A method for the determination of six major ginsenosides in panax species by high performance liquid chromatography (HPLC) with UV detection at 203 nm is described The six major ginsenosides, which were reported to account for more than 90% of the total ginsenosides content of the panax species' root, were successfully separated using gradient HPLC The column to be used was a Cosmosil C\-\{18\} reversed phase,4 6 mm i d ×250 mm, 5 μm (Japan), connected with a C\-\{18\} guard column and the mobile...