摘要
目的:对酸乳中乳酸菌数不确定度的来源进行分析。方法:采用合并样品标准差的方法来评定乳酸菌数的不确定度。结果:评定结果表明酸乳中乳酸菌数检验的不确定度是测量结果对数值±0.039。结论:该批样品乳酸菌数的置信区间范围为6.2×107≤X≤7.5×107 cfu/g。
Objective：The source of measurement uncertainty of lactic acid bacteria in yoghurt was analyzed. Methods： Pooled sample standard deviation was applied to determine the uncertainty of lactic acid bacteria. Re- stilts ： The log value of uncertainty of lactic acid bacteria examination in yoghurt beverage was log value of measuring result ±0. 039. Conclusion： Confidence interval of the measurement result was： 6.2 × 10^7 -7.5 × 10^7 cfu/g.
出处
《中国卫生检验杂志》
北大核心
2012年第8期1864-1865,1868,共3页
Chinese Journal of Health Laboratory Technology
关键词
酸乳
乳酸菌总数
不确定度
评定
Yoghurt
Lactic acid bacteria
Uncertainty
Evaluation
