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Characterization of phenolic composition in Carignan noir grapes (Vitis vinifera L.) from six wine‐growing sites in Maule Valley, Chile

Martínez‐Gil, Ana M, Gutiérrez‐Gamboa, Gastón, Garde‐Cerdán, Teresa, Pérez‐Álvarez, Eva P, Moreno‐Simunovic, Yerko
Journal of the science of food and agriculture 2018 v.98 no.1 pp. 274-282
Vitis vinifera, anthocyanins, catechin, climate, coumaric acids, cultivars, flavonols, grapes, growers, heat sums, temperature, vineyards, viticulture, wine quality, Chile
BACKGROUND: Among Chilean varieties, Carignan noir has had a major resurgence due to its rediscovered wine quality potential. For this, the aim of this study was to characterize phenolic composition of grapes grown in six sites from the Maule Valley. RESULTS: The data showed that myricetin‐3‐glc and catechin were the most important flavonol and flavanol, respectively. Anthocyanin and flavonol composition was correlated with biologically effective degree days, exhibiting a relationship with grape maturity. Flavanol and hydroxycinnamic acid composition was inversely correlated to the average maximum temperature of the warmest month, showing that their synthesis is favored by cooler temperatures during the warmest month. CONCLUSION: These results have enological and viticultural interest for grape growers as vineyard site selection for this cultivar can confer differentiable attributes in terms of grape composition and quality. On the other hand, understanding the effects of climate on the synthesis of phenolic compounds may be useful for managing the vineyards with the aim of improving grape quality. © 2017 Society of Chemical Industry