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Ethanol and biomass production of wild strains and respiratory deficient mutants of Saccharomyces cerevisiae under anaerobic and aerobic conditions

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Summary

In order to test the possibility of producing ethanol under aerobic conditions, 4 mitochondrial mutants of Saccharomyces cerevisiae lacking the capacity to respire were assayed for ethanol and biomass yield. As controls the corresponding wild strains were tested under anaerobic and aerobic conditions. In the latter case respiration was blocked by catabolite repression. The data show that the respiratory deficient mutants yield slightly less ethanol than the anaerobically grown wild strains, but more than those grown aerobically. Therefore, if for technical reasons aerobic fermentation is necessary, the use of mitochondrial mutants would be economically advantageous.

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Authors and Affiliations

  1. Lehrstuhl für Allgemeine Botanik, Ruhr-Universität, D-4630, Bochum 1, Federal Republik of Germany

    Karl Esser, Udo Schmidt & Ulf Stahl

Authors
  1. Karl Esser
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  2. Udo Schmidt
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  3. Ulf Stahl
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Esser, K., Schmidt, U. & Stahl, U. Ethanol and biomass production of wild strains and respiratory deficient mutants of Saccharomyces cerevisiae under anaerobic and aerobic conditions. European J. Appl. Microbiol. Biotechnol. 16, 161–164 (1982). https://doi.org/10.1007/BF00500747

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  • DOI: https://doi.org/10.1007/BF00500747

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