摘要
目的对质控样中菌落总数测定结果进行不确定度评定。方法菌落总数测定依据GB4789.2-2016《食品安全国家标准食品微生物学检验菌落总数测定》进行测定和结果判断,再根据JJF 1059.1-2012《测量不确定度评定与表示》的规定,对测定过程中引入的不确定度分量进行评定,然后采用合成的方法来计算和评定菌落总数的不确定度。结果扩展不确定度为0.08,结果对数值取值区间为(3.85±0.08),取反对数取值区间则为(5900,8500)。结论本方法可有效评定菌落总数的不确定度。
Objective To evaluate the uncertainty of the total number of colonies in the quality control sample.Methods The aerobic plate count was determinated and judged according to GB 4789.2-2016"National Food Safety Standard for Microbiological Inspection of Food".The uncertainty components introduced in the determination process were evaluated according to JJF 1059.1-2012"Evaluation and Representation of Uncertainty in Measurement".Then,the uncertainty of aerobic plate count was calculated and evaluated by a synthetic method.Results The extended uncertainty was 0.08,and the value range of the corresponding value was(3.85±0.08),and the value range of the opposite value was(5900,8500).Conclusion This method is effective to evaluate the uncertainty of aerobic plate count.
作者
韦云
杨丹婷
苏妙贞
周露
WEI Yun;YANG Dan-Ting;SU Miao-Zhen;ZHOU Lu(Guangdong Institute of Food Inspction,Guangzhou 510435,China)
出处
《食品安全质量检测学报》
CAS
2020年第1期175-178,共4页
Journal of Food Safety and Quality
基金
广东省食品药品监督管理局科技创新项目(2018ZDZ07).
关键词
菌落总数
不确定度
评定
aerobic plate count
uncertainty
evaluation
