THE STUDY ON ADSORPTION PERFORMANCE OF MACROPOROUS RESINS FOR APPLE POLYPHENOLS IN APPLE POMACE

The properties of static and dynamic adsorption and desorption of macroporous resin for polyphenols in apple pomace were investigated. According to the adsorption capacity and elution ratio of the resin, AB-8,NKA,X-5,D4006 types of macroporous resin were selected to mensurate the adsorption ratio. The static adsorption capacity of the four types of macroporous resin was AB-8X-5D4006NKA,and the static elution ratio was X-5NKAAB-8D4006, and the adsorption ratio was AB-8X-5NKAD4006,So the AB-8 resin was selected to purify apple polyphenols. The effects of concentration, pH and work speed of the infusion on the adsorption of the AB-8 resin were studied with dynamic experiment. The concentration of 1.152 8 mg/mL, pH 4.80 and work speed of 2 BV/h were the optimal conditions.Polyphenols absorbed on AB-8 resin was eluted with 4 BV 70 % ethanol in 1 BV/h speed.