Overnight, not overnight, is not the fundamental reason for entering the hospital. Mainly because once crabs burp, the bacteria inside begin to rebel.
After the death of a crab, the crab will soon become stiff and autolytic, and the bacteria in the body will quickly multiply and spread into the crab meat.
In weak acid environment, bacteria will decompose amino acids and produce histamine and histamine-like substances harmful to human body. Even if the crab is cooked, this toxin is not easy to be destroyed.
At this time, some people will say that a crab weighs several times. No shell, crab cheeks, crab intestines, crab stomach, crab meat and crab roe are not enough for me to plug my teeth. How can it lead to poisoning in the hospital?
People who are allergic to histamine can cause a reaction even if they take a bite.
After eating dead crabs, symptoms will appear about 10 minutes to 3 hours: cheeks are red, chest and whole body skin are flushed, conjunctival congestion, headache, dizziness, chest tightness, general fatigue and irritability.
If these symptoms suddenly appear after eating a plate of crabs, just go to the hospital quickly!
In fact, not only crabs, but also shellfish, mackerel/herring, sardines/tuna and other fish are prone to produce histamine when they are dying or after death, especially pickled food and canned food.
However, it doesn't mean that dead crabs can't be eaten. Sea crabs, such as swimming crabs and blue crabs, die soon after leaving the sea. Fishing boats will freeze to keep fresh. Sea crabs can be eaten to death, but they also need quick freezing. Dead sea crabs cannot be eaten if they are stored at room temperature for more than one day or frozen for more than 65,438+05 days.
Therefore, we must not be greedy and cheap to buy dead crabs in the vegetable market.
Don't buy crabs, because crabs are dead and reluctant to throw them away, so they are cooked and eaten.
If you go to the hospital with poisoning, it will be a penny wise and pound foolish!
How to judge whether hairy crabs are fresh?
Dead crabs can't be eaten, so how to tell whether a hairy crab is alive or dead has become a crucial thing.
Especially how painful it is to throw away a live crab and mistake it for a dead one.
How to check whether crabs are fresh? Look at the eyes of hairy crabs. They bounce outside. If you touch them with your hands, your eyes will be alive.
Touch the paw of a hairy crab, it will move and live. Put the hairy crab in the water and see if it spits bubbles. It's fresh hairy crabs that spit bubbles.
If the above three things don't respond, you can untie the tied rope, open its navel with your nails and see if it will close (this action needs to be careful, the hairy crab may suddenly wake up and hurt people violently).
If the hairy crabs pass the above tests and still have no response, it is a heroic sacrifice.
But there is still a problem. Generally, crabs are bought for seven or eight yuan. What if I can't finish a meal?
There are too many crabs to finish a meal. What should I do? Give it up, of course!
The most convenient and reliable way is to put the hairy crabs in the fresh-keeping layer of the refrigerator (the temperature is between 2-5, remember not to put them in the frozen area) and cover them with wet towels, so that the hairy crabs can survive for 2-3 days.
If there is no refrigerator, you must eat it as soon as possible. If you can't finish eating, you can put the hairy crabs in a basin, add water to your mouth, then put them in a cool place and change the water every two hours. This method can only be stored for 0.5-2 days.
If you think these are too much trouble, I believe your friends don't mind sharing your worries!