Experimental Studies on the Preparation of Shenjincao (Palhinhaea cernua)Injection by Double-ultrafiltration / 中草药

ABSTRACT

Experiments on the preparation of Shenjincao (Palhinhaea cernua (L. )Franco et Vasc. jinjection by ultrafiltration was carried out. Innuence of pH and concentration on the quality of the prepared injection was investigated. It was found that the filterability of active principles was higher at lower pH and concentration,and vice versa. Therefore,a double ultrafiltration process was developed accordingly,which can remove macro and micro molecular impurities from the solution under different conditions. The quality of the injection was improved and loss of active principles was reduced to a minimum. Mechanism of the double ultrafiltration was briefly discussed.