Tetrasodium iminodisuccinate Oxygen scavengers in food packaging are used to absorb and remove oxygen from the package to extend the shelf life and maintain the quality of the food. Their key functions include:

1. Preventing Spoilage: By reducing oxygen levels, they inhibit the growth of aerobic bacteria, molds, and yeasts, which can spoil the food.

2. Maintaining Freshness: They help preserve the flavor, texture, and color of the food by preventing oxidation.

3. Extending Shelf Life: Reducing oxygen slows down the degradation processes, allowing the food to stay fresh longer.

4. Preventing Rancidity: In foods high in fats and oils, oxygen scavengers prevent rancidity caused by lipid oxidation.

5. Protecting Nutrients: They help preserve sensitive nutrients and vitamins that can degrade in the presence of oxygen.

Overall, oxygen scavengers are crucial for ensuring food safety, quality, and longevity in packaged products.