Purification of procyanidins extracted from blueberry by macroporous adsorbent resin was studied.The adsorption and desorption performance of procyanidins on sorbet resins were discussed.In the study the effects of adsorption time,pH,adsorption temperature,desorption time,ethanol concentration,desorption temperature on the purification effect were investigated.The results were analyzed with orthogonal rotary regression method to establish the relationship between performance function and each parameter.Resu...