Portunus trituberculatus (scientific name: Portunus trituberculatus)

Portunus trituberculatus (scientific name: Portunus trituberculatus) is a crustacean of the family Portunidae and the genus Portunus. The individual is huge, the largest individual can reach 1000 grams, generally 400 grams, and the body width is 200 mm. The body of Portunus trituberculatus consists of three parts: head, thorax, abdomen and appendages. The female's abdomen is a long and narrow triangle when she is a young crab, and becomes oval after mating, commonly known as "round umbilicus, round umbilicus"; the male crab's abdomen is triangular, commonly known as "long umbilicus, pointed umbilicus". After the crab navel is opened, a longitudinal bulge can be seen in the midline, with the intestines connected inside and the anus opening at the end.

Portunus trituberculatus lives in shallow waters offshore, in areas with a water depth of 10-50 meters, and the most densely populated areas with a sandy bottom of 10-30 meters. It is afraid of strong light, and mostly lurks on the seabed during the day, and swims to the water layer at night to look for food. Food; it is ferocious in preying, has a large appetite, and has strong digestion power. It can prey on seaweed, snails, clams with hard shells, fish, shrimps, crabs, etc.; it is distributed in Japan, Korea, the Malay Islands, the Red Sea and China Guangxi, Guangdong, Fujian, Zhejiang, Shandong Peninsula, Bohai Bay, Liaodong Peninsula and other places.

Portunus trituberculatus is a nutritious food with many nutritional values. The following is the general nutritional content of Portunus trituberculatus:

1. The three-tuberculose swimming crab has tender meat, sweet taste and rich nutrition. Scientists measured the basic nutritional components of different parts of Portunus trituberculatus and found that crab meat has the highest protein content, followed by male gonads, and female gonads have the lowest protein content; while the crude fat content of the three is in the opposite order. Crab meat contains 20 kinds of amino acids. Among the essential amino acids, leucine and lysine are relatively high in content. Among non-essential amino acids, glutamic acid has the highest content, followed by arginine and aspartic acid.

2. The main lipid in the muscles of Portunus trituberculatus is phospholipids, with the lowest triglyceride content. The edible part of Portunus trituberculatus is also rich in unsaturated fatty acids. Among them, the unsaturated fatty acid content of female gonads is higher, followed by male gonads, and crab meat is the least. The contents of calcium, magnesium and zinc in the edible parts of Portunus trituberculatus are higher than those of Abalone; the contents of calcium and magnesium in muscles are higher than those in gonads, while the contents of zinc and iron in female gonads are higher than those in muscles and male gonads.

3. Portunus trituberculatus is a treasure that can be used both as medicine and as a tonic. The medicine used can be used as a tonic to treat wasting diseases such as kidney deficiency and strain, neurasthenia, palpitation, insomnia, physical weakness, etc. It has unique effects such as moistening the lungs and nourishing yin, nourishing the brain and improving intelligence, improving human immunity, beautifying the skin, and anti-aging. It is also effective for women with infertility, postpartum agalactia and other diseases. Regular consumption can improve endocrine, enhance metabolism, lower blood pressure, blood lipids, blood sugar, anti-swelling, regulate and improve people's memory and sexual function, promote growth and development, and regulate sexual cycles. , has special effects on treating hormone balance in the body during menopause and improving heart palpitations, insomnia, head weight, irritability, etc. It is a health product suitable for both men and women.

Throughout the ages, many literati have praised the delicious taste of swimming crab. Bai Juyi, a poet of the Tang Dynasty, once said, "The paws of a bear's paw are rotten, but the claws of a seafood crab are made." He compared the claws of a sea crab with a bear's paw.

The Portunus trituberculatus has reached the breeding season. The crab paste and roe are plump and delicious, and the crab meat is delicate and sweet. The cooking method of swimming crab with three warts is usually steaming, and the meat is dipped in ginger-vinegar sauce, which gives it a unique flavor. Fishermen often select plump live crabs, put the crab roe into a bowl, and let it dry in the wind and sun to make "crab roe cakes" with a particularly good flavor. Red paste crab, a delicacy in Ningbo, China, is made by marinating fattened fresh crabs with salt and wine. The red paste crab is properly pickled. The crab paste is bright in color and fragrant and melts in your mouth. The crab meat is delicate, soft, salty and delicious. The delicious three-tuberculose swimming crab is very suitable for pairing with flavor-absorbing ingredients, such as fried rice cakes with three-tuberculous swimming crab. In addition, Portunus trituberculatus can also be dried into crab rice, ground into crab paste, canned, etc.