水苏糖液脱色树脂的筛选及其工艺优化

Selection of resins for decolorizing of stachyose solution and optimization of the processing

对DA201-C、D280、AB-8、D301R、001×7及D113这6种树脂进行水苏糖提取液的脱色研究,经过静态吸附实验选出了3种树脂:DA201-C、AB-8和D301R。采用正交实验对脱色条件进行优化,确定了水苏糖提取液脱色的最佳条件为:AB-8树脂、pH5.0、温度30℃,此时提取液的脱色率达86.7%,水苏糖的保留率83.4%。最后对选定的脱色树脂采用不同工艺参数研究其对水苏糖提取液脱色的影响,确定AB-8树脂脱色的最佳洗脱流速为1.5BV/h。

The decoloration effects of six types of resins （ DA201-C, D280,AB-8, D301 R,001 × 7, D113） on stachyose solution were studied.Selected three kinds of resins through static absorption experiments were： DA201-C,AB-8 and D301R.And the optimum decoloring conditions for stachyose solution through orthogonal test was AB-8 resin, pH value of 5.0, temperature of 30℃, at this conditions decolorization rate can reached 86.7%, and stachyose retention rate of 83.4%. Finanly, the different process parameters on the decolorization stachyose solution of the selected decolorization resin were studied, and the best elution flow rate of AB-8 resin decolorization was determined as 1.5BV/h.