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《Journal of Jilin Agricultural University》 2008-06
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Content and Dynamic Accumulation of Flavonoids in Leaf and Stem of Apocynum venetum L.Wildly Growing on Western Jilin of China

WEI Chun-yan1,2,LI Qing-hua2,3,HUANG Jiu-lin2,LI Jian-dong2(1.Center of Agricultural Environment and Resources,Jilin Academy of Agricultural Sciences,Changchun 130033,China;2.Key Laboratory for Vegetation Ecology,Ministry of Education,Changchun 130024,China;3.Center of Medical Laboratory,Jilin Medical College,Jilin 132013,China)  
In order to draw harvest time scientifically,dynamic accumulation of the total flavonoid and quercetin in Apocynum venetum L.by the methods of spectrophotometry and HPLC was measured.The results reveal that a trough(full flower period) of total flavonoid content of stem and leaf exists between two peaks;flower and leaf should be used as raw medicinal materials because of their high content of total flavonoid and quercetin;the best harvest date of flower is in the middle ten days of July and that of the leaf is in the last ten days of August.
【Fund】: 国家自然科学基金项目(30470180)
【CateGory Index】: R284
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