Scylla serrata is a crustacean belonging to the genus Scylla of the family Scyllidae and the order Decapoda and the order Portunidae.

Scylla serrata is a crustacean belonging to the genus Scylla of the family Decapoda, Portunidae, and family Scyllidae; the head and breastplate are green in color, wider than long; the back is smooth with a bulge, and there is an obvious H-shaped concavity between the stomach area and the heart area. mark; there are four triangular teeth on the forehead, nine teeth on the front edge of the cephalothorax, the first tooth is triangular, large and protruding, and the last tooth is sharp and protruding; the claw foot is smooth, with three teeth on the front edge of the long segment and two on the rear edge. There are three teeth; the posterior edge of the metacarpal segment of the swimmer is smooth and toothless; the first appendage of the male is thick and gradually sharp at the end, and the end of the telson is blunt and rounded. Blue crab is also known as blue crab.

Scylla serrata is distributed in Fujian, Guangdong, Guangxi, Hainan, and Taiwan in China; it is also distributed in Japan, Philippines, Indonesia, Australia, Solomon Islands, Fiji Islands, New Caledonia, Thailand, Mauritius, South Africa, and the Red Sea.

Scylla serrata is the largest crab in the family Portunidae. It has rich meat, delicious taste and high nutritional value. It is a famous edible crab in the Indo-Western Pacific region and is also one of China's important fishery resources. In addition to being edible, it is also used for medicinal purposes. Its carapace can be used to produce chitin, which is an important raw material for medical, textile, cosmetic and other industries.

Scylla serrata has certain nutritional value. The following is the general nutritional content of Scylla serrata:

1. Each component of Scylla serrata is rich in protein, of which the female gonad content is as high as 30.98%, ranking the highest among fresh products. Scylla serrata has a complete range of protein amino acids, with an essential amino acid score of 84.23-93.58.

2. Scylla serrata is rich in fat and unsaturated fatty acids (UFA). The UFA of the muscle reaches 74.58%, which is higher than the 65.61% of the swimming crab muscle and the 74.3% of the mantis shrimp head. The polyunsaturated fatty acid (PUFA) is as high as 47.83%, which is nearly 10% higher than the 38.43% of the swimming crab. The 51.5% of mantis shrimp heads is slightly lower; the EPA is as high as 18.04%, and the DHA is 13.52%, which is equivalent to the 15.21% and 17.69% of Portunus trituberculatus, the 15.75% and 13.96% of mantis shrimp heads, and commercial deep-sea fish oil products. The UFA of female gonads is also as high as 70.30%, the UFA of male gonads is 62.48%, and the lowest UFA of liver is also 58.32%, which are higher than that of Portunus trituberculatus. Scylla serrata has a high content of unsaturated fat, especially omega-3 fatty acids EPA and DHA, which cannot be synthesized in the human body.

3. Scylla serrata is a high-potassium and low-sodium food, so it is more beneficial to patients with high blood pressure. Its liver calcium content is extremely high, second only to rock snail, dace, shrimp, shrimp skin and clove fish, and the natural organic calcium is easy to digest and absorb by the human body. The content of other essential elements such as magnesium, iron, copper, zinc, and manganese in Scylla serrata is also high. Selenium content is high in all components of Scylla serrata, especially the female gonads.

4. The mass ratio of gonads to edible parts: females account for 16.52%, while males only account for 1.83%. The protein content of female gonads (paste) is 73.95% higher than that of males, EAA/TAA is also 9.01% higher, especially the tryptophan content is 3.75 times higher. In terms of fat content, female gonads are 11.42 times that of males, and UFA is also 12.52% higher. Only in terms of PUFA content and EPA and DHA content, male gonads are 40.57%, 90.0%, and 86.2% higher than females. In terms of the content of essential inorganic elements, female gonads have higher levels of most elements, especially selenium, which is 2.24 times that of male gonads. But the cholesterol in female gonads is 4.97 times higher than that in male gonads. For crabs as a whole, the UFA, especially EPA, content in their muscles, which account for about 59.30% of the edible part, is quite high. The female gonads, which account for 16.52% of the edible part, and the liver, which account for about 10.96%, have very high UFA, especially EPA, contents. Very high.

5. Scylla serrata also has medicinal value. The crab meat clears away heat and dissipates blood, nourishes muscles and replenishes qi, and can treat muscle and bone damage, scabies, lacquer sores, and burns. Crab claws can break blood and eliminate accumulation, and can treat postpartum abdominal pain due to accumulation of blood. ; Crab shell attacks poison and removes blood stasis, and can cure blood stasis, breast pain, and chilblains.

To sum up, Scylla serrata is rich in protein, has a complete range of amino acids, contains a variety of monounsaturated and polyunsaturated fatty acids, and is rich in inorganic elements, especially selenium and calcium. It is a nutritional value Higher seafood.

Blue crab is a common crab with delicious meat and unique flavor. Here are a few common ways to cook blue crab:

1. Steamed blue crabs: Put blue crabs into a steamer, sprinkle with onion, ginger, garlic and other seasonings, and steam for about 10-15 minutes, or until the crab meat is cooked. This cooking method preserves the original flavor of blue crab.

2. Spicy fried blue crab: Boil the blue crab first, then peel off the shell and keep the crab meat. Add onion, ginger, garlic, chili, bean paste and other seasonings to the wok and stir-fry until fragrant, then add blue crab meat and stir-fry evenly, and finally add an appropriate amount of salt and other seasonings.

3. Crab meat soup: Boil blue crabs, peel off the shells, take out the crab meat, and keep the crab shells. Boil the crab shells with other ingredients (such as ginger, green onions, carrots, etc.) to make a stock. Then put the crab meat into the soup stock, add appropriate seasonings and vegetables, and cook to make a delicious crab meat soup.

4. Grilled blue crab with black bean sauce: Boil the blue crab, peel off the shell and take out the crab meat. Add an appropriate amount of oil to the wok, stir-fry the ginger, garlic and tempeh, then add the crab meat and stir-fry evenly. Finally, add an appropriate amount of soy sauce, sugar and other seasonings, stir-fry evenly so that the crab meat can fully absorb the juice.

These cooking methods are just some of the common ones, and you can innovate and experiment based on your personal tastes and preferences. No matter which method you choose, make sure the blue crab is cooked, fresh, and consumed in moderation based on your personal health and dietary needs.