oil and fat containing food items are flushed with nitrogen.Why?
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The plastic bags containing oil and fat containing food items are flushed with an unreactive gas nitrogen so as to prevent them fromgetting oxidised and turn rancid.This is because in the presence of oxygen,the fats and oils present in food items get oxidised forming products having unpleasent smelll and taste which turns the food rancid.When air containing oxygen is replaxe by unreactive nitrogen gas,the packed food items do not get spoiled.They remain fresh for a much longer time.
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Oil and fat containing food items flushed with nitrogen because nitrogen acts as an antioxidant and it prevent them from being oxidised or we can say it prevents from rancidity.
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