猪肉菌落总数检验中不确定度的评定

Uncertainty evaluation of aerobic plate count in pork

中文关键词:  猪肉  菌落总数  不确定度

英文关键词:pork  aerobic bacterial count  uncertainty

中文摘要:

      目的 建立猪肉中菌落总数检测结果的不确定度评定方法。方法 依据JJF 1059.1-2012《测量不确定度评定与表示》和GB4789.2-2010《食品微生物学检验菌落总数测定》以及相关统计学方法, 对样品不确定度进行评定。结果 依据所采用的方法, 对同一样品测定10次菌落总数的扩展不确定度为0.090, k＝2。结论 本研究可以对单个样品的菌落总数检测结果的不确定度作出较好的估计, 可适用于日常工作中菌落计数的不确定度评定。

英文摘要:

      Objective To establish a method of uncertainty evaluation for the detection of aerobic plate count in pork. Methods Based on JJF 1059.1-2012 Evaluation and Expression of Uncertainty in Measurement, GB 4789.2-2010 Microbiological Examination of Food Hygiene-Detection of Aerobic Bacterial Count, and related statistical methods, uncertainty of the samples was evaluated. Results According to the methods, the extended uncertainty was 0.090 with k=2 based on 10 times of determination of the same pork sample under the same condition. Conclusion Evaluation method used in this study can estimate the uncertainty of test results of a single sample, which is suitable to evaluate the uncertainty of colony count in the daily work.