大孔树脂纯化盐地碱蓬红色素的工艺研究

为纯化盐地碱蓬红色素,提高其色价,选取X-5、HPD300、D101、HPD400、NKA-9和AB-8等6种大孔树脂对盐地碱蓬红色素进行静态吸附试验,筛选最佳纯化色素树脂,并研究最佳树脂对盐地碱蓬红色素的纯化工艺条件.结果表明,X-5大孔树脂对盐地碱蓬红色素的吸附和解吸效果较好.在动态吸附中,当上样液浓度为1 mg/mL、pH值为6、流速为5 BV/h时,X-5对盐地碱蓬红色素吸附效果最好;以60％乙醇溶液为洗脱剂,洗脱流速为5 BV/h时,解吸效果最好;盐地碱蓬红色素纯化后,色价提高了6.14倍.

Study on purification of red pigment from Suaeda salsa by macroporous resin

To elevate the red pigment from Suaeda salsa color value, the characteristics of static adsorption and desorption of six kinds of macroporous resins (X-5, HPD300, D101, HPD400, NKA-9, and AB-8) to red pigmentfrom S. salsa were investigated. The purification processes conditions of the best macroporous resin for red pigmentfrom S. salsa were also studied. The result indicated that X-5 resin was suitable for purifying red pigment from S.salsa. The appropriate dynamic conditions were liquid concentration 1 mg/mL, pH value 6, and flow rate 5 BV/h. Andusing 60% ethanol as effluent at 5 BV/h in speed, after purification, the color value of purified pigment was 6.14times higher than the original one.