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Distribution of selected substances in blue varieties of table grapes

Soural, I. and Wendelin, S. and Balík, J. (2019) Distribution of selected substances in blue varieties of table grapes. Acta Alimentaria, 48 (2). pp. 221-228. ISSN 0139-3006 (print); 1588-2535 (online)

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Abstract

This study contains data of seven blue cultivars of table grape (Vitis vinifera L. and Vitis labrusca L.): Attika, Early Cardinal, Eszter, Chasselas rosé, Königliche Esther, Muscat bleu, and Nero. The following were determined in intact berries: malic, tartaric, and titratable acids, pH values, sugar content, and antioxidant capacity. Concentrations of the following compounds were determined in the pulp of a analysed berries: phenolic acids and catechins. The last analysis focused on skins; in addition to the same phenolic acids and catechins, excluding epicatechin, analysed from pulp; ferulic acid and stilbenes were also studied. Higher contents of procyanidin B2 and gallic acid were found in the pulp as compared to those found in skins. Studies during the ripening stage showed that the higher ratio of procyanidin B2 and gallic acid concentrations in the pulp vs. skins relates to late-ripening cultivars, while for early-ripening cultivars a lower ratio was observed. Contents of phenolic acids, catechin, stilbenes, and anthocyanins were studied by means of LC-DAD; other compounds were measured by FTIR.

Item Type: Article
Additional Information: MTA KFB támogatási szerződés alapján archiválva
Subjects: Q Science / természettudomány > QD Chemistry / kémia > QD01 Analytical chemistry / analitikai kémia
Depositing User: Violetta Baliga
Date Deposited: 16 Aug 2019 08:58
Last Modified: 30 Jun 2020 23:28
URI: http://real.mtak.hu/id/eprint/95725

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