It was studied to purify procyanidins which are extracted from grape seeds by macroporous adsorbent resin.The adsorption and desorption performance of procyanidins on 7 kinds of macroporous adsorbent resins were compared.The different factors influencing procynidins purity including solution volume,ethanol concentration,solution velocity,eluting dosage were investigated.The optimum technical conditions were obtained through orthogonal experiments.AB-8 macroporous resin was an excellent adsorbent resin,resin...