Fermentation of primary alcohols and diols and pure culture of syntrophically alcohol-oxidizing anaerobes

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1985
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Eichler, Barbara
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Zusammenfassung

Ethanol, propanol, ethylene glycol, 1,2-propanediol, 1,2-butanediol, acetoin, diacetyl, and 2,3-pentanedione were used as substrates for enrichment and isolation of alcohol-oxidizing fermentative bacteria. Diacetyl and 2,3- pentanedione proved to be highly toxic. With the other substrates, various kinds of bacteria could be isolated which were assigned to three different metabolic groups: (i) homoacetogenic bacteria, and (ii) bacteria forming propionate as reduced end product were isolated from freshwater sources; (iii) bacteria disproportionating acetoin and 1,2-diols to acids and primary alcohols were isolated from marine sediments.The latter oxidized primary alcohols to fatty acids in the presence of hydrogen-oxidizing partners. Syntrophically ethanol-oxidizing cocultures enriched with primary alcohols could be separated with 1,2-diols as substrates into an alcohol-oxidizing organism and a hydrogenoxidizing homoacetogen. The pathways of alcohol conversion in the disproportionating isolates were studied in detail. Growth experiments as well as enzymological studies demonstrated that acetoin and 1,2-diols were degraded via acetaldehyde which was also an intermediate in syntrophic oxidation of primary alcohols. The environmental importance of the various metabolic types isolated was assessed by most-probable-number enumerations.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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Anaerobic alcohol degradation, Syntrophic metabolism, Diols, Aldehydes, Acetoin, Homopropionate fermentation, Homoacetogenesis
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ISO 690EICHLER, Barbara, Bernhard SCHINK, 1985. Fermentation of primary alcohols and diols and pure culture of syntrophically alcohol-oxidizing anaerobes. In: Archives of Microbiology. 1985, 143(1), pp. 60-66. ISSN 0302-8933. eISSN 1432-072X. Available under: doi: 10.1007/BF00414769
BibTex
@article{Eichler1985Ferme-6996,
  year={1985},
  doi={10.1007/BF00414769},
  title={Fermentation of primary alcohols and diols and pure culture of syntrophically alcohol-oxidizing anaerobes},
  number={1},
  volume={143},
  issn={0302-8933},
  journal={Archives of Microbiology},
  pages={60--66},
  author={Eichler, Barbara and Schink, Bernhard}
}
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