How to tell if a hairy crab is dead and why dead hairy crabs can t be eaten

Dead hairy crabs don't move, their legs are stiff with their pincers open and open.

Hairy crabs are aquatic products that carry a lot of bacteria. Aquatic products are high in protein and high moisture, especially conducive to the reproduction of microorganisms, and are easy to produce harmful substances to the human body, so you can't eat dead hairy crabs.

Satisfied.

1. Fresh hairy crabs can be eaten immediately after death.

If the live crab bought back has just died, it can be cooked and eaten immediately, because at this time, the bacteria and other microorganisms in the crab have not had time to multiply and produce harmful substances, so there will be no risk of health harm to continue to eat, but if the hairy crab dies for too long, such as more than 2 hours at room temperature, it must not be eaten, and the crab meat will produce histamine and other substances that are toxic to the human body, which cannot be decomposed at high temperatures, and may cause physical discomfort if you continue to eat.

2. In the case of freezing of live crabs, if they are not spoiled, they can be eaten.

If the dead crab is frozen in the refrigerator, the first thing to confirm is whether it is a fresh live crab before freezing to death, if it is a dead crab and then frozen, it cannot be eaten, but if the live crab is frozen to death, the temperature of the frozen layer is low, which can inhibit the reproduction of bacteria, and can keep the crab fresh for about 1-3 months.

3. Mild gastrointestinal discomfort, severe can endanger life safety.

Once the crab dies, the bacteria inside it will multiply rapidly, and produce histamine and other harmful substances in the crab's body, if people eat dead crabs by mistake, these harmful ingredients may cause people to have food poisoning symptoms, such as: vomiting, diarrhea, headache, body temperature rise, and even bloody stool, difficulty swallowing, language disorders, dyspnea and death, etc., so once the dead crab is eaten by mistake, there are any uncomfortable symptoms, you should seek medical attention as soon as possible, so as not to miss the best opportunity.

41. Pinch the shell: The crab shell becomes soft, indicating that it has been dead for a long time.

2. Look at the weight: If the weight of the crab is reduced, it is very empty, which means that it has been dead for a long time, especially frozen crabs.

3. Look at the legs: The crab legs are pulled down, and they are very loose, which also means that they have been dead for a long time.

4. Smell the taste: If you smell the fishy smell of the crab, it means that the crab has spoiled and can no longer be eaten.

Hairy crab has more meat quality, delicious taste, diverse practices, rich nutrition, is a more popular delicacy in autumn, many people will eat hairy crabs, especially during the Mid-Autumn Festival. It is very particular about eating hairy crabs, and dead hairy crabs must not be eaten. So what does it look like for a hairy crab to die?

Let's take a closer look!

1. Touch the eyes Gently touch the eyes of the hairy crab with your fingers to see if it will move.

2. Lift the crab navel Lift the crab navel on the belly of the hairy crab to see if the hairy crab reacts.

3. Flush cold water If the above methods do not work, put the hairy crab under the faucet to rinse in cold water for 2 minutes to see if the hairy crab can "wake up", if it can't wake up, it means that the crab has completely died.

Hairy crabs are creatures that must be eaten alive!

After the death of hairy crabs, bacteria and harmful substances will be quickly produced in the body, which will damage human health, so dead hairy crabs should not be eaten.

Dead hairy crabs must not be eaten, high-protein crab meat, yellow, paste will quickly decay and breed bacteria, it is difficult to kill easily at high temperatures, eating hairy crabs with bacteria will produce a lot of "uncomfortable" reactions, you can think of uncomfortable reactions will be accompanied by most of them! So don't make yourself uncomfortable for a hairy crab!

Put in the refrigerator. 1. After the live hairy crab is bought, do not untie the crab rope on the crab body, and do not clean it.

2. Put the hairy crab yard on the tray, and then put the tray in the refrigerator freezer, and the temperature is controlled at 5-8 degrees Celsius.

3. Subsequently, take a wet towel, the humidity is about the level of wiping the face, and cover the back of the hairy crab with the towel.

4. With this method, hairy crabs can survive in the refrigerator for about a week.

In this way, we can artificially create a state similar to "dormant" for hairy crabs. Hairy crabs are in a low temperature environment, and they are helped to not move, the need for energy is low, the loss caused is also low, and the wet towel on the back gives them the water they need to survive, so the hairy crabs can survive in the refrigerator.

However, although the energy consumption of hairy crabs in the refrigerator is very low, it will definitely be lost in order to maintain life, so hairy crabs will inevitably become thinner, and the taste is definitely not as good as fresh hairy crabs.

It is also necessary to remind that the refrigerator is not a safe, and if you use the above method to store the hairy crab in the refrigerator, there is still a possibility that the hairy crab will die, and if the crab is found to be dead, then it cannot be eaten.

1 Subject to availability.

If the hairy crab is stored in the refrigerator to die, then the low temperature environment can inhibit the growth and reproduction of microorganisms, so it can generally continue to eat within 1-2 hours after death.

However, if the hairy crab is stored at room temperature and dies, then the microorganisms will grow and multiply rapidly in the hairy crab and produce toxic substances that are harmful to the human body, so for the sake of health, it is not recommended to continue to eat the hairy crab once it dies.

2. Generally there is not much change.

If the hairy crab dies for a short time, then there is generally not much change in appearance, but if the death time has been relatively long, then the surface of the hairy crab will look very gray and dull, so if you want to judge the life or death of the hairy crab, you can't judge it from the color.

Generally speaking, if it is a live hairy crab stool, then the easiest way is to touch its eyes slightly, and if the eyes still move, then it proves that the hairy crab is alive.

3 can eat. The temperature of the freezer is generally relatively low, about minus 18, which can inhibit the activity of most enzymes and microorganisms at this positive and virtual temperature, and can maintain the taste of food, so hairy crabs can continue to eat after freezing, but it is recommended to eat as soon as possible to avoid nutritional decline.

And it is best to freeze the hairy crab while it is still alive, if the hairy crab is already dead, then it is not recommended to continue to freeze it.

4. Compared with fresh hairy crabs, frozen hairy crabs may not be so tender in taste, so it is generally not recommended to steam, but to stir-fry, or make spicy crabs to eat.

Moreover, it is not recommended to cook hairy crabs after thawing, otherwise in the process of thawing, the water and nutrients contained in them may be lost, and the coarse burning will also affect the nutrition and taste of hairy crabs.

Hairy crabs that are dead are not edibleIf the hairy crab dies for more than 2 hours at room temperature, it is not recommended to eat, and if it is a hairy crab that dies in the frozen state (not refrigerated), it can be stored for a longer time, but not more than 3 months.

It is advisable to eat river crabs alive, and at room temperature, as the river crabs die, their bodies will continue to produce toxins. This is because crabs, including hairy crabs, like to eat animal carcasses and rotting food, and their digestive tracts contain a large number of pathogenic bacteria and other harmful substances that are harmful to humans. In addition, crabs contain more histidine, which will be broken down into histamine harmful to humans by histamine dehydrogenase carried by some bacteria after death.

How to preserve hairy crabs.

1. Save the bathtub.

Pick out the vigorous hairy crab to preserve, gently pour the hairy crab into the bathtub, pour a certain amount of water into the bathtub, the amount of water to the hairy crab to stand up on the eight legs can breathe on the water surface, and then according to the storage time and the number of hairy crabs put in small fish and shrimp to feed.

2. Plastic basin preservation.

Pick out the energetic hairy crabs to preserve, spread the hairy crabs into the plastic basin in turn, do not stack, and then add water to cover half of the body of the hairy crab, do not cover the crab with water, avoid the death of the hairy crab due to lack of oxygen, open the plastic basin and place it in a cool place, pay attention to observe the state of the hairy crab every day, and eat the crab with insufficient vitality in time.

Hairy crabs that are dying or have just died can be eaten, look at the lower part of the crab's navel, and if it does not turn black, you can eat it. If you die for a long time, the belly button will turn black, and the rich nutrients inside, such as protein and fat, will become the nutrients of bacteria, resulting in a large number of bacterial breeding, and at the same time decompose proteins into cadaverine and histamine, cadaverine and histamine are toxic, which will lead to poisoning, and histamine will cause allergies, numbness of the limbs, allergies, general weakness, and even asthma, dyspnea.

1. Crabs can't be eaten after they die: After crabs die, they will cause the reproduction of many pathogenic microorganisms and parasites, such as eating dead crabs with slippery fruits, which will cause a high incidence of intestinal infectious diseases and cause diarrhea that endangers health.

2. The protein and other nutrients have been decomposed and consumed, and if you can't eat it to supplement nutrition, its nutritional value will be greatly discounted.

3. The components in crabs, especially the decomposition of proteins, can cause allergies in the body, and the light cracks will cause itching, and the heavy ones will cause allergic asthma and endanger the body.

Dead hairy crabs are not recommended.

When a hairy crab is dying or dying, the rich nutrients inside, such as protein and fat, will become nutrients for bacteria, causing a large number of bacteria to grow, and at the same time decompose proteins into cadaverine and histamine. Cadaverine and histamine are toxic and can cause poisoning, and histamine can cause allergies, numbness of the limbs, allergies, general weakness, and even asthma and dyspnea.