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Potential of Grape Wastes as a Natural Source of Bioactive Compounds.

Authors :
Tang, Guo-Yi
Zhao, Cai-Ning
Liu, Qing
Feng, Xiao-Ling
Xu, Xiao-Yu
Cao, Shi-Yu
Meng, Xiao
Li, Sha
Gan, Ren-You
Li, Hua-Bin
Verotta, Luisella
Napolitano, Alessandra
Source :
Molecules. Oct2018, Vol. 23 Issue 10, p2598. 1p. 6 Charts, 3 Graphs, 1 Map.
Publication Year :
2018

Abstract

Grapes are widely used in the wine and juice industries, which can lead to massive amounts of waste, mostly grape peels and seeds. The antioxidant capacities, total phenolic and flavonoid contents and phenolic profiles of peels and seeds from 30 grape varieties were systemically assessed. The antioxidant activities of fat-soluble, water-soluble and insoluble-bound fractions of grape peels and seeds were evaluated using ferric-reducing antioxidant power and Trolox equivalent antioxidant capacity assays, and their total phenolic contents and total flavonoid contents were determined by the Folin-Ciocalteu method and AlCl3 colorimetry, respectively. It was found that the antioxidant capacities were diverse among different grape peels and seeds. Moreover, several phenolic compounds were identified and quantified, including gallic acid, cyanidin-3-glucoside, epicatechin, catechin gallate, ferulaic acid, rutin and resveratrol, which could contribute to the antioxidant capacities of these grape peels and seeds. Several grape wastes with strong antioxidant activity could be abundant sources of natural bioactive compounds, and have the potential for development into functional foods, food additives and pharmaceuticals. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14203049
Volume :
23
Issue :
10
Database :
Academic Search Index
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
132653977
Full Text :
https://doi.org/10.3390/molecules23102598