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What is AN 050 2010 Non Protein Nitrogen Determination Milk about?

This document outlines a method for determining non protein nitrogen (NPN) in milk using the Kjeldahl method with the SpeedDigester K-436/K-439 and KjelFlex K-360. The procedure involves precipitating proteins with trichloroacetic acid, digesting the filtrate with sulfuric acid, and distilling and titrating the sample. Results indicate reliable and reproducible NPN content measurements with low relative standard deviations, confirming the method

Author

Alfa Arnanto

Language

EN