离心喷雾法制备橡胶籽油ω-3脂肪酸微胶囊的工艺研究

Study on Atomization Process of Microencapsulation of ω-3 Fatty Acid of the Rubber Seed Oil

采用尿素包合法富集的橡胶籽油ω-3脂肪酸易氧化劣变,为防止产生氧化劣变,以单甘酯:蔗糖酯=1:5为乳化剂,大豆分离蛋白质、酪朊酸钠、麦芽糊精混合物为壁材,采用离心喷雾法制备橡胶籽油ω-3脂肪酸微胶囊,最佳工艺条件为:大豆分离蛋白质、酪朊酸钠和麦芽糊精之比为1:1:1.5,固形物浓度为20%(W/V)的溶液,进料速度20 mL/min,进风温度为160℃,出风温度为80℃。该工艺条件下制备的微胶囊ω-3脂肪酸包埋率达到93.8%,抗氧化性提高4.9倍。

ω-3 fatty acid of the rubber seed oil enriched by urea adduction was easily oxidized. In order to prevent that, the mi- crocapsule of ω-3 fatty acid of the rubber seed oil by spray-drying method was obtained under the rate of monoglycerides and sucrose esters in 1 ： 5 as the emulsifier and the mixture of isolated soy protein,sodium caseinate and maltodextrin as the wall materials .The results showed that microcapsule was obtained in optimum conditions： the mass ratio of isolated soy protein,so- dium caseinate and mahodextrin was 1 ： 1 ： 1.5 at a emulsion concentration of 20% , feed speed is 20 mL/min, inlet air tempera- ture was 160℃, outlet air temperature was 80℃. ω-3 fatty acid encapsulation efficiency of microcapsules prepared by this method reached 93.8%, and its antioxidant activity increased by 4.9 times.