The upper phase of ethyl acetate–n-butyl alcohol–water (1:4:5, v/v/v) was pumped into the multilayer-coiled column with a ÄKTA prime plus system (GE Healthcare, Piscataway, NJ, USA). After the column was totally filled with the two phases, only the lower phase was pumped at a flow-rate of 1.5mlmin−1; and at the same time, the HSCCC apparatus was rotated at a revolution speed of 850rpm. After hydrodynamic equilibrium was reached, 5 ml of the sample solution containing 400 mg of the crude extract was in troduced into the column through the injection valve.All through the experiment the separation temperature was controlled at 25◦C by a Multi Temp