球状活性炭对几类中药有效成分的吸附性能研究

目的 研究球状活性炭对几类中药成分的静态吸附性能，探讨其应用于中药精制的可行性。方法 对适宜的高分子树脂进行炭化、活化处理，制备球状活性炭。测定静态吸附条件下球状活性炭对目标成分的吸附等温线，并运用Langmuir单层分子吸附模型对实验数据进行计算机拟合，求出实验条件下吸附剂的表观吸附容量和平衡状态下的理论吸附容量。同时考察75％乙醇溶液的洗脱效果。结果 球状活性炭对盐酸小檗碱和薯蓣皂苷的表观吸附容量以干基计分别为35．46，47．12mg/g，相应的理论平衡吸附容量为96．16，102．04mg／g。对芦丁的表观吸附量也达到40．88mg／g。3种成分的静态洗脱率分别为83．71％，91．45％和87．69％。结论 球状活性炭对生物碱、黄酮和皂苷类物质有良好的吸附与洗脱性能,适于在中药精制纯化中推广应用。

Study on adsorptive properties of spherical activated carbon on several kinds of active ingredient from Chinese materia medica

ObjectTo study the adsorptive properties of spherical activated carbon on some effective ingredients from Chinese materia medica (CMM) and to approach the application feasibility to CMM purification. Methods The spherical activated carbon with high strength has been successfully prepared by the carbonation and activation of polymeric resin. The apparent and theoretical adsorption capacities under the condition of static operation were investigated by Langmuir monolayer adsorption model. Elution by 75% alcohol was studied. Results The static adsorption capacities of the berberine hydrochloride and dioscin were 35.46 mg/g and 47.12 mg/g, and theoretical adsorption capacities were 96.16 mg/g and 102.04 mg/g, respectively. The apparent adsorption amount of rutin was 40.88% mg/g. The elution ratio were 83.71%, 91.45%, and 87.69%, respectively. Conclusion The spherical activated carbon adsorbent shows better comprehensive adsorption properties and can be used to purification.