Caracterization of phenolic composition of altitude tropical wines in the Brazilian Northeast

¹ Master Student, University of Bahia Estate, zip code 48900-000, Juazeiro – BA, Brazil
² Enology Laboratory, Embrapa Semiarid, zip code 56302-970, Petrolina – PE, Brazil
³ Enology Laboratory, Embrapa Grape & Wine/Tropical Semiarid, zip code 56302-970, PO Box 23, Petrolina, PE, Brazil

^a Corresponding author: giuliano.pereira@embrapa.br

Abstract

The main goal of the study was to evaluate the phenolic composition of red wines from grapes cultivated in a tropical of altitud región at 1,100 m, in the Northeast of Brazil, called Chapada Diamantina, in Morro do Chapéu city. The región is located in Bahia Estate at 11^∘ 33′ 11′′ S and 41^∘ 09′ 27′′ W. Vineyard was planted in 2011 in randomized blocks, spaced 2.5 m between rows and 1 m between plants. Vines were grafted onto Paulsen 1103 rootstock and irrigated by drip. Pinot Noir, Cabernet Franc, Malbec and Cabernet Sauvignon (Vitis vinífera L.) cultivars were vinified separately, in the Laboratory of Enology at Embrapa in Petrolina, Pernambuco Estate, Brazil. Means evaluated for color intensity (420 nm + 520 nm + 620 nm), total anthocyanins (by different pH), total polyphenol index (at 280 nm), total phenolics (Folin-Ciocalteau) and antioxidante capacity (DPPH) were compared by Tukey testa t 5% probability. Wines showed different phenolic composition, and can be used to elaborate different quality wines.