Glycosidic linkage in maltose is

Options

A. `alpha4to 1`
B. `beta4to1`
C. `alpha1to4`
D. `beta1to4`

Answer

To determine the glycosidic linkage in maltose, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Composition of Maltose**:
Maltose is a disaccharide composed of two glucose molecules.

2. **Understand Glycosidic Linkage**:
A glycosidic linkage is a type of covalent bond that connects two monosaccharides. It is formed between the hydroxyl (OH) group of one sugar and the anomeric carbon of another sugar, releasing a molecule of water (condensation reaction).

3. **Determine the Structure of Glucose**:
Glucose can exist in a cyclic form. In maltose, both glucose units are in their alpha form, which means the hydroxyl group (-OH) on the anomeric carbon (carbon 1) is positioned below the plane of the ring.

4. **Identify the Carbons Involved in the Linkage**:
In maltose, the glycosidic bond is formed between the anomeric carbon (C1) of the first glucose and the C4 of the second glucose molecule.

5. **Specify the Type of Linkage**:
Since both glucose units are in the alpha form, the linkage is specifically referred to as an alpha-1,4 glycosidic linkage.

6. **Conclusion**:
Therefore, the glycosidic linkage in maltose is an **alpha-1,4 glycosidic linkage**.

### Final Answer:
The glycosidic linkage in maltose is an **alpha-1,4 glycosidic linkage**.

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