Ethanol production by a self-aggregating mutant of Saccharomyces uvarum

Conference · Sun Jan 01 04:00:00 EST 1984 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:6191940

Gong, C S; Chen, L F

A stable self-aggregating yeast mutant, Saccharomyces uvarum SU4, was isolated from an ethanol-tolerant, osmotolerant, flocculent yeast, S. uvarum ATCC 26602. This mutant grows exclusively in a spherical aggregate form in liquid medium. It retains the ability of the parent strain to ferment high concentrations of glucose (29% (w/v)) with a high ethanol productivity and yield. In a column fermentor, SU4 also formed aggregates and exhibited an ethanol productivity of 28 g/l.h at a dilution rate of 0.7.h. A final ethanol concentration of 112 g/l was obtained from 230 g/l glucose feed at a dilution rate of 0.12.h. No significant cell washout was observed under experimental conditions. The aggregates in the column fermentor are stable over several months of continuous operation.

• Research Organization: Purdue Univ., West Lafayette, IN
• OSTI ID: 6191940
• Report Number(s): CONF-840509-
• Conference Information: Journal Name: Biotechnol. Bioeng. Symp.; (United States) Journal Volume: 16:14
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
ALCOHOLS
ALDEHYDES
BIOCONVERSION
BIOSYNTHESIS
CARBOHYDRATES
CONTINUOUS CULTURE
CULTURE MEDIA
ETHANOL
FERMENTATION
FUNGI
GLUCOSE
HEXOSES
HYDROXY COMPOUNDS
MICROORGANISMS
MONOSACCHARIDES
MUTANTS
ORGANIC COMPOUNDS
PERFORMANCE
PLANTS
PRODUCTIVITY
SACCHARIDES
SACCHAROMYCES
STABILITY
SYNTHESIS
YEASTS