Energetics of syntrophic ethanol oxidation in defined chemostat cocultures: 2. Energy sharing in biomass production

The ethanol-oxidizing, proton-reducing Pelobacter acetylenicus was grown in chemostat cocultures with either Acetobacterium woodii, Methanobacterium bryantii , or Desulfovibrio desulfuricans . Y sub(max) and m sub(e) were determined from the total molar growth yields determined at growth (dilution)...

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Bibliographic Details
Published in:Archives of microbiology 1990-12, Vol.155 (1), p.89-93
Main Authors: Seitz, H. -J., Schink, B., Pfennig, N., Conrad, R.
Format: Article
Language:English
Subjects:
Desulfovibrio desulfuricans
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Summary:The ethanol-oxidizing, proton-reducing Pelobacter acetylenicus was grown in chemostat cocultures with either Acetobacterium woodii, Methanobacterium bryantii , or Desulfovibrio desulfuricans . Y sub(max) and m sub(e) were determined from the total molar growth yields determined at growth (dilution) rates between 0.02 and 0.14 h super(-1). The residual 63-81% of the total available Delta G were shared by the H sub(2) oxidizers which exhibited Y sub(max) values being highest for A. woodii (6.6 g/mol acetate) > D. desulfuricans (3.8 g/mol sulfide) > M. bryantii (2.2 g/mol CH sub(4)).
ISSN:0302-8933
1432-072X
DOI:10.1007/BF00291280