A reducing sugar is one that reduces another compound and is itself oxidized; that is, the carbonyl carbon of the sugar is oxidized to a carboxyl group. A sugar is classified as a reducing sugar only if it has an open-chain form with an aldehyde group or a free hemiacetal group.

Why is reducing sugar called reducing sugar?

The type of sugar that acts as the reducing agent and can effectively donate electrons to some other molecule by oxidizing it is called reducing sugar.

What is the difference between reducing sugar and non reducing sugar?

Some sugars are simple sugars with a simple structure. They are known as monosaccharides. ... The main difference between reducing and nonreducing sugar is that reducing sugars have free aldehyde or ketone groups whereas nonreducing sugars do not have free aldehyde or ketone groups.