The alcohol solution of the Resina draconis was dripped into gelatin watery solution and was capsulated immediately when it produced microcrystalline in nascent state.

• 利用固体龙血竭溶于乙醇而不溶于水的性质,将龙血竭乙醇溶液滴入溶有囊材明胶的水溶液中,当产生初生态微晶时立刻进行包裹,制备纳米龙血竭微胶囊。