摘要
为了研究喷雾干燥后双歧杆菌的存活情况 ,选择了三种B .longum和两种B .infantis菌与分别含有明胶、树胶和可溶性淀粉的载体一起喷雾干燥。结果发现 ,喷雾干燥后双歧杆菌的存活因其种类不同而不同 ,同时很大程度上也取决于所用载体。比较不同的载体浓度对存活的影响 ,发现双歧杆菌在与 10 %的明胶、树胶或可溶性淀粉喷雾干燥后其存活率最高。经 5 0℃干燥后双歧杆菌表现最大存活 ,温度升高则失活升高。然而温度升高引起的失活程度因所用载体不同而不同 ,采用可溶性淀粉失活程度最大 ,采用脱脂乳则最小。
To investigate the survival of bifidobacteria after spray-drying, bifidobacterium infantis CCRC 14633, B. infantis CCRC 14661, B. longum ATCC 15708, B. longum CCRC 14634 and B. longum B6 were first spray-dried with different carrier media including: 10%(w/w) gelatin, gum Arabic and soluble starch. B. infantis CCRC 14633 and B. longum were determined in skim milk. It was found that survival of bifidobacteria after spry-drying varied with strains and was highly dependent on the carriers used. Comparisons of the effect of carrier concentrations revealed that spray-drying at 10%(w/w) gelatin, gum Arabic or soluble starch resulted in the highest survival of bifidobacteria. Bifidobacteria showed the highest survival after drying at 50 ℃ . Elevation of outlet-air temperature caused increased inactivation of bifidobacteria. However, the inactivation caused by increased outlet-air temperature varied with the carrier used, with the greatest reduction observed using soluble starch and the least with skim milk.
出处
《食品与机械》
CSCD
2004年第3期11-12,22,共3页
Food and Machinery
