Which one is not added in detergents

Options

A. Amylase
B. Protease
C. Peptidase
D. Cellulase.

Answer

To determine which enzyme is not added to detergents, we will analyze the options provided: amylase, protease, peptidase, and cellulase.

### Step-by-Step Solution:

1. **Understanding the Role of Enzymes in Detergents:**
- Enzymes are biological catalysts that help in breaking down various types of stains and dirt on fabrics. Different enzymes target different types of stains.

2. **Analyzing Each Option:**
- **Amylase:** This enzyme is responsible for breaking down starches into sugars. It is commonly added to detergents to help remove starchy stains (e.g., food stains).
- **Protease:** This enzyme breaks down proteins into smaller peptides or amino acids. It is effective in removing protein-based stains like blood or egg.
- **Cellulase:** This enzyme helps in breaking down cellulose, which is a component of plant cell walls. It is used in detergents to improve the overall cleaning of fabrics and maintain their quality.
- **Peptidase:** This enzyme also hydrolyzes proteins but is not typically used in detergents. It is more specialized for breaking down peptides into amino acids rather than removing stains.

3. **Conclusion:**
- Among the given options, peptidase is not added to detergents. Therefore, the correct answer is **peptidase**.

### Final Answer:
Peptidase is not added in detergents.