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Potential of Fruit Wastes as Natural Resources of Bioactive Compounds
Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
Key Laboratory of Marine Bio-Resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China
* Author to whom correspondence should be addressed.
Received: 27 April 2012; in revised form: 20 June 2012 / Accepted: 21 June 2012 / Published: 4 July 2012
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.
Keywords: fruit residues; FRAP; TEAC; phenolic content
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Deng, G.-F.; Shen, C.; Xu, X.-R.; Kuang, R.-D.; Guo, Y.-J.; Zeng, L.-S.; Gao, L.-L.; Lin, X.; Xie, J.-F.; Xia, E.-Q.; Li, S.; Wu, S.; Chen, F.; Ling, W.-H.; Li, H.-B. Potential of Fruit Wastes as Natural Resources of Bioactive Compounds. Int. J. Mol. Sci. 2012, 13, 8308-8323.
Deng G-F, Shen C, Xu X-R, Kuang R-D, Guo Y-J, Zeng L-S, Gao L-L, Lin X, Xie J-F, Xia E-Q, Li S, Wu S, Chen F, Ling W-H, Li H-B. Potential of Fruit Wastes as Natural Resources of Bioactive Compounds. International Journal of Molecular Sciences. 2012; 13(7):8308-8323.
Deng, Gui-Fang; Shen, Chen; Xu, Xiang-Rong; Kuang, Ru-Dan; Guo, Ya-Jun; Zeng, Li-Shan; Gao, Li-Li; Lin, Xi; Xie, Jie-Feng; Xia, En-Qin; Li, Sha; Wu, Shan; Chen, Feng; Ling, Wen-Hua; Li, Hua-Bin. 2012. "Potential of Fruit Wastes as Natural Resources of Bioactive Compounds." Int. J. Mol. Sci. 13, no. 7: 8308-8323.