Abstract:
:Eleven strains of an undescribed species of Clavispora fermented D-xylose directly to ethanol under aerobic conditions. Strain UWO(PS)83-877-1 was grown in a medium containing 2% D-xylose and 0.5% yeast extract, and the following results were obtained: ethanol yield coefficient (ethanol/D-xylose), 0.29 g g (57.4% of theoretical); cell yield coefficient (dry biomass/D-xylose), 0.25 g g; maximum ethanol concentration, 5.9 g liter; maximum volumetric ethanol productivity, 0.11 g liter h. With initial D-xylose concentrations of 40, 60, and 80 g liter, maximum ethanol concentrations of 8.8, 10.9, and 9.8 g liter were obtained, respectively (57.2, 57.1, and 48.3% of theoretical). Ethanol was found to inhibit the fermentation of D-xylose (K(p) = 0.58 g liter) more than the fermentation of glucose (K(p) = 6.5 g liter). The performance of this yeast compared favorably with that reported for some other D-xylose-fermenting yeasts.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Nigam JN,Margaritis A,Lachance MAdoi
10.1128/AEM.50.4.763-766.1985keywords:
subject
Has Abstractpub_date
1985-10-01 00:00:00pages
763-6issue
4eissn
0099-2240issn
1098-5336journal_volume
50pub_type
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