Objective: To explore the best technique parameters on preparing ophiopogon japonicus saponin enteric microsphere by spray drying technique.
Method: The best technique parameters were investigated by orthogonal experimental design and by the target, such as surface appearances, encapsulated efficiency, etc.
Result: The best technique parameters included the inlet temperature (90 degrees C ), the feeding speed (10 mL x min(- 1)), and the rotate speed of atomizer (50 r x min(-1)).
Conclusion: Ophiopogon japonicus saponin enteric microsphere accorded with the expecting demand. The main influencing factor was inlet temperature . It is suitable to industrialize in preparing Traditional Chinese Medicine microsphere.