Effect of yeast extract and vitamin B12 on ethanol production from celluloseby Clostridium thermocellum I-1-B
Article Abstract:
Ethanol production by the anaerobic bacterium Clostridium thermocellum I-1-B is affected by the addition of yeast extract; a vitamin mixture containing vitamin B12, biotin, pyridoxamine and para-aminobenzoic acid; or vitamin B12 alone. This was shown by this study conducted to determine the effects of an enhanced media in relation to the fermentation products that could be obtained from cellulose by the action of this Clostridium strain from Japan. Ethanol production was enhanced by the yeast extract as determined by gas chromatography. Similar effects were also observed with the vitamin mixture and with vitamin B12 alone. Other Clostridiumstrains tested were likewise able to produce ethanol but accompanying production of organic acids was observed.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Characterization of ethanol production from xylose and xylitol by a cell-free Pachysolen tannophilus system
Article Abstract:
A cell-free system that converted xylose into xylitol, ethanol and carbon dioxide by using whole cells and a cell extract of Pachysolen tannophilus is discussed. The electron source was identified by the determination of the effect of fluorocitrate on xylitol production. Breakage ofthe mitochondria during sample preparation and the release of their contents assoluble enzymes were indicated by the the enzyme determinations in the various cell fractions.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
Moderate concentrations of ethanol inhibit endocytosis of the yeast maltose transporter
Article Abstract:
A study was conducted on the endocytosis inhibition in Saccharomyces cerevisiae maltose transporter. Catabolyte inactivation was found to be degraded by moderate amounts of ehtanol. Results show that endocytosis-caused inhibition of transporter internalization promotes the inactivation. Results also reveal that the modifications produced by ethanol in plasma membrane organization cause the inhibition.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Effect of pH and monensin on glucose transport by Fibrobacter succinogenes, a cellulolytic ruminal bacterium. Metabolism of phosphonoacetate as the sole carbon and phosphorus source by an environmental bacterial isolate
- Abstracts: The effect of constraint on the rate of evolution in neutral models with biased mutation. Reply to Richard R. Hudson
- Abstracts: Rates and patterns of base change in the small subunit ribosomal RNA gene. A novel mitochondrial genome organization for the blue mussel, Mytilus edulis
- Abstracts: Production of an extracellular polyethylene-degrading enzyme(s) by Streptomyces species. Characterization of an extracellular protease inhibitor of Bacillus brevis HPD31 and nucleotide sequence of the corresponding gene
- Abstracts: Fluorometric detection of a Bacillus stearothermophilus spore-bound enzyme, alpha-D-glucosidase, for rapid indication of flash sterilization failure