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

The efficacy of pulsed ultraviolet light processing for table and hatching eggs
Poultry Science, Cassar, J. R., Bright, L. M., Patterson, P. H., Mills, E. W., Demirci, A., 2021

Electrolyzed Oxidizing Water and Its Applications as Sanitation and Cleaning Agent
Food Engineering Reviews, Iram, Attia, Wang, Xinmiao, Demirci, Ali, 2021

Utilization of pulsed UV light for inactivation of Salmonella Enteritidis on shelled walnuts
LWT - Food Science and Technology, Izmirlioglu, Gulten, Ouyang, Beining, Demirci, Ali, 2020

Mathematical modeling of batch bioethanol generation from carob extract in the suspended-cell stirred-tank bioreactor
International Journal of Energy Research, Germec, Mustafa, Karhan, Mustafa, Demirci, Ali, Turhan, Irfan, 2020

Biofilm reactors for value-added products production
Biocatalysis and Agricultural Biotechnology, Germec, Mustafa, Demirci, Ali, Turhan, Irfan, 2020

Distillers’ dried grains with solubles (DDGS) and its potential as fermentation feedstock
Applied Microbiology and Biotechnology, Iram, Attia, Cekmecelioglu, Deniz, Demirci, Ali, 2020

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, 2020

Food Safety Engineering, Demirci, Ali, Feng, Hao, Krishnamurthy, Kathiravan, 2020

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., 2020

Technologies for microbial production of food ingredients, Ercan-Oruc, Duygu, Pometto III, Anthony, Demirci, Ali, 2020

Equipment Cleaning, Sanitation, and Maintenance, Wang, Xinmiao, Puri, Virendra M., Demirci, Ali, 2020

Preface
Food Engineering Series, Demirci, Ali, Feng, Hao, Krishnamurthy, Kathiravan, 2020

Microbial Decontamination of Food by Light-Based Technologies, Cassar, Joshua R., Ouyang, Beining, Krishnamurthy, Kathiravan, Demirci, Ali, 2020

Microbial Growth Models, Mahdinia, Ehsan, Liu, Shaowei, Demirci, Ali, Puri, Virendra M., 2020

Implementation of flexible models to bioethanol production from carob extract–based media in a biofilm reactor
Biomass Conversion and Biorefinery, Germec, Mustafa, Karhan, Mustafa, Demirci, Ali, Turhan, Irfan, 2020

Inactivation of Escherichia coli K-12 in liquid egg white by a flow-through pulsed UV light treatment system
Journal of Food Protection, Ouyang, Beining, Demirci, Ali, Patterson, Paul H., 2020

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

The need for food engineering, Demirci, Ali, 2019

Biofilm reactors as a promising method for vitamin K (menaquinone-7) production
Applied Microbiology and Biotechnology, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 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

The need for food engineering
Resource: Engineering and Technology for Sustainable World, Demirci, Ali, 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

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

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

Conventional and emerging clean-in-place methods for the milking systems, Wang, Xinmiao, Demirci, Ali, Graves, Robert E., Puri, Virendra M., 2018

Feasibility of DDGS for production of cellulase and xylanase enzymes cocktail, Cekmecelioglu, Deniz, Demirci, Ali, 2017

Production and application of menaquinone-7 (vitamin K2)
World Journal of Microbiology and Biotechnology, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 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

Recent advances for the 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

Ozone for food decontamination: Theory and Applications, Oner, Manolya, Demirci, Ali, 2016

Ozone for Food Decontamination, Oner, M. E., Demirci, A., 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

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

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

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

Ethanol production from carob extract by using Saccharomyces cerevisiae in biofilm reactor, Germec, Mustafa, Turhan, Irfan, Karhan, Mustafa, Demirci, Ali, 2016

Optimization of ultrasound-assisted dilute acid hydrolysis conditions of tea processing waste, Germec, Mustafa, Tarhan, Kubra, Yatmaz, Ercan, Tetik, Nedim, Karhan, Mustafa, Demirci, Ali, Turhan, Irfan, 2016

Evaluation of blended electrolyzed oxidizing water-based cleaning-in-place (CIP) technique using a laboratory-scale milking system
Transactions of the ASABE, Wang, X., Demirci, Ali, Puri, Virendra, Graves, R. E., 2016

Enhanced bio-ethanol production from industrial potato waste by statistical medium optimization
International Journal of Molecular Sciences, Izmirlioglu, Gulten, Demirci, Ali, 2015

Preface, Pometto, Anthony L., Demirci, Ali, 2015

Biofilms in the Food Environment, Pometto, Anthony L., Demirci, Ali, 2015

Applications of Biofilm Reactors for Production of Value-Added Products by Microbial Fermentation, Ercan, Duygu, Pongtharangkul, Thunyarat, Demirci, Ali, Pometto, Anthony L., 2015

Biofilms in Dairy Products and Dairy Processing Equipment and Control Strategies, Wang, Xinmiao, Demirci, Ali, Puri, Virendra M., 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

Efficacy of pulsed UV-light treatment on wastewater effluent disinfection and suspended solid reduction
Journal of Environmental Engineering, ASCE, Uslu, Gulsad, Demirci, Ali, Ragan, John, 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

Current and future trends for biofilm reactors for fermentation processes
Critical Reviews in Biotechnology, Ercan, Duygu, Demirci, Ali, 2015

One-step cleaning-in-place for milking systems and mathematical modeling for deposit removal from stainless steel pipeline using blended electrolyzed oxidizing water, Wang, Xinmiao, Puri, Virendra M., Demirci, Ali, Graves, Robert E., 2015

Mathematical modeling of deposit removal from stainless steel pipeline during cleaning-in-place of milking system with electrolyzed oxidizing water, Wang, Xinmiao, Puri, Virendra M., Demirci, Ali, Graves, Robert E., 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

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

Fermentation and Enzyme Technologies in Food Processing, Demirci, Ali, Izmirlioglu, Gulten, Ercan, Duygu, 2014

Screening of phytase producers and optimization of culture conditions for submerged fermentation
Bioprocess and Biosystems Engineering, Coban, Hasan B., Demirci, Ali, 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

Simultaneous online recovery of human lysozyme produced by kluyveromyces lactis K7 in biofilm reactor, Ercan, Duygu, Demirci, Ali, 2014

Optimization of a blended electrolyzed oxidizing water-based Cleaning-In-Place technique using a pilot scale milking system, Wang, Xinmiao, Demirci, A. M., Puri, Virendra M., Graves, Robert E., 2014

Modeling of deposit removal from milk contact surfaces in water rinse cycle during milking system cleaning-in-place process, Wang, Xinmiao, Puri, Virendra M., Demirci, A. M., Graves, Robert E., 2014

Strain selection and medium optimization for aspergillus ni gerand saccharomyces ce revis iae for ethanol fermentation, Izmirlioglu, Gulten, Demirci, Ali, 2014

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

Screening of phytase producer microorganisms and optimization of growth conditions in submerged fermentation, Coban, Hasan B., Demirci, Ali, 2014

Conversion of phenylalanine to phenylpyruvic acid by microbial fermentation, Coban, Hasan B., Demirci, Ali, Patterson, Paul H., Elias, Ryan, 2014

Disinfection of synthetic and real municipal wastewater effluent by flow-through pulsed UV-light treatment systems, Uslu, Gulsad, Demirci, Ali, Ragan, John, 2014

Comparison of continuous fermentations in biofilm and suspended-cell bioreactors for production of human lysozyme, Ercan, Duygu, Demirci, Ali, 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, A., Tekinay, T., 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

Biosynthesis, production and applications of bacterial cellulose
Cellulose, Lin, Shin Ping, Loira Calvar, Iris, Catchmark, Jeffrey M., Liu, Je Ruei, Demirci, Ali, Cheng, Kuan Chen, 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

Optimization of human lysozyme production by Kluyveromyces lactis K7 in biofilm reactors, Ercan, Duygu, Demirci, Ali, 2013

Microbiological safety and decontamination of chicken eggs, Dev, Satyanarayan R.S., Keklik, Nene M., Demirci, Ali, Raghavan, G. S.Vijaya, 2013

Fed-batch fermentation for human lysozyme production by Kluyveromyces lactis K7 in biofilm reactors, Ercan, Duygu, Demirci, Ali, 2013

Evaluation of electrolyzed oxidizing water for cleaning-in-place of on-farm milking systems, Wang, Xinmiao, Dev, Satyanarayan R.S., Demirci, Ali, Graves, Robert E., Puri, Virendra M., 2013

Disinfection of synthetic municipal wastewater effluent by pulsed UV-light treatment, Uslu, Gulsad, Demirci, Ali, Ragan, John, 2013

Electrolyzed oxidizing water for microbial decontamination of food, Cheng, Kuan Chen, Dev, Satyanarayan R.S., Bialka, Katherine L., Demirci, Ali, 2012

Microbial decontamination in the food industry, Demirci, Ali, Ngadi, Michael O., 2012

Microbial decontamination of food by ultraviolet (UV) and pulsed UV light, Keklik, N. M., Krishnamurthy, K., Demirci, A., 2012

Preface, Demirci, Ali, Ngadi, Michael O., 2012

Process Design Involving Pulsed UV Light, Demirci, Ali, Keklik, Nene M., 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

Optimization of human lysozyme production by Kluyveromyces lactis K7 in biofilm reactor, Ercan, Duygu, Demirci, Ali, 2012

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

Pullulan
Applied Microbiology and Biotechnology, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., 2011

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, A., Bock, R. G., 2011

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

Pulsed Ultraviolet Light, Demirci, Ali, Krishnamurthy, Kathiravan, 2011

Electrolyzed Oxidizing Water, Demirci, Ali, Bialka, Katherine L., 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 M., 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

Continuous pullulan fermentation in a PCS biofilm reactor, Cheng, Kuan Chen, Demirci, Ali, Catchmark, Jeffrey M., 2011

Modeling the inactivation of Salmonella typhimurium, Listeria monocytogenes, and Salmonella enteritidis on poultry products exposed to pulsed UV-light, Keklik, Nene M., Demirci, Ali, Puri, Virendra, Heinemann, Paul Heinz, 2011

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