紫苏黄酮对食用油脂抗氧化作用的研究

Antioxidation of Flavonoids from Perilla Frutescens for Rapeseed Oil

用三种方法对紫苏茎、叶中黄酮类化合物进行了提取,并以食用菜油作底物,用烘箱贮藏法测定抗氧化活性。结果表明,60%丙酮提取法提取的黄酮抗氧化活性最强,其次是80%乙醇提取的黄酮,水提取的黄酮效果最差。同时对三种方法的黄酮含量和提取率进行了比较。

Flavonoids from Perilla frutescens were prepared by three extraction methods. The antioxidation activity of the flavonoids was measured with rapeseed oil as the substrate. The result shows that the antioxidation activities of the flavonoids extracted by three methods range as the following order： aceton extraction 〉 ethanol extraction 〉 water extraction. The product flavonoid contents and extraction rates by the three methods are presented.