1.Method: To determine the DPPH free radical scavenging activity and assay of four bioactive components: baicalin, baicalein, wogonin and wogonin 7 O glucuronide by HPLC.
法:测定清除DPPH自由基活,并以HPLC法测定黄芩苷、黄芩素、汉黄芩苷和汉黄芩素的含量。
2.Result:Four compounds were isolated from the rhizome of A. jianganfeng and elucidated as kaempferol 3 O glucuronide(1), docosanoic acid(2), 3 hydroxy stigmast 5 en 7 one(3) and β sitosterol(4).