Effect of zeolite addition on ethanol production from glucose by Saccharomyces bayanus

Zeolite NaY at 5 g dm−3 concentration, was selected to improve the production of ethanol fermentation by Saccharomyces bayanus from high glucose concentration media. The highest ethanol productivity (3·07 g dm−3 h−1) was obtained from a 220 g dm−3 initial glucose concentration, while the highest eth...

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Veröffentlicht in:Journal of chemical technology and biotechnology (1986) 1998-12, Vol.73 (4), p.377-384
Hauptverfasser: Castellar, M.R, Aires-Barros, M.R, Cabral, J.M.S, Iborra, J.L
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Sprache:eng
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Zusammenfassung:Zeolite NaY at 5 g dm−3 concentration, was selected to improve the production of ethanol fermentation by Saccharomyces bayanus from high glucose concentration media. The highest ethanol productivity (3·07 g dm−3 h−1) was obtained from a 220 g dm−3 initial glucose concentration, while the highest ethanol concentration (130 g dm−3) was obtained from a 350 g dm−3 glucose medium. The zeolite is believed to have acted as a pH regulator, maintaining the pH value around 3·7–3·8. Under these conditions cellular viability was preserved and metabolic activity was maintained. Thus all the glucose was consumed, and high ethanol productivity and concentration were obtained. Therefore, the addition of zeolite improved ethanol production from high concentrations of glucose by Saccharomyces bayanus. © 1998 Society of Chemical Industry
ISSN:0268-2575
1097-4660
DOI:10.1002/(SICI)1097-4660(199812)73:4<377::AID-JCTB973>3.0.CO;2-I