PMID: 9439005Jan 24, 1998Paper

Ethanol production by Saccharomyces cerevisiae in biofilm reactors

Journal of Industrial Microbiology & Biotechnology
Ali DemirciK L Ho

Abstract

Biofilms are natural forms of cell immobilization in which microorganisms attach to solid supports. At ISU, we have developed plastic composite-supports (PCS) (agricultural material (soybean hulls or oat hulls), complex nutrients, and polypropylene) which stimulate biofilm formation and which supply nutrients to the attached microorganisms. Various PCS blends were initially evaluated in repeated-batch culture-tube fermentation with Saccharomyces cerevisiae (ATCC 24859) in low organic nitrogen medium. The selected PCS (40% soybean hull, 5% soybean flour, 5% yeast extract-salt and 50% polypropylene) was then used in continuous and repeated-batch fermentation in various media containing lowered nitrogen content with selected PCS. During continuous fermentation, S. cerevisiae demonstrated two to 10 times higher ethanol production in PCS bioreactors than polypropylene-alone support (PPS) control. S. cerevisiae produced 30 g L-1 ethanol on PCS with ammonium sulfate medium in repeated batch fermentation, whereas PPS-control produced 5 g L-1 ethanol. Overall, increased productivity in low cost medium can be achieved beyond conventional fermentations using this novel bioreactor design.

Citations

Dec 7, 2005·Applied Microbiology and Biotechnology·Thunyarat Pongtharangkul, Ali Demirci
Nov 26, 2009·Applied Microbiology and Biotechnology·Kuan-Chen ChengJeffrey M Catchmark
May 4, 2010·Applied Microbiology and Biotechnology·Kuan-Chen ChengJeffrey M Catchmark
May 10, 2013·Applied Microbiology and Biotechnology·Duygu Ercan, Ali Demirci
Mar 13, 2010·Journal of Industrial Microbiology & Biotechnology·Kuan-Chen ChengJeffrey M Catchmark
Jul 28, 2009·Journal of Biological Engineering·Kuan-Chen ChengAli Demirci
Oct 27, 2015·International Journal of Molecular Sciences·Gulten Izmirlioglu, Ali Demirci
Dec 15, 2015·Journal of Biotechnology·Jui-Ming LiuKuan-Chen Cheng
Jul 7, 2007·Biotechnology and Bioengineering·Rainer GrossAndreas Schmid
Oct 22, 2009·Biotechnology and Bioengineering·Rainer GrossAndreas Schmid
Dec 3, 2009·Biotechnology and Bioengineering·Srijan AggarwalRaymond M Hozalski
May 31, 2012·Critical Reviews in Biotechnology·Markus BölRainer Krull
Aug 8, 2013·Critical Reviews in Biotechnology·Duygu Ercan, Ali Demirci
Dec 18, 2015·Journal of the Science of Food and Agriculture·Chi-Te LiuKuan-Chen Cheng
Dec 29, 2013·Microbial Ecology·Lizziane Kretli WinkelströterElaine Cristina Pereira De Martinis
Feb 2, 2012·Organic & Biomolecular Chemistry·Cormac D Murphy
Feb 5, 2021·Scientific Reports·Sameeha Syed Abdul RahmanSugumaran Karuppiah
Feb 26, 2021·Applied Microbiology and Biotechnology·Robert ZarnowskiMarcel Lí Del Olmo
Jul 9, 2021·Environmental Science and Pollution Research International·Leonard Owino Kachieng'a, John Onolame Unuofin
May 4, 2000·Journal of Agricultural and Food Chemistry·A Demirci, A L Pometto
May 4, 2000·Journal of Agricultural and Food Chemistry·A DemirciD J Cox
Feb 26, 2000·Journal of Agricultural and Food Chemistry·A Demirci, A L Pometto III
Mar 2, 2006·Journal of Agricultural and Food Chemistry·Mohammad A KhiyamiWilliam J Kennedy

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