Reaching into a freshly-opened bag of chips leaves many snackers wondering, what's with all the empty space?
Reaching into a freshly-opened bag of chips leaves many snackers wondering, what's with all the empty space?If you are a snack lover, you have probably been disappointed at least once when you open up your bag of delicious chips and see it is only half full.
But, despite the disappointment that many face, experts like Joe Schwarcz, a chemistry professor at McGill University, say there's actually a good reason for this— and it is not because of inflation. "There is actually a reason why the bag looks the way that it does and why as soon as you open it, you hear as the air comes out. Well, it isn't actually air. It's pure nitrogen," Schwarcz said.
According to Fred Caporaso, professor of food science at Chapman University, companies choose nitrogen to fill their snack bags because the gas is inert, meaning it doesn't react with anything else, whereas the oxygen that it's in the air will react with the oil in the chips, thus causing them to go rancid quickly.This is why unopened bags of chips are still fresh two to three months later, thanks to nitrogen, Caporaso added.
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