Which of the following does not show mutarota | vedclass

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(B) Mutarotation is the change in optical rotation due to the change in equilibrium between two anomers when the corresponding stereocenters interconv

Vedclass · Accepted Answer

Sucrose

Vedclass · Answer

(B) Mutarotation is the change in optical rotation due to the change in equilibrium between two anomers when the corresponding stereocenters interconvert.Reducing sugars,which contain a free hemiacetal or hemiketal group,can undergo mutarotation.$Maltose$,$Mannose$,and $Fructose$ are all reducing sugars and exhibit mutarotation.$Sucrose$ is a non-reducing sugar because the glycosidic bond is formed between the anomeric carbons of both glucose and fructose units ($C_1$ of glucose and $C_2$ of fructose).Since there is no free anomeric hydroxyl group available,the ring cannot open to form the open-chain structure,and therefore,$Sucrose$ does not show mutarotation.

Which of the following does not show mutarotation?

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