摘要
研究了影响益生菌奶粉加速实验模型建立的条件因素,测定了不同温度、不同水分活度奶粉基料及不同光照条件下的活菌数变化,并验证了加速实验的最佳实验条件。结果表明:贮存温度和奶粉基料水分活度对益生菌奶粉稳定性有显著影响;贮存温度为37℃,贮存期1个月为加速实验的理想条件;奶粉基料水分活度与益生菌菌粉水活度越接近时产品的稳定性越强。
This paper investigated conditional factors which were established model of accelerated test of probiotic milk powder. The changes of the living number of probiotic in milk powder were determined under the conditions of different temperature, different water activities of milk powder-based materials and different light conditions. The best condition of accelerated test was verified. The results showed that storage temperature and water activity of used milk powder influenced the stability of probiotic milk, the optimum conditions of shelf-life accelerated test were storage temperature 37 ℃, keeping 1 month. The stability of products will be stabilization when the water activity of milk powder close to water activity of probiotic.
出处
《食品科技》
CAS
北大核心
2009年第11期39-43,共5页
Food Science and Technology
关键词
益生菌奶粉
水分活度
货架期
加速实验
probiotic milk powder
water activity
shelf-life
accelerated testing
