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基于秋加耶夫(Chugaev)反应 ,采用分光光度法测定银杏叶中聚异戊烯醇化合物含量 ;以ZnCl2 的CH3COOH溶液 -CH3COCl(体积比10∶1)为显色剂 ,使聚异戊烯醇化合物显色 ,通过在388nm处测定溶液的吸光度确定聚异戊烯醇化合物的含量 ;聚异戊烯醇化合物在0.103～2.060mg范围内与吸光度值有良好线性关系 ;方法的回收率为97 %～103 %,相对标准偏差(RSD)为5.7 %;方法简便、快速。
Based on the Chugaev reaction, the content of polyisoprenylalcohol compounds in Ginkgo biloba leaves was determined by spectrophotometry. Using ZnCl2-CH3COOH solution-CH3COCl (10: 1 by volume) as chromogenic reagent, polyisoprenyl alcohol compound The color of the solution was determined by measuring the absorbance of the solution at 388nm to determine the content of polyisoprenol compounds; polyisoprenol compounds in the range of 0.103 ~ 2.060mg and absorbance values have a good linear relationship; the recovery rate of 97% 103%, relative standard deviation (RSD) of 5.7%; method is simple and fast.