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首页> 外文期刊>Environmental Science & Technology >Acetate Production from Anaerobic Oxidation of Methane via Intracellular Storage Compounds
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Acetate Production from Anaerobic Oxidation of Methane via Intracellular Storage Compounds

机译：甲烷通过细胞内储存化合物的厌氧氧化产生乙酸盐

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摘要

There is great interest in microbial conversion of methane, an abundant resource, into valuable liquid chemicals. While aerobic bioconversion of methane to liquid chemicals has been reported, studies of anaerobic methane bioconversion to liquid chemicals are rare. Here we show that a microbial culture dominated by Candidates 'Methanoperedens nitroreducens', an anaerobic methanotrophic archaeon, anaerobically oxidizes methane to produce acetate, indirectly via reaction intermediate(s), when nitrate or nitrite is supplied as an electron acceptor under a rate-limiting condition. Isotopic labeling tests showed that acetate was produced from certain intracellular storage compounds that originated from methane. Fluorescence in situ hybridization and Nile red staining demonstrated that polyhydroxyalkanoate in M. nitroreducens was likely one of the intracellular storage compounds for acetate production, along with glycogen. Acetate is a common substrate for the production of more valuable chemicals. The microbial conversion discovered in this study potentially enables a new approach to the use of methane as a feedstock for the chemical market.
机译：人们对将甲烷（一种丰富的资源）微生物转化为有价值的液态化学物质非常感兴趣。尽管已经报道了将甲烷好氧生物转化为液体化学品，但对厌氧甲烷生物转化为液体化学品的研究很少。在这里，我们显示了以“ Methanoperedensnitrooreducens”（一种厌氧甲烷营养古细菌）为主导的微生物培养物，在限速作用下将硝酸盐或亚硝酸盐作为电子受体提供时，通过反应中间体间接地厌氧氧化甲烷以产生乙酸盐。健康）状况。同位素标记测试表明，乙酸是由某些源自甲烷的细胞内存储化合物产生的。荧光原位杂交和尼罗河红染色表明，硝基还原支原体中的多羟基链烷酸酯可能是糖原产生的细胞内储存乙酸盐的化合物之一。乙酸盐是生产更有价值的化学药品的常用基材。在这项研究中发现的微生物转化潜在地为使用甲烷作为化工市场的原料提供了一种新方法。

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  • 来源
    《Environmental Science & Technology》 |2019年第13期|7371-7379|共9页
  • 作者

    Cai Chen; Shi Ying; Guo Jianhua; Tyson Gene W.; Hu Shihu; Yuan Zhiguo;

  • 作者单位

    Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia;

    Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia|Cent S Univ, Sch Resource & Safety Engn, Changsha 410083, Hunan, Peoples R China;

    Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia;

    Univ Queensland, Sch Chem & Mol Biosci, Australian Ctr Ecogen, Brisbane, Qld 4072, Australia;

    Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia;

    Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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