Xylose fermentation to ethanol by Pachysolen tannophilus

Conference · Fri Dec 31 23:00:00 EST 1982 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:6925554

Schvester, P; Robinson, C W; Moo-Young, M

Results of batch studies on the bioconversion of D-xylose by the pentose-fermenting yeast Pachysolen tannophilus are reported. A significant level of aeration was found to be necessary to stimulate biomass growth and to enhance the rate of ethanol production. Ethanol production appears to be restricted by substrate inhibition at initial D-xylose concentrations in excess of about 40 g/l. At this value, a maximum ethanol yield from substrate of only 27.4 mass % was achieved, which was only 53.7% of the theoretical maximum. Significant amounts (up to 14% mass yield) of by-product xylitol also were produced. The advantages and disadvantages of this direct bioconversion process for industrial application are discussed and compared to other ethanol production processes. 15 references, 10 figures, 4 tables.

• Research Organization: Univ. of Waterloo, Ontario
• OSTI ID: 6925554
• Report Number(s): CONF-830567-
• Journal Information: Biotechnol. Bioeng. Symp.; (United States), Journal Name: Biotechnol. Bioeng. Symp.; (United States) Vol. 13; ISSN BIBSB
• Country of Publication: United States
• Language: English

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AERATION
ALCOHOLS
ALDEHYDES
BATCH CULTURE
BIOCHEMICAL REACTION KINETICS
BIOCONVERSION
BY-PRODUCTS
CARBOHYDRATES
CHROMATOGRAPHY
ETHANOL
FERMENTATION
FUNGI
GROWTH
HYDROXY COMPOUNDS
INHIBITION
KINETICS
MICROORGANISMS
MONOSACCHARIDES
ORGANIC COMPOUNDS
PENTOSES
PLANTS
PRODUCTION
QUANTITY RATIO
REACTION KINETICS
SACCHARIDES
SEPARATION PROCESSES
XYLOSE
YEASTS