天然抗氧化剂木犀草素抗氧化活性的研究

Studies on the Antioxidative Activity of Nature Luteolin

研究了木犀草素的抗氧化活性及其影响因子。采用TBA快速测定法和烘箱贮存法进行测试,结果表明木犀草素的添加量以0.02%为宜,其效果与同剂量的BHT相当,比同剂量的茶多酚抗氧化效果好。还原能力和清除羟自由基能力均比茶多酚和BHT强。在酸性介质下,pH3～4时,抗氧化活性最大;同时木犀草素也是一种耐热性很好的抗氧化剂,在180℃下处理2h,基本上不影响其抗氧化性能。表明木犀草素作为天然抗氧化剂具有开发潜力。

This paper studied the antioxidative effect factors of nature antioxidant luteolin. TBA rapid test and oven-storage test were applied to the experiments. It was found that the optimum quantity of luteolin added to the reaction mixture was 0.02 % , its antioxidative activity was equivalent to BHT and stronger than that of GTP at the same dosage. The reducing activity and·OH scavenging ability were better than that in BHT and GTP. The antioxidative activity of luteolin reached the maximum in acid conditions at pH 3-4. When heated at 180℃ for 2 hours,the antioxidative activity of luteolin did not decrease apparently. All of these results confirmed that luteolin is of potential value and exploitation in food industry.