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Question
Oil and fat containing food items are flushed with nitrogen. Why?
Solution 1
The main purpose of flushing nitrogen into food packets that contain oil and fat is to prevent rancidity, which occurs when the oil or fat reacts with oxygen, releasing an unpleasant smell and taste. Therefore, flushing nitrogen creates an unreactive environment, thus preventing rancidity.
Solution 2
Oil and fat-containing food items are flushed with nitrogen because nitrogen acts as an antioxidant and prevents them from being oxidised.
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RELATED QUESTIONS
Explain the term Rancidity.
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Fill in the following blank with suitable word:
Anti-oxidants are often added to fat containing foods to prevent .............. due to oxidation.
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If edible oil is left aside for a long time, it will get rancid.
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