Are there any contraindications for eating crabs What are the taboos for eating crabs?

1. Crab is a kind of cold food, after eating crab, it will make the human gastrointestinal tract too cold, and there is a certain damage to the digestive function of the gastrointestinal tract, if you eat some cold fruits, it will increase the burden on the digestive system, seriously affect the health of the people, so after eating crabs, you can not eat watermelon, melon, melon, grapefruit, mangosteen, etc.

2. Crab is a kind of soft carapace food, this kind of food contains a certain amount of arsenic, as long as it is with vitamin C, a certain chemical reaction will occur, and regular eating will damage the liver, so when eating crabs, it is not possible to eat with kiwifruit, grapes, tomatoes, and oranges.

3. Crabs contain a lot of high protein, and all of them are high-quality proteins, if you drink some fruits containing tannic acid to eat together, it will form a certain reaction in the body, and make the gastrointestinal tract indigestible, if you eat too much, it is particularly easy to cause stomach stones, so crabs can not be eaten with persimmons, apples, grapes.

Crabs are crustaceans whose bodies are protected by a hard shell and breathe by their gills. Taxonomicly, it is the same animal as shrimp, lobster, and hermit crab. The vast majority of species of crabs live in the sea or near the sea, but some inhabit freshwater or land.

They rely on the mother crab to give birth to baby crabs, and each time the mother crab lays a large number of eggs, the number of which can reach more than millions. Although this food is very nutritious, it is also important to pay attention to the method when eating it, and it may not be eaten by everyone. For example, pregnant women or people with allergies should not eat it.

There are four taboos for eating crabs:

1. Crabs should be steamed and cooked thoroughly, and raw crabs should not be eaten.

Crabs feed on dead animals or humus, so their bodies, gills and gastrointestinal tract are covered with all kinds of bacteria and sludge. Eating crabs must be steamed and cooked thoroughly before eating.

2. Crabs should be eaten alive, and dead crabs should not be eaten.

The stiffness period and autolysis period after the death of the crab are greatly shortened, and the bacteria in the crab body will multiply rapidly and spread to the crab meat, causing vomiting, abdominal pain and diarrhea to the eater. The shell of the fresh live crab is blue-black, shiny, the umbilicus is full, and the belly is white. The shell of the dying crab is yellow, and the crab legs are soft, making it difficult to straighten out.

3. Crabs should be steamed and eaten, not stored.

In case you can't finish eating, the rest must be kept in a clean, cool and ventilated place, and you must go back to the pot and cook and steam thoroughly when eating.

1. Avoid eating raw crabs, drunk crabs, crabs, body surface, gills and gastrointestinal tract are covered with all kinds of bacteria and parasites, etc., crabs must be steamed or boiled thoroughly, and generally the water should be heated for 15 minutes after boiling to play a sterilizing role. The traditional crab eating method is steamed and accompanied by ginger vinaigrette, which is scientific, which not only ensures that the bacteria and parasites in the crab are killed, but also ensures that the original taste of the crab is not destroyed.

2. After the crab dies, the bacteria in its body will multiply rapidly and spread to the crab meat, decompose the amino acids in the crab meat, and produce a large number of harmful substances, so eating dead crabs may induce vomiting, abdominal pain, and diarrhea.

In addition, it is better not to buy dying crabs. In addition, crab meat is rich in histidine, and when the crab dies, some bacteria containing histidine decarboxylase can make the histidine decarboxylation group in the crab meat form a large amount of histamine under appropriate conditions. Histamine is a sensitizing substance, which can dilate venules and capillaries, promote increased secretion of mucous membranes and glands, lead to allergic symptoms, and may also cause circulatory failure in severe cases.

3. Three taboos: Cooked crabs stored for a long time are easily contaminated by bacteria, so crabs should be steamed and eaten. In case you can't finish eating, the remaining crabs must be kept in the refrigerator and eaten at the next meal, and must be returned to the pot to be heated or steamed thoroughly when eating. It is recommended not to eat overnight crabs, although heating in the pot can kill pathogenic microorganisms, but can not destroy toxins, and there is still a danger.

4. Don't eat crab gills, crab stomachs, crab intestines, crab hearts, crab gills, crab stomachs, crab intestines, and crab hearts. When the crab shell is opened, the gray-white strips on both sides are the gills of the crab, which are the respiratory organs of the crab, and are in direct contact with the outside world, which is easy to accumulate dirt and heavy metals.

The triangular part located in the front half of the shell, under the eyes, is the crab stomach, and a black strip is the crab intestine, these two parts are the digestive organs of the crab, which contain food and metabolites, and there is also the possibility of accumulating dirt. The crab heart, commonly known as the "hexagonal plate", is located in the middle of the crab roe or crab paste, and is hexagonal in shape, and is considered to be the "coldest" part of the crab.

It is an important part of the circulatory system, and there is more blood left, and its blood composition is quite different from that of the human body, which is easy to cause an immune response.

5. As mentioned earlier, the protein contained in crabs and the cholesterol contained in crab roe are relatively high, and excessive consumption at one time is not conducive to human digestion and absorption.

According to the recommendation of the Chinese Nutrition Society's "Dietary Pagoda for Chinese Residents", the appropriate intake of aquatic products is to eat 40-75 grams (edible part) at a time, which is equivalent to 100-188 grams of crabs in shell, and it is best not to exceed 3 times in a week. A 188-gram crab in the shell is roughly equivalent to a 4-tael large crab.