Question

The reducing sugar among the following is:
A. Sucrose
B. Cellulose
C. Starch
D. Glucose

Answer 1

Hint: Reducing sugar is the sugar that has an OH group attached to the anomeric carbon so that they can reduce the other compounds. Generally, it is found that all monosaccharides are reducing sugars. Whereas, a disaccharide can be reducing or non-reducing sugar.

Complete step by step solution:
- Glucose is a non-reducing sugar, that is having molecular formula ${{C}_{6}}{{H}_{12}}{{O}_{6}}$. It is basically a simple sugar having six carbon atoms and one aldehyde group, which is a monosaccharide.
- It is also called dextrose, it can open in two forms, that is a ring or open-chain structure. D-glucose is the form of glucose that is naturally occurring.
- It is found that glucose can occur in either liquid or solid form and is also soluble in water and acetic acid.
- We can see the structure of glucose:

- We can also see that it is a monomer of many larger compounds like starch, cellulose and carbohydrates.
- Glucose has many uses. We can see that it is used in the treatment of low blood sugar. And it is also given to patients who are sick and cannot eat because it provides carbohydrate calories.

Hence, we can say that the correct option is (D), that is the reducing sugar is glucose.

Note: It is found that having too much glucose in the blood for a long time can cause serious health problems if it is treated. Hyperglycaemia is found to damage the vessels that can supply the blood to various organs, and this can increase the risk of kidney disease, heart disease and nerve problems.