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Pesquisa Agropecuária Brasileira

versão impressa ISSN 0100-204Xversão On-line ISSN 1678-3921

Resumo

SILVA, Marlon Jocimar Rodrigues da et al. Physical and chemical composition of the must and white wine of grapevine cultivars in response to rootstocks. Pesq. agropec. bras. [online]. 2015, vol.50, n.11, pp.1105-1113. ISSN 0100-204X.  https://doi.org/10.1590/S0100-204X2015001100014.

The objective of this work was to evaluate the influence of the rootstocks 'IAC 766 Campinas' and '106-8 Mgt Ripária do Traviú' on the physicochemical characteristics of must and wine of the 'IAC 116-31 Rainha', 'IAC 21-14 Madalena', and 'BRS Lorena' grapevines. Grape must was evaluated for pH, soluble solids (SS), total acidity (TA), and SS/TA ratio. In wine, the following physicochemical analyses were performed: density, alcohol content; total, volatile, and fixed acidity; pH; dry extract; reducing sugars; reduced dry extract; alcohol in weight/reduced dry extract; free and total sulfur dioxide; total polyphenol index (I 280); total polyphenols; flavonoids; and antioxidant activity. Must characteristics of 'IAC 21-14 Madalena' were not affected by rootstocks; however, the 'IAC 766 Campinas' rootstock promoted higher SS/TA in 'IAC 116-31 Rainha' must and lower SS/TA in 'BRS Lorena' must. The 'IAC 766 Campinas' and '106-8 Mgt Ripária do Traviú' rootstocks influenced pH and alcohol content of 'IAC 116-31 Rainha' wine, the dry extract of 'IAC 21-14 Madalena' wine, and the fixed acidity of 'BRS Lorena' wine. There was no influence of the rootstocks on the phenolic compounds and antioxidant activity of wines.

Palavras-chave : Vitis vinifera; Vitis labrusca; classical analyses; polyphenols; table wine.

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