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If a packaged food item contains a large amount of oil or fat, which method is most suitable to prevent rancidity?

Answer and explanation

Correct answer: Flushing with nitrogen gas and sealing airtight

Oils and fats can undergo oxidation in the presence of oxygen, causing rancidity and producing an unpleasant smell and taste. Flushing the packet with nitrogen and sealing it airtight greatly reduces contact with oxygen, so rancidity is slowed down. In contrast, filling the packet with oxygen or keeping it in open air increases oxidation.

Related tags

ScienceClass10Chemical ReactionsRancidityOxidationFood PreservationNitrogen Packaging

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