The crab lives in shallow water and feeds on microorganisms and animal carcasses inside the water. When the crab is alive, the germs inside the body will be eliminated through its immune system and digestive organs, but when the crab is dead, the germs will reproduce in large quantities, and even penetrate into the meat, making it impossible to continue to eat.

How long can you not eat crabs when they are dead

Crabs can't be eaten when they are dead. Crabs have super strong immune ability, in time crabs usually eat food bacteria and viruses are very much, but they are all suppressed by the super strong immunity of the crab, after the crab is dead, or even on the verge of death, the bacteria and viruses in the crab will begin to reproduce in large quantities and breed some biological toxins, which are not good for the body after consumption.

So, you can't eat crabs when they are dead, not even for a little while.

How to judge the crab dead or alive

1, for the crab's dead or alive is very good to identify, the naked eye can obviously see, live crab is very good to move, while the dead crab is not moving.

2, there is a live crab will keep spitting bubbles, not much activity of the crab is estimated to have been on the verge of death, such crabs do not need to buy.

3, if you come across bundled up crabs, to touch its eyes, to see if it will blink, can then is alive, and vice versa that is dead.

Precautions for eating crabs

1, do not eat dead crabs

Crab is a protein-rich food, once the death of a large number of bacterial growth is prone to decomposition to generate necrotizing amines and histamine, after eating the body is not good.

2, do not eat raw crabs

Crab has a carrion, will eat dead animal carcasses, and has been in the mud activities, so the body contains a large number of bacteria, pathogens and parasites, eaten raw is not good for the body.

3, with ginger vinegar juice together

Crab cold, eat with some ginger vinegar juice, to avoid the crab flavor is too cold, resulting in discomfort.

4, not and cold food together

Crab cold, can not and other cold food together, so as not to aggravate the degree of cold in the body, resulting in physical discomfort.

5, not and high tannic acid food together

Crab contains a lot of protein is not suitable and tannic acid content is too high food together, such as: bamboo shoots, persimmons, grapes, hawthorn, etc., because tannic acid will react with the protein, protein precipitation occurs.