Dead crabs will produce a large amount of histamine in the body, people will consume histamine poisoning, and because histamine is a kind of allergic poison, can also be said to be allergic food poisoning.

No overnight, not the root cause of the hospital, the main reason is that once the crab "hiccups", inside the bacteria began to rebel

Crab death, the crab body will soon stiffen and autolysis, the body of bacteria will also rapidly multiply and spread to the crab meat

In the weak acid environment, the bacteria will decompose amino acids, resulting in a number of bacteria. Bacteria will decompose amino acids, producing harmful histamine, histamine-like substances, even if the crab is cooked, this toxin is not easy to be destroyed

Then some people have to say, a crab is just a few taels of weight, remove the shells and shells and crab gills, crab intestines, crab stomach and so on, the crab meat, the crab yolk is not enough to stuff my teeth, how can it lead to poisoning in the hospital?

People who are allergic to histamine can react to it even if they eat a bite

After eating dead crabs, symptoms will appear in 10 minutes to 3 hours or so: flushed cheeks, chest and whole body skin, conjunctival congestion, and headache, dizziness, tightness in the chest, general weakness and irritability, etc.

If you ate a plate of crabs, suddenly you can't see them, but you can see that they have been poisoned. If you eat a plate of crabs, suddenly appeared these symptoms, rush to the hospital on the right!

In fact, not only crabs, but shellfish, mackerel/herring/sardines/tuna and other fish are prone to produce histamine when they are dying or after death, especially pickles, canned food, and so on, made from them.

Not that all dead crabs are inedible, though. Sea crabs like pike crabs and green crabs, which die quickly when they leave the sea water, are frozen and preserved by fishing boats. Sea crabs can be eaten dead, but they also need to be frozen quickly, and dead sea crabs are also inedible after more than a day in a room temperature environment or more than 15 days in freezing conditions.

So, we must not be greedy for cheap, go to the market to buy dead crabs to eat

Also do not buy because the crab is dead can not afford to throw, to cook and eat

If the poisoning into the hospital, it can be a small loss!

How to judge whether hairy crabs are fresh

Dead crabs can't be eaten, how to identify a hairy crab's dead or alive, has become a crucial thing

especially when a live crab, mistakenly thrown out of the dead crabs, that's a piece of how heartbreaking things

How to check if the crabs are fresh? Look at the eyes of the crab, if they are popped on the outside, touch them with your hand and the eyes move, then they are alive.

Touch the claws of the crab with your hand, if they move, they are alive. Put the crab into the water to see if it spits bubbles, spits bubbles are live hairy crabs.

If the above three kinds of no reaction, you can tie the rope to untie, with nails to pick open its navel, to see if it will close (this action needs to be careful, hairy crabs may suddenly wake up to storm injury).

If the crab after the above test, or no reaction, then it is a martyrdom

But there is also a problem ah, generally crabs are seven or eight a buy, I am a bachelor a meal can not eat it all how to do?

There are too many crabs to eat at one time. The most important thing to remember is that it's a good idea to have a good time, and that's what you're going to do!

The most convenient and reliable method is to put the hairy crabs in the refrigerator in the fresh layer (temperature between 2-5 °, remember not to put the freezer area Oh), and covered with a wet towel, so that the hairy crabs can survive for 2-3 days.

If you don't have a refrigerator, be sure to eat it as soon as possible, really can't eat it all, you can put the hairy crabs into a basin, add water to its mouth, and then place it in a cool place, and change the water every two hours, this method can only be preserved for 0.5-2 days.

If all this is too much trouble for you, I'm sure your friends won't mind sharing your worries!