taste and freshness of the chips.
Potato chips are purposely packaged with extra space to act as a cushion
and keep them from being crushed during handling. But it actually isn’t
oxygen that is taking up so much space in the bags – it is nitrogen, the
gas that makes up 78% of the air we breathe. Nitrogen remains stable around
other chemicals, which makes it a useful preservative. On the other hand,
oxygen reacts with nearby substances. If potato chip bags were filled with
oxygen, the potatoes and the oil in the chips would end up becoming soggy
from the humidity and they would eventually spoil.
Read More: http://www.wisegeek.com/why-do
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