Inhibitory effects of saturated fatty acids on methane production by methanogenic Archaea

• Autorzy: Zeitz J.O. , Bucher S. , Zhou X. , Meile L. , Kreuzer M. , Soliva C. R.
• Języki publikacji: EN

Abstrakty

EN

The present study investigated the inhibitory effects of saturated fatty acids on methanogenesis in Archaea, and whether or not competitive inactivation of the methanogens’ coenzyme M (HS-CoM) is involved in the inhibition. Strains tested in batch cultures were Methanosarcina barkeri, Methanosarcina mazei, Methanococcus voltae, all incubated at 37°C, and Methanothermobacter thermoautotrophicus, incubated at 65°C. The fatty acids C10, C12, C14 and C18 were supplemented at 1 mg . ml–1 in cultivation medium. The methanogens were susceptible to C10 and C12, and less so to C14. Only M. thermoautotrophicus was affected by C18. In M. mazei cultures, excessive HS-CoM did not prevent the action of C14 which might suggest that competitive inhibition of HS-CoM is not the reason for the SFA-induced effect on methanogenesis. The results indicate that, as a prerequisite to inhibit methanogenesis in Archaea, medium- and long-chain saturated fatty acids have to be at least partially molten.

• Wydawca: -
• Czasopismo: Journal of Animal and Feed Sciences
• Rocznik: 2013
• Tom: 22
• Numer: 1
• Opis fizyczny: p.44-49,fig.,ref.

Twórcy

autor

Zeitz J.O.

• Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, 8092 Zurich, Switzerland

autor

Bucher S.

• Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, 8092 Zurich, Switzerland

autor

Zhou X.

• Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, 8092 Zurich, Switzerland

autor

Meile L.

• Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland

autor

Kreuzer M.

• Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, 8092 Zurich, Switzerland

autor

Soliva C. R.

• Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, 8092 Zurich, Switzerland
• Institute of Animal Nutrition, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland

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