Name: 洋芋片為何只有半包？關於「酸敗」的真相 | #aumsum (Rancidity - Why is a bag of chips half full? | #aumsum)
Uploaded: 2025-12-08T10:51:24.000Z
Duration: 1 min 46 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

It is mainly because of a concept called rancidity.

When food becomes rancid, it develops an unpleasant smell and taste and it becomes unsafe for consumption.

Rancidity generally refers to a condition where the fats and oils present in food get oxidized.

Since the chips contain fats and oils, they are likely to get rancid.

Therefore, to prevent this, nitrogen gas is flushed into bags of chips by manufacturers.

Nitrogen does not react with fats and oils.

As a result, rancidity does not take place.

Moreover, a gas in the bag serves as a cushioning agent and prevents the chips from crumbling.

That is why the bag of chips is only filled till half.

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