Question:
Which one of the following sugars is/are non-reducing?
Which one of the following sugars is/are non-reducing?
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Non-reducing sugars:
- Sucrose, Trehalose.
- Reducing sugars: Glucose, Fructose, Maltose, Lactose.
- Non-reducing sugars have no free anomeric carbon.
- Sucrose, Trehalose.
- Reducing sugars: Glucose, Fructose, Maltose, Lactose.
- Non-reducing sugars have no free anomeric carbon.
Updated On: Sep 1, 2026
- Only Sucrose
- Only Trehalose
- Both Sucrose and Trehalose
- Neither Sucrose nor Trehalose
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of reducing and non-reducing sugars.
Step 2: Detailed Explanation:
Non-reducing sugars have no free anomeric carbon.
Sucrose: Glucose linked to fructose via \(\alpha, \beta(1 \rightarrow 2)\) bond. Both anomeric carbons are involved.
Trehalose: Two glucose units linked via \(\alpha(1 \rightarrow 1)\) bond. Both anomeric carbons are involved.
Thus, both sucrose and trehalose are non-reducing.
Glucose, fructose, maltose, lactose are reducing sugars.
Thus, the correct answer is both sucrose and trehalose.
Step 3: Final Answer:
Thus, both sucrose and trehalose are non-reducing sugars, which corresponds to option (C).
[0.5cm]
This question tests knowledge of reducing and non-reducing sugars.
Step 2: Detailed Explanation:
Non-reducing sugars have no free anomeric carbon.
Sucrose: Glucose linked to fructose via \(\alpha, \beta(1 \rightarrow 2)\) bond. Both anomeric carbons are involved.
Trehalose: Two glucose units linked via \(\alpha(1 \rightarrow 1)\) bond. Both anomeric carbons are involved.
Thus, both sucrose and trehalose are non-reducing.
Glucose, fructose, maltose, lactose are reducing sugars.
Thus, the correct answer is both sucrose and trehalose.
Step 3: Final Answer:
Thus, both sucrose and trehalose are non-reducing sugars, which corresponds to option (C).
[0.5cm]
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