Abstract: By static adsorption and continuous elution experiments on aloin,the macroporous resin HZ-801 having the highest adsorption capacity and elution ratio was screened out of six macroporous resins.Its optimal purification process param-eters are determined as follows:extract solution at a concentration of 0.2765 mg/ml,adsorption volume 520 ml,60% ethanol as eluent,elution flow rate 2 ml/min,and eluent volume 3 BV(three times bed volume).Under these conditions,the purification fold is 14.72,and the recovery is 86.3%.

Key words: aloin, macroporous resin, separation and purification, screening