凯氏定氮仪法测定腐竹中蛋白质含量的不确定度评定  

Evaluation of Uncertainty in the Determination of Protein Content in Yuba by Automatic Kjeldahl Nitrogen Determination Instrument

作　　者：尤加庆 YOU Jiaqing(Xiamen Hongyi Testing Co.,Ltd.,Xiamen 361000,China)

机构地区：[1]厦门泓益检测有限公司,福建厦门361000

出　　处：《食品安全导刊》2024年第16期121-123,127,共4页China Food Safety Magazine

摘　　要：运用自动凯氏定氮仪法对腐竹中蛋白质含量进行检测,对检测过程的不确定度进行分析评定,以进一步完善检测过程的质量控制。结果表明,腐竹中蛋白质含量为43.2 g/100 g时,扩展不确定度为1.6 g/100 g(在95%置信区间下,k=2)。由仪器引入的不确定度和检测过程重复性引入的不确定度对检测不确定度的影响较大。The automatic Kjeldahl nitrogen analyzer method was used to detect the protein content in yuba,and the uncertainty of the detection process was analyzed and evaluated to further improve the quality control of the detection process.The results show that when the protein content in yuba is 43.2 g/100 g,the expanded uncertainty is 1.6 g/100 g(at 95%confidence interval,k=2).The uncertainty introduced by the instrument and the uncertainty introduced by the repeatability of the detection process have a significant impact on the detection uncertainty.

关 键 词：自动凯氏定氮法 蛋白质 不确定度 腐竹 

分 类 号：TS214.2[轻工技术与工程—粮食、油脂及植物蛋白工程] O657[轻工技术与工程—食品科学与工程]