Salts of sorbic acid and propionic acid are used as

Options

A. antioxidants
B. flvouring agents
C. food preservatives
D. nutritional supplements .

Answer

### Step-by-Step Solution:

1. **Identify the Compounds**: The question refers to salts of sorbic acid and propionic acid. Both of these are organic acids.

2. **Understand the Structures**:
- **Sorbic Acid**: It has a structure characterized by a double bond and a methyl group attached to a carbon chain. Its formula is C6H8O2.
- **Propionic Acid**: This is a simpler structure with three carbon atoms, one of which is part of the carboxylic acid group (-COOH). Its formula is C3H6O2.

3. **Determine Their Uses**: The salts of these acids are primarily used as food preservatives.

4. **Explain the Functionality**:
- These acids inhibit the growth of microorganisms such as yeast and bacteria, which helps in prolonging the shelf life of food products.
- By preventing spoilage, they ensure that food remains safe for consumption over a longer period.

5. **Conclusion**: Therefore, the salts of sorbic acid and propionic acid are used as food preservatives due to their ability to inhibit microbial growth.