Potential of Fruit Wastes as Natural Resources of Bioactive Compounds

G. Deng,Cheng-wen Shen,Xiangrong Xu,Rui Kuang,Ya-Jun Guo,Li-Shan Zeng,Li-Li Gao,Xi Lin,Jie-Feng Xie,E. Xia,Sha Li,Shan Wu,F. Chen,Wen-hua Ling,Huabin Li

Published 2012 in International Journal of Molecular Sciences

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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