Ethanol production from cellulose by a coculture of Zymomonas mobilis and a clostridium

Journal Article · Sun Jan 01 00:00:00 EST 1984 · Curr. Microbiol.; (United States)

DOI:https://doi.org/10.1007/BF01567337· OSTI ID:5985263

Leschine, S B; Canale-Parola, E

Zymomonas mobilis and a mesophilic cellulolytic clostridium (strain C7) were grown in coculture in a medium containing cellulose as fermentable substrate. The coculture was stable through at least ten serial transfers and produced markedly higher amounts of ethanol than monocultures of the cellulolytic clostridium. Glucose and cellobiose, derived from the breakdown of cellulose, accumulated in strain C7 monocultures, but not in cocultures. The molar ratio of ethanol to acetate was higher in cocultures than in monocultures of strain C7. The cellulolytic clostridium was relatively ethanol-tolerant, inasmuch as it grew and fermented cellulose in media containing up to 7 g of ethanol/100 ml. Cellulase (Avicelase) activity of strain C7 was inhibited by cellobiose, but not by glucose. 18 references, 4 figures, 4 tables.

• Research Organization: Univ. of Massachusetts, Amherst
• DOE Contract Number: AC02-81ER10878
• OSTI ID: 5985263
• Journal Information: Curr. Microbiol.; (United States), Vol. 11
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
CELLULOSE
FERMENTATION
ETHANOL
YIELDS
BACTERIA
CELLULOLYTIC ACTIVITY
CLOSTRIDIUM
EXPERIMENTAL DATA
ALCOHOLS
BIOCONVERSION
CARBOHYDRATES
DATA
ENZYME ACTIVITY
HYDROXY COMPOUNDS
INFORMATION
MICROORGANISMS
NUMERICAL DATA
ORGANIC COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)