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Question

Consider the structure of raffinose, a trisaccharide found in sugar beets and a number of higher plants.

Which is/are correct for raffinose?

A
Raffinose is a non-reducing sugar
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B
The linkages present between two pyranose units is in α1,6 glycosidic linkage
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C
Raffinose is hydrolyzed into equal amounts of D-galactose, D-glucose and D-fructose
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D
Raffinose will show mutarotation
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Solution

The correct options are
A Raffinose is a non-reducing sugar
B The linkages present between two pyranose units is in α1,6 glycosidic linkage
C Raffinose is hydrolyzed into equal amounts of D-galactose, D-glucose and D-fructose

Raffinose is a non-reducing sugar because it has no hemiacetal groups; the saccharide residues at both ends are involved in acetal linkages.
Raffinose is hydrolyzed into equal amounts of D-galactose, D-glucose, and D-fructose.


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