Production of rhamnolipids by Pseudomonas chlororaphis, a nonpathogenic bacterium

Article Abstract:

A strain of the nonpathogenic bacterial species Pseudomonas chlororaphis that is capable of naturally producing rhamnolipids is identified using a phenotypic assay for rhamnolipid production. The rhamnolipid produced by Pseudomonas chlororaphis appear to be exclusively the mono-rhamnolipid form.

Author: Gunther, Nereus W., IV, Nunez, Alberto, Fett, William, Solaiman, Daniel K.Y.
Science & research, Lipids, Company growth

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Urea hydrogen peroxide reduces the numbers of Lactobacilli, nourishes yeast, and leaves no residues in the ethanol fermentation

Article Abstract:

Results demonstrate that the growth of five Lactobacilli species in a wheat mash is affected by urea hydrogen peroxide (UHP) in the presence of yeast. Data show that Lactobacilli growth can be contained by UHP at 30 millimole per liter of mash to favor vigorous fermentation by the yeast.

Author: Narendranath, N.V., Thomas, K.C., Ingledew, W.M.
Canada, Lactobacillus, Microbial metabolism, Fermentation, Urea

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Hydrogen peroxide sensitivity of catechol-2,3-dioxygenase: a cautionary note on use of xylE reporter fusions under aerobic conditions

Article Abstract:

Results demonstrate that Pseudomonas aeruginosa mutants carrying xylE fusion plasmids loose greater than 95% catechol-2,3-dioxygenase on exposure to hydrogen peroxide. Data indicate that enzyme activity loss is due to the oxidation of the active-site ferrous-ion.

Author: Ochsner, Urs A., Hassett, Daniel J., Groce, Stephanie L., Parvatiyar, Kislay, Ma, Ju-Fang, Lipscomb, John D.
Analysis, Oxidation, Physiological, Physiological oxidation, Catecholamine metabolism

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Subjects list: Research, United States, Usage, Growth, Pseudomonas, Statistical Data Included, Physiological aspects, Hydrogen peroxide
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