Result: Andrographolide microcapsules, which were prepared by above method, were little dissolved in water and quickly released in pH (1.0) and pH (2.0) of solution.

• 结果:该法制备的穿心莲内酯微囊,在水中药物几乎没有溶出,而在酸性溶出介质中则可快速释放。