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目的探讨和建立鸡肉中菌落总数检测结果的不确定度评定方法。方法依据《JJF1059-1999测量不确定度评定与表示》和《GB4789.2-2010食品安全国家标准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次菌落总数不确定度为0.0826。结论本文采用的评定方法,可以对单个样品菌落数检测结果不确定度作出估计,比较适用于日常工作中菌落计数的不确定度评定。
Objective To investigate and establish the method for assessing the uncertainty of the detection results of the total number of colonies in chicken meat. Methods According to “JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement” and “GB4789.2-2010 National Food Safety Standard Microbiological Microbiological Determination of the total number of colonies,” and related statistical methods to assess the uncertainty of the sample. Results According to the method used, the total number of 10 colonies with the same sample was determined to be 0.0826. Conclusion The evaluation method adopted in this paper can estimate the uncertainty of the single colony count results and is more suitable for the evaluation of the colony count uncertainty in daily work.