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. Recent studies from Japan, however, proved that lachrymatory-factor synthase, (a previously undiscovered enzyme) is the culprit (Imani et al, 2002).
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.
As a general rule, the more pungent the type of onion, the more it can make you cry. The chemical factor that does it is similar to a very, very weak form of police tear gas. But an Ebenezer or Southport Yellow Globe or Crystal White Wax onion will make you cry much more than a Vidalia, for example. The trick to keeping onions from making you cry is to keep them refrigerated. If you chop them up before they reach room temperature - no tears. I cooked for a living in college, and I found that out early on.
Cut onions produce a gas called the onion lachrymatory factor when the cells are broken. Lachry- means tears and -matory means to be an irritation. The gas causes the sensory nerves of the eye to feel a stinging sensation. The tears try to wash away the gas. Cutting them under running water helps to reduce the gas. Using a fan to blow the gas away can also help.
its the oils and gasses in the onion juices that make your eyes tear up its a chemical reaction
Who knows? I don't believe onions are part of a dogs diet.
The sulfur compounds in ordinary onions are more concentrated and more effective at stimulating our tear glands.
You do not "cry" as much when you slice them. Another technique to do this is slicing them in water.
because onions are grown underground, where as underground have no sunlight. And the function of chloroplast is to trap light energy for plants to make food.
Any strong emotion can make you cry - crying is a way to release emotion. Often, people will cry if something makes them very happy, or if it is very beautiful.
Onions are biennials
Onions dont make you cry the make your eyes watery
bc you touch urself at nite
White, yellow, and red onions are much more likely to make us cry than green onions. Onions make us tear up because of a reaction in the vegetable that occurs as we break into it, which causes the release of a chemical called lachrymatory factor, which then irritates our eyes.
Onions.
It's not just purple onions. There is a chemical inside of onions that, when you slice an onion, are released into the air. This causes a slight chemical reaction in your eyes, causing a burning sensation. To combat the burning, your eyes tear, causing you to "cry."
Coz thy are apples
onions
Trick question!! Chuck Norris can't cry, only cause eternal crying for his victims.
no , I mean who in the world like onions they smell bad. They make me cry:( :( :( :( :(
no they dont make you cry the purple onion is sweet so you dont have to chill them
That would be an onion. Onions don't cry, but the people who peel them do.
they don't cry