1. Pinch
Pinch the back of the crab with your thumb and index finger and shake it gently. The crab whose claws droop and sway is a dead crab, and the crab whose claws are firm and swing on its own is a live crab. crab.
2. Tease
You can tease the crab's eyes with your hands. If it responds immediately, it means it is full of energy; or turn the crab over with its belly facing the sky. If it can respond quickly, Turning the body over indicates that the crab has strong vitality, otherwise it indicates that the crab has poor vitality.
3. Look
Look at the back of the shell, which is black and green, with luster, and the flesh is thick and strong; look at the tail end, the navel protrudes, and red appears on both sides of the crab navel ( Commonly known as "red seal"), it is generally full of fat and fat; if the hair on the crab's feet is thick, the crab's feet are old and healthy; if there is no hair on the crab's feet, the body is weak and weak.
4. Try
If conditions permit, put the crab into a basin of water, and the crab that will foam is a live crab.
Extended information
Benefits of eating crabs
1. Anti-infection and promote wound healing
Crabs contain a large amount of protein and most of them Mainly made of high-quality protein, these high-quality proteins also contain amino acids, which can increase lymphocyte immunity, promote wound healing, and fight infection.
2. Detoxification effect
Arginine can participate in energy metabolism and detoxification in the body. Eating crabs in moderation can promote the body's energy balance and play a good role in excreting toxins in the body. Therefore, patients with constipation can eat more crab meat.
Do not eat too much crabs. Because crabs are cold foods, excessive consumption will affect gastrointestinal health and induce symptoms such as diarrhea.
3. Prevent tumors
Crab meat contains a large number of nutrients, of which vitamin A and vitamin E have the highest content. These two vitamins can protect mucosal epithelial tissue, soften blood vessels and resist aging.
Crabs also contain a large amount of selenium, with the selenium content in every 100 grams of crab being as high as 56.7 micrograms. Foods high in selenium can improve the body's immunity and can also prevent tumors and fight cancer.
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