Onions produce the chemical irritant known as syn-propanethial-S-oxide; this stimulates the eyes’ ______ glands which release tears.

Onions produce the chemical irritant known as syn-propanethial-S-oxide; this stimulates the eyes' Lachrymal glands which release tears.​

🛑Important Points:
-Onion is a vegetable that is mostly cultivated species of genius Allium.
-syn-propanethial-S-oxide is a volatile liquid, its aerosol stimulates nerves in the eyes.
-Chopping of onion causes damage to the cells, the breakdown of amino acid sulfoxides generates sulfenic acid.
-Propene sulfenic acid is rapidly acted on by lacrimatory factor synthase producing syn-propanethial-S-oxide, which diffuses and activates sensory neurons (in eyes).