The electricity-driven pyruvate fermentation by electroactive Clostridium strain
- The electricity-driven pyruvate fermentation by electroactive Clostridium strain
- 최옥경; 엄영순
- bioelectrochemical synthesis; pyruvate reduction; fermentation
- Issue Date
- 4th International Microbial Fuel Cells Conference
- Summary of key findings
Here we demonstrate without any mediator the activation of reduced compound production by electricity from pyruvate, whereas only acetate production in the control (without electricity).
Background and relevance
The electron flow from electrode to microorganism can drive microbial reductive metabolism (Ross et al. 2011). We also reported more butyrate production using neutral red as an electron mediator under bioelectrochemical system (BES) that showed NADH-consumption pathway enhanced by the electricity (Choi et al. 2012). There is no report that pyruvate reduction by the interaction between electroactive microorganism and electricity without mediators.
Electroactive Clostridium strain showed faster growth (0.038 h-1) in the cathode compartment poised at -160 mV vs. Ag/AgCl than in a control (without electricity, 0.021 h-1). Also, lactate and formate were detected as well as acetate which was a sole product in the control (Figure 1.1).
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