Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Sector 81, S.A.S. Nagar, Manauli PO 140306, Punjab, India.
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Sector 81, S.A.S. Nagar, Manauli PO 140306, Punjab, India.
Bioresour Technol. 2022 Mar;347:126663. doi: 10.1016/j.biortech.2021.126663. Epub 2022 Jan 10.
Electroactive microorganisms (EAMs) use extracellular electron transfer (EET) processes to access insoluble electron donors or acceptors in cellular respiration. These are used in developing microbial electrochemical technologies (METs) for biosensing and bioelectronics applications and the valorization of liquid and gaseous wastes. EAMs from extreme environments can be useful to overcome the existing limitations of METs operated with non-extreme microorganisms. Studying extreme EAMs is also necessary to improve understanding of respiratory processes involving EET. This article first discusses the advantages of using extreme EAMs in METs and summarizes the diversity of EAMs from different extreme environments. It is followed by a detailed discussion on their use as biocatalysts in various bioprocessing applications via bioelectrochemical systems. Finally, the challenges associated with operating METs under extreme conditions and promising research opportunities on fundamental and applied aspects of extreme EAMs are presented.
电活性微生物（EAMs）利用细胞呼吸中的细胞外电子传递（EET）过程来获取不溶性电子供体或受体。这些微生物在开发用于生物传感和生物电子学应用以及液体和气体废物增值的微生物电化学技术（METs）中被使用。来自极端环境的 EAMs 可以克服使用非极端微生物操作的 METs 存在的局限性。研究极端 EAMs 还有助于提高对涉及 EET 的呼吸过程的理解。本文首先讨论了在 METs 中使用极端 EAMs 的优势，并总结了来自不同极端环境的 EAMs 的多样性。接着详细讨论了它们作为生物催化剂在各种生物加工应用中通过生物电化学系统的应用。最后，介绍了在极端条件下运行 METs 相关的挑战以及关于极端 EAMs 的基础和应用方面的有前景的研究机会。
