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首页> 外文期刊>Applied Microbiology >Electrosynthesis of Organic Compounds from Carbon Dioxide Is Catalyzed by a Diversity of Acetogenic Microorganisms
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Electrosynthesis of Organic Compounds from Carbon Dioxide Is Catalyzed by a Diversity of Acetogenic Microorganisms

机译：多种产乙酸微生物催化二氧化碳中有机化合物的电合成

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Microbial electrosynthesis, a process in which microorganisms use electrons derived from electrodes to reduce carbon dioxide to multicarbon, extracellular organic compounds, is a potential strategy for capturing electrical energy in carbon-carbon bonds of readily stored and easily distributed products, such as transportation fuels. To date, only one organism, the acetogen Sporomusa ovata , has been shown to be capable of electrosynthesis. The purpose of this study was to determine if a wider range of microorganisms is capable of this process. Several other acetogenic bacteria, including two other Sporomusa species, Clostridium ljungdahlii , Clostridium aceticum , and Moorella thermoacetica , consumed current with the production of organic acids. In general acetate was the primary product, but 2-oxobutyrate and formate also were formed, with 2-oxobutyrate being the predominant identified product of electrosynthesis by C. aceticum. S. sphaeroides , C. ljungdahlii , and M. thermoacetica had high (>80%) efficiencies of electrons consumed and recovered in identified products. The acetogen Acetobacterium woodii was unable to consume current. These results expand the known range of microorganisms capable of electrosynthesis, providing multiple options for the further optimization of this process.
机译：微生物电合成是微生物利用电极中产生的电子将二氧化碳还原为多碳的细胞外有机化合物的一种方法，它是一种在易储存和易分布的产品（如运输燃料）的碳-碳键中捕获电能的潜在策略。迄今为止，已显示只有一种生物体，即产卵性产乙酸菌（Sporomusa ovata）能够进行电合成。这项研究的目的是确定是否有更广泛的微生物能够进行此过程。其他几种产乙酸细菌，包括另外两个孢子菌种，Ljungdahlii梭状芽胞杆菌，乙酸梭状芽胞杆菌和热乙酸莫尔氏菌，都消耗了有机酸。通常，乙酸盐是主要产物，但是也形成了2-氧代丁酸和甲酸盐，其中2-氧代丁酸是经乙酸梭菌鉴定的电合成的主要产物。 s。sphaeroides，C. ljungdahlii和M. thermoacetica具有高（> 80％）的效率，可以在确定的产品中消耗和回收电子。乙酸原木醋杆菌不能消耗电流。这些结果扩大了已知的能够进行电合成的微生物的范围，为进一步优化该过程提供了多种选择。

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