In alkaptonuria the urine contains
Hemogentisic acid
Phenylalanine
Ketonis
Acetates
Alkaptonuria is an autosomal recessive Condition. The metabolic defect is deficiency of homogentisate oxidase. this results in excretion of homogentisic acid in urine.Ref: DM Vasudevan - Textbook of Biochemistry for Medical Students, 7th edition, page no: 237
Metabolism of protein and amino acid