灵芝孢子油微胶囊制备技术

灵芝孢子油是从灵芝孢子粉中提取的具有一定药理活性的脂质成分。为提高灵芝孢子油稳定性,以大豆分离蛋白和麦芽糊精为壁材,采用喷雾干燥法和冷冻干燥法制备灵芝孢子油微胶囊。通过试验优化了制备工艺条件并比较了两者干燥方式制备微胶囊的理化性质。结果表明:最佳工艺为大豆分离蛋白和麦芽糊精质量比1:1、固形物含量20%、均质压力30MPa、壁材芯材质量比4:1。两种干燥方式微胶囊流动性、溶解性均较好,差异不显著。但两种微胶囊形态差异较大,喷雾干燥微胶囊整体呈球状、表面紧密无裂缝有凹陷,包埋率为90.84%;冷冻干燥微胶囊结构疏松呈片状,表面多孔。因此喷雾干燥法更适合包埋灵芝孢子油。

Preparation of Ganoderma lingzhi spore oil microcapsules

Ganoderma lingzhi spore oil is a kind of health oil with pharmacological activities. Encapsulation of G. lingzhi spore oil by spray-drying and freeze-drying methods using soy isolated protein and malt dextrin as wall material for improving spore oil stability was carried out. Single factor experiment was employed to obtain the optimal conditions. The results showed that the optimal technology for encapsulation was: soy isolated protein and malt dextrin in the ratio of 1:1, solid content of 20%, homogeneous pressure of 30MPa, and core and wall materials in the mass ratio of 4:1. The mobility and solubility of microcapsules prepared by spray-drying and freeze-drying were good and there were no significant difference. However, structures of two kinds of microcapsules were different. Spray-drying microcapsules were spherical with closely-knited surface, no crack but with some dents. Encapsulation efficiency of spray-drying microcapsules was higher, reaching 90.84%. Freeze-drying microcapsules were porous and loose, with flake-like structure. Therefore, spray-drying is a better method to prepare G. lucidum spore oil microcapsules.