Wine Aroma Characterization of the Two Main Fermentation Yeast Species of the Apiculate Genus Hanseniaspora

Fermentation

Eduardo Dellacassa¹  Valentina Olivera²  Eduardo Boido²  María José Valera²  Francisco Carrau² 

[1] Laboratorio de Biotecnología de Aromas, Departamento de Química Orgánica, UdelaR, Montevideo 11800, Uruguay;Área Enología y Biotecnología de Fermentaciones, Departamento Ciencia y Tecnología Alimentos, UdelaR, Montevideo 11800, Uruguay;

关键词: non-Saccharomyces yeasts;    wine aroma;    fermentation clade;    ester acetates;    acetyl transferases;    Hanseniaspora;   

DOI  :  10.3390/fermentation7030162

来源: DOAJ

【 摘 要 】

Hanseniaspora species are the main yeasts isolated from grapes and grape musts. Regarding genetic and phenotypical characterization, especially fermentative behavior, they can be classified in two technological clusters: the fruit group and the fermentation group. Among the species belonging to the last group, Hanseniaspora osmophila and Hanseniaspora vineae have been previously isolated in spontaneous fermentations of grape must. In this work, the oenological aptitudes of the two species of the fermentation group were compared with Saccharomyces cerevisiae and the main species of the fruit group, Hanseniaspora uvarum. Both H. osmophila and H. vineae conferred a positive aroma to final wines and no sensory defects were detected. Wines fermented with H. vineae presented significantly higher concentrations of 2-phenylethyl, tryptophol and tyrosol acetates, acetoin, mevalonolactone, and benzyl alcohol compared to H. osmophila. Sensorial analysis showed increased intensity of fruity and flowery notes in wines vinificated with H. vineae. In an evolutionary context, the detoxification of alcohols through a highly acetylation capacity might explain an adaption to fermentative environments. It was concluded that, although H. vineae show close alcohol fermentation adaptations to H. osmophila, the increased activation of phenylpropanoid metabolic pathway is a particular characteristic of H. vineae within this important apiculate genus.

【 授权许可】

Unknown