摘要
添加益生菌的婴幼儿配方奶粉,贮藏于常温及30,40,50,60℃高温培养条件下,以益生菌最佳贮存温度-18℃作对照,分别不同时间测定奶粉中益生菌活菌数量。研究表明,益生菌在(-18±2)℃低温保存下、在常温下30,40,50℃存放,其活菌数均大于1.0×106CFU/g,均符合国标要求。益生菌奶粉在60℃条件下保存菌数很快由存放开始的2.4×107CFU/g下降为第3天的3.1×105CFU/g,第5天后发生美拉德褐变反应。常温试验结果显示,含有益生菌的婴幼儿奶粉可以在常温条件下良好储存。
Added probiotic infant formula milk powder are stored at room temperature and 30,40,50,60 ℃,respectively,and at the best storage temperature of probiotics（-18 ℃） as the control.The data of the number of viable cells of probiotics are measured at different temperatures in infant formula.Results show that probiotics in（-18±2） ℃ cryopreservation,stored at 30,40,50 ℃,the numbers of viable cells are more than 1.0×106CFU/g,which have arrived the national standards of China.Stored at 60 ℃ for 3 d,the number of viable cells decrease from 2.4×107to 3.1×105CFU/g,and the samples have present brown color on the fifth day.Normal temperature test results show that infant formula can be stored preferably at room temperature conditions.
出处
《农产品加工（下）》
2013年第9期70-71,75,共3页
Farm Products Processing
关键词
婴幼儿奶粉
益生菌
常温
活菌数
变化
infant formula
probiotics
normal temperature
the number of viable cell
changes
