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Lachrymatory-factor synthase is released into the air when we cut an onion. The synthase enzyme converts the sulfoxides (amino acids) of the onion into sulfenic acid. The unstable sulfenic acid rearranges itself into syn-ropanethial-S-oxide. Syn-propanethial-S-oxide gets into the air and comes in contact with our eyes. The lachrymal glands become irritated and produces the tears!
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoAs onions are sliced or eaten, cells are broken, allowing enzymes called alliinases to break down amino acid sulphoxides and generate sulphenic acids. A specific sulfenic acid, 1-propenesulfenic acid, formed when onions are cut, is rapidly rearranged by a second enzyme, called the lachrymatory factor synthase or LFS, giving syn-propanethial-S-oxide, a volatile gas known as the onion lachrymatory factor or LF. The LF gas diffuses through the air and eventually reaches the eye, where it activates sensory neurons, creating a stinging sensation. Tear glands produce tears to dilute and flush out the irritant. Chemicals that exhibit such an effect on the eyes are known as lachrymatory agents.
Wiki User
∙ 11y agobecause onion has a pungent smell which along with makes you feel like coughing
and your eyes water
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Why do onions cry?
Onions contain sulfur compounds (which also give them their characteristic smell). The compounds are gases and are released when onions are cut. These gases react with the water in the tears in the eyes to form other acidic compounds which irritate the eye and cause crying.
How do you sweat onions?
You cry.Your tears will fall on the onion and it will look like the onion was sweating.
Why is it when you cut onions your eyes sting?
jade and lachy are the awesomest
Does wearing contacts prevent crying when cutting onions?
No. There is no research that says that cutting onions is good for your eyes. Cutting onions releases thiopropanol sulfoxide which, when it hits your eyes, creates a small amount of sulfuric acid. This is why your eyes burn and you cry when you cut onions.
Why man gets tears while cutting onions?
Because the gas evolved from the cutted onions, named syn-propanethial-S-oxide, is irritating for the eyes.
What does state the nature of the problem mean for an experiment?
Stating the problem usually calls for asking Why? or How?. Observation: My eyes water when I cut onions. State the problem: Why do my eyes water when I cut onions?
When you cut Garlic no tears come out but you cut onion tears come out why?
Sulfur. Bulb roots with higher sulfur content cause you to tear up. When cutting the bulbs, it releases the sulfur in a gaseous form. Gaseous sulfur seaks water and the most convenient/noticable place it finds it is in the very sensative tissue of your eyes. Sulfur While both onions and garlic have sulfur in them, in the onions there is more moisture which helps the sulfur (in the form of sulfuric acid) reach your eyes. Since garlic is smaller and usually not as juicy its sulfur doesn't make it to your eyes as easily.
Why do onions make people cry when they cut them?
The acidic chemicals in the onion are released when slicing through its tissue, rise in the air along with heat and irritate your eyes by being absorbed through the cornea. Use a fan to blow the molecules away from your eyes to avoid irritation. Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame the enzyme allinase for the instability of substances in a cut onion.
Who was selected as the new face for Christian Dior fragrance?
The fumes from the onions iritate the eyes and tears start to flow in order to wash out the iritant.
You'll cry if you cut this but only if the propanethial-S-oxide finds its way to your eyes What food is this?
Onions
When was With Tears in My Eyes created?
With Tears in My Eyes was created in 1945.
Why do your eyes sting when near onions?
When you cut through an onion you break open a number of the plant cells. These cells contain enzymes, also amino acid sulphoxides. When they escape, these react and decompose to form sulphenic acid, which is a volatile gas. The gas reaches your eyes and reacts with the water in tears producing a weak sulphuric acid, which irritates the eyes. The body's response to the irritation is to produce more tears in an attempt to dilute the irritant and wash it out of the eyes. When this happens, the temptation is to rub your eyes, but as there is probably onion juice on your hands this only makes things worse.
