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Why can't river crabs eat after they die and sea crabs can?
Dead river crabs produce a lot of histamine. Eating dead river crabs can cause histamine poisoning.

Histamine is an allergic poison, which causes allergic food poisoning.

There are bacteria in Eriocheir sinensis. When Eriocheir sinensis dies, bacteria will multiply, decompose crab meat and produce toxins. At this time, bacterial infection is more likely to occur when used.

Sea crabs will not suffer from histamine poisoning. So crabs can't eat when they die. Sea crabs can eat.

Extended data:

Crayfish, crabs, screws, shellfish, fish, etc. may all carry parasites. If eaten raw or undercooked, they are easily infected with parasites.

Pay attention to the following points when eating crabs:

1 Cook the crab thoroughly. Crabs are continuously cooked at a high temperature of 100℃ for 20 to 30 minutes.

2. Don't eat drunk crabs and cold crabs.

3. Choose fresh crabs.

References:

Eating dead crabs can cause poisoning.