The nutritional value of hairy crabs

Hairy crabs are a type of river crab and they are known as mitten crabs. In the north of China, from Liaohe River to Zhujiang River, it is widely distributed on long coastlines, of which the output of the Yangtze River is the largest and the taste is the most delicious. In general, the crabs refer specifically to the Chinese mitten crab in the Yangtze River system. Now introduced to all major lake areas have cultivated and raised past the hairy crabs in the Yangtze River estuary near the sea seedlings, grow into young crabs, against the Yangtze River migration, growing in the lower reaches of the Yangtze River in the vicinity of the Hu River port. The names of hairy crabs originate from the Wu dialect.

Hairy crabs are rich in nutrients. According to the "Compendium of Materia Medica," it is reported that crabs have the effects of Shujinyiqi, Liweixiaoshi, Tongluo, scattered heat, and scattered blood stasis. Crab meat is salty and cold, with heat, phlegm, and nourishing yin. It can treat bruises, tendon fractures, and allergic dermatitis. Crab shell calcined ash, transferred to honey, external application can cure wasp sting or other unknown swelling. Crab meat is also a natural tonic for children. Regular consumption can supplement high-quality protein and various trace elements.

Crab meat contains a variety of vitamins, including vitamin A higher than other terrestrial and aquatic animals, vitamin B2 is 5-6 times that of meat, 6-10 times higher than fish, 2-3 times higher than eggs . The content of vitamin B1 and phosphorus is 6-10 times higher than that of ordinary fish. The edible portion of each crab hairy crab contains 17.5 g of protein, 2.8 g of fat, 182 mg of phosphorus, 126 mg of calcium, and 2.8 mg of iron. In addition to the rich calcium, crab shell also contains erythromycin and cefradine. Chinese medicine has a long history of understanding the medicinal value of crabs. According to the “Sample of Living with the Interest” records: “Mending bone marrow, nourishing liver and yin, filling stomach juice, reinforcing muscle and promoting blood circulation, and treating cured kidneys”. In modern times, the “Chinese Dictionary of Medicine” stated that its functions and indications were: “Heat, scattered blood, continued renewal, injury to bones, bruises, paint sores, burns”.

Crab is delicious and delicious. It is well known. This delicious taste comes from the nutritional value of crabs. In edible parts of crabs, 80 g water per 100 g, protein 14 g, fat 2.6 g, carbohydrate 0.7 g, calcium 0.141 g, phosphorus 0.191 g, iron 0.08 g, vitamin A230 international unit, riboflavin 0.0051 g etc. Muscles contain more than 10 free amino acids, of which glutamate, proline, and arginine are abundant.

Hairy crabs are also rich in a substance called Astaxanthin, which is a carotenoid. It is the main pigment of crustaceans such as shrimp, crab and salmon. It is a maroon-brown powder with a melting point of 224°C. It is insoluble in water and soluble in ethanol. Most organic solvents, such as propylene glycol, are easily destroyed by light, enzymes, heat, and oxides.

Protein is the material basis of all life activities such as human growth, development, reproduction, and inheritance. There are 20 kinds of amino acids in proteins, and there are more than 10 species in crabs. Therefore, post-operative and post-illness chronic obsessive diseases People who consume large amounts of protein and need nutritional supplements are very helpful.

In addition, crabs contain more vitamin A, which is helpful for the keratinization of the skin. For children's rickets, osteoporosis in the elderly can also play a role in calcium supplementation.