Ethanol production from xylose by enzymic isomerization and yeast fermentation

Conference · Thu Jan 01 04:00:00 EST 1981 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:5355752

Chiang, L C; Hsiao, H Y; Ueng, P P; Chen, L F; Tsao, G T

Repetitive enzymic isomerization of xylose followed by yeast fermentation of xylulose, and simultaneous enzymic isomerization and yeast fermentation were proven to be methods capable of converting xylose to ethanol. The fermentation product, ethanol, xylitol, or glycerol, has little inhibitory or deactivation effect on the activity of isomerase. In a comparison of the ability of yeasts to ferment xylulose to ethanol, Schizosaccharomyces pombe was found to be superior to industrial bakers' yeast. Under optimal conditions (pH 6, temperature 30/sup 0/C), a final ethanol concentration of 6.3 wt.% was obtained from simulated hemicellulose hydrolysate using a simultaneous fermentation process. The ethanol yield was over 80% of the theoretical value.

• Research Organization: Purdue Univ., West Lafayette, IN
• OSTI ID: 5355752
• Report Number(s): CONF-810554-
• Conference Information: Journal Name: Biotechnol. Bioeng. Symp.; (United States) Journal Volume: 11
• Country of Publication: United States
• Language: English

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ALCOHOLS
ALDEHYDES
BIOCONVERSION
CARBOHYDRATES
CHEMICAL REACTIONS
ETHANOL
FERMENTATION
FUNGI
GLYCEROL
HYDROXY COMPOUNDS
ISOMERIZATION
MICROORGANISMS
MONOSACCHARIDES
ORGANIC COMPOUNDS
PENTOSES
PLANTS
PRODUCTION
SACCHARIDES
XYLOSE
YEASTS