Here are some friends with simlar question as we.And I have this question for many days,anyone help us?
Kitty said: Yes.Why our eyes produce tears when we chop onions?-I try seach this on internet but no results found.Maybe this is a stupid question.
Mike said: oh,no,you are wrong.I have found as below for this question(Why our eyes produce tears when we chop onions?),it will help you,my kids.
Answers:
When you slice through an onion, you break open a number of onion cells. Some of these cells have enzymes inside of them, and when they are sliced open, the enzymes escape. The enzymes then decompose some of the other substances that have escaped from sliced cells. Some of these substances, amino acid sulfoxides, form sulfenic acids, which then quickly rearrange themselves into a volatile gas.
The gas reaches your eyes and reacts with the water that keeps them moist. This changes the chemical's form again, producing, among other things, a mild sulfuric acid, which irritates the eyes. The nerve endings in your eyes are very sensitive and so they pick up on this irritation (this is why our eyes sting when we slice onions). The brain reacts by telling your tear ducts to produce more water, to dilute the irritating acid so the eyes are protected. Your other reaction is probably to rub your eyes, but this will actually make the irritation a lot worse, of course, if you have onion juices all over your hands.
Other Answers:
the onions release a juice when we chop them that stings our eyes and makes them water
The onion releases a bunch of chemicals, in the juices and into the air in aspirated particles. These mix with the natural tears in our eyes to make small amounts of sulfuric acid.
Source(s):
Alton Brown's "Good Eats" on Food Network.
Read this: All the information of cooking and health post by website user,chineseop.com not guarantee
correctness,It's Non-profit and only for informational purposes.
Kitty said: Yes.Why our eyes produce tears when we chop onions?-I try seach this on internet but no results found.Maybe this is a stupid question.
Mike said: oh,no,you are wrong.I have found as below for this question(Why our eyes produce tears when we chop onions?),it will help you,my kids.
Answers:
When you slice through an onion, you break open a number of onion cells. Some of these cells have enzymes inside of them, and when they are sliced open, the enzymes escape. The enzymes then decompose some of the other substances that have escaped from sliced cells. Some of these substances, amino acid sulfoxides, form sulfenic acids, which then quickly rearrange themselves into a volatile gas.
The gas reaches your eyes and reacts with the water that keeps them moist. This changes the chemical's form again, producing, among other things, a mild sulfuric acid, which irritates the eyes. The nerve endings in your eyes are very sensitive and so they pick up on this irritation (this is why our eyes sting when we slice onions). The brain reacts by telling your tear ducts to produce more water, to dilute the irritating acid so the eyes are protected. Your other reaction is probably to rub your eyes, but this will actually make the irritation a lot worse, of course, if you have onion juices all over your hands.
Other Answers:
the onions release a juice when we chop them that stings our eyes and makes them water
The onion releases a bunch of chemicals, in the juices and into the air in aspirated particles. These mix with the natural tears in our eyes to make small amounts of sulfuric acid.
Source(s):
Alton Brown's "Good Eats" on Food Network.
correctness,It's Non-profit and only for informational purposes.
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