title: Microdetermination of tryptophan in compounded poultry rations.
abstract: A reliable method for the microdetermination of tryptophan in compounded poultry rations has been developed. Samples are hydrolyzed with Ba (OH)2, and the hydrolysate is passed through a Dowex-50 column to remove the salts and soluble carbohydrates. N-1-Naphthylethylenediamine is added to the purified feed hydrolysate, and color is read at 530 nm.
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D008832:Microchemistry; D011200:Poultry; D014364:Tryptophan / Q000032:analysis*
chemical_list: D014364:Tryptophan