Influence of oxygen transfer rate and media composition on fermentation of D-xylose by Pichia stipitis NRRL Y-7124

The optimization of ethanol production by Pichia stipitis NRRL Y-7124 was analysed by ATP balance. Ethanol volumetric productivity was maximal (0.5-0.6 g/l h) only over a narrow range of oxygen transfer rates (3-5 mmol O2/1 h). Trace clement supplements increased ethanol volumetric productivity 20%....

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Bibliographic Details
Published inJournal of industrial microbiology Vol. 7; no. 4; pp. 287 - 292
Main Authors Guebel, D.V, Cordenons, A, Nudel, B.C, Giulietti, A.M
Format Journal Article
LanguageEnglish
Published 01.06.1991
Subjects
biotin
culture media
ethanol
ethanol production
fermentation
lignocellulosic wastes
oxygen transport
Pichia stipitis
productivity
synergism
thiamin
trace elements
xylose
yields
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Summary:The optimization of ethanol production by Pichia stipitis NRRL Y-7124 was analysed by ATP balance. Ethanol volumetric productivity was maximal (0.5-0.6 g/l h) only over a narrow range of oxygen transfer rates (3-5 mmol O2/1 h). Trace clement supplements increased ethanol volumetric productivity 20%. Biotin and thiamine did not significantly affect ethanol yield. Vitamins and trace elements were not synergistic. Organic nitrogen source from yeast extract was used for growth simultaneously to ammonia.
ISSN:0169-4146
DOI:10.1007/BF01577657