DIN Standards Committee Food and Agricultural Products
Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
Abstract
This part of ISO 16634 specifies a method for the determination of the total nitrogen content and the calculation of crude protein content of oilseeds, oilseeds meals, compound feed, feed raw materials, premixtures from plant origin, and excreta. For mineral premixtures and feed additives, the method of determination of the total nitrogen content described in this International Standard can be used. However, for these 2 matrices, the calculation of the protein content described in this international standard do not apply. For excreta, the accuracy of the method has to be checked individually This method, like the Kjeldahl method, does not distinguish between protein nitrogen and non-protein nitrogen. For the calculation of protein content, the conversion factors used is 6,25. This method is not applicable to milk and milk products, for which a method is specified in ISO 14891 | IDF 185[10].
Begin
2024-09-05
WI
00327130
Planned document number
DIN EN ISO 16634-1
Project number
05702757
Responsible national committee
NA 057-03-03 AA - Animal feeding stuffs
Responsible european committee
CEN/TC 327 - Animal feeding stuffs - Methods of sampling and analysis
