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目的:从益母草中提取益母草色素,研究该色素对O-2·、DPPH·的清除作用,以及对β-胡萝卜素-亚油酸氧化体系的抑制作用,评价益母草色素的抗氧化活性。方法:利用有机试剂溶解法对益母草进行色素提取,测定益母草色素对超氧自由基、DPPH·自由基的清除率,评价其对β-胡萝卜素-亚油酸氧化体系的抑制作用。结论:益母草色素对β-胡萝卜素-亚油酸氧化体系有一定的抗氧化性能,并对O-2·、DPPH·自由基亦有一定的清除能力。
OBJECTIVE: To extract the motherwort pigment from Motherwort, study the scavenging effect of the pigment on O-2 ·, DPPH · and inhibit the oxidation of β-carotene-linoleate system, and evaluate the antioxidant activity of Motherwort pigment. Methods: The pigment was extracted from motherwort by organic reagent dissolution method. The scavenging rate of superoxide radical and DPPH · free radical was measured and the inhibitory effect on the β-carotene-linoleic acid oxidation system was evaluated. CONCLUSION: Motherwort pigment has certain antioxidant activity on β-carotene-linoleic acid oxidation system and also scavenges O-2 ·, DPPH · free radicals.