define rancidity and their effects on food,how to prevent food from rancidity
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malnutrition is the disfunction of nutrients
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Rancidity is the oxidation of fats that is caused by hydration (water), oxidation (oxygen), metallic atoms or microbes.
It affects taste and odor, and can have an impact on nutritive value. Two major rancidification pathways are recognized in extruded products. Enzymatic rancidity is catalyzed by the presence of certain enzymes (examples are peroxidases and lipases).
Rancidity can be prevented using the following methods:
- Adding antioxidants (substances which prevent oxidation) to food.
- Storing food in airtight containers to slow the process of rancidification.
- Refrigerating food also helps to slow down rancidification.
- Replacing oxygen in the containers with another gas. For example, to prevent chips from turning rancid, chips manufacturers flush the bags with nitrogen gas.
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