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The two monosaccharides are joined toget...

The two monosaccharides are joined together by an oxide linkage formed by the loss of a water molecule. Such a linkage between two monosaccharide units through oxygen atom is called glycosidic linkage. In disaccharides, if the reducing groups of monosaccharides i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars, e.g., sucrose. On the other hand, sugars in which these functional groups are free, are called reducing sugars, for example, maltose and lactose. A non reducing disaccharide 'A on hydrolysis with dilute acid gives an equimolar mixture of D-(+)glucose and D-(+)-Fructose.

In the above reaction, reactant 'A' is:

A

Glucose

B

Sucrose

C

Maltose

D

Fructose

Text Solution

Verified by Experts

The correct Answer is:
B
`underset(("sucrose"))underset((A))(C_(12)H_(22) O_(11)) +H_2 O overset(H^(+))to underset("glucose")(C_6 H_(12)O_(6)) + underset("fructose")(C_6 H_(12) O_(6))`
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