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Enrichment of acetate-, propionate-, and butyrate-degrading co-cultures from the biofilm of an anaerobic fluidized bed reactor


Scanning electron microphotographs from the biofilm of a pilot scale anaerobic fluid-ized-bed reactor fed with acetate, propionate, and butyrate as carbon sources showed a predominance of filamentous organisms resembling Methanothrix sp. which could be isolated as an al-most pure culture as well as a Methanosarcina strain. Three syntrophic cultures, enriched in the medium of Boone and Xun, contained four or five microscopically distinguishable microorganisms, among them Methanospirillum sp., Methanothrix sp., Methanosarcina sp., and rods of acetogenic bacteria degrading propionate or butyrate effectively.

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Correspondence to Regina Wollersheim.

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Wollersheim, R., Selz, A., Heppner, B. et al. Enrichment of acetate-, propionate-, and butyrate-degrading co-cultures from the biofilm of an anaerobic fluidized bed reactor. Appl Microbiol Biotechnol 31, 425–429 (1989).

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  • Propionate
  • Butyrate
  • Pure Culture
  • Pilot Scale
  • Methanosarcina