Effect of Glucose on Carbon Dioxide Assimilation and Substrate Oxidation by Ferrobacillus ferrooxidans

AUTOR(ES)

Silver, Marvin

RESUMO

Ferrobacillus ferrooxidans, grown on either elemental sulfur or ferrous sulfate, was able to use either substrate as an energy source for the assimilation of CO2. In both cases, 0.01 μmole of carbon was incorporated per μmole of oxygen utilized. Glucose inhibited substrate oxidation and CO2 fixation. Sulfur and iron oxidation were inhibited 5 to 15% and 40 to 50%, respectively, in the presence of 10% glucose. Under the same conditions, CO2 assimilation was inhibited 50% with elemental sulfur as the energy source, and was almost totally inhibited when ferrous iron was used.

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