Explain how vacuum packing increases the shelf life of food items? Justify your answer.

Explanation

**Step-by-Step Solution:**

1. **Understanding Vacuum Packing**: Vacuum packing is a method of packaging that removes air from the package before sealing it. This process creates a vacuum, which means that there is very little to no oxygen inside the package.

2. **Oxygen Exclusion**: The primary function of vacuum packing is to create an oxygen impermeable environment. By removing oxygen, vacuum packing limits the exposure of food items to air.

3. **Reduction of Oxidation**: Oxygen is a key factor in the oxidation process, which can lead to spoilage of food. Oxidation can cause changes in flavor, color, and nutritional value. By reducing the amount of oxygen, vacuum packing slows down these oxidation reactions, helping to preserve the food's quality.

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