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Effect of Thiamine on Ethanol and Pyruvate Production in Helminthosporium maydis12

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Abstract

Growth of the fungus Helminthosporium maydis race T in a basal glucose-l-asparagine liquid medium, pH 5, is inhibited by thiamine-HCl. Analysis of the media for organic acids reveals that the extracellular pyruvate concentration decreases as the thiamine-HCl concentration of the medium increases. Extracellular ethanol, in contrast to pyruvate, increases in concentration as the thiamine-HCl concentration of the medium increases under both aerobic and anaerobic conditions.

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