A) \[\text{ }\!\!\alpha\!\!\text{ -}\]D-galactopyranose and \[\text{ }\!\!\alpha\!\!\text{ -}\]D-glucopyranose
B) \[\text{ }\!\!\alpha\!\!\text{ -}\]D-glucopyranose and \[\text{ }\!\!\beta\!\!\text{ -}\]D-fructofuranose
C) \[\text{ }\!\!\beta\!\!\text{ -}\]D-glucopyranose and \[\text{ }\!\!\alpha\!\!\text{ -}\]D-fructofuranose
D) \[\text{ }\!\!\alpha\!\!\text{ -}\]D-glucopyranose and \[\text{ }\!\!\beta\!\!\text{ -}\]D-fructopyranose
Correct Answer: A
Solution :
[a] Sucrose is composed of a-D-glucopyranose and a fructofuranose units which are joined by ,glycoside linkage between C-l of the glucose unit and C-2 of the fructose unit. |
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