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Título: | Pattern recognition of three Vitis vinifera L. red grapes varieties based on anthocyanin and flavonol profiles, with correlations between their biosynthesis pathways |
Autor: | Figueiredo, M.; Martínez-Carballo, Elena; Cancho-Grande, B.; Santiago Blanco, José Luis CSIC ORCID ; Martínez Rodríguez, María del Carmen CSIC ORCID; Simal-Gándara, J. | Palabras clave: | Red grape Polyphenols Anthocyanins Flavonols Authenticity Brancellao Gran Negro Mouratón HPLC-DAD-MS |
Fecha de publicación: | 2012 | Editor: | Elsevier | Citación: | Food Chemistry 130: 9-19 (2012) | Resumen: | The presence of anthocyanins and flavonols in three selected red grape varieties was investigated, in order to use their polyphenolic characterisation as a fingerprint. Berry skins of Gran Negro grapes were characterised by the presence of high content of malvidin- and peonidin-3-O-glucoside; Mouratón grapes, by the presence of high content of petunidin- and delphinidin-3-O-glucoside; and Brancellao grapes, by the presence of high content of cyanidin-3-O-glucoside. The main flavonols found included the 3-O-glucosides of quercetin, myricetin, kaempferol, laricitrin, isorhamnetin and syringetin. Using cluster analysis and principal components analysis, Gran Negro could be characterised by their content of isorhamnetin-3-O-glucoside and syringetin-3-O-glucoside and, along with Mouratón, by their myricetin conjugates. Flavonol profile could not provide a fingerprint of Brancellao variety. Stepwise discriminant analysis was performed in order to find the polyphenolic compounds, which characterised the selected grape varieties. Finally, anthocyanin and flavonol profiles in red grapes were compared and results confirmed that biosynthesis of flavonols is closely related to that of anthocyanins. © 2011 Elsevier Ltd. All rights reserved. | URI: | http://hdl.handle.net/10261/65573 | DOI: | 10.1016/j.foodchem.2011.06.006 | Identificadores: | issn: 0308-8146 |
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