GUM法评定菊粉菌落总数的测量不确定度
Measurement Uncertainty for Evaluating Total Number of Bacterial Colony in Inulin by Using GUM Method
祖新 1刘煜 1李羽翡 1仝伟建 1杨晓楠1
作者信息
- 1. 甘肃省食品检验研究院,甘肃兰州730030
- 折叠
摘要
[目的]采用JJF1059.1-2012《测量不确定度评定与表示》规定的GUM法对实验室菊粉菌落总数的测量进行不确定度评定.[方法]依据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》来进行测定和结果判定,结合对测定过程中引入的不确定度分量进行评定,最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]菊粉菌落总数为1.5×104 CFU/g,扩展不确定度为0.4×104.[结论]此方法可用于对菊粉样品的菌落总数进行不确定度评定,适用于复现检测条件下菊粉及其他粉状食品菌落总数不确定度的评定.
Abstract
[Objective] To evaluate the uncertainty in the measurement of total number of bacterial colony in inulin in the laboratory by the method of GUM specified in JJF1059.1-2012 " Evaluation and expression of uncertainty in measurement ".[Method] The determination and results of the judgment were directed by GB 4789.2-2010 "National food safety standard:Food microbiological examination of total number of bacterial colony".The uncertainty components were introduced in the experiment.Finally,synthetic method was used to calculate and assess the uncertainty of total number of bacterial colony.[Result] Total number of bacterial colony in inulin was 1.5 × 104 CFU/g,and the expanded uncertainty was 0.4 × 104.[Conclusion] This method can be used in the uncertainty assessment of total number of bacterial colony in inulin,and it is also suitable for evaluating the uncertainty in the measurement of total number of bacterial colony in inulin or other powdery food under repetition test conditions.
关键词
GUM法/菊粉/菌落总数/不确定度Key words
GUM method/Inulin/Total number of bacterial colony/Uncertainty evaluation引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据