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Potential of Fruit Wastes as Natural Resources of Bioactive Compounds

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Author(s): Gui-Fang Deng | Chen Shen | Xiang-Rong Xu | Ru-Dan Kuang | Ya-Jun Guo | Li-Shan Zeng | Li-Li Gao | Xi Lin | Jie-Feng Xie | En-Qin Xia | Sha Li | Shan Wu | Feng Chen | Wen-Hua Ling | Hua-Bin Li

Journal: International Journal of Molecular Sciences
ISSN 1422-0067

Volume: 13;
Issue: 7;
Start page: 8308;
Date: 2012;
Original page

Keywords: fruit residues | FRAP | TEAC | phenolic content

ABSTRACT
Fruit wastes are one of the main sources of municipal waste. In order to explore the potential of fruit wastes as natural resources of bioactive compounds, the antioxidant potency and total phenolic contents (TPC) of lipophilic and hydrophilic components in wastes (peel and seed) of 50 fruits were systematically evaluated. The results showed that different fruit residues had diverse antioxidant potency and the variation was very large. Furthermore, the main bioactive compounds were identified and quantified, and catechin, cyanidin 3-glucoside, epicatechin, galangin, gallic acid, homogentisic acid, kaempferol, and chlorogenic acid were widely found in these residues. Especially, the values of ferric-reducing antioxidant power (FRAP), trolox equivalent antioxidant capacity (TEAC) and TPC in the residues were higher than in pulps. The results showed that fruit residues could be inexpensive and readily available resources of bioactive compounds for use in the food and pharmaceutical industries.
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