复凝聚法制备明胶/阿拉伯胶含油微胶囊工艺过程的研究

研究了复凝聚法制备含油微胶囊的工艺过程。以大豆油为囊芯材料,阿拉伯胶与明胶为璧材,研究了溶液pH值,反应温度,反应时间,壁材浓度,搅拌条件等对微胶囊产品质量的影响。发现搅拌速度对微胶囊的粒径大小和分布影响很大。最佳工艺条件为:明胶与阿拉伯胶质量比为1,浓度都为2%,pH值为4.0~4.5,搅拌速度为1500 r/min,反应温度为55℃,凝聚时间为15~20min,固化温度为10℃,固化时间60 min。

Study of the Process of Complex Coacervation Encapsulation for Oil Core Materials

The process of complex coacervation encapsulation for oil core materials was studied.Bean oil was selected as the core material and the gelatin and Arabic gum as coating materials.The factors that affect the process,such as p H value,reaction temperature,reaction time,reaction concentration and stirring speed,were investigated.The results showed that the optimal conditions were as follows.emulsifying 2%of Arabic gum and 2%of gelatin,condensing at pH 4.0～4.5 for 15～20 min,stirring with a speed of 1500 r/min,and solidifying at 10℃ for 60 min.The stirring speed exerted an important influence on the appearance and particle size distribution of the products.