微胶囊技术制备粉末荆芥精油的研究

Preparation of powder of Schizonepeta tenuif olia Briq.volatile oil by microcapsule technology

以荆芥油为芯材,以大豆分离蛋白为壁材,利用乳化和喷雾干燥相结合的方法制备粉末荆芥油。确定的最佳制备工艺条件为:采用单甘酯加吐温-60(HLB=8·0)为乳化剂,添加量为1·5%,乳化温度80℃,明胶添加量2%,荆芥油与壁材大豆分离蛋白的比例为0·5:1,乳状液总固形物浓度为30%。喷雾干燥进风温度210℃,出风温度85℃。该条件下制备的荆芥油粉末微胶囊化效率达88·1%,表明该法是一种适宜的粉末荆芥油制备方法。

Making use of Schizonepeta tenuif olia Briq.volatile oil（SBO）as core material and soybean protein as wall material,SBO powder was prepared by emulsification and spray drying.The optimum processing conditions were as follows：monoglyceride combining with tween-60（HLB=8.0）as emulsifier,emulsion concentration1.5%,emulsion temperature 80℃,gelatin concentration 2.0%,ratio of oil to wall materials 0.5：1,the solid content of emulsion 30%,temperatures of inlet and outlet of spray drying were 210℃ and 85℃,respectively.Under the optimum conditions,the embedding efficiency reached 88.1%.So this method was a suitable method for preparation of SBO powder.