Caxias do Sul, Brazil
Caxias do Sul, Brazil

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Dutra S.V.,University of Caxias do Sul | Dutra S.V.,Reference Laboratory Enologic | Adami L.,Reference Laboratory Enologic | Marcon A.R.,Reference Laboratory Enologic | And 8 more authors.
Analytical and Bioanalytical Chemistry | Year: 2011

In the present research, we studied wines from three different south Brazilian winemaking regions with the purpose of differentiating them by geographical origin of the grapes. Brazil's wide territory and climate diversity allow grape cultivation and winemaking in many regions of different and unique characteristics. The wine grape cultivation for winemaking concentrates in the South Region, mainly in the Serra Gaúcha, the mountain area of the state of Rio Grande do Sul, which is responsible for 90% of the domestic wine production. However, in recent years, two new production regions have developed: the Campanha, the plains to the south and the Serra do Sudeste, the hills to the southeast of the state. Analysis of isotopic ratios of 18O/ 16O of wine water, 13C/ 12C of ethanol, and of minerals were used to characterize wines from different regions. The isotope analysis of δ 18O of wine water and minerals Mg and Rb were the most efficient to differentiate the regions. By using isotope and mineral analysis, and discrimination analysis, it was possible to classify the wines from south Brazil. © 2011 Springer-Verlag.

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