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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (4): 79-86.doi: 10.3969/j.issn.0253-2417.2016.04.011

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Adsorption Behavior of AB-8 Resin for Anthocyanins from Lycium ruthenicum Murray

WANG Hong1, FU Yan-qiu1, HAN Jing1, ZHAO Yu-ming1, LIU Dong2   

  1. 1. School of Pharmaceutical Englineering, Shenyang Pharmaceutical University, Shenyang 110016, China;
    2. Jinan Boehner Biological Technology Co., Ltd., Jinan 250101, China
  • Received:2015-10-16 Online:2016-08-25 Published:2016-09-01

Abstract: The adsorption performance of AB-8 resin for anthocyanin from Lycium ruthenicum Murray and adsorption mechanism were analyzed by equilibrium adsorption experiment, isothermal adsorption experiment and column adsorption experiment. The results showed that the adsorption kinetics process of AB-8 resin for anthocyanin could well fit with Elovich kinetic model. The linear straight of regression displayed that the Freundlich model was more suitable. Moreover, the enthalpy changes were positive and the absolute value was less than 40 kJ/mol. This indicated the adsorptions of AB-8 resin for anthocyanins were endothermic and physical changes. The Gibbs free energy changes were negative. It indicated that the adsorption process occurred spontaneously. The positive value of entropy changes indicated the increased randomness during the adsorption process. The adsorption mechanism was complicated and the adsorption process was mainly affected by particle diffusion. Adams-Bohart model analysis showed that in the process of column adsorption purification anthocyanins, the flow of mobile phase and the bed height should be reduced and the quality of anthocyanin concentrations should be increased.

Key words: anthocyanin, kinetics, thermodynamics, adsorption mechanism, separation purification

CLC Number: