10种含花色苷果蔬抗氧化活性的比较

利用DPPH法测定、比较了 1 0种含花色苷果蔬的抗氧化活性 ,结果显示各试样均具有一定程度的抗氧化能力 ,其中杨梅最强 ,其次是李子、美国提子、马蹄。将杨梅与合成抗氧化剂TBHQ的抗氧化活性进行比较 ,结果得知 1 1 5 0g鲜杨梅相当于 1gTBHQ所具有的抗氧化能力 ,表明杨梅具有很强的抗氧化活性 ,有望成为天然抗氧化剂的素材。各果蔬的抗氧化活性与其多酚类物质的含量具有一定的相关性 ,但与花色苷含量的相关性不是很大 ,杨梅花色苷的相对含量虽较布林、茄子低 ,但抗氧化能力及多酚类物质含量均较两者高 ,由此可以推测杨梅抗氧化活性的有效成分除了花色苷 ,还有花色苷以外的其他多酚类物质

Comparision of Anti-oxidation Activity of Ten Kinds Fruits and Vegetables Containing Anthocyanin

Anti oxidant activity of ten kinds of fruits and vegetables containing anthocyanin have been measured by DPPH method The results indicate that each sample displays certain extent of anti oxidation activity, among which Myrica rubra ranks first, followed by plum, grape and chufa in decreasing order. It was found that anti oxidation ability of 1150 g Myrica rubra was comparable with that of 1 g TBHQ, suggesting Myrica's rather strong anti-oxidation activity and the potential of acting as natural antioxidant. Antioxidant activity of various fruits and vegetables was related to the polyphenol content, but was less related to anthocyanin content. Though anthocyanin content in Mycrica rubra was relatively less than those in prune and eggplant, its antioxidant ability and polyphenol content were higher than the latter two, which implied that Myrica rubra probably contained other polyphenol as effective component(s) of antioxidant activity apart from anthocyanin.