Fig. 1

HPLC chromatograms of a standard ethyl-p-methoxycinnamate (EPMC) and b K. galangal Linn.rhizome extract. Chromatographic separation condition used was as follows: Thermoscientific^™ Hypersil Gold Column 5 μm C18 column; mobile phase consisting of a mixture of water and methanol with isocratic elution (46%: 54% v/v) at follow rate of 1 ml/min; injection volume of 10 μl; and UV-detection at 270 nm