________ is important method employed in industries to increase the shelf life of food. The absence of air ensures a prolonged life of the food product.

Options

A. Vaccum packing
B. Pasteurization
C. Preservatives
D. Storing

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for a method used in industries to increase the shelf life of food by removing air from the packaging.

2. **Identifying the Key Concept**: The key concept here is the removal of air, which prevents food spoilage. Air contains oxygen and moisture, both of which can lead to food degradation.

3. **Defining the Method**: The method that involves the absence of air is known as "vacuum packing." In vacuum packing, food is sealed in a package from which air has been removed.

4. **Explaining the Benefits**:
- **Prevention of Chemical Reactions**: By removing air, the food is less likely to undergo chemical reactions that can spoil it.
- **Inhibition of Aerobic Microbes**: Aerobic microbes, which require oxygen to survive, are also eliminated, further extending the food's shelf life.

5. **Conclusion**: Therefore, the answer to the question is "vacuum packing," as it is an important method employed in industries to increase the shelf life of food by ensuring the absence of air.

**Final Answer**: Vacuum packing

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