Abstract
The evolution of the activity of the general amino acid permease and ethanol and glucose concentrations in the medium were studied in a mild fermentation process carried out by a wine strain of Saccharomyces cerevisiae var. ellipsoideus isolated from grape musts in spontaneous fermentation. The cells displayed a reduction in the activity of the general amino acid permease parallel to the increase of ethanol in the medium. This ethanol increase was not enough to promote a substantial inhibition on the total polypeptide synthesis measured as polyuridylic-acid-directed polyphenylalanine synthesis.
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