• Popovic, M.K., Skelac, L., Wewetzer, S., Karschöldgen, A., Bader, J. (2019) Influence of different CO₂ concentrations in aeration air during thermophilic fermentation of Bacillus caldolyticus. ECAB 5, 15th.-19th.09.2019, Florence, Italy
• Bader, J., Brigham, C., Stahl, U., Popovic, M. (2019) Fermented beverages produced by mixed cultures, pure cultures and defined co-cultures. EMERGING TRENDS AND DEVELOPMENTS IN BEVERAGE SCIENCE (Multi Volume SET I-XX) – editor: Grumezescu, A. ELSEVIER, Woodhead Publishing, eBook ISBN: 9780128157039
• Subramaniam, R., Thirumal, V., Chistoserdov, A., Bajpai, R., Bader J., Popović, M. (2018) High-density Cultivation in the Production of Microbial Products. CABEQ 32 (4) 451–464. doi: 10.15255/CABEQ.2018.1394
• Berovic, M., Popovic, M. (2018) Submerged cultivation of Ganoderma lucidum biomass in stirred tank reactor. CABEQ 32 (4) 465-472. doi: 10.15255/CABEQ.2018.1371
• Thirumal, V., Chistoserdov, A., Bajpai, R., Bader, J., Popovic, M., Subramaniam, R. (2018) Effect of Developed Low Cost Minimal Medium on Lipid and Exopolysaccharide Production by Lipomyces starkeyi Under Repeated Fed-batch and Continuous Cultivation. CABEQ 32 (4) 473–481. doi: 10.15255/CABEQ.2018.1389
• Bader, J., Brigham, C., Stahl, U., Popovic, M. (2018) Development of controlled co-cultivations for reproducible results in fermentation processes in food biotechnology. In Advances in Biotechnology for Food Industry, Volume 14, 1st Edition, Editors: Grumezescu, A., Holban, A.M., Elsevier, Cambridge, MA, USA, eBook ISBN: 9780128114957. 135-166
• Subramaniam, R., Thirumal, V., Bajpai, R., Chistoserdov, A., Esser, M., Bader, J., Milan Popovic, M. (2017) Characterization of fermentation products from high density cultivation of Lipomyces starkeyi . WCCE10, 1.-5.10.2017, Barcelona, Spain
• Rahman, S., Arbter, P., Popovic, M., Bajpai, R., Subramanian, R. (2016) Microbial lipid production from lignocellulosic hydrolyzates: effect of carbohydrate mixtures and acid-hydrolysis byproducts on cell growth and lipid production by Lipomyces starkeyi. J Chem Technol Biotechnol. DOI 10.1002/jctb.5185
• Subramaniam, R., Esser, M., Popovic, M., Bader, J., Chistoserdov, A., Bajpai, R. (2015) Effect of C/N Ratio on Enzymatic Activity for Microbial Lipid Production. Conference Proceedings of 2015 AIChE Annual Meeting (ISBN:978-0-8169-1094-6), Sustainable Engineering Forum, (372) Reaction Kinetics and Transport Fundamentals for Biomass Conversion I, presentation 372a, November 8-13, 2015, Salt Lake City, USA
• Arbter, P., Popovic, M., Subramaniam, R., Rahman, S., Bajpai, R., (2015) Utilization of Pentoses and Hexoses by Lipomyces starkeyi. Chemical Engineering and Biochemical Engineering for a new sustainable process industry in Europe, Abstract Book, p.962, ECCE10+ECAB3+EPIC5, September 27th – October 1st, Nice, France
• Bader, J., Brigham, C., Popovic, M.K. (2015) Influence of CO2 on microbial fermentation processes. in Biotechnology, [Eds.Horst W.Doelle, Stefan Rokem, Marin Berovic], in Encyclopedia of Life Support Systems(EOLSS), Developed under the Auspices ofthe UNESCO, Eolss Publishers, Paris, France, [http://www.eolss.net]
• Franz Huschner, Estelle Grousseau, Christopher J. Brigham, Jens Plassmeier, Milan Popovic, ChoKyun Rha, Antony J. Sinsky (2015) Development of a feeding strategy for high cell and PHA density fed-batch fermentation of Ralstonia eutropha H16 from organic acids and their salts. Process Biochem 50 (2): 165-172, dx.doi.org/10.1016/j.procbio.2014.12.004
• Grunwald, S., Mottet, A., Grousseau, E., Plassmeier, J. K., Popović, M. K., Uribelarrea, J.-L., Gorret, N., Guillouet, S. E., Sinskey A. (2014) Kinetic and stoichiometric characterization of organoautotrophic growth of Ralstonia eutropha on formic acid in fed-batch and continuous cultures. Microbial Biotechnology, DOI:10.1111/1751-7915.12149
• Popović, M.K., Senz, M., Bader, J., Skelac, L., Schilf, W., Bajpai, R. (2014) Positive effect of reduced aeration rate on secretion of alpha-amylase and neutral proteases during pressurized fermentation of thermophilic Bacillus caldolyticus. New Biotechnology 31 (2): 141-149
• Arbter, P., Subramaniam, R., Rahman, S., Dufreche, S., Zappi, M., Popović, M.1, Bajpai, R. (2013) Microbial Lipids from Simulated Lignocellulose Hydrolysates. Proceedings of Mid-South Annual Engineering and Sciences Conference, MAESC 2013, SESSION 4 Chemical Engineering I, MAESC 1077, Oxford MS, USA, Oct. 28-29, 2013
• Bader, J., Skelac, L., Wewetzer, S., Senz, M., Popović, M.K., Bajpai, R. (2012) Effect of CO2 partial pressure on the production of thermostable alpha-amylase and neutral protease by Bacillus caldolyticus. Applied Biochemistry and Microbiology, 48, (2): 182-187
• Hageböck, M., Schütt, D., Popović, M.K., Stahl, U., Garbe, L.A., Bader, J. (2012) Identification of metabolization of orally consumed products in a simulated digestion model. New Biotechnology 29, S184, DOI: 10.1016/j.nbt.2012.08.514
• Menschel, S., Bader, J., Popović, M.K. (2012) Comparative study of heat induced fusion protein fermentation in stirred tank, bubble column and air-lift bioreactors. Book of Abstracts, 9th European Symposium on Biochemical Engineering Science, Istanbul,Turkey
• Jamrath, T., Lindner, C., Popović, M.K., Bajpai, R. (2012) Production of Amylases and Proteases by Bacillus caldolyticus from Food Industrial Wastes. Food Technology and Biotechnology. 50 (3): 355-361
• Bader, J., Popović, M.K., Stahl, U. (2012) Processing, consumption and effects of probiotic microorganisms. in Biotechnology, [Eds. Doelle, H.W., Rokem, S., Berovic, M.], in Encyclopedia of Life Support Systems(EOLSS), Developed under the Auspices of the UNESCO, Eolss Publishers, Oxford, UK, [http://www.eolss.net]
• Popović, M.K., Pörtner, R. (2012) Bioreactors and cultivation systems for cell and tissue culture. Encyclopedia of Life Support Systems. in Biotechnology, [Eds. Doelle, H.W., Rokem, S., Berovic, M.], in Encyclopedia of Life Support Systems(EOLSS), Developed under the Auspices of the UNESCO, Eolss Publishers, Oxford, UK, [http://www.eolss.net]
• Budde, C.F., Riedel, S.L., Hübner, F., Risch, S., Popovic, M.K., Rha, CK., Sinskey, A.J. (2011) Growth and polyhydroxybutyrate production by Ralsonia eutropha in emulsified plant oil medium. Applied Microbiology and Biotechnology. 89: 1611-1619
• Popovic, M.K., Subramaniam, R. Dufreche, S., Zappi, M., Bajpai, R. (2011) Effect of Nutrients on Production of Lipids by Lipomyces starkeyi and its Economics, Book of Abstracts, 1st European Congress of Applied Biotechnology, Berlin, Germany
• Skelac, L., Wewetzer, S., Bader, J., Popović, M.K. (2010) Batch and chemostat cultivation for production of thermostable hydrolases: protease and alpha-amylase. Book of Abstracts, 8th European Symposium on Biochemical Engineering Science, Bologna, Italy
• Wild, R., Patil, S., Popovic, M.K., Zappi. M., Dufreche, S., Bajpai, R. (2010) Lipids from Lipomyces starkeyi, Food Technology and Biotechnology 48 (3): 329-335
• Bader, J., Mast-Gerlach, E., Popovic, M.K., Bajpai, R., Stahl, U. (2009) Relevance of coculture fermentations in biotechnology. Journal of Applied Microbiology 109 (2): 371-387
• Skelac, L., Wewetzer, S., Bader, J., Karschöldgen, A., Popović, M.K. (2009) Reliability of optical dissolved CO2 measurements in fermentation medium during the production of thermostable alpha-amylase and protease by B. caldolyticus. BioProScale Symposium "Inhomogenities in large-scale bioreactors", IfGB, TU Berlin, 24-27 November 2009, Berlin
• Popović, M.K., Jamrath, T., Lindner, C. (2009) Production of thermostable alpha-amylase using food industry wastes. New Biotechnology, 25S1: S206, doi:10.1016/j.nbt.2009.06.147
• Lindner, C., Bernhardt, U., Jamrath, T., Popović, M.K. (2009). Gewinnung von thermostabilen Hydrolasen durch die Kultivierung von Bacilluscaldolyticus auf Abfällen der Lebensmittelindustrie. ExzellenzTandem, Wissenstransfer im Dialog III, ISBN 978-3-938576-24-3 : 81-86
• Popović, M.K., Senz, M., Bader, J. (2009) Effect of an elevated carbon dioxide partial pressure on the production of thermostable alpha-amylase and protease from Bacillus caldolyticus. New Biotechnology, 25S1: S193, doi:10.1016/j.nbt.2009.06.117
• Schwab, K., Bader, J., Brokamp, C., Popović, M.K., Bajpai, R., Berovic, M. (2009) Dual feeding strategy for the production of alpha-amylase by Bacillus caldolyticus using complex media. New Biotechnology 26 (1-2): 68-74
• Senz, M., Popovic, M.K. Einfluss eines erhöhten Kohlendioxidpartialdrucks auf die Ausbeute thermostabiler α-Amylase und Protease aus Bacillus caldolyticus. Forschungsbericht 2008/2009. ISBN: 978-3-938576-20-5, 122-124
• Bader, J., Brokamp, C., Popović, M.K. (2009) Feeding strategies for fermentation of thermostable alpha-amylase: A comparison. Book of Abstracts, 29th International Exhibition- Congress on Chemical Engineering, ACHEMA 2009, DECHEMA e.V., Frankfurt Germany
• Wild, R., Popović, M.K., Bajpai, R. (2009) Lipids from Lipomyces starkeyi – Production and Characterization, Book of Summaries: 46, 9th Yeast Lipid Conference, May 21 – 23, 2009, Berlin, Germany
• Siewek, M., Jamrath, T., Menschel, S., Popović, M.K. (2008) Thermostable alpha-Amylase: Comparability studies of different chemical assays. Book of Abstracts European Bioperspectives, Hannover, Germany, October, 2008: 243
• Siewek, M., Jamrath, T., Popović, M.K., Bernhardt., U. (2008) Verwertung von Abfällen aus der Lebensmittelindustrie für die Gewinnung von Industrieenzymen. ExzellenzTandem, Wissenstransfer im Dialog II, ISBN 978-3-938576-19-9: 27-32
• Kolbe, M., Ozar, Y., Popovic, M., Höling, A. (2008) Verwendung von Industrieabfällen für die technischen Enzymen am Beispiel von Proteinhydrolysat tierischer Herkunft für die Gewinnung von thermostabilen alpha-Amylasen, ExzellenzTandem, Wissenstransfer im Dialog, 47-52, ISBN 978-3-9938576-10-6
• Jamrath, T., Senz, M., Menschel, S., Kolbe, M., Popović, M.K. (2008) Microbial synthesis of alpha-amylase using elevated pressure. Book of Abstracts, ESBES 7, Faro, Portugal: 136
• Schwab, K., Brokamp, C., Weigel, C., Popovic, M.K. (2007) Production and characterization of α-amylase. Journal of Biotechnology, 131 (2S), doi:10.1016/j.jbiotec.2007.07.831
• Herrmann, S., Popović, M.K., Paca, J., Halecky, M., Bajpai, R. (2007) Mineralization and Uptake of TNT by microorganisms: effect of pretreatment with alkali. Central European Journal of Energetic Materials, 4 (4): 45-58
• Scheler, Ch., Neumann, B., Lehmann, K., Altvater, J., Weise, S., Taufmann, M., Senz, M., Otto, U., Popovic, M. Deutung von Fermentationsprozessen durch Proteomanalyse. Forschungsbericht 2007 ISBN:978-3-938576-07-3, 138-142
• Popović, M.K., Wulfes, C., Bajpai, R. (2007) Drift Flux Distribution parameter in three-phase air-lift reactors. Chemical and Biochemical Engineering Quarterly 21 (4): 435-437
• Bader, J., Schwab, K., Popović, M.K., Bajpai, R., Neumann, B. (2007) Application of pH and pO2 probes during Bacillus caldolyticus fermentation: An additional approach for improving a feeding strategy. Chemical and Biochemical Engineering Quarterly 21 (4): 315-320
• Senz M., Popovic, M., (2006/2007) Einfluß von erhöhten Sauerstoffeintrag bei der Gewinnung thermostabiler alpha-Amylase und Protease mittels Bacillus caldolyticus. Forschungsassistenz IV, ISBN 978-3-938576-11-3
• Schlötelburg, C., Popovic, M. (2006) Systemminiaturisierung in der Bioprozesstechnik: Scale-Down anstatt Scale-Up. Forschungsbericht, ISBN: 3-938576-07-3, 79-81
• Schwab, K., Popovic, M. (2006) Ermittlung von Fermentationsparametern in Schüttelkolbenkulturen. Forschungsbericht, ISBN 3-938576-07-3: 82-83
• Schwab, K., Brokamp, C., Neumann, B., Popović, M.K. (2006) Dual feeding strategy for the production of alpha-amylase by Bacillus caldolyticus. Book of Abstracts, ESBES 6: 135, 27-30 August, Salzburg, Austria
• Brokamp, C., Weigel, C., Jamrath, T., Popovic, M.K. (2006) Einfluss der Sporulation auf die Produktion einer thermostabilen alpha-Amylase in Bacillus caldolyticus. Chemie Ingenieur Technik 78(9): 1394
• Bader, J., Neumann, J., Schwab, K., Popović, M.K., Scheler, C., Bajpai, R. (2006) alpha-Amylase Production in Fed Batch Cultivation of Bacillus caldolyticus: An Interpretation of Fermentation Course Using 2-D Gel Electrophoresis. Chemical and Biochemical Engineering Quarterly 20 (4): 413–420
• Brokamp, C., Popovic, M., (2005/2006) Einfluss der Sporulation auf die Produktion einer alpha-Amylase mittels des thermophilen Bacillus caldolyticus und Untersuchung der Enzymstabilität, Forschungsassistenz III, ISBN 3-938576-05-7 :51-53
• Weigel, Ch., Popovic, M., Omics in der Bioprozestechnik: Mode oder Trend. Forschungsbericht 2005 ISBN:3-938576-04-9, 101-103
• Bader, J., Neumann, B., Schwab, K., Popović, M.K., Scheler, C., Bajpai, R (2005) Preliminary investigation: Development of a two component feeding strategy with the help of proteome analysis. Journal of Biotechnology 118S1: 27
• Bader, J., Neumann, B., Schwab, K., Popović, M.K., Bajpai, R. (2005) Application of pH and pO2 probes during Bacillus caldolyticus fermentation: An additional approach in improving a feeding strategy. Journal of Biotechnology 118S1: 62
• Bader, J., Neumann, B., Schwab, K., Popović, M.K., Scheler, C., Bajpai, R. (2005) alpha-amylase production in fed-batch cultivation of Bacillus caldolyticus. Chemie Ingenieur Technik 77 (8): 1199-1200
• Bader, J., Popovic M. (2004/2005) Monitoring of a Bacillus caldolyticus fermentation - improved feeding control by using pH and pO2 probe signals, Nachwuchsforscherinnen und Nachwuchsforscher an der TFH Berlin (Forschungsassistenz II), ISBN 3-938576-00-6 :56-59
• Bajpai, R., Parekh, D., Herrmann S., Popovic, M., Paca, J, Qasim, M. (2004) A kinetic model of aqueous-phase alkali hydrolysis of 2,4,6-trinitrotoluene. Journal of Hazardous Materials. 106B: 55-66
• Popovic, Milan K., Kiefner, Andreas W., Bajpai, Rakesh (2004) Gas Hold-up and Liquid Circulation Velocity in Gas-Lquid-Solid Airlift Reactors. The Canadian Journal of Chemical Engineering, Vol. 82: 1273-1274
• Neumann, B., Scheler, C., Popovic, M., (2004) 2D-Gel elektrophoresis as useful tool for analysis of glucose limited fermentation of E. Coli. Book of abstracts, 36-37,12th international biotechnology symposium and exhibition, Biotechnology 2004, Santiago, Chile, www.conicyt.cl/IBS2004
• Hermann, S., Popovic, M., Paca, J., Bajpai, R., (2004) Mineralization and uptake of TNT by microorganisms: Effect of pretratment with alkali. Book of abstract, 169,12th international biotechnology symposium and exhibition, Biotechnology 2004, Santiago, Chile, www.conicyt.cl/IBS2004
• Popovic, M, Scheler, C., Neumann, B., (2004) Einsatz von 2D-Gelelektrophorese zum besseren Verständniss der Vorgänge während einer rekombinanten Hochzelldichte-Kultivierung. Chemie Ingenieur Technik 76(9):1252
• Popovic, M., Kim, J., Bajpai, R., A Mathematical Analysis of Migration of Microorganisms in packed Beds. Forschung für die Praxis, Forschungsbericht 2003/2004, 72-73, Herausgeber Thümer, R./ Präsident der TFH Berlin
• Kukuck, H., Popovic, M., Scheler, C., (2003/2004) Verfahren und Methoden zur Gewinnung, Isolierung und Identifikation von „low abundance“ Proteinen in Mikroorganismen, Forschungsassistenzen 2003/2004 (I), ISBN 3-9809581-5-9, 27-30
• Neumann, B., Scheler, Ch., Popovic, M. Produktion von Aprotinin auf fermentationstechnischem Wege. Forschung für die Praxis, Forschunsbericht 2003/2004, 67-68, Herausgeber Thümer, R./ Präsident der TFH Berlin
• Bajpai, R., Kim, J., Popovic, M., A mathematical analysis of migration of microorganisms in packed beds.Abstracts,126-127, 11th European Congress on Biotechnology, 24-29 August, 2003, Basel, Switzerland
• Popovic, M.K. (2003) University of Applied Sciences, Application-Oriented University Education and Research. Henry E. Bent Distinguished Lecture Series, The University of Missouri-Columbia, Columbia, MO, USA
• Popovic,M.K. (2003) Migration of Microorganisms in Contaminated Soil, Department of Chemical Engineering and Applied Chemistry, University of Toronto, Ontario, Canada
• Popovic, M.K. (2003) Migration of Microorganisms in Contaminated Soil, In Food Science&Engineering Unit, University of Missouri-Columbia, Columbia, MO, USA
• Popovic, M., Kim, J., Bajpai, R. (2003) Analysis of Microorganisms' Migration in packed Beds: Practical Approach. Book of Abstracts, 238-241, 6th Japanese/German Symposium on Bubble Column, Nara, Japan
• Bajpai, R., Parekh, D., Hermann, S., Popovic, M., Paca, J.(2002) An Engineering Analysis of Alkali Hydrolysis of 2,4,6-Trinitrotoluene. Summaries, K1.5, 97, CHISA 2002, 15th International Congress of Chemical and Process Engineering, 25-29 August, Praha, Czech Republic
• Bajpai, R., Qasim, M., Hansen, L., Popovic, M., Paca, J.(2002) Chemical and Biological Reactions of TNT and RDX. Summaries, K1.3, 95, CHISA 2002, 15th International Congress of Chemical and Process Engineering, 25-29 August, Praha, Czech Republic
• Bajpai, R., Kim, J., Popovic, M. (2002) A Mathematical Analysis of Migration of Microorganisms in Packed Bed, Program and Abstracts of 24th Symposium on Biotechnology for Fuels and Chemicals,Gatlinburg, Tennessee, USA, April 28 – May 1: 165
• Karasch, C., Popovic, M., Qasim, M., Bajpai, K.R. (2002) Alkali Hydrolsis of Trinitrotoluene, Applied Biochemistry and Biotechnology, Vols. 98-100: 1173-1185
• Popovic, M.K., Liu, W.M., Iannotti, E.L., Bajpai, R.K. (2001), A Mathematical Model for Vegetative Growth of Bacillus thuringiensis, Chemical Engineering and Technology/Engineering in Life Sciences, Vol. 24. No. 8: 85-90
• Berovic, M., Popovic, M. (2001), Characterisationj of Gas Mixed Bioreactors in Submerged Citric Acid Fermentation, Chemical and Biochemical Engineering Quarterly, Vol.15 (2): 33-36
• Berovic, M., Popovic, M. (2001), Influence of Bioreactor Design on Citric Acid Formation: Citric Acid Production in Gas Mixed Bioreactors, Preprints of the conference „Biotechnology and Environment“, Zagreb, Croatia, February 19-22, 173-179
• Yan, J., Bajpai, R., Iannotti, G., Popovic, M., Mueller, R. (2001) Lactic Acid Fermentation From Enzyme-Thinned Starch With Immobilized Lactobacillus amylovorus. Chemical and Biochemical Engineering Quarterly, Vol.15(2): 59-63
• Karasch, C., Popovic, M., Qasim, M., Bajpai, R. (2001) Alkali Hydrolysis of 2,4,6-Trinitrotoluene at Different Solution pH. Final Programme and Abstract Book, ENV-41, 131, 10th European Congress on Biotechnology, 8-11 July, Madrid, Spain
• Karasch, C., Popovic, M., Qasim, M., Bajapai, R., (2001) Alkali Hydrolysis of Trinitrotoluene. Program and Abstracts,Poster 5-17, 23rd Symposium on Biotechnology for Fuels and Chemicals, May 6-9, Beaverr Run Resort Breckenridge, Colorado, USA
• Hiller, O., Popovic, M., Ianotti, E., Bajpai, R.(2000) Migration of Leuconostoc mesenteroides cells in sand beds. Preprints of 238th ACS National Meeting, Enviromental Division, Civil and Environmental Engineering, October 27, Atlanta, GA, USA
• Popovic, M.K., Liu, W.-M., Ianotti, E.L., Bajpai, R.(2000) A Mathematical Model For Vegetative Growth Of Bacillus Thuringiensis. Book of Abstracts 204-206, BIOTECHNOLOGY 2000, 11th International Biotechnology Symposium and Exhibition, 3-8 September, Berlin, Germany
• Kiefner, A., Wulfes, C., Sohn, P. U.-N., Bajpai, R., Popovic, M. (2000) Hydrodynamics in Three-Phase Bioreactors, Preprints 210-216, 5th German-Japanese Symposium BUBBLE COLUMNS, May 28-30, Dresden, Germany
• Popovic, M., Bajpai, R. Hydrodynamics in Three-Phase Bioreactors, Forschungsbericht aktuell der TFH Berlin, 2000, 88-90, Herausgeber Ackermann, G./ Präsident der TFH Berlin