Abstract:To explore the antioxidant activities of different solvent extracts from apple peels. The extracts of the antioxidants from apple peels were extracted with distilled water, 60% ethanol, anhydrous ethanol and ethyl acetate, respectively. Using Vc as a positive control, antioxidant activities of the extracts were tested and compared by hydroxyl radicals(?OH) scavenging activity, superoxide radical (O2-?) scavenging activity, nitrite radical (NO2-) scavenging activity and reducing power, and the total phenols contents of the extracts were also determined by the Folin-Ciocalteu method. The contents of total phenols from the 60% ethanol extract were significantly higher than those in the other three extracts. All the four extracts exhibited antioxidant capacities in a significant dosage-dependent manner. The 60% ethanol extract had the strongest antioxidant activities, the scavenging capacity to ?OH and O2-? of 60% ethanol extracts were weaker than Vc, but the scavenging capacity to O2- and the reducing power were stronger than Vc. The antioxidant substances from apple peels were main in the 60% ethanol extract.
