Which of the following linkage is found in sucrose :

Options

A. 1–2 glycosidic linkage
B. 1–4 glycosidic linkage
C. 1–3 glycosidic linkage
D. 1–1 glycosidic linkage

Answer

To determine the type of linkage found in sucrose, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Sucrose Composition**:
- Sucrose is a disaccharide composed of two monosaccharides: glucose and fructose.

2. **Understand Glycosidic Linkages**:
- Glycosidic linkages are the bonds formed between monosaccharides during the formation of disaccharides. The numbers in the linkage (e.g., 1,2) refer to the carbon atoms on the monosaccharides that are involved in the bond.

3. **Determine the Linkage in Sucrose**:
- In sucrose, glucose (which is a six-carbon sugar) and fructose (which is a five-carbon sugar) are linked together. Specifically, the linkage occurs between the first carbon of glucose (C1) and the second carbon of fructose (C2).

4. **Identify the Correct Linkage**:
- Based on the above information, the linkage in sucrose is a **1,2 glycosidic linkage**.

5. **Evaluate Other Options**:
- **1,4 glycosidic linkage**: Found in maltose (which consists of two glucose units).
- **1,3 glycosidic linkage**: Not commonly associated with any major disaccharide.
- **1,1 glycosidic linkage**: Found in certain other sugars, but not in sucrose.

6. **Conclusion**:
- The correct answer is **1,2 glycosidic linkage**.

### Final Answer:
The linkage found in sucrose is **1,2 glycosidic linkage**.