Optimization of the Separation and Purification Process of Astragaloside Ⅳ by Orthogonal Experiment / 中国药房

ABSTRACT

OBJECTIVE:To optimize the technologic conditions for separation and purification process of Astragaloside Ⅳ using macroreticular resins.METHODS:The optimal extraction process and purification technology using macroreticular resins were investigated by orthogonal experiment design with extract yield and content of Astragaloside Ⅳ as evaluation indexes,and the influencing factors were also investigated.RESULTS:The optimal conditions for extraction were as follows:sixfold amount of water was added to extract Astragaloside Ⅳ for 3 times with 1 h each time.The isolation and purification of Astragaloside Ⅳ were influenced by relative density,elution dosage and velocity.CONCLUSION:The established optimal technologic conditions for the extraction,separation and purification of Astragaloside Ⅳ using macroreticular resins proved to be feasible.