期刊
BIORESOURCE TECHNOLOGY
卷 195, 期 -, 页码 57-65出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.06.005
关键词
Neutral red; Electron transfer; Bioelectrochemical system; Electrosynthesis
资金
- National Science Foundation (NSF) - USA Career Award [0954186]
- NIH Training Grant [5T32GM008336-24]
- National Science Foundation MRI Program Grant [DBI-1229749]
- Fundamental and Applied Chemical and Biological Catalysts to Minimize Climate Change, Create a Sustainable Energy Future, and Provide a Safer Food Supply [WNP00807]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0954186] Funding Source: National Science Foundation
- Div Of Biological Infrastructure
- Direct For Biological Sciences [1229749] Funding Source: National Science Foundation
The aim of this work was to compare the effects of electrosynthesis on different bacterial species. The effects of neutral red-mediated electrosynthesis on the metabolite profiles of three microorganisms: Escherichia coli, Klebsiella pneumoniae, and Zymomonas mobilis, were measured and compared and contrasted. A statistically comprehensive analysis of neutral red-mediated electrosynthesis is presented using the analysis of end-product profiles, current delivered, and changes in cellular protein expression. K. pneumoniae displayed the most dramatic response to electrosynthesis of the three bacteria, producing 93% more ethanol and 76% more lactate vs. control fermentation with no neutral red and no electron delivery. Z. mobilis showed no response to electrosynthesis except elevated acetate titers. Stoichiometric comparison showed that NAD(+) reduction by neutral red could not account for changes in metabolites during electrosynthesis. Neutral red-mediated electrosynthesis was shown to have multifarious effects on the three species. (C) 2015 Elsevier Ltd. All rights reserved.
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