title: Tetrahydro-beta-carbolines in foodstuffs, urine, and milk: physiological implications.
abstract: Tryptophan can react chemically during food processing or physiologically to form 1-methyl-1,2,3,4-tetrahydro-beta-carboline which on nitrosation forms a mutagen(s).
mesh_terms: D000818:Animals; D002243:Carbolines / Q000032:analysis* / Q000652:urine; D005504:Food Analysis; D006801:Humans; D008895:Milk, Human / Q000737:chemistry*
chemical_list: D002243:Carbolines; C009804:tryptoline