Antioxidative Effect of the Fractions Extracted from a Cactus Cheonnyuncho (Opuntia humifusa)

摘要

Antioxidative effects of several solvents extracts of cactus Cheonnyuncho (Opuntia humifusa) grown in Korea were investigated. Because 70% ethanol extract showed relatively high antioxidative activity and extraction yield, it was sequentially fractionated with hexane, chloroform, ethyl acetate, butanol, and water. Ethyl acetate fraction showed highest scavenging activity against free radical DPPH. Antioxidative activity of ethyl acetate fraction determined based on acid and peroxide values under accelerated oxidation condition of lard was similar to that of a-tocopherol, but slightly lower than that of BHA. Similar results were observed using TBA method during peroxidation of linoleic acid.