Abstract
IN a previous communication, a strain of brewer's yeast was described which can utilize its carbohydrate reserves by a fermentative mechanism1. During this work it was observed that the presence of oxygen resulted in yeast carbohydrate being degraded at a faster rate. In this yeast, investigation of the effect of oxygen on the endogenous fermentation was hampered by oxidation of ethanol and liberation of respiratory carbon dioxide. A respiratory-deficient mutant provides a system wherein the residual respiration does not interfere to a significant extent. Experiments with one of these mutants have shown that oxygen stimulates the endogenous fermentation.
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References
Chester, V. E., Nature, 183, 902 (1959).
Lindegren, C. C., Nagai, S., and Nagai, H., Nature, 182, 446 (1958).
Ogur, M., St. John, R. C., and Nagai, S., Science, 125, 928 (1957).
Kaplan, N. O., and Ciotti, Margaret M., ‘Methods in Enzymology’, 3, edit. by Colowick, S. P., and Kaplan, N. O. (Academic Press, Inc., New York, 1957).
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CHESTER, V. Effect of Oxygen on Endogenous Metabolism of a Respiratory-deficient Brewer's Yeast. Nature 184, 1956–1957 (1959). https://doi.org/10.1038/1841956a0
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DOI: https://doi.org/10.1038/1841956a0
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