PMID: 1249029Jan 1, 1976

Collaborative study of an automated method for the determination of crude protein in animal feeds

Journal - Association of Official Analytical Chemists
R J Noel

Abstract

An automated macro Kjeldahl instrument determines per cent protein at the rate of 20 samples/hr. The methodology involved is similar to the present official final action Kjeldahl method, sec. 7.016. The 2 methods were compared in a collaborative study. Sixteen animal feeds, 4 meats, tryptophan, ammonium dihydrogen phosphate NBS standard, and ammonium sulfate primary standard were analyzed by the participating laboratories. The data were agreement between the 2 methods. The automated method has been adopted as official first action for the determination of crude protein in feeds, plants, and cereal foods.

Related Concepts

Ammonium Sulfate
Animal Feed (Substance)
Autoanalysis Procedure
Triticale
Plant Proteins

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