并用紫外分光光度计测定了该四种类型杜仲中绿原酸类物质的总含量。
It was found that the contents of Chlorogenic acid were very different.
通过对甘薯叶、茎中的总黄酮含量进行了提取，以芦丁为对照品，用紫外分光光度计对其含量进行了初步测定。
This paper reported the extraction and the preliminary determination of flavonoids in sweet potato leaves and stems by UV-spectrophotometry using rutin as comparison sample.
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