Fermentative degradation of monohydroxybenzoates by defined syntrophic cocultures


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TSCHECH, Andreas, Bernhard SCHINK, 1986. Fermentative degradation of monohydroxybenzoates by defined syntrophic cocultures. In: Archives of Microbiology. 145(4), pp. 396-402. ISSN 0302-8933. eISSN 1432-072X. Available under: doi: 10.1007/BF00470878

@article{Tschech1986Ferme-7333, title={Fermentative degradation of monohydroxybenzoates by defined syntrophic cocultures}, year={1986}, doi={10.1007/BF00470878}, number={4}, volume={145}, issn={0302-8933}, journal={Archives of Microbiology}, pages={396--402}, author={Tschech, Andreas and Schink, Bernhard} }

Fermentative degradation of monohydroxybenzoates by defined syntrophic cocultures terms-of-use Schink, Bernhard 1986 First publ. in: Archives of Microbiology 145 (1986), pp. 396-402 2011-03-24T17:33:37Z Tschech, Andreas 2011-03-24T17:33:37Z From anaerobic freshwater enrichment cultures with 3-hydroxybenzoate as sole substrate, a slightly curved rod-shaped bacterium was isolated in coculture with Desulfovibrio vulgar& as hydrogen scavenger. The new isolate degraded only 3-hydroxybenzoate or benzoate, and depended on syntrophic cooperation with a hydrogenoxidizing methanogen or sulfate reducer. 3-Hydroxybenzoate was degraded via reductive dehydroxylation to benzoate. With 2-hydroxybenzoate (salicylate), short coccoid rods were enriched from anaerobic freshwater mud samples, and were isolated in defined coculture with D. vulgaris, This isolate also fermented 3-hydroxybenzoate or benzoate in obligate syntrophy with a hydrogen-oxidizing anaerobe. The new isolates were both Gram-negative, non-sporeforming strict anaerobes. They fermented hydroxybenzoate or benzoate to acetate, CO2, and, presumably, hydrogen which was oxidized by the syntrophic partner organism. With hydroxybenzoates, but not with benzoate, Acetobacterium woodii could also serve as syntrophic partner. Other substrates such as sugars, alcohols, fatty or amino acids were not fermented. External electron acceptors such as sulfate, sulfite, nitrate, or fumarate were not reduced. In enrichment cultures with 4-hydroxybenzoate, decarboxylation to phenol was the initial step in degradation which finally led to acetate, methane and CO2. eng Schink, Bernhard application/pdf Tschech, Andreas

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