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Influence of locally-selected yeast on the chemical and sensorial properties of Albariño white wines

AutorCarrascosa, Alfonso V. ; Bartolomé, Begoña ; Juega, M.; Núñez Gutiérrez, Yolanda Pilar ; Martínez Rodríguez, María del Carmen ; Martínez-Rodríguez, Adolfo J.
Fecha de publicación2012
CitaciónFood Science and Technology 46(1): 319-325 (2012)
ResumenThe use of selected yeast strains with improved or novel properties may promote wines with special and original quality attributes. In this paper, changes in the chemical composition (aroma compounds and polyphenols) and sensorial properties of Albariño white wines elaborated with the same must and selected yeast (named as 1, 2 and 3) have been studied in comparison with wines subjected to non-inoculated fermentation (control wine). The results indicated that yeast strain can significantly influence the aroma and polyphenol composition of the wines. Wines elaborated with strain 1 had a higher concentration of terpenes and norisoprenoids, which are compounds closely associated with the fruity and fresh character of Albariño white wines. These same wines had a lower concentration of flavan-3-ols, closely associated with the astringency and bitterness of the wine and the lowest browning potential. The formal sensory analysis conducted by 8 trained judges showed that wines elaborated with strain 1 were preferred by the tasting panel. Therefore, the selection of yeast strains could offer the possibility to modulate sensorial attributes related with the aroma and phenol composition in Albariño white wines. © 2011 Elsevier Ltd.
Identificadoresdoi: 10.1016/j.lwt.2011.09.011
issn: 0023-6438
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