Taking Zingiber Dtriolatum Diels as raw materials,the total flavonoids of Yang Feng were extracted by ultrasonic assisted alcohol extraction method,and taking rutin as reference substance,and the content of rutin was determined by UV spectrophotometry.The antioxidative effect of total flavonoids of Yang Yang on soybean oil was researched and compared with vitamin C and citric acid.The results showed that the flavonoids from Yang Yang possessed strong antioxidant ability,and the antioxidant ability of 0.1% flavonoids was equivalent to 0.05% vitamin C.Flavonoids from Yang Yang can be used as natural antioxidant in grease as well as food containing fat,plays a role of oxidation,and prolongs shelf life.%以阳荷姜为原料,采用超声波辅助醇提法提取阳荷总黄酮,以芦丁为对照品用紫外分光光度法测定其含量.研究了阳荷总黄酮对大豆油的抗氧化作用,并与维生素C、柠檬酸进行比较.结果表明:阳荷黄酮具有很强的抗氧化能力,且0.1%的阳荷黄酮抗氧化能力相当于0.05%的维生素C.可作为天然抗氧化剂用于油脂和含油脂食物中,能起到抗氧化作用,延长保质期.
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