Influence of a<i>Saccharomyces cerevisiae</i>Selected Strain in the Volatile Composition of Rosé Wines. Evolution during Fermentation
Pablo Fraile, Julián J. Garrido, Carmen Ancı́n
Journal of Agricultural and Food Chemistry
Abstract
There has been considerable controversy about the use of selected pure strains in wine fermentation. For that reason it is important to determine the influence of this vinification technique in the composition of wine because it arises from the type of yeast and the subsequent evolution during fermentation. This study researches the volatile composition of rosé wines from the Garnacha must, inoculated with one selected NA33 strain of Saccharomyces cerevisiae. The inoculated yeast did not predominate in all of the samples. These samples showed a behavior intermediate between those of the control and samples in which NA33 did predominate. The greatest concentration of higher alcohols was in the control wine, and its evolution was similar in all fermentations. The esters formed at the end of the fermentation and their concentrations were higher in the control than in the inoculated samples. In the control, acids were produced above all, in the first half of fermentation, and decreased from then onward. In the sample in which the yeast predominated, the synthesis occurred later and to a lesser extent than in the control.
Extracted Claims
4 claims extracted from this paper into the knowledge graph
Saccharomyces cerevisiae NA33 strain affects esters concentration
“The esters formed at the end of the fermentation and their concentrations were higher in the control than in the inoculated samples.”
Saccharomyces cerevisiae NA33 strain affects acids production
“In the control, acids were produced above all, in the first half of fermentation, and decreased from then onward. In the sample in which the yeast predominated, the synthesis occurred later and to a l...”
Saccharomyces cerevisiae NA33 strain influences volatile composition of rosé wines
“The inoculated yeast did not predominate in all of the samples. These samples showed a behavior intermediate between those of the control and samples in which NA33 did predominate.”