Which of the following is used as a preservative to protect processed food ?

Options

A. Sodium tripolyphosphate
B. Saccharin
C. Diclofenac sodium
D. Sod. Metabisulphite

Answer

**Step-by-Step Solution:**

1. **Understanding Preservatives:**
- Preservatives are substances added to food to prevent spoilage caused by microbial action, such as bacteria and fungi. They help extend the shelf life of processed foods.

2. **Analyzing the Options:**
- We have several options to consider:
- **Sodium Tripolyphosphate:** This compound is primarily used in detergents and water purification, not as a food preservative.
- **Saccharine:** An artificial sweetener used to replace sugar in foods, but it does not function as a preservative.
- **Diclofenac Sodium:** This is a pain reliever and is not related to food preservation.
- **Sodium Metabisulfite:** This compound is known to be used as a food preservative, particularly in dried fruits and some beverages.

3. **Identifying the Correct Answer:**
- Among the options, **Sodium Metabisulfite** is recognized as a preservative used to protect processed food from spoilage.

4. **Conclusion:**
- The correct answer to the question is **Sodium Metabisulfite**.

**Final Answer:** Sodium Metabisulfite

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