Original article: Prediction of the colour and polyphenolic composition of the young red wines from the phenolic potential of the grapes

International Journal of Food Science and Technology - Tập 45 Số 9 - Trang 1843-1851 - 2010
Gustavo González‐Neves, Graciela Gil, Milka Ferrer, Darwin Charamelo, Juan Balado, Rosa Bochicchio, Gabriela Gatto, Alicia Tessore

Tóm tắt

SummaryThe phenolic potential of the grapes of Tannat, Cabernet Sauvignon and Merlot produced in the south region of Uruguay was analysed in four years. The grapes of Tannat had the highest total phenolic richness (A280 = 80.0), total anthocyanin potential (ApH1 = 2540 mg L−1) and extractable anthocyanin potential (ApH3.2 = 1269 mg L−1), although there were important differences between the years. Representative winemaking of each vineyard was carried out. The differences verified in the grapes phenolic indexes were related to the colour and polyphenolic composition of the wines. The correlations between the phenolic indexes of the grapes and the colour and polyphenolic composition of the wines were very high. The estimation of the polyphenolic richness and the extractability of the anthocyanins of the grapes allow to improve the management of the winemaking and the prediction of the chromatic characteristics and the global polyphenolic composition of the wines.

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