大孔吸附树脂纯化乌饭树树叶黑色素的研究

Purification of Black Pigment from Vaccinium bracteatum Thunb Leaves by Resin

利用11种大孔吸附树脂对乌饭树树叶黑色素进行纯化分析，AB-8、NKA-9和S-8型大孔吸附树脂的静态吸附量和解吸率较高。由吸附与时间的关系曲线选择AB-8型大孔吸附树脂进行动态分析，得出最佳的纯化条件为：pH为5．05左右，溶液浓度为0．68-1．33mg／mL，吸附流速为3mL／mln。使用7倍体积的95％乙醇解吸率可以超过95％。树脂使用三次后必须进行再生处理。

We purified the black pigment from Vaccinium bracteatum Thunb leaves by resin. The adsorption rote and desorption rate of AB-8 resin were better than others. The optimum conditions were as following： pH 5.05, concentration 0.68 - 1.33 mg/ mL,flow rate 3 mL/min. The resin should be retextured after using for three times.