【摘要】 以乙基纤维素/丙二醇单硬脂酸酯/单硬脂酸甘油酯为壁材,采用流化床喷涂法制备硫酸亚铁微胶囊。结果表明:最佳工艺条件为芯材粒径200-300目,芯壁质量比8:1.5,包覆时间2h,微胶囊化效率>90%。产品平均粒径为400-450μm,保留率高于90%。食盐强化结果显示,微胶囊化硫酸亚铁能够显著降低对食盐体系颜色的影响。更多还原

【Abstract】 In this study,microencapsulated ferrous sulfate was prepared by fluidized bed.The optimal technical parameters were confirmed as follows:the size of the core material was in the range of 200-300 mesh,the weight ratio of core to wall material was 8:1.5,and the time for coating was two hours.The encapsulation efficiency of the products was higher than 90%,and the average particle size was in the range of 400-450 μm with retention rate above 90%.In addition,the stability of microencapsulated ferrous sulfate fortified salt was investigated.Compared with ferrous sulfate fortified salt,microencapsulated ferrous sulfate significantly reduced the influence of the color of salt after storage for 25 days.更多还原