大孔吸附树脂分离纯化大青叶有机酸部位的实验研究

目的:应用大孔吸附树脂分离纯化大青叶有机酸部位。方法:大青叶以70%乙醇(pH=2)索氏提取,以邻氨基苯甲酸为考察指标,优选最佳吸附树脂并采用正交试验优化影响树脂吸附的重要因素,确定其合理工艺流程。结果:以HPD100型树脂对大青叶中有机酸组分的吸附与解吸性能较好,采用3BV(树脂床体积)60%乙醇易于洗脱;正交试验结果表明以药液中邻氨基苯甲酸浓度为0.18mg.mL-1、pH3.5及洗脱流速为2BV.h-1的参数组合应用效果良好,经济省时。结论:应用HPD100型大孔吸附树脂分离纯化大青叶中有机酸活性部位,其综合性能良好,具有一定的药用前景。

Research on the Extraction and Purification of Organic Acids from Folium Isatidis with Macroporous Adsorptive Resin

OBJECTIVE:To extract and purify organic acids with macroporous resins from Folium Isatidis.METHODS:Folium Isatidis was extracted with 70% aqueous ethanol(pH=2)by Soxhlet extraction.The process was optimized by employing orthogonal test design with the content of anthranilic acid as the index.RESULTS:The resin HPD100 had much better adsorption capacity and desorption ratio by using 3 BV 60% aqueous ethanol to extract organic acids in Folium Isatidis than other resins.The results showed that HPD100 possessed the better ecomic under the concentration of sample 0.18mg·mL-1,the condition of pH 3.5,and flowing rate of 2BV·h-1.CONCLUSION:Macroporous resin HPD100 may be value of isolating and purifying the organic acids from Folium Isatidis.