复凝聚喷雾干燥法制备葱油香精微胶囊的工艺研究

目的]优化复凝聚喷雾干燥法制备葱油香精微胶囊的喷雾干燥阶段生产工艺。方法]在前期研究的复凝聚工艺基础上,通过喷雾干燥实现对葱油香精的二次包埋,通过单因素试验,研究了不同壁材组合、壁材间的比例、芯材含量及料液浓度对微胶囊包埋效率及产率的影响,再通过正交优化试验,得到喷雾干燥的最佳工艺条件。结果]复凝聚喷雾干燥法制备葱油香精微胶囊最佳工艺条件为阿拉伯胶和麦芽糊精比例为1∶1,芯材含量25%,料液浓度18%。该条件下的包埋效率达80.7%,产率达95.3%。结论]复凝聚喷雾干燥法制备微胶囊可以增加膜厚,提高芯材物质的稳定性,延长产品的货架期。

Study on Microcapsulation of Onion Oil with Complex Coacervation Spray Drying

Objective] The aim was to study the microcapsulation of onion oil with double place separation-coacevation and spray drying.Method] The effect of processing parameters which included the different wall material combination,the ratio between the wall material,the core material content and and the feed concentration on the efficiency and yield of microencapsulated was evaluated by single factor experiments.Result] Through orthogonal optimization experiments,the optimum condition was fellows: the ratio of gum Arabic and maltodextrin ration was 1∶1,the core content was 25%,feed composition was 18%,and the microencapsulation efficiency and yield can reach 80.7% and 95.3% respectively.Conclusion] The microcapsulaiton of onion oil with complex coacervation spray drying method can increase membrane thickness,improve core stability and prolong shelf life of products.