title: Comparison between a spectrophotometric and a high-pressure liquid chromatography method for determining tryptophan in food products.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005504:Food Analysis / Q000379:methods*; D013053:Spectrophotometry / Q000379:methods; D014364:Tryptophan / Q000032:analysis*
chemical_list: D014364:Tryptophan