Micro-Kjeldahl approach in dairy products
KjelDigester K-449 and KjelMaster K-375 with KjelSampler K-377: Total Kjeldahl Nitrogen (TKN) and protein content in dairy products according to micro-Kjeldahl method
An easy and reliable method for the determination of the TKN content in dairy products is introduced. The samples are digested using the block digester KjelDigester K-449 with 300 mL Kjeldahl tubes following a "micro" approach, reducing used chemicals and consumables significantly and thus generating both ecological and economic advantages. A steam distillation protocol followed by a potentiometric boric acid titration is performed with the KjelMaste K-375 with KjelSampler K-376/K-377 in accordance with e.g. AOAC 991.20 and ISO 8968-2.
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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.