【摘要】 为了筛选出对火龙果果皮红色素纯化性能好的树脂,采用S-8、AB-8、CAD-40、D101 4种大孔树脂对火龙果果皮红色素进行静态吸附和解吸试验,并研究了大孔树脂对火龙果皮色素的纯化工艺条件。结果表明:S-8树脂对色素的吸附与解吸率最高;S-8树脂纯化火龙果皮色素的最佳工艺为:上样液浓度1 g/L,上样液pH5.2,吸附流速2 BV/h,洗脱剂为0.2%HCl-40%乙醇水溶液,洗脱流速2 BV/h。纯化后色素色价提高了4倍,呈亮紫色,色泽通透。更多还原

【Abstract】 In order to screen the optimum macroporous resins and conditions for the purification of pigment from peel of white pitaya,the static adsorption and desorption of four kinds macroporous resins(S-8,AB-8,CAD-40,D101) were investigated.The purification processes conditions were also studied.The result indicated that S-8 resin was suitable resin for purifying pigment from peel of white pitaya.The optimum conditions of purifacation with macroporous resin S-8 were that the initial concentration of pigment 1 g/L,the pH value of pigment 5.2,the flow rate of adsorption 2 BV/h,0.2% HCl-40% ethanol as eluant,and the flow rate of desorption 2 BV/h.The color value of purified pigment was fourfold higher than original one.更多还原