Microbial resource mining of electroactive microorganism (EAM) is currently methodically hampered due to unavailable electrochemical screening tools. Here, we introduce an electrochemical microwell plate (ec-MP) composed of a 96 electrochemical deepwell plate and a recently developed 96-channel multipotentiostat. Using the ec-MP we investigated the electrochemical and metabolic properties of the EAM models and with acetate and lactate as electron donor combined with an individual genetic analysis of each well. Electrochemical cultivation of pure cultures achieved maximum current densities ( ) and coulombic efficiencies () that were well in line with literature data. The co-cultivation of and led to an increased current density of of 88.57 ± 14.04 µA cm (lactate) and of 99.36 ± 19.12 µA cm (lactate and acetate). Further, a decreased time period of reaching and biphasic current production was revealed and the microbial electrochemical performance could be linked to the shift in the relative abundance.
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| http://dx.doi.org/10.3389/fbioe.2021.821734 | DOI Listing |
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