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The Chemistry Of Onions
Transcript of The Chemistry Of Onions
Why do Onions make you cry
Onions contain the chemical syn-Propanethial-S-oxide which stimulates the eyes' lachrymal glands and causes us to release tears. Scientists used to blame the enzyme alliinase for the instability of substances in a cut onion. But recent studies from japan show that lachrymatory-factor synthase is the culprit.
Lachrymatory-factor synthase is released into air as soon as you cut an onion
Synthase enzyme converts the sulfoxides (amino acids) of the onion into sulfenic acid.
The sulfenic acid rearanges itself and becomes syn-ropanethial-S-oxide.
Syn-ropanethial-S-oxide is released into air and comes in contact withour eyes. Therefore irritating the lachrymal glands in our eyes and causing tears to come out
Why onions make us cry YouTube video