Why can t dead hairy crabs be eaten by river crabs, but dead sea crabs can be eaten?

Because of the different growing environments, the river is heavily polluted and can breed a lot of bacteria. The nautical waters are wide and the pollution is relatively small. So compared toRiver crabs, sea crabs are a little safer.

Generally speaking, dead crabs are not edible, and from a scientific point of view, it is not a bacterial problem, because when the crab is dying or dead, the hidoxic acid in the crab's body will break down to produce histamine.

Histamine is a toxic substance. As the time of death prolongs, the crab body accumulates more and more histamine, and the poisonous gas becomes more and more powerful, and even if the crab is cooked, this toxin is not easily destroyed.

But under the comparison of river crabs and sea crabs.

River crabs like to eat dead fish, dead shrimp and other rotten animal carcasses in the water, and will be infected with certain bacteria in the crab's body. There are a large number of germs inside and outside the crab. Live crabs can excrete bacteria from their bodies through metabolism in their bodies; Once the crab dies, the bacteria in its body will multiply, decompose the crab meat, and some bacteria will also produce toxinsIf people eat such crabs, they can get food poisoning.

Common manifestations include nausea, vomiting, abdominal pain, and diarrhea; In severe cases, dehydration and electrolyte imbalances may occur.

Convulsions, even shock, coma, sepsis.

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The crabs in the sea have wider waters in the seawater, and the food is fresher. It is also because there is salt in the seawater, which has a certain anti-virus effect, so it can be relatively preserved.

If it is not stored properly, it will be seen that the surface of the crab has darkened, whether it is a river crab or notSea crabsNone of them can be eaten.

If you accidentally eat a crab with a dark surface, you should immediately send it to the hospital and give glucose.

Normal saline or compound sodium chloride.

Intravenous dripping, rehydration, encourage patients to drink more water, tea, etc. Potassium supplementation should be given in time to maintain electrolyte balance, and sensitive antibiotics should be given to control and prevent infection. Patients with low blood pressure are given vasopressor drugs and other symptomatic treatment.

Therefore, when buying crabs, you must pay attention to whether they are fresh, do not buy dead crabs, especially river crabs, and cook them thoroughly when using them to kill the bacteria contaminated inside and outside the crabs.

To sum up, dead hairy crabs and river crabs must not be eaten, and sea crabs should not be eaten as much as possible after they die.

Because the dead hairy crab river crab will absorb the toxic substances in the river and may also have parasites, there is not so much pollution in the sea.

Because there are some bacteria and impurities in dead hairy crabs, which are harmful to the body.

Because dead hairy crabs and river crabs are not fresh and are easy to spoil, the impact of sea crabs is not so great.

Because after the death of seafood like this, some toxins will be produced in the body, which is not good for the human body.

I think this must have something to do with what they have in their body, which is easy to breed bacteria.

Because the meat quality of these things is different, the meat of river crabs will rot faster.

This is due to the fact that their body tissues are very different.

Now they don't have them, they all have different attributes, that's why they're like this.

This may be because the substances in their bodies are different.

Hairy crabs are dying or as long as they are dead, it is best not to eat, hairy crabs are easy to rot after death, the crab body contains a substance called histidine, when dying or dead, the histidine in the crab body will decompose to produce histamine. Histamine is a toxic substance, with the prolongation of death, the crab body accumulates more and more histamine, more and more toxins, this toxin is not easy to destroy, even if it is cooked, do not eat.

Crabs live in the water and like to eat dead fish, dead shrimp and other decaying animal carcasses in the water, and the crab will be infected with certain bacteria in the body. In particular, river crabs mostly grow in dirty river ponds, and there are a large number of germs inside and outside the crabs. Live crabs can excrete bacteria from their bodies through metabolism in their bodies;

Once the crab dies, the bacteria in its body will multiply and decompose the crab meat, and some bacteria will also produce toxins, if people eat such crabs, it will cause food poisoning.

Dead crabs cannot be eaten because a large number of bacteria multiply in the body of dead crabs and produce toxic substances; At the same time, bacteria break down proteins, reducing nutritional value.

01 Dead crabs produce a lot of histamine in their bodies. Histamine poisoning occurs when humans eat dead crabs. Because histamine is an allergic poison, it can also be said to be allergic food poisoning.

Don't think it's okay to eat just a little bit of dead crab meat. People who are allergic to histamine can cause a reaction even if they take a bite. For example, after eating a dead crab for 10 minutes and 3 hours, symptoms will appear, such as redness of the cheeks, flushing of the chest and the whole body, and conjunctival hyperemia of the eyes, as well as headache, dizziness, chest tightness, general fatigue and irritability.

Dead crabs should never be eaten, because another important cause of poisoning in dead crabs is bacterial infection. Generally speaking, the living environment of wild river crabs is not as good as that of artificial and marine crabs, and once they die, bacteria inside and outside the body will multiply, decompose crab meat, and produce toxins. Comparatively speaking, the risk of bacterial infection is higher, and people are also more likely to develop bacterial infections after consumption.

A crab of 3 taels and 4 taels can only eat 60 grams and 80 grams. The dietary guidelines for Chinese residents recommend that each person consume 40 grams and 75 grams of aquatic products per day, so do not eat more than one crab per day. People with allergies, hyperuricemia or gout, pregnant women, the elderly, children, and the infirm should eat less or no crabs.

If you are caught by a crab, you should immediately rinse the wound with water, disinfect it with iodine, and if the redness and swelling do not go away and the bleeding does not stop, you should go to the hospital immediately.

There are generally no pathogenic bacteria and toxic substances in the meat of live crabs, but once the crab leaves the water, its vitality gradually weakens, and the bacteria inside and outside the body begin to multiply in large numbers, until the depths of the muscles, its tissue components begin to disintegrate, once the crab dies, the bacteria multiply faster, and a large number of bacteria and toxins are formed in the crab at this time.

If the crab dies naturally, the toxins in the body will multiply, and these toxins will also decompose to the crab meat, and the cooked crab, after high temperature cooking, the high temperature can effectively prevent the spread of bacteria, better play a role in killing bacteria, and accelerate the elimination of toxins in the crab body. And after the water is boiled, it is boiled for another 20 minutes, which further kills the germs and toxins in the crab meat, so there are no toxins, and the taste is still very delicious.

Dead river crabs produce large amounts of histamine in their bodies. Eating dead river crabs can cause histamine poisoning.

Histamine is an allergic poison that causes allergic food poisoning.

There are bacteria in the body of river crabs, and when the river crab dies, the bacteria will multiply in large numbers, decompose the crab meat, and produce toxins, which is more likely to cause bacterial infection.

Histamine poisoning does not occur in sea crabs. Therefore, the river crab can not be eaten when it is dead, and the sea crab can be eaten.

Haha

Crabs should be eaten alive, because the bacteria in the body of dead river crabs will multiply rapidly and spread into the crab meat, which can cause vomiting, abdominal pain and other uncomfortable symptoms after eating. Crabs are suitable for eating fresh, that is, eating freshly made. The remaining cooked crabs must be kept in a clean, cool and ventilated place, and they should be cooked and steamed thoroughly when eating.

If the crab is bought and tied, you click on his eyes, if there is a reaction, it is alive, if there is no reaction, it is dead, if it is not tied, you put him on the ground, if it moves, it is alive, or you can also wash it down with water and watch him spit bubbles? If you don't vomit, you'll almost die, and if you die, you can't eat it, and you can eat it if you are dying, because the toxins in his body haven't started to grow. But if you don't feel at ease, it's better not to eat it, and don't feel sorry for those crabs and make your body suffer.

Generally speaking, it is not edible, and dead crabs will produce harmful substances in their bodies, and I don't know what they are, but they are certainly not good things. If you don't believe me, you can eat and see how it reacts?

I do hairy crabs, I have to sacrifice a lot of hairy crabs every day, my approach is that it is often dying, it can be eaten, it is not long to die, you can also steam it out and then take a look, eat a leg meat first, there are layers, there is an umami can definitely be eaten, steamed out without fragrance, there is a smell of dead fish and rotten shrimp or the whole color is not bright, the shell is black can not be eaten, my company 5, 6 little brothers have eaten experience, eat a few at each meal has nothing to do.