大孔树脂对野菊花总黄酮吸附分离特性的影响

选择12 种大孔树脂，比较其对野菊花总黄酮的吸附和解吸性能。在此基础上，筛选出较优的3 种大孔树脂，通过研究其静态吸附动力学特性，进一步筛选出适合分离野菊花总黄酮的理想树脂，并考察pH 值和洗脱剂体积分数对其吸附容量和解吸率的影响。结果表明：XDA-1、LSA-21 和AB-8 树脂有较大的吸附容量和较高的解吸率，且其中XDA-1 树脂显著优于另外两种，其吸附容量高达84.1mg/g、解吸率为96.2%，而且具有良好的静态吸附动力学特性，是更为适合吸附分离野菊花总黄酮的理想树脂。XDA-1 树脂吸附分离野菊花总黄酮较合适的上样液pH 值为4～5，洗脱剂为70% 乙醇溶液。

Macroporous Resin Adsorption for the Separation of Total Flavonoids from Chrysanthemum indicum L.

Totally, 12 macroporous resins were tested for their adsorption and desorption performance to total flavonoids from Chrysanthemum indicum L., and 3 of them, namely XDA-1, LSA-21 and AB-8 resins were selected for subsequent studies, which were carried out to investigate the static adsorption and desorption behaviors of the selected resins. Finally, XDA-1 resin was selected to purify crude total flavonoid extract from Chrysanthemum indicum L. due to its higher adsorption capacity (84.1mg/g) and desorption ratio (96.2%) and better static adsorption kinetics than those of LSA-21 and AB-8 resins. The optimum pH for XDA-1 resin adsorption ranged from 4 to 5 and the optimum desorption solvent 70% ethanol.