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WHAT IS RANCIDITY? MENTION ANY THREE WAYS TO PREVENT RANCIDITY AND EXPLAIN IT.
Fats and oils in food kept for long time get oxidized and become rancid and taste of  food changes and causes infection on eating This is called rancidity .
 To prevent rancidity antioxidants are added to food containing fats and oils .Rancidity can also be prevented by flushing out oxygen with an inert gas like nitrogen .Keeping food in air tight containers can also help to slow oxidation and to preserve food for a long time .
For example to prevent potato chips from oxidation ,manufacturers  flush out oxygen with nitrogen .


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