The electricity-driven pyruvate fermentation by electroactive Clostridium strain

Title
The electricity-driven pyruvate fermentation by electroactive Clostridium strain
Authors
최옥경엄영순
Keywords
bioelectrochemical synthesis; pyruvate reduction; fermentation
Issue Date
2013-09
Publisher
4th International Microbial Fuel Cells Conference
Abstract
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. Results 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).
URI
http://pubs.kist.re.kr/handle/201004/45807
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KIST Publication > Conference Paper
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