Rich in trace elements and vitamins: crab meat is rich in magnesium and high in calcium. For example, the content of calcium in river crabs exceeds that in milk, and some varieties can reach more than 200 mg/ 100 g. In addition, the contents of trace elements such as zinc, selenium and iodine in crabs are also quite high.
Selenium, in particular, is much higher than the level of ordinary meat. From the point of view of vitamins, the vitamin A content of crabs is commendable, which can reach 0.5 to 2 times that of 65438+ eggs, but almost all of them exist in the yellow part of crabs, while the content in white crab meat is almost negligible.
The level of vitamin B group is not much different from that of most fish. The content of vitamin B 1 is lower than that of meat food, and the content of vitamin B2 is slightly higher, but it mainly exists in crab roe, and the content in white meat is lower.
Extended data:
Precautions for eating crabs
1, steamed thoroughly, do not eat raw crabs.
River (lake) crabs feed on animal carcasses or humus, so the body surface, gills and gastrointestinal tract of crabs are covered with various bacteria and sludge. Some people don't get sick because they didn't wash the crabs clean, or because they ate drunken or pickled crabs raw and ate germs or parasites in crabs. Steamed before eating, there will be no such problem.
2, eat "fresh", dead crabs are not suitable for eating.
After the death of Eriocheir sinensis, the rigidity period and autolysis period are greatly shortened, and the bacteria in the crab will multiply rapidly and spread into the crab meat, causing vomiting, abdominal pain and diarrhea. Fresh crab shells are bluish-black, shiny, with full navel and Bai Jie abdomen. But the shell of the dying crab is yellow, and the crab's feet are soft, so it is difficult to turn right.
3, steamed and eaten now, do not store.
If you can't finish eating, the rest must be kept in a clean, cool and ventilated place. When eating, be sure to return to the pot and cook it thoroughly.
People's Daily Online-Health Tips: What is the nutritional value of crabs? Three points for attention in eating crabs