复凝聚法紫苏油微胶囊的制备及其性能研究

陈琳; 李荣; 张禄捷; 姜子涛

doi:10.13386/j.issn1002-0306.2015.03.040

复凝聚法紫苏油微胶囊的制备及其性能研究

Preparation and performance studies on the microencapsule of perilla oil entrapped with complex coacervation

摘要

摘要: 为了提高紫苏油的稳定性,采用大豆分离蛋白(SPI)/海藻酸钠(SA)复合凝聚法对紫苏油进行了包埋。考察了乳化剂添加量、均质时间、均质速度、壁材质量比、芯壁质量比等因素对微胶囊性质的影响。并采用正交实验确定其最佳工艺为:乳化剂添加量0.1%,均质速度1000r/min,均质时间1min,凝聚反应p H3.5,壁材浓度3%,SPI与SA质量比4∶1,芯壁质量比1∶1。并比较研究了喷雾干燥和冷冻干燥两种干燥工艺所得产品的包埋率、溶解度、贮藏稳定性等指标。结果表明冷冻干燥制备的紫苏油微胶囊产品包埋率高,稳定性更好。

Abstract: In order to improve the stability of perilla oil,perilla oil was encapsuled with soybean protein isolate( SPI)and sodium alginate( SA) by complex coacervation.The influences of the amount of emulsifier,homogeneous time,homogeneous rate,ratio of wall materials,the mass ratio of core material,and wall materials on the properties of microcapsules were determined.The optimization preparation conditions were as follows: the amount of emulsifier0.1%,homogeneous rate 1000 r / min,homogeneous time 1min,coacervation p H3.5,wall material content 3%,the mass ratio of core material and wall material 1∶1,the mass ratio of soybean protein isolate and sodium alginate 4∶1.In addition,encapsulation efficiency,solubility,and storage stability of the microcapsules by both spray- drying and freeze- drying were also studied. The results showed that encapsulation of perilla oil prepared with freeze- drying reflected higher encapsulation efficiency and stability.