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Title From Microorganism-Based Amperometric Biosensors towards Microbial Fuel Cells
Authors Andriukonis, E.
Celiesiute-Germaniene, R.
Ramanavicius, S.
Viter, Roman Vitaliiovych
Ramanavicius, A.
Keywords microbial biofuel cells
direct electron transfer
extracellular electron transfer
cell membrane/wall modifications
conducting polymers
enzyme-based biofuel cells
microbial biosensors
whole cell-based biosensors
Type Article
Date of Issue 2021
Publisher MDPI
License Creative Commons Attribution 4.0 International License
Citation Andriukonis E, Celiesiute-Germaniene R, Ramanavicius S, Viter R, Ramanavicius A. From Microorganism-Based Amperometric Biosensors towards Microbial Fuel Cells. Sensors. 2021; 21(7):2442.
Abstract This review focuses on the overview of microbial amperometric biosensors and microbial biofuel cells (MFC) and shows how very similar principles are applied for the design of both types of these bioelectronics-based devices. Most microorganism-based amperometric biosensors show poor specificity, but this drawback can be exploited in the design of microbial biofuel cells because this enables them to consume wider range of chemical fuels. The efficiency of the charge transfer is among the most challenging and critical issues during the development of any kind of biofuel cell. In most cases, particular redox mediators and nanomaterials are applied for the facilitation of charge transfer from applied biomaterials towards biofuel cell electrodes. Some improvements in charge transfer efficiency can be achieved by the application of conducting polymers (CPs), which can be used for the immobilization of enzymes and in some particular cases even for the facilitation of charge transfer. In this review, charge transfer pathways and mechanisms, which are suitable for the design of biosensors and in biofuel cells, are discussed. Modification methods of the cell-wall/membrane by conducting polymers in order to enhance charge transfer efficiency of microorganisms, which can be potentially applied in the design of microbial biofuel cells, are outlined. The biocompatibility-related aspects of conducting polymers with microorganisms are summarized.
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