2. Rich in whole protein. Fish contains a lot of protein, such as yellow croaker 17.6%, hairtail 18. 1%, mackerel 2 1.4%, silver carp 18.6% and carp/kloc-. Protein contained in fish is completely protein, and the quantity and proportion of essential amino acids contained in protein are most suitable for human needs and are easily digested and absorbed by human body.
3. Low fat content, mostly unsaturated fatty acids. The fat content of fish is as low as 1, and most of them are only 1%-(4)%, such as yellow croaker 0.8%, hairtail 3.8%, mackerel 4%, silver carp 4.3%, carp 5% and crucian carp1./kloc- The fat of fish is mostly composed of unsaturated fatty acids, and the carbon chain of unsaturated fatty acids is long, which can lower cholesterol.
4. The content of inorganic salts and vitamins is high. Both marine fish and freshwater fish are rich in sulfur and also contain inorganic salts such as phosphorus, calcium and iron. Fish also contains a lot of vitamin A, vitamin D, vitamin B 1 and nicotinic acid. These are all nutrients that the human body needs. In addition, the muscle fiber of fish is relatively short, the protein tissue structure is loose, and the water content is relatively high. Therefore, the meat is tender, more tender than the meat of livestock and poultry, and easier to digest and absorb. It can be seen that fish has the advantages of high protein, low fat, rich in vitamins and minerals, good taste and easy digestion and absorption.