Can you eat a hairy crab when it s dead, and can you eat it when a hairy crab dies?

Many friends who like to eat crabs will have doubts: can crabs be eaten when they die?

There are two types of crabs: one is river and lake crabs, and the other is sea crabs.

Sea crabs can be eaten when they die, but river and lake crabs can't be eaten when they die!

In addition to the fact that sea crabs can be eaten after they die, they can be fried, boiled and steamed, otherwise, on the contrary, the crabs after the death of river and lake crabs are chronically poisoned after eating bitterly!

This is the characteristics of crabs in rivers and lakes, and there is a special fresh word, that is, to buy fresh and complete crabs to go home, and to fry and steam crabs according to their tastes. Fresh crab fat, with fine wine, ginger shredded vinegar and garlic, a sumptuous crab feast, the whole family is happy! Remember that river crabs can only be discarded after death, don't worry about money for a while!

Once the crab dies, the bacteria in his body will multiply in large numbers, decompose the crab meat, and some bacteria also produce toxins, if people eat such crabs, it will cause food poisoning, common manifestations are nausea, vomiting, abdominal pain, diarrhea; In severe cases, dehydration, electrolyte imbalances, convulsions, and even shock, coma, sepsis, etc. may occur.

This is caused by not handling dead crabs well. Bacteria breed, if you just eat it by steaming, it is likely that there are many harmful things that cannot be removed well. Leads to gastroenteritis, etc.

The sea crab is different, the sea crab itself grows in the deep sea pure sea, and it is frozen before the sea catches the shore and dies naturally, and will not produce harmful substances to the human body.

It is best to eat seafood in coastal places, if you feel that the local seafood market is unreliable, you can find us, our own fishing boats along the coast of southern Fujian, fresh ashore fresh and quick-frozen every day, to ensure maximum freshness, like seafood foodies, want to know more about seafood and seafood common sense, you can join our public number: Dongshan Island Fish Baby Seafood.

The food of the ocean is a gift from nature to human beings, and while human beings enjoy it, we hope that everyone can cherish it.

Crabs can not be eaten after they die: 1. After the crab dies, it will cause the reproduction of many pathogenic microorganisms and parasites, and if you eat dead crabs, it will cause a high incidence of intestinal infectious diseases, and cause diarrhea and endanger health. 2. The protein and other nutrients have been decomposed and consumed, and if you can't eat it anymore, its nutritional value will be greatly reduced.

3. The components in crabs, especially the decomposition of proteins, can cause allergies in the body, ranging from itching to allergic asthma and endangering the body.

It is not recommended to eat

If the hairy crab has not been dead for a long time, it can still be eaten if it is refrigerated, remember, it is refrigerated not frozen, and the sea crab is better than the river crab, because the living environment of the river crab is poor, and there are more bacteria. If you can't eat the hairy crab for a while, you can put it in the refrigerator and refrigerate.

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The reason why dead hairy crabs can't be eaten

1. According to the living habits of hairy crabs, it is not recommended to eat dead hairy crabs. Hairy crabs love to eat rotten food, and pathogenic bacteria and toxic substances accumulate in their bodies. Dead hairy crabs will quickly grow a large number of bacteria in their bodies, so they should not be eaten, especially when the weather is hot.

2. In terms of taste, hairy crabs lose their original umami after they die. There is also a histidine substance in the hairy crab, histidine is easy to decompose, histamine and histamine-like substances can be produced under the action of decarboxylase, and the midgut gland will quickly fall apart after the hairy crab dies, and the histidine and digestive enzymes in it will decompose the hairy crab meat. Therefore, the taste of the dead hairy crab is strange and the taste is greatly reduced.

3. The hairy crab itself is non-toxic, but after the hairy crab dies, after the shell of the hairy crab is damaged, the protein in the hairy crab's body will breed bacteria, and the infected bacteria in its body will multiply in large numbers, and the bacteria may produce toxins. It is possible that a dead hairy crab is poisonous.

4. The body of hairy crabs is easy to carry heavy metals, after the hairy crab dies, the midgut glands will quickly fall apart, and the digestive enzymes in it will decompose the hairy crab meat, and the intestinal glands are relatively easy to enrich heavy metals, and the heavy metals will also come out after it rots to produce pollution.

If it is a hairy crab that has been stored at room temperature and has not been specially treated, it cannot be eaten again after it dies for a few hours. If it is a hairy crab that has been stored at a low temperature, it can usually be eaten in this case, although the hairy crab has been dead for a few hours.

1. Storage at room temperature: If the crab is alive, it cannot be eaten if it is placed at room temperature for a few hours after death. The total number of colonies will surge 2 hours after the crab dies, and the protein and fat will be significantly decomposed after 5 hours, which can produce harmful biological amines such as histamine and putrescine, which can not completely eliminate pathogenic bacteria and harmful substances through cooking methods such as cooking, and may cause gastroenteritis after eating, and it is easy to appear allergic manifestations under the action of amines, which endanger human health;

2. Low-temperature storage: The low-temperature storage of hairy crabs usually sold on the market is one of the measures taken to extend the shelf life of crabs. However, it is recommended to buy and eat now, and you also need to keep it frozen before eating to avoid repeated thawing, otherwise it is easy to breed bacteria.

It is recommended to use high-temperature cooking methods, such as steaming, frying, frying, etc., and do not eat raw food.

If the crab has just died, it can be eaten; But if the crab dies for more than 5 hours, he advises not to eat it.

Because of the high nutrient content of crabs, the loosening of the connection between collagen fibers and their growth environment, it provides a rich environment for microbial growth, resulting in a high total number of colonies in live crabs, and the content will begin to increase rapidly after death, the longer the death time, the higher the total number of colonies, and the high total number of colonies will cause nausea and vomiting, abdominal pain and diarrhea in the eater.

In addition, relevant studies have found that sulfur-containing compounds can begin to be detected 5 hours after the crab dies, and the crab will emit a fishy odor, and if you eat this odorous food, it is easy to cause nausea and vomiting in the eater.

All in all, if you want to eat crabs, try to eat crabs alive; If you want to eat dead crabs, you must choose crabs that have just been dead for no more than 5 hours, and when cooking, the crabs must be cooked to prevent gastrointestinal reactions and diarrhea.

Although the crab is small, it has all kinds of organs. When the hard shell of the crab is removed, we can find that the crab's body parts are protected by a layer of shells, these shield-like shells, which biologists call dorsal carapaces. Appendages on the head, called antennae, have the sense of touch and smell, and some appendages have the function of mouths, which are used to tear food and put it in the mouth.

Autumn is the best time to eat crabs, which are rich in protein and trace elements, and have a good nourishing effect on the body. Crab contains more vitamin A, which is helpful for keratinization. Crabs also have anti-tuberculosis effects, and eating crabs is very beneficial to tuberculosis.

Crabs also contain a large amount of selenium, which can improve the body's immunity.

When the crab is dying or dead, the hidoxylic acid in the crab's body will break down to produce histamine. Histamine is a toxic substance, with the prolongation of death time, the crab body accumulates more and more histamine, and the poisonous gas is getting bigger and bigger, even if the crab is cooked, this toxin is not easy to destroy.

Dead crabs should not be eaten, and they may be poisoned if eaten.

Crab is delicious and nutritious, rich in protein, fat, carbohydrates, vitamins, amino acids, calcium, magnesium, iron and other nutrients, and is a delicacy on the table. But crabs cannot be eaten after death. Because crabs like to eat animal carcasses and rotting food, their digestive tract contains a large number of pathogenic bacteria and other harmful substances that are harmful to the human body.

In addition, crab is a protein-rich food, and when the crab dies, the amino acids contained in its body will spoil and turn into harmful substances such as putrescine and indole. These harmful substances cannot be completely destroyed even after high temperature cooking, and the longer the crab dies, the more putrescine and indole substances contain. So eating dead crabs can be poisoned.

In particular, the longer the dead crab dies, the greater the damage to the human body, and the more likely it is to have enteritis or even poisoning.

The crab is dead and cannot be eaten.

When a crab dies, it is easy to breed microorganisms and parasites in the crab's body, and there are bacterial toxins, which will not be destroyed even after cooking, so not only dead river crabs, but also half-dead crabs cannot be eaten.

Crabs are delicious and nutritious, but crabs cannot be eaten after death, if you accidentally eat dead crabs, you should closely observe the changes in your body, and if you feel unwell, you should go for a check-up in time.

Tips for buying crabs

1. Look

The dorsal carapace of high-quality crabs is blue-gray, shiny, the abdomen is white, the golden claws are covered with yellow hair, the color is bright, the umbilicus is rounded, convex outward, the limbs are firmly connected and curved shape, the body is large and old, if the back is yellow, the meat is thinner. In addition, if it is active, the crab that crawls around is a strong and good crab.

2. Shake

For crabs that meet the requirements of the appearance, you should weigh it one by one with your hands, and the heavy ones are fat crabs. This trick does not apply to river crabs and live sea crabs, as these crabs are often tied up with flowers.

3. Peel

Peel off the umbilicus of the crab, if the crab roe in the shell is many, neat, and condensed into shape, the crab is a good crab.

4. Pull

If you buy a dead sea crab, you should observe the crab's legs, which are intact, and the crab legs are weakly elastic when gently pulled, indicating that they are fresh sea crabs.

5. Smell

If you smell a fishy smell of sea crabs, it means that the sea crabs have spoiled and can no longer be eaten.

Live hairy crabs cannot be stored in the refrigerator, and if the temperature of the refrigerator is too low, they will freeze to death, rather than die of lack of oxygen.

Instead, it is placed in the fresh-keeping layer, in a humid environment, and the gills of hairy crabs can store water and obtain a certain amount of oxygen from it.

Put it in the cold layer of the refrigerator at about 5-8 degrees, cover the hairy crab with a wet towel (or gauze) that wrung out the water, and it can continue to keep it fresh for about 3 days; And don't let it drown in the water; Because the house is full of stagnant water and there is bleach, and there is no dissolved oxygen pump in the general family, if you are all flooded, you will definitely die.

Crabs must be eaten fresh, dead crabs contain a lot of bacteria and viruses, some people can even cause food poisoning after eating, diarrhea, nausea and other uncomfortable reactions, serious even shock, coma and other symptoms, very dangerous.

It is not recommended to eat dead crabs, after freezing dead crabs, dead crabs will stay in a state of just dead forgetting, which can only delay deterioration, and it is not helpful to eat, dead crabs can not be eaten, because after the crabs die, toxic substances will be generated, which will cause greater harm to the body.

Hairy crab is a fresh aquatic product, the storage time is shorter after leaving the water, and the number of hairy crabs that can be eaten in about 3 days is relatively simple: choose the vigorous hairy crab, tie the crab's feet and the sluice together, so as to reduce the physical consumption of the hairy crab, and then put it in the refrigerator of the refrigerator, cover it with a wet towel to preserve the thick branches. Stool sedan chair.

Don't eat half-cooked crabs, because crabs contain a lot of lung flukes, if they are not sterilized by high temperature, they are likely to cause great damage to the lungs after eating into the body, and the crab shell is relatively hard, so it is difficult to cook, but it should be boiled for a longer time, about half an hour.

Don't eat the stomach and intestines of crabs, because crabs like to eat corrosive foods when they are growing, these foods will enter the stomach and intestines after eating, so the probability of bacteria is much higher, you need to pay attention when eating crabs, do not eat the stomach and intestines of crabs, so as not to cause harm to the body.