摘要
为了掩盖维生素的不良滋、气味,提高其稳定性,该文分别以黄原胶、阿拉伯胶、瓜尔豆胶、卡拉胶、明胶等为壁材,以盐酸硫胺素(VB1)、核黄素(VB2)、盐酸吡哆醇(VB6)、叶酸和烟酰胺的混合物为芯材,采用冷冻干燥工艺,结合粉碎、筛分,制备复合维生素微胶囊,考察了壁材/芯材比、壁材浓度对微胶囊中维生素荷载量、包埋率和稳定性的影响。结果表明:以黄原胶、阿拉伯胶或瓜尔豆胶为壁材时,维生素的包埋率高且稳定性好,是较适宜的壁材;随着壁材/芯材比的增加,维生素的包埋率增加,稳定性提高,而荷载量降低,合适的壁材芯材比为5︰1(m/m);壁材浓度过高对制备不利,过低则导致维生素包埋率低,合适的壁材浓度为1︰50(m/V)。在上述制备条件下,微胶囊中维生素的荷载量在0.2 g/g以上,包埋率达95%以上,稳定性明显提高。
In order to mask off flavor and enhance stability of vitamins, compound vitamin microcapsules were prepared by freeze-drying, comminuting and sieving. The mixture of thiamine hydrochloride, riboflavin, pyridoxine hydrochloride, folic acid and nicotinamide was used as core material. Xanthan gum, arabic gum, guar gum, carrageen gum and gelatin were selected as wall material, respectively. The influences of ratio of wall material to core material and concentration of wall material on the loading, encapsulation efficiency and stability of vitamins were investigated. The encapsulation efficiency and stability of vitamins indicate that xanthan gum, arabic gum or guar gum is suitable wall material. As the ratio of wall material to core material increases, the encapsulation efficiency and stability of vitamins increase while the loading of vitamins decreases. The optimum ratio is 5 ： 1 （m/m）. The optimum concentration of wall material is 1 ： 50 （m/V）. Higher concentration of wall material is unfavourable to the preparation, and lower concentration is unfavourable to the encapsulation efficiency of vitamins. Under optimum preparation conditions, the loading is more than 0.2 g/g, the encapsulation efficiency of vitamins is more than 95%, and the stability of vitamins within microcapsules is enhanced obviously.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2008年第1期303-306,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
黑龙江省研究生创新基金项目(YJSCX2006-53HLJ)
哈尔滨市科技创新人才研究专项资金项目(2006RFXXN003)
乳品科学教育部重点实验室主任基金项目(KLDS2006-01B)
关键词
微胶囊
复合维生素
壁材
稳定性
microcapsule
compound vitamin
wall material
stability
