目的:探讨AB-8大孔树脂对山葡萄籽多酚提取物的纯化工艺参数,确定最佳纯化工艺条件,为山葡萄籽的进一步开发利用提供技术参考.方法:采用酿酒后的山葡萄籽提取物为原料,检测山葡萄籽多酚浓度并计算多酚的吸附率和解吸率;采用AB-8大孔树脂纯化山葡萄籽多酚提取物,通过吸附-解吸性能考察优选山葡萄籽粗提物的最佳纯化工艺.对比山葡萄籽提取物纯化前后的多酚浓度,验证纯化工艺效果.结果:AB-8大孔吸附树脂对山葡萄籽多酚粗提物的吸附率和解吸率分别为90.48%和71.42%,吸附性能和解吸性能良好.确定最佳吸附条件为,样品溶液浓度10 g·L-1,上样流速3 mL·min-1;最佳解吸条件为,洗脱液浓度60%,洗脱流速2 mL·min-1,洗脱体积为2倍柱体积.在该工艺条件下,纯化后山葡萄籽多酚浓度从35.02%提高到88.80%.结论:AB-8大孔树脂纯化山葡萄籽多酚效果良好,值得推广应用.%Objective:To explore the purification technology parameters for polyphenols from vitis amurensis seed extract with AB-8 macroporous resin and to establish the optimum purification process conditions,and to provide technical reference for further development and utilization of vitis amurensis seeds.Methods:The vitis amurensis seeds were regarded as raw material,the concentration of vitis amurensis seed polyphenols was detected, and the adsorption rate and desorption rate of polyphenols were calculated.The AB-8 macroporous resin was used to purify the polyphenols from vitis amurensis seed extract, and the purification technology parameters of vitis amurensis seed polyphenols were optimized by absorption-desorption experiment.The concentrations of polyphenol from vitis amurensis seed extract were compared between before and after purification, and the effect of the purification process was verified. Results: The AB-8 macroporous resin had good absorption and desorption properties to crude the extract of vitis amurensis seed polyphenols,and the adsorption rate and desorption rate were 90.48% and 71.42%.The optimum adsorption conditions and desorption conditions were as follows:the sample concentration was 10 g· L-1 ,the sample flow rate was 3 mL· min-1 ,the eluting concentration was 60%,the elution velocity was 2 mL·min-1 ,and the eluting volume was 2-fold column volume.Under this condition,the concentration of polyphenols from vitis amurensis seed extract after purification was increased from 35.02% to 88.8%.Conclusion:AB-8 macroporous resin has better purification effect,and it is worthy of popularization and application.
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