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采用80%乙醇加热回流和大孔树脂吸附法从山绿茶中提取分离得到总酚酸和总黄酮两个有效部位,分别对两部位中总酚酸和总黄酮及其中主要成分的含量进行了测定,并对山绿茶两个有效部位抗大鼠非酒精性脂肪肝药效作用进行了考察,结果显示,两个有效部位对非酒精性脂肪肝大鼠的肝指数、血脂、转氨酶和肝脏脂肪变性程度均有显著的改善作用. 相似文献
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The content of polyphenolic compounds including chlorogenic acid, vitexin-4"-O-glucoside, vitexin rhamnoside, rutin, vitexin, hyperoside in leaf of Crataegus pinnatifida Bunge var. major N. E. Br. at different times was determined by HPLC. The results show that the content of polyphenolic compounds in different times is various. In April, the total content of polyphenolic compounds and the contents of chlorogenic acid, vitexin-4"-O-glucoside, vitexin rhamnoside, rutin reach the peak. And the content of every compound and the total content of these compounds decrease gradually with the plant growing, and reach the lowest point in July to August. Therefore, in order to extract polyphenolic compounds, the optimal harvest time for C. pinnatifida var. major leaf is April. 相似文献
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