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采用浸泡与回流的方法从银杏根中提取黄酮 ,用 72 1型分光光度计测得总黄酮含量为 6 .89% .高效液相色谱法检测银杏根中槲皮素百分率为 1.2 4 % ,是黄酮类化合物中含量较高的成分 .紫外 -可见分光光度法确定最佳检测波长为370nm .
The flavonoids were extracted from ginkgo biloba root by soaking and refluxing method. The content of total flavonoids was determined by 72 1 spectrophotometer to be 6.99%. The percentage of quercetin in ginkgo biloba roots was 1.24% by HPLC. The higher content of flavonoids. Ultraviolet-visible spectrophotometric determination of the best detection wavelength of 370nm.