大孔树脂纯化榛子壳棕色素粗提液的研究

Purification of brown pigment from hazelnut shells with macro-porous resin

摘要: 对大孔树脂纯化榛子壳棕色素的条件进行研究。比较了5种不同类型的树脂对榛子壳棕色素的纯化效果,结果表明D101树脂对榛子壳棕色素的纯化效果最佳。对D101树脂的纯化条件进行了静态实验和动态实验,实验结果表明,样液pH=4.0,样液稀释倍数为25倍,上样体积为110mL,上样流速为1.5~2.0mL/min;洗脱剂为70%的乙醇,洗脱流速为1.5~2.0mL/min,以上为最佳纯化条件。经D101纯化的色素,色价从22.3提高到了46.8。

Abstract: The purification of brown pigments from hazelnut shells with macro-porous resin was studied. The static adsorption and desorption performance of 5 kinds of resins for brown pigments from hazelnut shells were compared, and the optimum conditions of the static and dynamic adsorption and desorption for separating brown pigments from hazelnut shells by D101 resin were studied. The results showed that the optimal conditions were:pH=4.0, the dilution of the sample solution of 25 times, the volume of the sample solution of110 mL, best velocity of 1.5².0mL/min, eluting with 70% ethanol, eluting velocity of 1.5².0mL/min. The color value of the pigments raised from 22.3 to 46.8 after adsorpted and purificated by macro-porous resin.