Taking Scylla serrata as an example, the nutritional components were analyzed.
The composition of Scylla serrata is rich in protein, and the content of female gonad is as high as 30.98%, which is fresh.
Scylla serrata?
Protein has the highest content. Protein of Scylla serrata has a complete range of amino acids, and the score of essential amino acids is 84.23 ~ 93.58. ?
Scylla serrata is rich in fat and unsaturated fatty acids (UFA). The unsaturated fatty acids in muscle are 74.58%, EPA is as high as 18.04%, and DHA is 13.52%. The content of unsaturated fat in Scylla serrata is very high, especially omega-3 fatty acids, EPA and DHA, which cannot be synthesized by human body. EPA can obviously reduce the values of triglyceride (TG) and cholesterol (TC) in serum, prevent platelet aggregation, delay thrombosis, prevent cardiovascular and cerebrovascular diseases and prostatic hyperplasia, and DHA can promote brain development, enhance brain learning and memory ability, and prevent brain aging. ?
Scylla serrata is a kind of food with high potassium and low sodium, and Scylla serrata is more beneficial to hypertensive patients. The content of Ca in its liver is extremely high, second only to stone snail, shad, dried shrimp, dried shrimp skin and clove fish, and natural organic calcium is easily digested and absorbed by human body. The content of magnesium, iron, copper, zinc, manganese and other essential elements in Scylla serrata is also high. The selenium content in all components of the blue crab is very high, especially in the female gonads.
The fat content of crabs is very low, but the contents of vitamins A, E and B are high, especially the crab yellow is rich in vitamin A, which is beneficial to vision and skin health. Crabs are rich in mineral elements calcium and magnesium. Calcium can supplement calcium to human body, and magnesium plays an important role in the normal operation of neuromuscular and blood sugar conversion. Crab is also rich in zinc, selenium, copper and other essential trace elements, which can supplement the nutritional needs of the human body.
Simply put, crabs are rich in protein and trace elements, which have a good nourishing effect on the body. Crabs also have anti-tuberculosis effects, and eating crabs is of great benefit to the rehabilitation of tuberculosis. Crabs are cold and salty, belonging to the liver and stomach meridian, and have the effects of clearing away heat and toxic materials, tonifying bones and marrow, nourishing tendons and bones, promoting blood circulation and resolving phlegm, promoting diuresis and eliminating jaundice, benefiting limbs, nourishing liver yin and invigorating gastric juice; It has a certain therapeutic effect on congestion, jaundice, lumbocrural pain and rheumatoid arthritis. Crab tastes delicious, but it is also a food with high protein, high purine and high cholesterol. According to the recommendation of China Residents' Dietary Pagoda published by China Nutrition Society on 20 16, the suitable amount of products with one draught is 40g to 75g. It is suggested that each person should not eat more than 4 taels of crabs at a time, and eat less at a time, which will neither cause too much protein nor increase the burden on the digestive system, nor cause too much intake of environmental pollutants in aquatic products.