S.-J. Sheu


The botanical sources of Chinese herbal drugs in a number of commercial samples could be inferred by comparing the contents of some characteristic constituents which were analyzed with high-performance liquid chromatography (HPLC) or capillary electrophoresis (CE). The ratio of ephedrine/pseudoephedrine could be used as a marker to differentiate Ephedra intermedia from other species; the former is unique in having a value far less than unity. The total amounts of alkaloids in Phellodendron wilsonii and P. amurense var. sachalinense were more than 40 mg/g, which were two to three times more than in P. amurense and P. chinense. The contents of ginsenosides in Panax notoginseng and P. quinquefolia were generally higher than in P. ginseng, especially in the case of Rb1.