Fermentation pattern of sucrose to ethanol conversions by Zymomonas mobilis

Journal Article · Wed Jul 01 04:00:00 EDT 1981 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260230705· OSTI ID:5034486

Lyness, E; Doelle, H W

General patterns of sucrose fermentation by two strains of Zymomonas mobilis, designated Z7 and Z10, were established using sucrose concentrations from 50 to 200 g/liter. Strain Z7 showed a higher invertase activity than Z10. Strain Z10 showed a reduced specific growth rate at high sucrose concentrations while Z7 was unaffected. High sucrose hydrolyzing activity in strain Z7 lead to glucose accumulation in the medium at high sucrose concentrations. Ethanol production and fermentation time depend on the rate of catabolism of the products of sucrose hydrolysis, glucose and fructose. The metabolic quotients for sucrose utilization, qs, and ethanol production, qp (g/g.hr), are unsuitable for describing sucrose utilization by Zymomonas mobilis as the logarithmic phase of growth precedes the phase of highest substrate utilization (g/liter.hr) and ethanol production (g/liter.hr) in batch culture. (Refs. 10).

• Research Organization: Dept. of Microbiology, Univ. of Queensland, St. Lucia, Qld. 4067, Australia
• OSTI ID: 5034486
• Journal Information: Biotechnol. Bioeng.; (United States), Journal Name: Biotechnol. Bioeng.; (United States) Vol. 23:7; ISSN BIBIA
• Country of Publication: United States
• Language: English

Related Subjects

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59 BASIC BIOLOGICAL SCIENCES
ALCOHOLS
ALDEHYDES
BACTERIA
BIOCONVERSION
BIOSYNTHESIS
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
DISACCHARIDES
ETHANOL
FERMENTATION
FRUCTOSE
GLUCOSE
HEXOSES
HYDROLYSIS
HYDROXY COMPOUNDS
KETONES
KINETICS
LYSIS
MICROORGANISMS
MONOSACCHARIDES
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
REACTION KINETICS
SACCHARIDES
SACCHAROSE
SOLVOLYSIS
SYNTHESIS