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Appl. Environ. Microbiol., Jul 1995, 2765-2767, Vol 61, No. 7
Copyright © 1995, American Society for Microbiology

Interspecies Electron Transfer during Propionate and Butyrate Degradation in Mesophilic, Granular Sludge

JE Schmidt and BK Ahring
The Anaerobic Microbiology/Biotechnology Research Group, Department of Biotechnology, The Technical University of Denmark, DK-2800 Lyngby, Denmark

Granules from a mesophilic upflow anaerobic sludge blanket reactor were disintegrated, and bacteria utilizing only hydrogen or formate or both hydrogen and formate were added to investigate the role of interspecies electron transfer during degradation of propionate and butyrate. The data indicate that the major electron transfer occurred via interspecies hydrogen transfer, while interspecies formate transfer may not be essential for interspecies electron transfer in this system during degradation of propionate and butyrate.


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  • Voolapalli, R. K., Stuckey, D. C. (1999). Relative Importance of Trophic Group Concentrations during Anaerobic Degradation of Volatile Fatty Acids. Appl. Environ. Microbiol. 65: 5009-5016 [Abstract] [Full Text]  


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