饲料添加剂用黄芩甙提取工艺条件的优化

In order to optimize the extracting technique of baicalin in Scutellaria baicalensis Georgi， the orthogonal experimental design was adopted in the diyestion and the acid-deposition processes， UV spectroscopic method was employed to determine the content of baicalin . Results proved that the best diyestion technique was A3B3C2， i.e. diyestion time was 1.5 h， temperature was 100℃， pH was 7.0; the best acid deposition technique was A′2B′3C′1D′3， i.e. heat preservation time was 1.0 h， temperature was 80℃， pH was 1.0， whisht placement time was 12 h. The optimized techniques mentioned above were feasible. The extraction rate was 91.56%， baicalin content was 94.12% based on the techniques.