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Appl Environ Microbiol, June 1998, p. 2301-2303, Vol. 64, No. 6
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Kinetics of Acetate Oxidation by Two Sulfate Reducers Isolated from Anaerobic Granular Sludge

Stefanie J. W. H. Oude Elferink,* Suzanne B. I. Luppens, Christian L. M. Marcelis, and Alfons J. M. Stams

Department of Microbiology, Wageningen Agricultural University, 6703 CT Wageningen, The Netherlands

Received 29 December 1997/Accepted 2 April 1998

Kinetic parameters of acetate oxidation were determined for the sulfate reducers Desulforhabdus amnigenus and Desulfobacca acetoxidans. Based on these parameters, both sulfate reducers seem to be able to outcompete Methanosaeta spp. for acetate in acetate-fed anaerobic bioreactors. Mixed-substrate studies showed that D. amnigenus degraded acetate and hydrogen simultaneously but preferred lactate, propionate, and ethanol over acetate.


* Corresponding author. Present address: DLO-Institute for Animal Science and Health (ID-DLO), Department of Ruminant Nutrition, P.O. Box 65, 8200 AB Lelystad, The Netherlands. Phone: 31 320 237359. Fax: 31 320 237320. E-mail: S.J.W.H.Oudeelferink{at}ID.DLO.NL.


Appl Environ Microbiol, June 1998, p. 2301-2303, Vol. 64, No. 6
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.



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