Abstract
The main goal of the study was to evaluate the phenolic composition of red wines from grapes cultivated in a tropical of altitud region at 1,100 m, in the Northeast of Brazil, called Chapada Diamantina, in Morro do Chapeu city. The region 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 vinifera 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.
Highlights
IntroductionThe vitiviniculture potential of a determined region is obtained by many factors, as climate conditions (temperature, pluviosity and luminosity), soil characteristics (depht, mineral, physical and chemical composition), and human choices (rootstocks, varieties, harvest date, for example), changing the grape and wine composition and typicality [1].vine cultivation in regions outside traditional winegrowing zones is possible due to the development of new technologies, as vine management, irrigation, nutrition, and tests with variety adaptation for each region, as well as for particular enological winemaking
The vitiviniculture potential of a determined region is obtained by many factors, as climate conditions, soil characteristics, and human choices, changing the grape and wine composition and typicality [1].vine cultivation in regions outside traditional winegrowing zones is possible due to the development of new technologies, as vine management, irrigation, nutrition, and tests with variety adaptation for each region, as well as for particular enological winemaking
The aim of this work was to evaluate the phenolic composition of red wines elaborated from grapes cultivated in a new winegrowing region, in the Northeast of Brazil
Summary
The vitiviniculture potential of a determined region is obtained by many factors, as climate conditions (temperature, pluviosity and luminosity), soil characteristics (depht, mineral, physical and chemical composition), and human choices (rootstocks, varieties, harvest date, for example), changing the grape and wine composition and typicality [1].vine cultivation in regions outside traditional winegrowing zones is possible due to the development of new technologies, as vine management, irrigation, nutrition, and tests with variety adaptation for each region, as well as for particular enological winemaking. Thes characteristics can influence phenolic composition of the wines, in particular for organoleptic sensations, as color, astringency and bitterness [2,3,4]. Diversity of the factors cited above can influence grapes and its enological potential, in flavors and in colors, linked to the phenolic profile of the wines [5]. In this contexte, the aim of this work was to evaluate the phenolic composition of red wines elaborated from grapes cultivated in a new winegrowing region, in the Northeast of Brazil
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