不同微胶囊化方法对叶黄素微胶囊性能的影响

Effects of different microencapsulation methods on the property of lutein microcapsule

以麦芽糊精、酪蛋白为壁材,分别用喷雾干燥、冷冻干燥制备叶黄素微囊。用8%HPMC的乙醇水溶液作为包衣剂,对喷雾干燥制备的叶黄素微胶囊进行二次包埋。以微胶囊化效率、表面形态等理化性质及贮存稳定性为主要指标,考察三种微胶囊化方法制备的叶黄素微囊的性能,并与美国进口的5%冷水溶叶黄素微囊产品进行比较。结果表明,二次包埋法制备的叶黄素微囊的性能最优,喷雾干燥法制备的叶黄素微囊的性能次之。

Lutein microcapsule was prepared by spray drying or freeze drying using maltodextrin and casein as wall materials.The spray dried lutein powder was further encapsulated in 8% HPMC alcohol aqueous solution.Taking storage stability and physico-chemical properties like microencapsulating efficiency and surface appearance as the main estimating indexes, the three lutein powder prepared by different microencapsulating methods was investigated and compared with 5% American lutein powder dissolved in cold water.The results showed：the best lutein powder was prepared by double encapsulation, and the second was by spray drying.