Cellulose fermentation by a coculture of a mesophilic cellulolytic Clostridium and Clostridium acetobutylicum
A coculture of a mesophilic cellulolytic Clostridium with Clostridium acetobutylicum can yield a direct conversion of cellulose into chemicals. In 13 days 30 g/l Solka Floc is degraded and fermented into 14 g/l butyric acid, 4 g/l acetic acid, 3 g/l ethanol, and 1 g/l butanol. A four times higher rate of cellulose hydrolysis than in pure culture of the cellulolytic Clostridium is thus obtained. Fed-batch fermentations of C. acetobutylicum at different glucose feeding rate show that solvents are only produced at a sufficient high rate of glucose supply to the medium. Acids are thus the main products of the coculture because of the limited rate of cellulolysis by the mesophilic strain. 7 references, 5 figures.
- Research Organization:
- Institut National Polytechnique de Lorraine, Nancy Cedex, France
- OSTI ID:
- 6838735
- 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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59 BASIC BIOLOGICAL SCIENCES
ACETIC ACID
ALCOHOLS
ALDEHYDES
BACTERIA
BATCH CULTURE
BIOCHEMICAL REACTION KINETICS
BIOCONVERSION
BUTANOLS
BUTYRIC ACID
CARBOHYDRATES
CARBOXYLIC ACIDS
CELLULOSE
CHEMICAL REACTIONS
CHROMATOGRAPHY
CLOSTRIDIUM
CLOSTRIDIUM ACETOBUTYLICUM
CULTURE MEDIA
DECOMPOSITION
ETHANOL
FERMENTATION
GAS CHROMATOGRAPHY
GLUCOSE
HEXOSES
HYDROLYSIS
HYDROXY COMPOUNDS
KINETICS
LYSIS
METHANOGENIC BACTERIA
MICROORGANISMS
MONOCARBOXYLIC ACIDS
MONOSACCHARIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
PH VALUE
POLYSACCHARIDES
PRODUCTION
REACTION KINETICS
SACCHARIDES
SEPARATION PROCESSES
SOLVOLYSIS