ISHS Acta Horticulturae 388: International Symposium on Viticulture and Enology
SUGAR UPTAKE BY THREE STRAINS OF SACCHAROMYCES CEREVISIAE DURING ALCOHOLIC FERMENTATION AT DIFFERENT INITIAL AMMONIACAL NITROGEN CONCENTRATIONS |
| Authors: | J.C. Mauricio, J.M. Ortega, J.M. Salmon |
| Abstract:
Growth, ethanol production and sugar transport activity of three enological yeast strains of Saccharomyces cerevisiae (K1, 738-2, and D35) were compared during alcoholic fermentation under conditions where assimilable ammonium was or not limiting. The decrease of sugar transport activity in fermentative yeast strains was modulated by the assimilable nitrogen availability in musts. A good correlation was found between the decrease of sugar transport activity and the fermentative activity and ethanol production rate decreases. | |
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