Essential fructosuria is due to deficiency of: (A) b-galactosidase, (B) Aldolase-B, (C) Fructokinase, (D) Aldose reductase
Answer is C. Fructosuria is a benign metabolic defect due to deficiency of fructokinase. There is no abnormality in other than excretion of fructose in urine.Ref: DM Vasudevan, 7th edition, page no: 138