芹菜黄酮在LSA-10树脂上的吸附特性

    Adsorption performance of LAS-10 macroporous adsorbent resin for celery(Apium Graveolens L.) flavones

    • 摘要: 为了分离、纯化芹菜黄酮,比较了8种大孔树脂的静态吸附过程,筛选出了适合吸附芹菜黄酮的树脂;研究了芹菜黄酮在大孔吸附树脂上的动态吸附特性,并确定分离芹菜黄酮的适宜工艺条件。结果表明:LSA-10大孔吸附树脂对芹菜黄酮有较好的吸附分离性能,其对芹菜黄酮的静态吸附平衡时间为4 h;20℃时LSA-10树脂的吸附过程可用Langmuir吸附等温式来描述,吸附溶液适宜的pH值为5.0。操作流速、芹菜黄酮浓度、温度等工艺条件对LSA-10树脂的动态吸附动力学曲线都有影响;确定树脂柱的较佳操作条件为:流速1.0 mL/min,芹菜黄酮浓度0.4 mg/mL,温度20℃。

       

      Abstract: In order to separate and purify flavones from celery, static adsorption behaviors of celery flavones on eight kinds of macroporous resins were studied and the optimum kind of macroporous resin was screened in the present work.Also,the adsorption performance of the proper macroporous resin for celery flavones was researched and the optimum parameters of adsorption were procured. The results showed that LSA-10 macroporous adsorbent resin which could be used to extract and separate celery flavones was the optimum kind of macroporous resin among eight types of macroporous resins under the experimental condition. The adsorption equilibrium time of LSA-10 macroporous adsorbent resin for celery flavones was 4 h. The isotherm of LSA-10 macroporous adsorbent resincould be described by Langmuir isotherm at 20℃. The proper pH value of celery flavones solution for adsorption was 5.0. Additionally, the factors such as flow rate, temperature and concentration of celery flavones had influences on the dynamic adsorption kinetic curves of LSA-10 macroporous adsorbent resin. The better conditions were as follow: flow rate 1.0 mL/min, concentration of celery flavones 0.4 mg/mL and temperature 20℃.

       

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