It is found that the infection rate and infection degree of Paragonimus sinensis larvae metacercaria in live crabs are very high. Paragonimus sinensis parasitizes in the lungs, stimulates or destroys lung tissue, and can cause cough and even hemoptysis. If it invades the brain, it will cause paralysis. According to experts' investigation, the infection rate of paragonimiasis is 20% after eating crabs slightly heated, and the infection rate of paragonimiasis is as high as 55% when eating pickled crabs and drunken crabs.
The infection rate of paragonimiasis is as high as 7 1% when eating raw crabs. The resistance of paragonimiasis metacercariae is very strong, and it usually takes 30 minutes in water at 55℃ or 48 hours in 20% salt water to kill it. If you eat crabs raw, you may be infected by Vibrio parahaemolyticus. When Vibrio parahaemolyticus invades the human body in large quantities, infectious poisoning will occur, showing symptoms such as intestinal inflammation, edema and congestion.
Pregnant women are not allowed to eat crabs, and they should not eat crabs throughout pregnancy.
Crab meat is delicious and nutritious, containing a lot of protein and fat, and more substances such as calcium, phosphorus, iron and vitamins. Every 500g of crab contains 49.6g of protein, 9.3g of fat, 27.2g of sugar, 0/.088mg of phosphorus/kloc-,33.6mg of iron and a proper amount of vitamin A, etc. It is both a tonic and a delicacy, and is very popular with people. It is often the main course of a wedding banquet. But it is not suitable for pregnant women.
Crab is not only a delicacy, but also a medicine. Common ones are hairy crabs, hairy crabs, sea crabs, lake crab, river crabs and river crabs. Crabs are mainly used for food, and most of them are river crabs.
"Supplementation of the Pearl Capsule" says that the crab governs the heat and binds the chest, the yellow can turn the paint into water, and the claw can break the blood and have an abortion. It is recorded in "The Solution of Leigong's Canned Medicine" that the crab is responsible for dispersing blood and breaking knots, benefiting qi and nourishing essence, and removing chest heat and boredom.
Stamping paint sores can treat traumatic injuries, broken tendons and fractures, congestion and swelling, postpartum congestion and abdominal pain, dystocia and retained placenta. 60 grams of crab claws, supplemented by yellow wine, decocted with water, and then added into donkey-hide gelatin, which is the medicine for inducing abortion.
In view of the above medicinal properties, pregnant women should not eat more crabs. If they breastfeed their babies during confinement, it may also affect their babies. Pregnant women with habitual abortion should be taboo.
Extended data:
Crab (páng xiè): Animal kingdom, Arthropoda, Crustacea, Soft Crustacea, True soft armor Subclass, Decapoda, Gastropoda, Anura. It's a crustacean. Its body is protected by a hard shell and it breathes through its gills. Taxonomically, it is the same kind of animal as shrimp, lobster and hermit crab.
Most kinds of crabs live in the sea or offshore areas, and some live in fresh water or land. They rely on the mother crab to give birth to small crabs, and every time the mother crab will lay a lot of eggs, the number can reach more than millions. Crabs rely on the geomagnetic field to judge their direction. The number of such biological genetic materials is complex and has great differences, often as many as 100 pairs.
Common crabs are hairy crabs (river crabs, hairy crabs, clear water crabs) and swimming crabs. China is rich in crab resources, among which the hairy crabs produced in Gucheng Lake, Taihu Lake, Gaoyou Lake, Yangcheng Lake, Crab House, Xinghua and Hongze Lake in the lower reaches of the Yangtze River are the top grade. ?
On March 5, 20 18, the consumption warning of CCTV on March 3 15 was released. The arsenic in crabs and tomatoes in human gastric juice will not be converted into arsenic.
Body characteristics:
Although the crab is small, it is all-sided. After removing the hard shell of the crab, we can find that the body part of the crab is protected by a shell. These shield-like shells are called carapace by biologists.
Crab body is symmetrical, which can be divided into forehead area, eye area, heart area, liver area, stomach area, intestine area and gill area. Both sides of the crab's body are connected by appendage. The appendages of the head are called tentacles, which have the functions of touch and smell. Some appendages have the function of mouth, which is used to tear food and send it into the mouth.
Crab chest has five pairs of appendages, which are called pectoral feet. A pair of appendages at the front are equipped with strong claws, which can be used for foraging. The other four pairs of appendages are the feet of crabs. The crabs rely on these four pairs of appendages to walk and move. They walk in a unique and interesting way, and most of them walk sideways instead of straight ahead.
Except for monks and crabs, they walk straight. Based on the characteristic that the two feet at the tail of crab seldom participate in walking, a 6-foot lateral moving walking mechanism was developed by imitating the walking mode of crab, and its motion characteristics were studied to meet the requirements of walking on rigid ground and soft ground involved in agricultural production.
References:
Baidu encyclopedia-crab