Antioxidant and cytoprotective activities of extracts prepared from fruit and vegetable wastes and by-products

作者：Kabir Faisal; Tow Wei Wei; Hamauzu Yasunori; Katayama Shigeru; Tanaka Sachi; Nakamura Soichiro^*

来源：Food Chemistry, 2015, 167: 358-362.

DOI：10.1016/j.foodchem.2014.06.099

• Wastes
• By-products
• Polyphenols
• Antioxidant activity
• Free radical scavenging activity

In this study, fruit and vegetable wastes and by-products were tested for polyphenol content and their antioxidant activity. The highest content of polyphenols as assessed by the Folin-Ciocalteu assay was the hot-water extract of grape seed, followed by the ethanol extract of buckwheat hull. The highest antioxidant activity measured by 2,2-diphenyl-1-picryl-hydrazyl (DPPH) assays was also detected in the hotwater extract of grape seed, followed by the ethanol extract of immature prune. Most of samples showed protective effects against oxidative stress induced by 2,2'-azobis-(2-amidinopropane) dihydrochloride (AAPH) peroxyl radical generator in African monkey kidney (MA 104) cells. Samples containing high amounts of phenolics (more than 30 mg ChAE/g) generally showed high antioxidant activity and a protective effect against AAPH-induced oxidative stress. This study demonstrates that fruit and vegetable wastes and by-products are good sources of high amounts of phenolics with antioxidant properties.

• 出版日期2015-1-15