【摘要】 目的建立一种适合于工业化生产的甘草苷提取纯化工艺路线。方法以甘草苷的提取率为指标,采用正交试验确定最佳提取条件;并以甘草苷的保留率和除杂率为指标,通过正交试验优选最佳超滤工艺参数。结果最佳提取条件为0.75%氨水24倍,提取3次,每次60 min,甘草苷平均提取率为72.3%。最佳超滤工艺参数:10 nm无机陶瓷膜,压力0.12 MPa,温度25℃,甘草苷平均保留率为98.9%,平均除杂率为23.3%。结论该工艺生产成本低,安全性好,适合工业化应用。更多还原

【Abstract】 Objective To establish a suitable extraction and purification process line for industrial production of liquiritin. Methods With the extraction rate of liquiritin as index, orthogonal test was used to determine the optimum conditions; with the retention rate of liquiritin and impurity removal rate as the indexes, orthogonal test was used to optimize the best ultrafiltration process parameters. Results The optimum extraction conditions were: 24 times 0.75% ammonia water, extracted three times, each time under 60 min. The liquiritin average extraction rate was 72.3%. The best ultrafiltration process parameters were: 10 nm inorganic ceramic membrane, pressure of 0.12 MPa, temperature of 25 ℃. The liquiritin average retention rate was 98.9%, and the average removal rate of impurity was 23.3%. Conclusion This process has low production cost and good safety, and is suitable for industrial application.更多还原