How long does it take to have a reaction after eating a dead crab, how long does it take for a crab

We all know that crab is a very popular food, it tastes delicious and delicious, has a variety of methods, high nutritional value, and is deeply loved by people, and many people will eat crabs often, especially in autumn. So how long does it take for a dead crab to feel bad? Let's take a closer look!

How long does it take for a dead crab to have a bad feeling after eating it1

How long does it take for a dead crab to have a bad feeling after eating.

It varies from person to person, and generally has a reaction in about 1-4 hours.

Under normal circumstances, if the patient has a relatively good immune function, is relatively young, has no obvious primary underlying disease and is in good health, it usually appears within 30 minutes to 1 hour. Digestive system.

reactions such as nausea, vomiting, bloating, abdominal pain and diarrhea. However, for immunocompromised, significant primary underlying medical conditions, and older patients who take more other foods, they usually react within 2-4 hours, showing symptoms outside of the digestive tract, but also with symptoms such as chest tightness.

Shortness of breath, discomfort in the precordial area with dizziness.

and headaches. Once the above conditions occur, the symptoms are severe and you need to seek medical attention promptly.

How long does it take for a dead crab to have a bad feeling after eating it2

What happens if a dead crab eats it.

1. Diarrhea. After the crab dies, the bacteria in the body quickly invade the inside of the hairy crab. Hairy crabs are rich in protein and fat and are highly nutritious. The invading bacteria multiply quickly and are prone to diarrhea, vomiting, abdominal pain, etc.

2. Poisoning. Crabs are prey and often eat dead animal carcasses. Since crabs contain some bacteria, pathogenic bacteria, and other substances, when they die or die, the bacteria quickly break down the proteins of the hairy crabs, resulting in cadaverine.

and histological changes, the content of amines increases rapidly, they are toxic substances, and even if they are steamed at high temperatures, they do not lose the toxic substances present in the body. Therefore, human consumption is likely to cause food poisoning.

Symptom. How long does it take for a dead crab to have a bad feeling after eating3

How to save the crab will not die.

1. Refrigeration: Crabs are more energetic, and leggings are tied to reduce life consumption. Place it in the refrigerator and cover it with a damp towel. It can be stored for about 3-5 days.

2. Freezing: Crabs have a strong ability to withstand low temperatures. After tying the crab legs, put them in the refrigerator to freeze them, which will inhibit their lifespan and will not crab blue crabs.

Death. 3. Breeding: Put the crab in a plastic bucket and then add a small amount of water to the crab's belly, which can prevent the crab from crawling and maintain a humid environment suitable for the crab.

Crabs are relatively easy to die animals, many people have eaten them, but many people know that dead crabs are not to be eaten, so why is this?

Crab. 1 Why can't dead crabs be eaten?

Dead crabs produce large amounts 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.

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, once they die, bacteria inside and outside the body will multiply in large numbers, decompose crab meat, and produce toxins, relatively speaking, the risk of bacterial infection is higher, and people are more likely to have bacterial infections after eating.

2 What does a dead crab look like when steamed.

1. The color of the difference: Generally, the back of the dead crab is dark red and the abdomen is gray and white after cooking, while the fresh one is bright red and the abdomen is bright white.

2. The taste of difference: After the dead crab is cooked, most of them will have a smell different from the fishy smell of the sea, while the live crab will not have it after cooking.

3. The hardness of the shell of the difference: the shell of the live crab is very hard after cooking, and it will not be concave when pressed by hand, and the shell of the dead crab is relatively soft, and it can be pressed down with a press by hand.

3 What to do if you eat a dead crab.

After eating dead crabs, it is recommended to consult a doctor or go to the hospital for a routine blood test.

Dead crabs contain a lot of bacteria that can cause food poisoning when eaten. Crabs like to eat dead fish, dead shrimp and other rotten animal carcasses in the water, and certain bacteria will accumulate in the crab's body. In particular, river crabs, most of which grow in dirty river ponds, have a large number of bacteria inside and outside their bodies.

Live crabs can excrete these bacteria from their bodies on their own, but when the crab dies, the bacteria in the body multiply. These bacteria have a certain effect on the human body, but this reaction will vary depending on the body type.

4 Precautions for eating crabs.

1.Don't eat if you have a cold stomach: Because the nature of crabs is relatively cold, it is best not to eat crabs if your stomach is not very good, or if you have a weak constitution.

2.Obese people should not eat it: the crab roe and crab paste in crab are delicious, but the cholesterol in them is very high. Therefore, patients with high blood pressure and hyperlipidemia should not eat it.

3.Cooked: Some people like to eat crabs that are not cooked and think this is more delicious. But crabs that are not ripe have a lot of bacteria, so don't eat crabs that are not cooked.

Summary. Hello, I'm glad to answer for you, crabs die for more than 12 hours, try not to take use, eat spoiled food, it may also lead to gastrointestinal dysfunction, and in severe cases, there may be poisoning.

You are good at Minqing, I am happy to answer for you, crabs die for more than 12 hours and try not to take use, eat spoiled food, it may also lead to gastrointestinal dysfunction, and in severe cases, there may be poisoning.

If it is at room temperature, for example, twenty or thirty degrees, the crab can be eaten within two hours of death, but it is not recommended to eat it after two hours, because the crab is a high-protein food, and it parasitizes a lot of bacteria, viruses, etc., as soon as it dies, this high-protein food is fully utilized by these bacteria, causing poisoning. If the crab dies in the freezer, the shelf life of its Mingshan can be extended at this time, but it is not recommended to be too long, about one to two days is okay.

OK. Crabs are dying, but they are not yet dead are edible, although dead crabs will produce harmful components to the human body, but the crab bacteria that are just about to die have not had time to breed in large quantities, and some cadaverine, histamine and other ingredients have not had time to be produced.

Therefore, crabs that have just died or are dying are edible. But if the death time is too long, for example, in the current high temperature of more than 30 degrees, the crab dies for more than four hours, and soaks in unclean water, this situation is not edible.

It is not recommended to eat crabs that have been dead for two hours, because after the crabs die, they will produce a toxic substance called "histamine" in their bodies. And the longer the crab dies, the more histamine it produces. If you continue to eat this kind of crab, it will cause allergic symptoms such as flushing and conjunctival hyperemia and poisoning symptoms such as dizziness, headache, chest tightness and shortness of breath, and general weakness.

It is not recommended to eat crabs two hours after death, because dead crabs will gradually produce a substance called "histamine", which may cause allergies or poisoning, and the longer the crab dies, the more histamine will be produced in its body.

Eating crabs that have been dead for too long may cause allergic symptoms such as redness of the cheeks, flushing of other parts of the body, and bloodshot mustard of the eyes. In severe cases, there will also be dizziness, headache, chest tightness, shortness of breath, general fatigue, anxiety and irritability.

It is best to eat the crab directly steamed live or just dead, so that the crab will not produce too much histamine in the body, and it will not cause adverse effects on the human body after eating, which is why live crabs are generally tied with cotton ropes and directly put into the pot for steaming.

It's best not to eat it, because it's too long to die, a few months ago I bought the Yangcheng Lake hairy crab in Su Crab Pavilion, and it was good when I brought it, but I raised a few of them, and I was afraid that it would be wasted, so I said that I cooked it and ate it, and then called their customer service ** and asked me not to eat it.

1.Dead crabs are not recommended to eat. Crabs love to eat rotten food, and pathogenic bacteria and toxic substances accumulate in their bodies. Dead crabs can quickly grow a large number of bacteria in their bodies, so they should not be eaten, especially in hot weather.

2.In terms of taste, the crab loses its original umami after it dies. There is also a histidine substance in the crab's body, histidine is easy to decompose, histamine and histamine-like substances can be produced under the action of decarboxylase, and the midgut gland will soon fall apart after the crab dies, and the histidine and digestive enzymes in it will decompose the crab meat.

Therefore, the taste of dead crabs is strange and the taste is greatly reduced.

3.The crab itself is non-toxic, but after the crab dies, after the crab's shell is broken, the protein in the crab's body will breed bacteria, and the infected bacteria in its body will multiply, and the bacteria may produce toxins. Dead crabs are likely to be poisonous.

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

5.If the crab has not been dead for a long time, it can still be eaten if it is refrigerated, remember, it is refrigerated and not frozen, and the sea crab is better than the river crab, because the living environment of the river crab is worse and there are more bacteria.