Fermentation of wheat straw hemicelluloses to ethanol by Pachysolen tannophilus

Conference · Fri Jan 01 00:00:00 EST 1982 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:6010074

Detroy, R W; Cunningham, R L; Herman, A I

Wheat straw (WS) was subjected to autohydrolysis (165/sup 0/C) prior to acid hydrolysis of the xylans to yield liquor xylan solids. The crude xylan hydrolysates were tested as substrates for ethanol production by Pachysolen tannophilus. Ethanol fermentation of crude xylan hydrolysates by P. tannophilus was obtained with either ethanol- or ether-extracted material. Ethanol-extracted liquor solids yielded 10 g/L ethanol from 43 g/L xylose, whereas ether-extracted hydrolysates resulted in 4.3 g/L ethanol from 48 g/L xylose. Alkali pulping of wheat straw yielded a hemicellulose-rich fraction. Xylose was liberated by acid hydrolysis and fermentated by the yeast to produce 8.2 g/L ethanol from 47 g/L xylose in four days. 8 figures, 1 table.

• Research Organization: Dept. of Agriculture, Peoria, IL
• OSTI ID: 6010074
• Report Number(s): CONF-820580-
• Journal Information: Biotechnol. Bioeng. Symp.; (United States), Vol. 12; Conference: 4. symposium on biotechnology in energy production and conservation, Gatlinburg, TN, USA, 11 May 1982
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
ETHANOL
PRODUCTION
HEMICELLULOSE
ACID HYDROLYSIS
XYLANS
FERMENTATION
STRAW
YEASTS
ALCOHOLS
BIOCONVERSION
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
FUNGI
HYDROLYSIS
HYDROXY COMPOUNDS
LYSIS
MICROORGANISMS
ORGANIC COMPOUNDS
PLANTS
POLYSACCHARIDES
SACCHARIDES
SOLVOLYSIS
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