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
• B. The linkages present between two pyranose units is in $\alpha -1,6$ glycosidic linkage
• C. Raffinose is hydrolyzed into equal amounts of D-galactose, D-glucose and D-fructose
• D. Raffinose will show mutarotation

Answer 1

Answer: (A), (B), (C)

The correct options are
A Raffinose is a non-reducing sugar
B The linkages present between two pyranose units is in $\alpha -1,6$ 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.