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Define rancidity

Rancidity is a very general term and in its most general meaning, it refers to the spoilage of a food in such a way that it becomes undesirable (and usually unsafe) for consumption. When people say that a food has "gone bad," what they're usually talking about is rancidity. Most of the time, but not always, rancidity can change the odors or flavors of a food in such a way that it becomes very unpleasant to smell or taste.
Rancidification is the chemical decomposition of fats, oils and other lipids (this degradation also occurs in mechanical cutting fluids).


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