Ali Demirci, Ph.D.

Ali Demirci, Ph.D.

  • Professor of Agricultural and Biological Engineering
  • Graduate Studies Committee Chair
  • Professor-in-Charge of the CSL Behring Fermentation Facility
436 Shortlidge RD
Agricultural Engineering Building, Rm. 221

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 

  • BE 308 - Engineering Elements of Biochemistry and Microbiology
  • BE 468 - Microbiological Engineering
  • ABE 568 - Food Safety Engineering
  • BRS 568 - Applied Biomanufacturing Laboratory (co-taught)
  • ABE 888 - Conversion Technologies for Bioenergy Production (online)

For information about courses please visit the LionPATH Course Catalog.

Publications

Application of pulsed light in liquid foods, Keklik, Nene, Demirci, Ali, 2024

Sustainable menaquinone-7 production through continuous fermentation in biofilm bioreactors
Bioprocess and Biosystems Engineering, Berenjian, Aydin, Mahdinia, Ehsan, Demirci, Ali, 2024

Pulsed ultraviolet light, Ouyang, Beining, Krishnamurthy, Kathiravan, Demirci, Ali, 2024

Electrolyzed oxidizing water, Dev, Satyanarayan, Bialka, Katherine, Demirci, Ali, 2024

Approaches for Producing Fungal Cellulases Through Submerged Fermentation
Frontiers in Bioscience - Elite, Nazir, Madiha, Iram, Attia, Cekmecelioglu, Deniz, Demirci, Ali, 2024

Biogas production from lignocellulosic biomass, opportunities and challenges: a review on sustainable energy from Malaysian perspectives
Journal of Palm Oil Research, Ab Aziz, I., Che Man, H., Hamzah, M., Omar, R., Jamali, N., Katibi, K., Demirci, Ali, 2024

Production of Value-Added Products as Food Ingredients via Microbial Fermentation
Processes, Iram, Attia, Ozcan, Ali, Turhan, Irfan, Demirci, Ali, 2023

Pulsed Ultraviolet Light Decontamination of Meat Conveyor Surfaces1
Food Science and Technology International, Cassar, Joshua R., Mills, Edward W., Demirci, Ali, 2022

Characterization of pulsed light for microbial inactivation
Journal of Food Engineering, Cassar, Joshua R., Mills, Edward William, Demirci, Ali, 2022

Effect of Microparticles on Fungal Fermentation for Fermentation-Based Product Productions
Processes, Iram, Attia, Özcan, Ali, Yatmaz, Ercan, Turhan, İrfan, Demirci, Ali, 2022

Interactions of Torrefaction and Alkaline Pretreatment with Respect to Glucose Yield of Hydrolyzed Wheat Straw
Biomass (Switzerland), Tripathi, Jaya, Richard, T, Memis, Berrak, Demirci, Ali, Ciolkosz, Daniel, 2022

The effect of dilution factor, agitation, and aeration on cellulase and hemicellulase production in the DDGS-based media by Aspergillus niger strains, Iram, Attia, Demirci, Ali, Cekmecelioglu, Deniz, 2022

The optimization of inoculum, agitation, and aeration for production of hydrolytic enzymes in DDGS-based media by Aspergillus niger, Iram, Attia, Demirci, Ali, Cekmecelioglu, Deniz, 2022

Development of bioactive solid support for immobilized Lactobacillus casei biofilms and the production of lactic acid
Bioprocess and Biosystems Engineering, Bastarrachea, Luis, Britt, David, Ward, Robert, Demirci, Ali, 2022

Development of Bioactive Solid Support for Immobilized Lactococcus lactis Biofilms in Bioreactors for the Production of Nisin
Food and Bioprocess Technology, Bastarrachea, Luis J., Britt, David W., Demirci, Ali, 2022

Effects of pullulan additive and co-culture of Aureobasidium pullulans on bacterial cellulose produced by Komagataeibacter hansenii
Bioprocess and Biosystems Engineering, Hu, Hetian, Catchmark, Jeffrey M., Demirci, Ali, 2022

Pulsed ultraviolet light decontamination of meat conveyor contact surfaces
Food Science and Technology International, Cassar, Joshua, Mills, E, Demirci, Ali, 2022

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, 2021

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

Co-culture fermentation on the production of bacterial cellulose nanocomposite produced by Komagataeibacter hansenii
Carbohydrate Polymer Technologies and Applications, Hu, Hetian, Catchmark, Jeffrey M., Demirci, Ali, 2021

Pulsed Ultraviolet Light Treatment of Chicken Parts
Meat and Muscle Biology, Cassar, Joshua, Mills, Edward W., Campbell, Jonathan, Demirci, Ali, 2021

The efficacy of pulsed ultraviolet light processing for table and hatching eggs
Poultry Science, Cassar, Joshua, Bright, Lindsey, Patterson, P. H., Mills, E. W., Demirci, A., 2020

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

Biofilms in fermentation for the production of value-added products, Mahdinia, Ehsan, 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: An in-depth review
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

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

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

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

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

Study of a novel co-culturing fermentation for bacterial cellulose nanocomposite production
2020 ASABE Annual International Meeting, Hu, Hetian, Catchmark, Jeffrey M., Demirci, Ali, 2020

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

Surface decontamination of white cheese by pulsed UV light treatment
Journal of Food Safety and Food Quality, Keklik, Nene, Elik, Adil, Salgin, Ugur, Demirci, Ali, Kocer, Gamze, 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

Bioreactor scale up, Mahdinia, Ehsan, Cekmecelioglu, Deniz, Demirci, Ali, 2019

Screening of bacterial and fungal strains for cellulase and xylanase production using distillers’ dried grains with solubles as the main feedstock, 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

Pulsed UV light as a microbial reduction intervention for boneless/skinless chicken thigh meat
Meat and Muscle Biology, Cassar, Joshua, Mills, E, Campbell, J, Demirci, Ali, 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

The need for food engineering
Resource: Engineering and Technology for Sustainable World, Demirci, Ali, 2019

Decontamination of Chicken Thigh Meat by Pulsed Ultraviolet Light
Meat and Muscle Biology, Cassar, Joshua, Mills, Edward W., Campbell, Jonathan A., 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, Puri, V, 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

Pulsed UV light as a microbial reduction intervention for boneless/skinless chicken thigh meat, Cassar, Joshua, Mills, E, Demirci, Ali, Campbell, J, 2018

Pulsed UV light inactivation of E. coli in liquid egg white, Ouyang, Beining, Demirci, Ali, Patterson, P, 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

Comparison of pure and co-culture ethanol fermentations in biofilm reactors, Izmirlioglu, Gulten, Demirci, Ali, 2017

Ethanol production from carob extract by using Saccharomyces cerevisiae in biofilm reactor., Germec, Mustafa, Turhan, Irfan, Karhan, Mustafa, Demirci, Ali, 2017

Optimization of growth parameters and media for vitamin K (MK-7) production by Bacillus subtilis, Mahdinia, Ehsan, Demirci, Ali, Berenjian, Aydin, 2017

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

Phytase as a Diet Ingredient: From Microbial Production to Its Applications in Food and Feed Industry
MICROBIAL PRODUCTION OF FOOD INGREDIENTS AND ADDITIVES, Coban, Hasan, Demirci, Ali, 2017

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

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

Electrolyzed Oxidizing Water for Food and Equipment Decontamination
Handbook of Hygiene in the Food Industry, Wang, X., Demirci, A., Puri, V. M., 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

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

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

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 J., 2016

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

Biofilms in Dairy Products and Dairy Processing Equipment and Control Strategies, Wang, Xinmiao, Demirci, Ali, Puri, Virendra M., 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 the Food Environment: Second Edition, Pometto, Anthony L., Demirci, Ali, 2015

Preface, Pometto, Anthony L., 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

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

Current and future trends for biofilm reactors for fermentation processes
Critical Reviews in Biotechnology, 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

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

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, H, Demirci, Ali, Patterson, Paul, Elias, Ryan J., 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

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

Comparison of continuous fermentations in biofilm and suspended-cell bioreactors for production of human lysozyme, Ercan, Duygu, Demirci, Ali, 2014

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

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

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

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

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