1.1.99.13 oxidation - 1.1.99.13 oxidation oxidation of the C-3 hydroxyl group of the glucosides and converting them to corresponding 3-ketoglucosides. The Enzyme acts on D-Glucose, D-galactose, D-glycosides and galactosides 1.1.99.13 redox reaction - 1.1.99.13 reduction -