Why Does Cutting An Onion Make You Cry вђ The Wonder Of Science We cry, and sometimes laugh at ourselves when we chop onions with tears streaming down our cheeks. crying usually occurs about 30 seconds after you cut an onion open. the tearing starts to slow down after about five minutes of cutting. as hard as we try, we usually can't control the flow of tears caused by the fumes of the onions. The takeaway. preparing onions often causes a chemical reaction that results in tears for most people. some people are more sensitive to onions than others. try chilling onions in ice before.
Why Do You Cry When You Cut Onions Cnn Start with a sharp knife. using a sharp knife while cutting onions will drastically trim down the amount of cells you’ll bruise. as a result, fewer enzymes will be released, thus, fewer tears. When you chop onions, they release a chemical compound that irritates your eyes and triggers your tear glands. onions get their distinctive, pungent flavor from sulfur—the same chemical behind. Certainly sweeter onions tend to have less of the sulphur containing compounds that eventually produce the propanthial s oxide. but it's also possible that no two onions from the same bag will have the same effect, so cutting into the vegetable may be the only way to know if it will make you cry. however, we have a better idea why onion's. When an onion is sliced open, it releases a pesky molecule known as a lachrymatory factor. when it hits your eyes, it’s all over. your lachrymal glands start churning out tears. scientists long.
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