied Microbiology and Biotechnology, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., 2010

Pulsed UV light inactivation of salmonella enteritidis on eggshells and its effects on egg quality
Journal of Food Protection, Keklik, Nene M., Demirci, Ali, Patterson, Paul H., Puri, Virendra, 2010

Microscopic and spectroscopic evaluation of inactivation of staphylococcus aureus by pulsed UV light and infrared heating
Food and Bioprocess Technology, Krishnamurthy, Kathiravan, Tewari, Jagdish C., Irudayaraj, Joseph, Demirci, Ali, 2010