| Production of Skatole and para-Cresol by a Rumen Lactobacillus sp. | |
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MedLine Citation:
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PMID: 16345702 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The objective of this study was to examine the substrate specificity of several ruminal strains of a Lactobacillus sp. which previously was shown to produce skatole (3-methylindole) by the decarboxylation of indoleacetic acid. A total of 13 compounds were tested for decarboxylase activity. The Lactobacillus strains produced p-cresol (4-methylphenol) by the decarboxylation of p-hydroxyphenylacetic acid, but did not produce either o-cresol or m-cresol from the corresponding hydroxyphenylacetic acid isomers. These strains also decarboxylated 5-hydroxyindoleacetic acid to 5-hydroxyskatole and 3,4-dihydroxyphenylacetic acid to methylcatechol. Skatole and p-cresol were produced in a 0.5:1 ratio, when indoleacetic acid and p-hydroxyphenylacetic acid were combined in equimolar concentrations. Competition studies with indoleacetic acid and p-hydroxyphenylacetic acid suggested that two different decarboxylating enzymes are involved in the production of skatole and p-cresol by these strains. This is the first demonstration of both skatole production and p-cresol production by a single bacterium. |
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Authors:
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M T Yokoyama; J R Carlson |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Applied and environmental microbiology Volume: 41 ISSN: 0099-2240 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 1981 Jan |
Date Detail:
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Created Date: 2010-06-25 Completed Date: 2010-06-25 Revised Date: 2010-09-20 |
Medline Journal Info:
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Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: United States |
Other Details:
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Languages: eng Pagination: 71-6 Citation Subset: - |
Affiliation:
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Agricultural Fermentation and Nutrition Laboratory, Department of Animal Sciences, Michigan State University, East Lansing, Michigan 48824. |
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