Pathways of propionate degradation by enriched methanogenic cultures.
- Koch M Swiss Federal Institute of Technology, Zürich, and Federal Institute for Water Resources and Water Pollution Control, CH-8600 Dubendorf, Switzerland.
- Dolfing J
- Wuhrmann K
- Zehnder AJ
- 1983-04-01
Published in:
- Applied and environmental microbiology. - 1983
English
A mixed methanogenic culture was highly enriched in a growth medium containing propionate as the sole organic carbon and energy source. With this culture, the pathways of propionate degradation were studied by use of C-radiotracers. Propionate was first metabolized to acetate, carbon dioxide, and hydrogen by nonmethanogenic organisms. Formate was not excreted. The carbon dioxide originated exclusively from the carboxyl group of propionate, whereas both [2-C]- and [3-C]propionate lead to the production of radioactive acetate. The methyl and carboxyl groups of the acetate produced were equally labeled, regardless of whether [2-C]- or [3-C]propionate was used. These observations suggest that in the culture, propionate was degraded through a randomizing pathway.
- Language
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- English
- Open access status
- bronze
- Identifiers
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- DOI 10.1128/AEM.45.4.1411-1414.1983
- PMID 16346281
- Persistent URL
- https://sonar.ch/global/documents/185504
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