离心喷雾法制备橡胶籽油ω-3脂肪酸微胶囊的工艺研究

摘要

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.%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20mL／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。