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Antioxidants 2015, 4(4), 737-749; doi:10.3390/antiox4040737

Antioxidant White Grape Seed Phenolics: Pressurized Liquid Extracts from Different Varieties

1
Laboratorio de Investigación y Desarrollo de Soluciones Analíticas (LIDSA), Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Quimica, Universidade de Santiago de Compostela, Avda das Ciencias s/n, Campus Vida, E-15782 Santiago de Compostela, Spain
2
Grape Laboratory, Universidade de Santiago de Compostela, Edificio Emprendia, Campus Vida, E-15782 Santiago de Compostela, Spain
*
Authors to whom correspondence should be addressed.
Academic Editors: Antonio Segura-Carretero and David Arráez-Román
Received: 22 September 2015 / Revised: 3 November 2015 / Accepted: 5 November 2015 / Published: 19 November 2015
(This article belongs to the Special Issue Analytical Determination of Polyphenols)
View Full-Text   |   Download PDF [558 KB, uploaded 19 November 2015]   |  

Abstract

Grape seeds represent a high percentage (20% to 26%) of the grape marc obtained as a byproduct from white winemaking and keep a vast proportion of grape polyphenols. In this study, seeds obtained from 11 monovarietal white grape marcs cultivated in Northwestern Spain have been analyzed in order to characterize their polyphenolic content and antioxidant activity. Seeds of native (Albariño, Caiño, Godello, Loureiro, Torrontés, and Treixadura) and non-native (Chardonnay, Gewurtzträminer, Pinot blanc, Pinot gris, and Riesling) grape varieties have been considered. Low weight phenolics have been extracted by means of pressurized liquid extraction (PLE) and further analyzed by LC-MS/MS. The results showed that PLE extracts, whatever the grape variety of origin, contained large amounts of polyphenols and high antioxidant activity. Differences in the varietal polyphenolic profiles were found, so a selective exploitation of seeds might be possible. View Full-Text
Keywords: grape seeds; GSE; grape marc; phenolic profile; antioxidant activity; winemaking wastes; Albariño grape seeds; GSE; grape marc; phenolic profile; antioxidant activity; winemaking wastes; Albariño
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Garcia-Jares, C.; Vazquez, A.; Lamas, J.P.; Pajaro, M.; Alvarez-Casas, M.; Lores, M. Antioxidant White Grape Seed Phenolics: Pressurized Liquid Extracts from Different Varieties. Antioxidants 2015, 4, 737-749.

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