【摘要】 以维生素E为芯材、玉米醇溶蛋白（Zein）为壁材、醇醚糖苷（AEG）为乳化剂、甘油（VG）为助乳化剂，通过正负相凝聚法制备维生素E-玉米醇溶蛋白纳米胶囊（VE/Zein-NC）。以包封效率和粒径为指标，通过单因素试验优化制备工艺，并研究纳米胶囊抗氧化能力。结果表明，VE/Zein-NC的最佳制备工艺为：玉米醇溶蛋白质量浓度为2.5 mg/m L、乙醇质量分数为75%、正负相体积比为1∶2。此条件所制备的VE纳米胶囊的包封率达到85.37%±0.46%,VE/Zein-NC平均粒径为305.49 nm，多分散系数为0.038，分散性良好，水分含量低，储存30 d后抗氧化能力可达未经处理VE的2.47倍。更多还原

【Abstract】 Vitamin E-zein nanocapsules(VE/Zein-NC)were prepared by positive-negative phase coalescence method using vitamin E as the core material, zein as the wall material, alcohol ether glycoside(AEG) as the emulsifying agent, and glycerol(VG) as the coemulsifying agent. The preparation process was optimized by single-factor test using encapsulation efficiency and particle size as indicators, and the antioxidant capacity of the nanocapsules was investigated. The results showed that the optimal preparation process of VE/Zein-NC was 2.5 mg/m L concentration of zein, 75% concentration of ethanol, and 1:2 volume ratio of positive and negative phases.The encapsulation efficiency of VE nanocapsules prepared under this condition reached 85.37% ± 0.46%, and the average particle size of VE/Zein-NC was 305.49 nm, with a polydispersity index of 0.038, which was well dispersed. The nanocapsule has a low water content. The antioxidant capacity could reach 2.47 times of untreated VE after 30 days of storage.更多还原