摘要
为了分离、纯化荔枝核黄酮,比较了4种大孔树脂的静态吸附过程,筛选出适合吸附荔枝核黄酮的树脂;研究了荔枝核黄酮在大孔吸附树脂上的动态吸附特性,并确定分离荔枝核黄酮的适宜条件。结果表明:HPD800大孔吸附树脂对荔枝核黄酮有较好的吸附分离性能,其对荔枝核黄酮的静态吸附平衡时间为10 h;在25℃条件下,通过吸附等温线,Langmuir模型比Freundlich模型能够更好的描述荔枝核黄酮在HPD800树脂上的吸附平衡过程,所得回归方程为:C/Q=C/434.78+1/1.35×434.78(R2=0.999 3),其相关系数R>0.99。吸附溶液适宜的pH值为5.0。确定树脂柱的较佳操作条件为:流速3.0 mL/min,荔枝核黄酮浓度30.81 mg/mL。
In order to separate and purify flavones from litchi kernels,static adsorption behaviors of litchi kernel flavones on four kinds of macroporous resins were studied and the optimum kind of macroporous resin was screened. The adsorption performance of the proper macroporous resin for litchi kernel flavones was studied and the optimum pa- rameters of adsorption were obtained. The results showed that HPD800 macroporous adsorbent resin was the best kind. The adsorption equilibrium time the resin was 10 h. According to adsorption isotherm experiments,Langmuir isotherm could better describe the adsorption balance process of flavones on HPD800 resin than Freundlich under 25 ℃. The re- gression equation was C/Q = C/434.78 ＋ 1/1.35 x434.78（R2 =0. 999 3） ,The correlation coefficient was r =0. 999 7. The proper pH value of litchi kernel flavones adsorption was 5.0. The best conditions were as follow ： flow rate 3.0 mL/min, concentration of litchi kernel flavones 30.81 mg/mL.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2013年第3期206-209,共4页
Food and Fermentation Industries
基金
湛江市科技攻关项目(2010C3110018)
湛江师范学院自然科学研究项目(L1101)
关键词
荔枝核
黄酮
大孔树脂
吸附
litchi kernels, flavones, macroporous adsorbent resin, adsorption
