Objective To study change and correlation of flavonoids level in fresh and dried roots of Scutellaria baicalensis Georgi among the 24 solar terms in 2013—2014. Methods Harvested roots of the plant at each solar term point,and determined the contents of flavonoids in fresh and dried roots by high performance liquid chromatography. Results Baicalin,total glycosides and total flavonoids increased significantly after drying in shade,while baicalein and total aglycones reduced obviously. Contents of wogonoside a...
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