Caracterização físico-química de vinhos em diferentes regiões do Rio Grande do Sul

Abstract

The characteristics of the wine comes terroir of each region combined to the winemaking process, giving rise to wines with unique characteristics. The Rio Grande do Sul is now the largest grape grower and wine country, and Brazil is the 13th in wine production. This study aimed to characterize wines from the regions and wineries in Serra Gaucha, Gaúcha Campaign, Western Border and Rio Grande do Sul Center, where physicochemical analyzes were performed: ethanol, pH, phenols and tartaric acid in Winescan equipment at the University UNIPAMPA. As for the color parameters obtained by absorbance of wavelengths 420nm, 520nm, 620nm, total polyphenol index (D280nm), color index and pitch were quantified in Agronomy Lab (LabAgro) of the Federal University of Pelotas (UFPel). Samples were collected wine already prepared in Vitis vinifera paints of Merlot varieties, Cabernet Sauvignon and Tannat, and white varieties, Riesling Italico and Chardonnay. For wines from Cabernet Sauvignon highlight the Frontier West with phenol values gLˉ¹ 67.62, among the wineries there is the wine "CV '' with ethanol 13,60% v / v and the winery" SB '' with the index total polyphenols 23.10. The Merlot wines of the region West Frontier stood out with phenols 78.39 g L ¹. The wineries "MV" with ethanol 13.07% v / v, and the winery "VM" with 79.32 gLˉ¹ phenols. The region of Serra Gaucha stands out for Tannat wines with ethanol 13.20% v / v, the wineries "L" with the index of total polyphenols 29.50 and the "G" winery with 61.42 gLˉ¹ phenols. The Riesling Italic wines the Serra Gaucha was superior in relation to ethanol with 10.94% v / v. The wine "P" highlighted with 10.94 v / v% ethanol, and wine "MV" 20.65 gLˉ¹ with phenols. The Chardonnay wines highlight the campaign with ethanol 12.98, phenols. Highlighting the vnhos produced in winery "BS" with ethanol 13.71 v / v%, phenols 35.72 gLˉ¹ and wine "DL" got 420nm absorbance representing the color yellow in 1,131.