The "air" that puffs up a potato chip bag is actually what element
Asked by wiki @ in Social Studies viewed by 321 People
Answered by wiki @
That's not just any ordinary air puffing up potato chip bags: It's nitrogen. Oxygen can cause the potatoes to spoil and the oil to go rancid, and the humidity found in ambient air makes the chips go soggy. Instead, packages are filled with nitrogen gas to help the snacks stay fresh. "Nitrogen flushing" is a process whereby all the air is removed from the bag and replaced with nitrogen gas. The nitrogen doesn't affect the taste of the food and doesn't react with it like oxygen does, so the food stays fresher longer. Nitrogen flushing is a preservation method used to protect packaged foods, such as coffee beans, nuts, rice cakes, snack crackers and chips.
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