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 WHY SUCROSE DOES NOT GIVE MUTA ROTATION ?

Asked by Swankitaraj (student) , on 26/7/12


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EXPERT ANSWER

Mutarotation is defined as the spontaneous change in the specific rotation of the optically active compound. This can occur only if there is a free OH group present on anomeric carbon atom (i.e. there is a free aldehydic or ketonic group present). 

As sucrose is a non reducing sugar (because the OH groups at the both the anomeric carbon atoms are involved in a bond)

it will ot undergo mutarotation. Also it will not give Benedict's test, Fehling's test and tollen's test, which is given readily by most of the aldehydes.

Posted by Kirti Gogiaon 27/7/12

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