Most People Don’t Know Why: Why Do We Cry Like We’re Missing Our Ex When Chopping Onions?
Chopping onions in the kitchen often signifies an inevitable flood of tears for many of us. But did you know that the scientific mechanism behind this daily drama is actually a defense system that has evolved over millions of years?
The complex chemical reactions within the cells of the onion release volatile compounds that sting our eyes, all within a matter of seconds.
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How Does Onion's Tear-Jerking Chemical Weapon Operate?
The process that initiates when onion cells are damaged explodes like a molecular bomb. When the cell walls shatter, the enzyme alliinase encounters the amino acids naturally found in the onion. This encounter triggers the formation of a volatile compound called propanetial S-oxide.
Eric Block, an organic chemistry expert from Albany University, has detailed this process in his extensive research on onion chemistry. According to Block, propanetial S-oxide behaves like an invisible weapon floating in the air, and it transforms into sulfuric acid when it reaches the eyes. This acid triggers the eye's natural defense mechanism, leading to a heavy tear secretion.
Is it Possible to Chop Onions Without Shedding a Tear?
Scientists have devised various solutions to combat this painful situation. One of the most effective methods is chilling the onion in the refrigerator before cutting it. The lower temperature slows down enzyme activity, thereby reducing the formation of volatile compounds. Using a sharp knife is also of critical importance; blunt knives shatter more cells, accelerating the chemical reaction.
Peeling onions under water is another effective technique. The water dissolves the volatile compounds before they reach your eyes. Some chefs also suggest chewing gum before cutting the onion; this method increases mouth breathing, thereby reducing nasal breathing.
Science's Tearless Onion Triumph
A groundbreaking study conducted in Japan in 2008 yielded revolutionary results for onion lovers. Japanese scientists managed to develop a variety of onion that does not cause tears using genetic engineering techniques. These special onions are produced using selective breeding methods that significantly reduce the activity of the alliinase enzyme.
Thanks to modern agricultural technology, in the future, we may experience a completely 'tearless' onion experience in our kitchens. These advancements show that scientific solutions can be found even for minor inconveniences in our daily lives.
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