多不饱和脂肪酸油脂微胶囊的工艺优化

Process optimization of polyunsaturated fatty acid oil microcapsule

目的:为顺应市场需求开发高浓度PUFA油脂微胶囊。方法:以β-环糊精/明胶为复合壁材,高含量多不饱和脂肪酸油脂葵花籽油为芯材,采用喷雾干燥法制备葵花籽油粉末微胶囊,并通过单因素试验和响应面试验优化油脂微胶囊制备工艺参数。结果:油脂微胶囊的最佳工艺条件为固形物含量25.2%、复合壁材配比(m_(β-环糊精)∶m_(明胶))6.7∶1、乳化剂用量1%、芯壁材配比(m_(葵花籽油)∶m_(复合壁材))1∶2,在该工艺条件下得到的油脂微胶囊颗粒完整,粒径大小均匀,包埋率达94.33%,其中多不饱和脂肪酸含量达21.73%。结论:该制备方法可行,能够实现高浓度多不饱和脂肪酸油脂微胶囊的制备。

Objective:To meet the market demand,high concentration PUFA oil microcapsules were developed.Methods:The microencapsulated oil was prepared by spray drying method withβ-cyclodextrin/gelatin as a composite wall material and high content polyunsaturated fatty acid oil sunflower seed oil as a core material,and the preparation process parameters of oil microcapsules were optimized by single factor experiment and response surface experiment.Results:The best technological conditions of oil microcapsule were solid content of 25.2%,and the mass ratio of composite wall materialβ-cyclodextrin:gelatin was 6.7∶1.The dosage of emulsifier was 1%,and the mass ratio of core wall material was 1∶2.Under this condition,the prepared oil microcapsule particles were round.The particle size was uniform,and the embedding rate was 94.33%.The content of polyunsaturated fatty acid was 21.73%.Conclusion:This preparation method is feasible and can be used to prepare high concentration polyunsaturated fatty acid oil microcapsules.