There are many kinds of seafood, including deep-sea fish, shallow-water fish, shellfish, snails, squid and other molluscs, as well as crustaceans such as shrimps and crabs. Because they grow in the sea, their meat quality and nutrition are very different from terrestrial animals, and even if they are also marine organisms, However, nutrition is also different due to different types.
Seafood, fish and meat, shrimp, crab, clams,Seafood direct delivery（海鮮直送）， squid, octopus, squid, clams, oysters, snails, and differences in nutritional value
Fish, shellfish, seafood, poultry, and livestock are also protein-rich foods and contain a variety of vitamins and minerals. The biggest nutritional feature of seafood is that it is rich in iodine and omega-3 fatty acids, and the fat is mainly unsaturated fatty acids. Therefore, seafood is easy to oxidize and spoil and produce strange tastes and should not be left for long. With few exceptions, the vitamin and mineral content of most seafood is slightly lower than that of terrestrial organisms.
Most fish swim intermittently, so they are rich in white muscles and make their muscles appear white; tuna swims longer, so they have more red muscles. Unlike terrestrial animals, the muscles of fish have a layered structure, and the connective tissues are sparse and fragile. Therefore, the meat of fish is very soft and easy to decompose. After being cooked, it can be easily removed with chopsticks. In addition, with the exception of some high-fat fish, fish eggs, belly meat, and processed products, most marine organisms, including shrimp, crabs, snails, and shellfish, have lower fat and calories than terrestrial animals such as poultry and livestock.
Fish and shellfish nutrition decoding
There are many types of fish, and their muscle and fat content vary greatly due to differences in deep sea, shallow water, migratory types and species. For example, mackerel contains 39.4 grams of fat and 14.4 grams of protein, while bigeye tuna contains only 0.1 grams of fat. There are 24 grams of protein. The fat of fish is mainly distributed under the skin and in the connective tissue that separates the sarcoma. The belly of the fish is usually the fattest part, with rich fat and tender meat; the back part of the fish has a rich muscle layer and tender meat, with more fish skulls and less meat; fish The skin is rich in collagen and fat.
On the whole, fish minerals perform better than vitamins. Among vitamins, only vitamin B12 has a higher content. Fish eggs and cod liver are also rich in nutrition, but the cholesterol is relatively high. The cod liver of deep-sea fish is rich in vitamins A and D and is used to make cod liver oil supplements. processed fish products such as dried fish have low water content and concentrated nutrients, so some nutrients are very high. For example, dried small fish and cloves are rich in nutrients such as iron, calcium, potassium, zinc, and vitamin B12, but sodium and phosphorus are the same. It's also very high.
The exoskeleton of shrimp and crab contains soft muscles and internal organs, while shrimp has less internal organs and more muscles, crabs are just the opposite. Its lean tissue is white muscle like fish, but there are more connective tissues than fish, so the meat is firm and elastic. Shrimp and crab have lower calories and fat than fish and are rich in vitamin B12, but the performance of other vitamins is not outstanding. The vitamin B12 content per 100 grams of most shrimp and crab is sufficient to meet the daily needs of the body. In terms of minerals, red worm contains the highest zinc content (10.3 mg), while dried shrimp, dried shrimp, and dried shrimp are rich in nutrients such as calcium, potassium, and iron.