The Dumas method, also known as combustion method, is a primary method of determination of Nitrogen and Protein ensuring fast results, ease-of-use and safety. However, it is considered an alternative to the classical Kjeldahl method. In fact, both of the methods are validated by different international organizations: Kjeldahl is officially recognized by AOAC, EPA, DIN, ISO, etc., whilst Dumas by AOAC, AACC, ISO, DIN, ASBC, AOCS, OIV, etc. Nevertheless, in some countries the local guidelines recommend one method rather than the other.
This is the reason why many decision-makers and users are undecided between the two methods and between following the local guidelines or the International Standards.
The growing trend of Dumas method
Stringent standards on the composition of food and feed are being applied in ever-widening markets. Precise analysis of these components is now essential to any company wishing to market its products, particularly on an international basis.
Since 2011VELP Scientifica has introduced nitrogen analyzers based upon the Dumas nitrogen determination. Unlike the commonly used Kjeldahl method, Dumas method, also known as elemental analysis or combustion method, detects the total nitrogen content, not only that which is contained within proteins.