Crabs can't be eaten when they are dead. Once the crab dies, the bacteria in the body will rapidly multiply and decompose the crab meat, and the oxyacids will decompose to produce histamine. Histamine is a toxic substance. With the prolongation of si death time, more and more histamine is accumulated in crabs, and more and more toxic gases are produced. Even if the crab is cooked, this toxin is not easy to be destroyed. If people eat such si crabs, it will cause food poisoning. The common manifestations are nausea, vomiting, abdominal pain and diarrhea. In severe cases, dehydration, electrolyte disorder, convulsion, even shock, coma and septicemia may occur. When picking crabs, everyone should try to pick fresh ones, which are delicious and healthier.

Crabs can't be eaten if they are si. After death, people will multiply a lot of bacteria, decompose and produce toxic substance histamine, which will cause toxic reaction if eaten. Therefore, it is not recommended to eat si crabs.

A cooked crab that has not been eaten for a long time.

Stored cooked crabs are easily contaminated by bacteria, so crabs should be burned and eaten now, not stored. In case you can't finish eating, the rest must be kept in a clean, cool and ventilated place (preferably in the refrigerator). When eating, be sure to return to the pot and cook it thoroughly.

2/5

Do not eat too much.

Even if you are greedy, you should endure it: because crab meat is cold, you can't eat more. People with spleen and stomach deficiency and cold should pay special attention to avoid abdominal pain and diarrhea. Abdominal pain and diarrhea caused by eating crabs can be taken with 15g warm Chinese medicine perilla, 5~6 slices of ginger and water.

3/5

Don't drink tea and eat.

Avoid drinking tea and water when eating crabs and within 1 hour after eating crabs. Because boiling water will dilute gastric acid, tea leaves will solidify some components of crabs, which is not conducive to digestion and absorption, and may also cause abdominal pain and diarrhea.

4/5

Not suitable for eating with persimmons.

It should be noted that crabs and persimmons cannot be mixed. Because tannic acid and other ingredients in persimmon will coagulate the meat protein in crab, the coagulated substance will ferment and rot if it stays in the intestine for a long time, causing vomiting, abdominal pain, diarrhea and other reactions.

5/5

It is not advisable to chew.

Pay attention to the four clean-ups when eating crabs. First, clean the crab's stomach. Crab stomach, commonly known as crab urine bag, is a triangular bone bag in the center of the front edge of the back shell, which contains dirty sand; Second, we should eliminate the crab intestine, that is, a black line from the crab stomach to the crab navel; Third, clear the crab heart, commonly known as hexagonal plate; Fourth, we should remove the crab gills, that is, two rows of soft things like eyebrows that grow in the crab abdomen, commonly known as crab eyebrows. These parts are dirty and have no edible value. Don't chew them indiscriminately to avoid food poisoning.