Which one of the following glycosidic linkages is found in maltose?

Options

A. `beta-1,4`
B. `alpha-4,1`
C. `beta-4,1`
D. `alpha-1,4`

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Glycosidic Linkage**:
- A glycosidic linkage is a type of covalent bond that connects two carbohydrate molecules. It is formed when a hydroxyl group of one sugar reacts with the anomeric carbon of another sugar, releasing a water molecule.

2. **Identify Maltose**:
- Maltose is a disaccharide, which means it is composed of two monosaccharide units. In the case of maltose, these units are two molecules of glucose.

3. **Determine the Type of Glycosidic Linkage in Maltose**:
- The two glucose molecules in maltose are connected by a specific type of glycosidic linkage. For maltose, this linkage is between the first carbon (C1) of one glucose and the fourth carbon (C4) of the other glucose.

4. **Specify the Configuration of the Linkage**:
- The glucose molecules in maltose are in the alpha configuration. Therefore, the glycosidic linkage in maltose is referred to as an alpha 1,4 glycosidic linkage.

5. **Conclude the Answer**:
- Based on the above information, the glycosidic linkage found in maltose is the alpha 1,4 glycosidic linkage.

**Final Answer**: The glycosidic linkage found in maltose is the alpha 1,4 glycosidic linkage.

---