沙棘籽油微胶囊的制备及其性质研究

以沙棘籽油为芯材,采用CAS/MD、OSA/MD、WPI/GA/MD 3种壁材配方,通过喷雾干燥制备沙棘籽油微胶囊,并对微胶囊的性质和微观结构进行研究,用气相色谱法测定微胶囊化前后沙棘籽油脂肪酸含量变化。结果表明:3种配方的微胶囊产品均具有较低的含水量和较高的溶解性,其中以CAS/MD为壁材制备的沙棘籽油微胶囊包埋率最高,微胶囊粒径小,表面光滑,热稳定性良好,壁厚度均一,沙棘籽油在胶囊中分布均匀,喷雾干燥制备过程未对沙棘籽油中的功能性成分产生影响。

Preparation and properties of spray dried sea-buckthorn seed oil microcapsules

The sea-buckthorn seed oil microcapsules were prepared by spray drying technique with three kinds of recipes (CAS/MD, OSA/MD, WPI/GA/MD). The properties and microstructure of sea-buckthorn seed oil microcapsules were studied. Moreover, the content of fatty acid in sea-buckthorn seed oil before and after microencapsula-tion was determined by gas chromatography. The results showed that the microcapsules of the three formulations had low water content and high solubility. The encapsulation efficiency of sea-buckthorn seed oil microcapsule prepared with CAS/MD as wall material was highest. The sea-buckthorn seed oil microcapsules had small particle size, smooth surface, good thermal stability and uniform wall thickness. The distribution of seabuckthorn seed oil in capsules was uniform. The process of spray drying did not affect the functional components in sea-buckthorn seed oil.