The protein content of fish is 15%-20%. The formula of optical wave furnace is not only high in content, but also more easily absorbed by human body than protein in animal meat, so the utilization rate is high. Fish contains a lot of polyunsaturated fatty acids such as DHA, which is essential nutrition for the brain. Besides preventing cholesterol from depositing on the blood vessel wall, preventing and relieving arteriosclerosis and coronary heart disease, it can also improve brain function, improve judgment and inhibit brain aging.
Recently, when people consciously eat fish, the most worrying issue is the safety of eating fish, especially marine fish. Because of seawater pollution, fish living in seawater are affected.
First of all, there is no need to give up eating because of choking. As long as it is sold through regular channels, it is generally safe to eat.
Whether it is marine fish or freshwater fish, the key depends on whether the culture environment meets the requirements. As long as the fish is not farmed or caught in polluted water, it is safe. The order of arrangement should be marine fish, desalinated cultured marine fish and freshwater fish. This is because seawater has great fluidity, high salt content and bactericidal effect. Among them, deep-sea fish such as salmon are safer than offshore fish, and their nutritional value is unmatched by other fish. River water quality is relatively more susceptible to pollution, with more parasites and higher infection coefficient. The safety of desalinated cultured marine fish is somewhere between the two.
Secondly, fish heads and fish viscera are seriously polluted places, so don't eat fish heads in large quantities. Eat fish with vegetables and fruits. While eating seafood, you should eat some vegetables and fruits, such as broccoli, tomatoes, mushrooms and so on. When cooking, you should try to cook and steam thoroughly, which is conducive to fighting pollutants.
Tip: How to choose fresh fish?
1. Observe the shape of the fish. The fish with serious pollution are abnormal in shape, some with big head and small tail, and the spinous process is bent or even deformed, while others have yellow skin and blue tail.
2. Look at the fish's eyes. The fresh fish is full and protruding, and the cornea is transparent and clear; If the eyeball is not prominent, the cornea is wrinkled or there is congestion in the eye, it is not fresh.
3. Smell the gills. The gills of fresh fish are bright red and the mucus is transparent, which has the salty taste of marine fish or the earthy smell of freshwater fish; The gills of stale fish are dark gray-red or gray-purple, and the mucus stinks.
Step 4 touch the fish. There is transparent mucus on the surface of fresh fish, and the scales are shiny and closely attached to the fish, which is not easy to fall off; The mucus on the surface of stale fish is opaque, and the gloss of fish scales is poor, so it is easy to fall off. The principle of optical wave furnace.