Amino Acid Profiles to Differentiate White Wines from Three Autochtonous Galician Varieties
Loading...
Date
2020
Authors
Mirás Avalos, José ManuelBouzas Cid, Yolanda
Trigo Córdoba, Emiliano
Orriols, Ignacio
Falqué, Elena
Journal Title
Journal ISSN
Volume Title
Publisher
Typology
Journal ContributionArticle
Abstract
Amino acids play a relevant role in wine quality and can allow for classifying wines according to the variety. In this work, the amino acid contents of Albariño, Godello, and Treixadura wines, three autochthonous varieties from Galicia (NW Spain), were determined. During three consecutive vintages, these varieties were grown on the same vineyard and were harvested at optimum maturity, and the wines were elaborated following the same enological protocol. The identification and quantification of the primary amino acids were carried out by high-performance liquid chromatography with photodiode array detection, after a derivatization. Amino acid contents in these white varieties were within the range of values reported for other European wines, but Treixadura wines showed the highest concentrations, while wines from the Albariño variety showed the lowest contents. Apart from proline, whose concentrations were caused by yeast release, the most abundant amino acids were aspartic acid, glutamic acid, lysine, arginine, asparagine, alanine, and histidine. Principal component analysis separated wines by variety according to their amino acid contents.
Description
Keywords
Bibliographic citation
Foods, vol. 9, num. 2, (2020)
AGROVOC subjects
VidVitis vinífera
Vino blanco
Vinos
Calidad
Nitrógeno
Aminoácidos