比较不同的凯氏定氮片测定牛奶中氮和蛋白质
凯氏定氮法测定牛奶中氮和蛋白质不同凯氏定氮片的比较
BUCHI 提供不同类型的催化剂片,用于执行标准的凯氏定氮法。《钛》凯氏定氮片含有硫酸铜、氧化钛和硫酸钾。《密苏里》凯氏定氮片含有硫酸铜和硫酸钾,《ECO》凯氏定氮片含有极低含量的硫酸铜和硫酸钾 [1]。在此简单注释中,牛奶被选为样品材料。实验的主要重点是确定不同催化剂的催化反应,并更多地了解它们对总消解时间和结果的影响。要查看所有结果,请参阅应用注释 078/2012。
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Nitrogen and Protein Determination in Animal Feed according to the Kjeldahl method
The determination of protein in feed is a routine procedure for quality assurance and labelling. A simple and fast method for protein determination in feed products according to the ISO 5983-2:2009 and AOAC 954.01 regulations is introduced below. The sample is digested with sulfuric acid and Kjeldahl Tablets Titanium using the digest Automat K-438, followed by distillation and titration with the KjelMaster K-375 with KjelSampler K-376.