Objective To optimize the separation conditions for the detection of encapsulation efficiency of liposome-encapsulated capsaicin on Sephadex G50 mini-column. Method The effects of water content of the gel, centrifuge speed and time on the measurement of encapsulation efficiency were investigated using UV absorbance of the eluate as standard. Result When Sephadex G50 was centrifuged at 1 000 r/min for 6 s for removing 3 ml of water, then at 2 000 r/min for 5 min, liposome-encapsulated capsaicin was separated...