Methods: Angelica, Atractylodes macrocephala and Giant typhonium rhizome were selected in the Pharmacopeia ( 2005 Edith ) .

• 方法本实验研究从药典(2005年版)中选取当归、白术、制白附子三种药用植物,按植物化学方法从中提取出水溶性多糖;