BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Fructose is considered as reducing sugar through the following points: A sugar considered as reducing which can be can be oxidized by a weak oxidizing agent such as Tollen’s reagent (capable of oxidizing aldehydes, not alcohol) under a basic aqueous solution.

Detailed explanation-2: -A non-reducing sugar is a carbohydrate that is not oxidized by a weak oxidizing agent (an oxidizing agent that oxidizes aldehydes but not alcohols, such as the Tollen’s reagent) in basic aqueous solution.

Detailed explanation-3: -They are called ‘reducing sugars’ because the presence of the aldehyde group makes them undergo oxidation readily to form carboxylic acid and in the process the reactive reagents are reduced easily.

Detailed explanation-4: -Hence, glucose is not an oxidizing agent.