Question

which type of glycosidic bond and mono saccharides are present in sucrose a. ??-d-fructofuranosyl (1-2) ??-d-glucopyranoside b. ??-d-glucopyranosyl (1-2) ??-d-fructofuranoside c. ??-d-glucopyranosyl (2 -1) ??-d-fructofuranoside d. ??-d-fructofuranosyl ((2 -1) ??-d-glucopyranoside

Answer 1

Glycosidic bonds are labeled α or β

This depends on the anomeric configuration of the C₁ involved in the glycosisic bond.

Sucrose has a (1,2) glycosidic bond.

The systematic name is :

α - d - glucopyranosyl β-d - fructofuranoside.

The correct answer is b