Comparison of modified automatic Dumas method and the traditional Kjeldahl method for nitrogen determination in infant food

J Assoc Off Anal Chem. Mar-Apr 1987;70(2):227-9.


This study compares 2 methods for determining nitrogen and protein in various types of infant food: the Kjeldahl method, developed in 1883, which is time consuming and labor intensive, and a newer, automatic method, based on the Dumas method. In each category of infant food considered, the results obtained from both methods are shown to be comparable; however, the modified Dumas method is quicker, easier, and does not pollute the laboratory environment.

Publication types

  • Comparative Study

MeSH terms

  • Autoanalysis
  • Dietary Proteins / analysis
  • Indicators and Reagents
  • Infant Food / analysis*
  • Nitrogen / analysis*


  • Dietary Proteins
  • Indicators and Reagents
  • Nitrogen