Investigations of La Rioja
Terroir for Wine Production
Using <sup>1</sup>H NMR Metabolomics
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Abstract
In this study, La Rioja wine terroir was investigated
by the use
of <sup>1</sup>H NMR metabolomics on must and wine samples. Rioja
is a small wine region in central northern Spain which can geographically
be divided into three subareas (Rioja Alta, Rioja Baja, and Rioja
Alavesa). The winemaking process from must, through alcoholic and
malolactic fermentation, was followed by NMR metabolomics and chemometrics
of nine wineries in the Rioja subareas (terroirs). Application of
interval extended canonical variate analysis (iECVA) showed discriminative
power between wineries which are geographically very close. Isopentanol
and isobutanol compounds were found to be key biomarkers for this
differentiation