Effect of cocultures on the production of butanol by Clostridium sp. [C. butyricum, C. pasteurianum, C. butylicum, and C. acetobutylicum]
One of the problems with the production of butanol by fermentation is that a mixture of other solvents, primarily acetone and ethanol, are also produced. The ratio of butanol to acetone to ethanol is approximately 6:3:1. If the metabolism of the Clostridium can be shifted away from acetone and ethanol, then a higher percentage of the sugar carbon can be converted to butanol. This study examines the effects that cocultures of Clostridium have on the yield of butanol from glucose. C. butyricum and C. pasteurianum produced high concentrations of butyric acid from these sugars. C. butylicum and C. acetobutylicum are capable of utilizing this butyric acid for energy, resulting in butanol production. By using combinations of these strains in coculture a higher initial conversion to butyric acid would be expected followed by a higher overall yield of butanol. This coculture would not be expected to have an increased tolerance for butanol in the fermentation broth. 6 references, 1 figure, 3 tables.
- Research Organization:
- Jet Propulsion Lab., Pasadena, CA
- OSTI ID:
- 6838726
- 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
Similar Records
Cellulose fermentation by a coculture of a mesophilic cellulolytic Clostridium and Clostridium acetobutylicum
Role of chemotaxis in solvent production by Clostridium acetobutylicum
Related Subjects
090222* -- Alcohol Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
550700 -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ACETIC ACID
ACETONE
ALCOHOLS
ALDEHYDES
ALKALINE EARTH METAL COMPOUNDS
BACTERIA
BATCH CULTURE
BIOCONVERSION
BUTANOLS
BUTYRIC ACID
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBOHYDRATES
CARBON COMPOUNDS
CARBONATES
CARBOXYLIC ACIDS
CHROMATOGRAPHY
CLOSTRIDIUM
CLOSTRIDIUM ACETOBUTYLICUM
CLOSTRIDIUM BUTYRICUM
CULTURE MEDIA
DISPERSIONS
ETHANOL
FERMENTATION
GAS CHROMATOGRAPHY
GLUCOSE
HEXOSES
HYDROXY COMPOUNDS
KETONES
METHANOGENIC BACTERIA
MICROORGANISMS
MIXTURES
MONOCARBOXYLIC ACIDS
MONOSACCHARIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PRODUCTION
QUANTITY RATIO
SACCHARIDES
SEPARATION PROCESSES