What is food preservation? What are the factors to be kept in mind while preserving food?

Explanation

### Step-by-Step Solution:

1. **Definition of Food Preservation**:
- Food preservation refers to the methods and processes used to treat food materials physically and chemically to prevent spoilage. This ensures that food remains safe and edible for a longer period.

2. **Purpose of Food Preservation**:
- The main goal of food preservation is to prevent the growth of microorganisms and the action of enzymes that can lead to food spoilage. By applying suitable treatments, the shelf life of food can be extended.

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