广西苦丁茶嫩叶和老叶中槲皮素和山柰素的含量测定
Determination of quertetin and kaempferol in the burgeon leaves and old leaves of Guangxi Kudingcha
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Abstract: OBJECTIVE The contents of quertetin and kaempferol in the burgeon leaves or old leaves of Guangxi Kudingcha were compared.METHODS The burgeon and old leaves of Guangxi Kudingcha were extracted with methanol,ethanol or water.Contents of quertetin and kaemp