Evaluation of elemental profile coupled to chemometrics to assess the geographical origin of Argentinean wines

Traceability of wines requires knowledge of their characteristics, which are associated with the geographical origin of grape, soil, water, climate as well as the winery techniques. The aim of this work was to classify wines and soil from three production areas of Argentina according to multielement...

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Bibliographic Details
Published in:Food chemistry 2010-03, Vol.119 (1), p.372-379
Main Authors: Fabani, María P., Arrúa, Ruth C., Vázquez, Fabio, Diaz, María P., Baroni, María V., Wunderlin, Daniel A.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Canonical correlation
chemometrics
Classification
correlation
discriminant analysis
elementary particles
Fermented food industries
food composition
Food industries
Fundamental and applied biological sciences. Psychology
Geographical origin
geographical variation
hydrochemistry
Metals
Provenance
Soil
soil chemistry
traceability
Vitaceae
Wine
winemaking
wines
Wines and vinegars
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Summary:Traceability of wines requires knowledge of their characteristics, which are associated with the geographical origin of grape, soil, water, climate as well as the winery techniques. The aim of this work was to classify wines and soil from three production areas of Argentina according to multielement data. The influence of the provenance soil on the wine element composition was also investigated. Eleven elements were determined in 31 wine samples and 137 soil samples from regions under study. Stepwise discriminant analysis allows us to correctly classify 100% of the wines analysed from the three regions using only seven parameters (K, Fe, Ca, Cr, Mg, Zn and Mn) and 92% correct classification for soils using seven variables (Ca, Cr, K, Fe, Cu, Zn and, Mg). Canonical analysis between soils and wines datasets affords a correlation coefficient of 0.85 ( P-value < 0.001). Thus, almost 85% of variability observed amongst wines could be attributed to the soil in which the vines were cultivated. The analysis of elemental concentrations in the wines and soils, in combination with chemometrics, provides a powerful tool to verify the geographical origin of wines.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2009.05.085