Affiliation:
1. Institut für Mikrobiologie der Universität Göttingen, D-3400 Göttingen, West Germany
Abstract
Two bacterial strains that grow anaerobically on betaine were isolated from enrichment cultures and identified as strains of
Eubacterium limosum.
In a mineral medium supplemented with yeast extract and Casitone, the doubling time of
E. limosum
strain 11A on betaine was 6 h at 37°C. The molar growth yield amounted to 9 g of dry cell mass per mol. Betaine was fermented in accordance with the following equation: 7 betaine + 2 CO
2
→ 7
N,N
-dimethylglycine + 1.5 acetate + 1.5 butyrate.
E. limosum
also grew on methanol and choline. The former was converted to acetate and butyrate, and the latter was converted to
N,N
-dimethylethanolamine, acetate, and butyrate. The conditions for the quantitative determination of
N,N
-dimethylglycine by capillary tube isotachophoresis have been determined.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Cited by
62 articles.
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