Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 505819
Title Toxicity of long chain fatty acids towards acetate conversion by Methanosaeta concilii and Methanosarcina mazei
Author(s) Silva, Sérgio A.; Salvador, Andreia F.; Cavaleiro, Ana J.; Pereira, M.A.; Stams, Fons; Alves, M.M.; Sousa, Diana Z.
Source Microbial Biotechnology 9 (2016)4. - ISSN 1751-7907 - p. 514 - 518.
Department(s) Microbiological Laboratory
Publication type Refereed Article in a scientific journal
Publication year 2016

Long-chain fatty acids (LCFA) can inhibit methane production by methanogenic archaea. The effect of oleate and palmitate on pure cultures of Methanosaeta concilii and Methanosarcina mazei was assessed by comparing methane 11% and 64% methanogenic inhibition respectively. This study indicates that M. production rates from acetate before and after LCFA addition. For both methanogens, a sharp decrease in methane production (> 50%) was observed at 0.5 mmol L-1 oleate, and no methane was formed at concentrations higher than 2 mmol L-1 oleate. Palmitate was less inhibitory than oleate, and M. concilii was more tolerant to palmitate than M. mazei, with 2 mmol L-1 palmitate causing concilii and M. mazei tolerate LCFA concentrations similar to those previously described for hydrogenotrophic methanogens. In particular, the robustness of M. concilii might contribute to the observed prevalence of Methanosaeta species in anaerobic bioreactors used to treat LCFA-rich wastewater.

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