以猕猴桃籽油为芯材,玉米肽为壁材,吐温-20为乳化剂,采用喷雾干燥法制备微胶囊。优化得到最佳工艺条件为:芯材与壁材配比1∶2(质量比),固形物浓度(质量分数)15%,喷雾干燥温度160 ℃,高速乳化剪切转速6 000 r/min。在最佳工艺条件下,猕猴桃籽油微胶囊包埋率为94.06%。对微胶囊产品进行了理化性质、电镜、红外光谱分析和稳定性研究,表明产品具有良好的溶解性和贮存稳定性。
Kiwi seed oil microcapsules was prepared by spray drying with kiwi seed oil as core material, corn peptides as wall material, and Tween-20 as emulsifier. Based on single factor experiment, the optimum process condition was as follows:mass ratio of core material to wall material 1∶2, the concentration of solid content 15%, the air inlet temperature 160 ℃ and the rate of high-speed shear 6 000 r/min. Under these premium conditions, the encapsulation efficiency of kiwi oil was 94.06%.The physical and chemical properties of microcapsules were analyzed, and electron microscope and IR analysis were carried out. The results showed that the microcapsules of kiwi seed oil had good solubility and stabilities.
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