Oxidation of methane by Methylomicrobium album and Methylocystis sp. in the presence of H2S and NH3

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• 作者：Manuel Cáceres (1)
  Juan C. Gentina (1)
  Germán Aroca (1)
  
• 关键词：Ammonia ; Hydrogen sulfide ; Methane oxidation ; Methylocystis sp. ; Methylomicrobium album
• 刊名：Biotechnology Letters
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：36
• 期：1
• 页码：69-74
• 全文大小：266 KB
• 作者单位：Manuel Cáceres (1)
  Juan C. Gentina (1)
  Germán Aroca (1)
  
  1. School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2147, Valparaíso, Chile
  
• ISSN：1573-6776

文摘

Oxidation of methane by methanotrophs, Methylomicrobium album and Methylocystis sp., was measured at several initial concentrations of H2S and NH3 in the headspace of stoppered flasks, at the same initial concentration of methane as sole carbon and energy source: 15?% (v/v). No effect was observed at 0.01?% (v/v) H2S and 0.025?% (v/v) NH3 in gas phase but over 0.05 and 0.025?% (v/v), respectively, they inhibited the oxidation of methane. The effect of H2S was stronger in Methylocystis sp. and both microorganisms were similarly affected by NH3. Depending on their concentrations in gas phase, H2S and NH3 can thus affect the rate of oxidation of methane and biomass growth of both methanotrophs.