摘要
以明胶为壁材,以盐酸硫胺素(VB1)、核黄素(VB2)、盐酸吡哆醇(VB6)、叶酸、烟酰胺的混合物为芯材,采用喷雾干燥工艺,制备水溶性复合维生素微胶囊。通过正交试验,考察壁材芯材比、进风温度、进料流量等工艺参数对微胶囊包埋率及产品得率的影响。结果表明:壁材芯材比对包埋率的影响最显著,进风温度对产品得率的影响比较大;较为适宜的喷雾干燥工艺条件为壁材芯材比10:1、进风温度170℃、进料流量3mL/min。在此条件下制备的水溶性复合维生素微胶囊,少数为球形,大多数表面有凹陷,平均粒径为8.93μm。
Water-soluble vitamin B complex microcapsules were prepared by spray-drying technique using gelatin as wall material and a mixture of thiamine hydrochloride（vitamin B1）,riboflavin（vitamin B2）,pyridoxine hydrochloride（vitamin B6）,folic acid and nicotinamide as core material.The effects of technological parameters including wall material/core material mass ratio,inlet temperature,and feeding rate on microencapsulation efficiency and microcapsule yield were investigated using an orthogonal array design.The microencapsulation efficiency was determined by fluorospectrophotometry.Characteristics microcapsule shape and granule size distribution） of microencapsulated vitamins B were evaluated by scanning electron microscopy（SEM） and laser particle size analyzer.The results showed that the most significant factor affecting microencapsulation efficiency was wall material/core material mass ratio,followed by inlet temperature and feeding rate.Microcapsule yield was significantly by inlet temperature and little affected by feeding rate and wall material/core material mass ratio.The optimal microencapsulation conditions were obtained as follows： wall material/core material mass ratio 10：1,inlet temperature 170 ℃,and feeding rate 3 mL/ min.SEM observations showed that few microcapsules were approximately spherical,and the outer surfaces of most microcapsules had some dents.The mean diameter of microcapsules was 8.93μ m.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2012年第2期7-10,共4页
Food Science
基金
黑龙江省青年科学基金项目(QC08C83)
黑龙江省教育厅科学技术研究项目(11541094)
哈尔滨师范大学科技发展预研项目(11XYS-02)
关键词
微胶囊
复合维生素
喷雾干燥
明胶
制备
microcapsule
vitamin B complex
spray-drying
gelatin
preparation
