What are the functional groups present in the structure of maltose?
Biomolecules · Class 12 · JEE Main Previous Year Question
What are the functional groups present in the structure of maltose?
- a
One acetal and one ketal
- b
One ketal and one hemiketal
- c
Two acetals
- d✓
One acetal and one hemiacetal
One acetal and one hemiacetal
Step 1: Identifying Maltose Linkage — Maltose consists of two glucose units connected by an bond.
Step 2: Functional Group Mapping — The first glucose unit uses its anomeric carbon () in the linkage, forming an acetal. The second glucose unit has a free anomeric carbon (), as a hemiacetal.
Step 3: Conclusion — Therefore, the structure of maltose contains one acetal group and one hemiacetal group.
Key Point: The hemiacetal group is responsible for the reducing properties and mutarotation of maltose.
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