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Neutral Red-Mediated Microbial Electrosynthesis by Escherichia Coli, Klebsiella Pneumoniae, and Zymomonas Mobilis

Neutral Red-Mediated Microbial Electrosynthesis by Escherichia Coli, Klebsiella Pneumoniae, and Zymomonas Mobilis

Timothy D Harrington, Abdelrhman Mohamed, Vi N Tran, Saeid Biria, Mahmoud Gargouri, Jeong-Jin Park, David R Gang, Haluk Beyenal

Bioresour Technol. 2015 Nov;195:57-65.

PMID: 26096579

Abstract:

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP553242	Neutral Red		553-24-2	Price

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