Name: 人間の涙～玉ねぎはなぜ泣くのか？| 涙を流すのはなぜ？ (Human Tears - Why do onions make you cry? | #aumsum)
Uploaded: 2021-01-14T08:10:29.000Z
Duration: 1 min 39 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

When we cut an onion, millions of onions cells rupture.

Releasing the amino acid sulfoxides along with some special enzymes.

These special enzymes react with amino acid sulfoxides to form a chemical called Syn-propanethial-S-oxide.

This chemical is volatile, that is, it easily
evaporates at normal temperature, forming a gas.

It reacts with the substance that keeps our eyes lubricated and forms mild sulfuric acid.

This sulfuric acid gives us a burning sensation.

Now, in order to wash off this acid, our lacrimal glands produce a disinfecting liquid.

But when our eyes cannot hold any extra amount of disinfecting liquid.

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人間の涙～玉ねぎはなぜ泣くのか？| 涙を流すのはなぜ？ (Human Tears - Why do onions make you cry? | #aumsum)

absolutely

sensation

substance

amount