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首页> 外文期刊>Canadian journal of microbiology >THE RESPONSE OF METHANE CONSUMPTION BY PURE CULTURES OF METHANOTROPHIC BACTERIA TO OXYGEN
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THE RESPONSE OF METHANE CONSUMPTION BY PURE CULTURES OF METHANOTROPHIC BACTERIA TO OXYGEN

机译：嗜营养菌的纯培养对甲烷消耗的反应

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The rates of CH4 oxidation by strains of groups I and II methanotrophs in pure culture were studied at various O-2 concentrations from 0 to 63% v/v. In the presence of nonlimiting dissolved CH4 and inorganic nitrogen, O-2 concentrations from 0.45 to 20% v/v supported maximum rates of CH4 oxidation. The critical dissolved O-2 concentration under our conditions was about 5.7 mu M, below which O-2 was limiting for CH4 oxidation. Concentrations of O-2 up to 63% v/v depressed the activity of CH4 oxidation by greater than or equal to 23%. We conclude that methanotrophs are not microaerophilic under the conditions of our experiments and that they have a high affinity for O-2. [References: 25]
机译：在0至63％v / v的各种O-2浓度下，研究了纯培养物中I和II组甲烷营养菌菌株的CH4氧化速率。在非限制性溶解的CH4和无机氮的存在下，O-2浓度为0.45％至20％v / v可支持CH4氧化的最大速率。在我们的条件下，溶解的O-2的临界浓度约为5.7μM，低于此浓度O-2限制了CH4的氧化。高达63％v / v的O-2浓度使CH4氧化活性降低了23％以上。我们得出的结论是，在我们的实验条件下，甲烷营养菌不是微需氧菌，它们对O-2具有很高的亲和力。 [参考：25]

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