Cod picture
Cod Cod Cod produced on both sides of the North Atlantic, generally inhabiting near the bottom, and distributed from the nearshore to the deep sea. It is a precious edible fish, and its liver can be used to make cod liver oil. It has three dorsal fins, two anal fins and a palatal whisker. Body color is diverse, from light green or light gray to brown or light black, and can also be dark red to bright red; There are black spots on my body. Generally speaking, the weight of captured individuals can reach 1 1.5 kg (25 lbs), but the largest can reach 1.8 m (6 ft) long and 9 1 kg (20 1 lb). Feeding on other fish and invertebrates. It is a gluttonous migratory fish and eats a lot. The blackhead cod found in the eastern and western North Pacific is similar to Atlantic cod, but smaller, with a maximum of 75 cm (30 inches) and mottled light brown and white lateral lines.
Nutritional value of cod pictures
Cod meat is thick, with few thorns and sweet meat. Protein accounts for 16.8% in cod meat, which is higher than that of salmon, pomfret, shad and hairtail, while the fat content in cod meat is only 0.5% like that of shark, which is 7 times lower than that of salmon and 7 times lower than that of hairtail. Every100g of cod contains 88kcal calories, 20.4g of white matter, 42mg of calcium, 84mg of magnesium, 2.7mg of nicotinic acid, 0.4mg of vitamin A/kloc-0, 0.2mg of carotene/kloc-0, 32 1 mg of potassium, 232mg of phosphorus. The proportion of these nutrients in cod liver oil is the best proportion of the amount needed by human body every day. Therefore, the Nordic people call it a "nutritionist" at the dinner table.
Nutritional value of cod pictures
1, protein and amino acids: Cod fat contains nucleoprotein of globulin, albumin and phosphorus, and also contains a variety of amino acids necessary for children's development, the proportion of which is very close to the needs of children, and it is easy to be digested and absorbed by people. It also contains unsaturated fatty acids and calcium, phosphorus, iron and B vitamins.
2. Magnesium: Fish is rich in magnesium, which has a good protective effect on the cardiovascular system and is conducive to preventing cardiovascular diseases such as hypertension and myocardial infarction.
3. Vitamins A and D: In addition, cod liver oil is abundant and rich in vitamins A and D, which is the raw material for extracting cod liver oil.
4. Soluble calcium: a small molecular peptide extracted from cod by modern bioengineering and enzyme engineering technology, which is rich in soluble calcium, has high biological safety and is easily absorbed by human body.
5, fat: Silver cod contains a lot of fat, the skin is black or gray-black, the meat is pure white, and the oil is rich. The meat tastes white, thin and tender. Many countries regard silver cod as the main food fish.
6. Natural vitamin D: Natural vitamin D in cod liver oil can help children absorb calcium better and correct calcium deficiency in children, so it plays a great role in the development of children's bones and height. At the same time, cod liver oil has certain preventive and therapeutic effects on osteoporosis in the elderly.
7.DHA: DHA contained in cod is an important part of retina, and DHA is recognized as an important nutrient for improving intelligence and promoting brain development. Supplementing cod liver oil to growing children and adolescents is helpful to activate cells and promote brain development.
The efficacy and function of cod pictures
Meat: promoting blood circulation and removing blood stasis; Swimming bladder: blood and hemostasis; Bone: cure beriberi; Liver oil: healing sores, clearing away heat and diminishing inflammation. Cod liver oil (oil content 20~40%) can be extracted from cod liver oil, which is rich in vitamin A and vitamin D. Cod is a nutritious food suitable for all ages because of its low fat, high protein and few thorns. Cod has the advantages of high nutrition, low cholesterol and easy absorption by human body.
1. Inhibition of bacterial reproduction: Cod liver oil can inhibit Mycobacterium tuberculosis, and its concentration of unsaturated acid1100000 can prevent bacterial reproduction. Cod liver oil can also kill bacteria in infected wounds. Ointment made of cod liver oil can quickly liquefy gangrenous tissue.
2. Hypoglycemic effect: Cod pancreas contains a lot of insulin, and 1kg pancreas can extract 12000IU insulin, which has a good hypoglycemic effect and is used to treat diabetes.
3, good for cardiovascular: it can soften and protect blood vessels, and has the effect of reducing blood lipids and cholesterol in the human body.
4. Low temperature tolerance: There is a special biochemical substance called antifreeze protein in the blood of Antarctic cod, which is working. Antifreeze protein has antifreeze effect because its molecules have swelling properties, as if it has a surface area that is easy to interact with water or ice, thus reducing the freezing point of water and preventing body fluids from freezing. Therefore, antifreeze protein gives Antarctic cod amazing low temperature resistance.
5. Enhance immunity: Cod is rich in nutrients, which can increase the concentration of serum immunoglobulin IgG and IgM, enhance the respiratory tract clearance and phagocytosis defense functions, and thus enhance the disease resistance of the body and respiratory system.
6, antibacterial and anti-inflammatory: Cod can significantly improve the resistance of nasal mucosa, enhance the physique of patients with rhinitis, so it can reduce the onset of inflammation such as rhinitis and relieve the symptoms of rhinitis.
7. Prevention and treatment of vitamin A deficiency: Vitamin A deficiency will lead to skeletal retardation in children, affect the development of tooth enamel cells and destroy epithelial tissue structure; In addition, low immune function can also cause various infections of respiratory tract, digestive tract and urinary tract. Appropriate supplementation of cod liver oil can promote epithelial differentiation and help maintain the health of skin and mucosa.
8. Regulating blood lipid: Cod is rich in nutrients, among which vitamin A and vitamin D are indispensable nutrients for human body. They can reduce the concentration of low-density lipoprotein in blood and increase the concentration of high-density lipoprotein.
How to distinguish true cod from false cod
1, depending on the price:1A catty of cod fillets on the market in 0 yuan can't be real cod; Authentic silver cod is generally more than 100 yuan a catty.
2. Asking about the place of origin: Consumers should ask about the place of origin when buying cod. Silver cod and peace cod are mostly produced in Canada, Russia and other countries, and the meat quality is relatively tight, which is commonly used in restaurants. Silver cod in China is mainly distributed in the Yellow Sea and the northern part of the East China Sea. The main fishing grounds are in the north of the Yellow Sea, east-southeast of Shandong Higher Education, south of the island and south of the East China Sea.
3, taste: the real silver cod is light in color, sweet and smooth in taste, and melts in the mouth. Oil fish, on the other hand, is hard and dull. It tastes meaty after frying and tastes greasy. After cooking, the meat is thick and the taste is poor.
4, look at the fish bones: the real silver carp "fish tastes greasy and tender." Although there are many cooking methods of silver cod, most of them need to remove the bones of silver cod in the formal practice, so generally the silver cod served on the table can be swallowed. On the other hand, if the bones are preserved, most of this silver cod has a fishy smell. There will be a yellowish or reddish line in the middle of oily fish, but the real cod doesn't. The long and narrow ones are mostly fakes.