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2015-10-25T22:32:24+05:30
Rancidity is prevented by following meths - 1. filling of nitrogen gas in packets of food . 2. Store the food in refrigerator .
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2015-10-25T22:57:54+05:30
Any two methods - 
1. By injecting Nitrogen gas in the food materials.
2. By Vaccum Pumping .
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