Oil and fat containing food items are flushed with nitrogen. Why?

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Solution

Nitrogen is an inert gas and does not easily react with these substances. On the other hand, oxygen reacts with food substances and makes them rancid. Thus, bags used in packing food items are flushed with nitrogen gas to remove oxygen inside the pack. When oxygen is not present inside the pack, rancidity of oil and fat containing food items is avoided.

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Explain why, food products containing fats and oils (like potato chips) are packaged in nitrogen.

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