Crabs are a seasonal delicacy now. It should be noted that crabs must be eaten alive, because crabs are saprophytes. When they are dying or dying, bacteria will rapidly decompose the protein of crabs, resulting in a rapid increase in the contents of cadaverine and histamine, which will lead to poisoning or allergies after people eat them.

Can't eat dead crabs

No matter how long crabs have been dead, it is best not to eat them as long as they are dead, because histamine in dead crabs can easily cause serious gastrointestinal poisoning, so we should not eat dead crabs, and they should be completely steamed. Of course, we need to grasp the heat. Too long time will also lead to the loss of flavor and nutrition.

Matters needing attention

In addition, I want to tell you that even if the dead crab is cooked, the toxin is not easy to be destroyed. Severe food poisoning can cause numbness of limbs, skin allergy, general weakness, and even asthma and dyspnea. When choosing crabs, you can touch the eyes of hairy crabs to see if they blink. You can also see whether crabs spit bubbles in the water, which means that hairy crabs are alive.

Generally speaking, it is best not to eat dead crabs any more, which is likely to cause food poisoning. Even dead crabs can breed a lot of bacteria, so eating dead crabs is not recommended.