Answer
The rate of mutarotation is sufficiently high that, as the enzyme consumes
beta-D-glucose, more alfha-D-glucose is converted to the beta- form and, eventually, all the glucose is oxidized. Glucose oxidase is specific for glucose and does not detect other reducing sugars (such as galactose) that react with Fehling's reagent.
Work Step by Step
That's the advantage glucose oxidase offers over Fehling’s reagent
for the determination of blood glucose.
