摘要
以阿拉伯胶、β-环糊精、可溶性淀粉、明胶、脱脂奶粉为壁材,根据正交试验确定微生态菌株嗜酸乳杆菌细胞微胶囊化的最佳真空喷雾干燥进风温度、壁材浓度和芯材浓度,并对其粒子直径进行分析。结果表明,β-环糊精与阿拉伯胶以9∶1配比为理想壁材,喷雾干燥进风温度170℃、壁材浓度20%和芯材浓度6%为最佳组合,活菌数达108cfu/g以上,微胶囊粒子直径平均为20μm。
Using gum acacia, β-cyclodextrin, soluble starch powder, gelatin and dry skim milk as wall-material,the best technical conditions for vacuum spray drying of micro-encapsulation of Lactobacillus acidophilus were determined according to orthogonal experiment, and the diameter and distribution of microcapsules were analyzed. The results show that the best wall-material is the mixture of β-cyclodextrin and gum acacia（9 ： 1）, and the optimum concentrations of wall-material and core-material are 20% and 6%, respectively, inlet air temperature is 170℃. Under the optimized conditions, the survival bacterium number is over 10^8 cfu/g, and the average diameter of microcapsules is 20μm.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2006年第5期161-164,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
河南省高校青年骨干教师资助计划项目
河南省高校杰出科研人才创新工程项目(2004KYCX009)
关键词
嗜酸乳杆菌
真空喷雾干燥
微胶囊化
活菌数
Lactobacillus acidophilus
vacuum spray drying
micro-encapsulation
survival bacterium number
