Study on Microcapsulation of Onion Oil with Complex Coacervation and Spray Drying Method

[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 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 as follows: the ratio of Arabic gum 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.

复凝聚法制备葱油香精微胶囊

探讨了以明胶、阿拉伯胶为壁材,用复凝聚法制备葱油香精微胶囊的工艺条件。分析了芯壁质量比、pH值、固化时间对微胶囊成囊效果的影响,制备葱油香精微胶囊的适宜工艺为:芯壁材质量比1∶2;pH值4.15;固化剂为谷氨酰胺转氨酶,用量为明胶质量的25%,固化时间12h。采用喷雾干燥法(进风温度185℃,出风温度80℃,进料温度50℃)可以制备出葱油香精微胶囊粉状产品,产品的含水率为2.87%,包埋率为89.55%。

β-环糊精制备葱油香精微胶囊的工艺研究

文章研究了以β-环糊精为壁材制备葱油香精微胶囊的工艺,考察了制备工艺中芯壁比、β-环糊精浓度、包埋温度、包埋时间对β-环糊精制备葱油香精微胶囊包埋效果的影响,通过实验得到了葱油香精微胶囊的最佳工艺条件,芯壁比1∶10,β-环糊精浓度为15%,包埋温度为50℃,包埋时间为120 min,同时对微胶囊产品进行了初步的质量评定。

响应面法优化葱油香精微胶囊制备工艺的研究

文章以明胶、阿拉伯胶为壁材,采用复合凝聚法对葱油香精进行包埋,以微胶囊包埋率为评价指标,采用响应面分析法优化了影响包埋率的主要因素:壁材浓度、芯壁比和pH值。研究发现,复凝聚法制备葱油香精微胶囊的最佳工艺参数为:壁材浓度为1.82%、芯壁比1∶1.87、pH 4.16。在此基础上,采用喷雾干燥法可以制备出葱油香精微胶囊白色粉状产品,微胶囊粒径大小较为均一,体积平均粒径为65.54μm。

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。

葱油味熟冻贻贝的调味工艺研究

为丰富贻贝的产品形式,改善产品风味,进行葱油味熟冻贻贝的调味工艺研究。贻贝经过挑选、清洗、预煮、调味、真空包装后进行冷冻,确定工艺流程后利用单因素实验对加工过程中的预煮时间和调味液配方进行优化。结果表明,在预煮1min、加糖量2%、加盐量5%、加油量5%、加葱花量1.5%的条件下制得的贻贝产品葱油味浓郁,口感佳。产品经过-18℃冻藏6个月后,感官性状良好,微生物指标符合国家标准。