At present, all kinds of river fish and sea fish have become fat, but folks have always said that the dark film in the fish belly, the darker the pollution, the heavier the pollution. So what is this black film? Is it really poisonous?
What is the black film inside the fish belly?
Marine fish and river fish have a thin black film coat on both sides of the abdomen. Some people say that this is the collection layer of various harmful substances in the fish belly. It is the most deodorant and soily part. It is harmful to the human body when eaten. You think that the fish is a master of martial arts, and can also collect systemic toxins into specific areas. In fact, the layer of the membrane of the fish belly pear is called "peritoneal visceral layer", also called "endometrial visceral layer", which exists between the fish belly wall and the internal organs. This film also has a very large effect. The peritoneum can cover most of the organs in the abdominal cavity, absorb the impact and protect the internal organs; it can also secrete mucus to wet the surface of the organs and reduce the friction between organs. Therefore, this film actually acts to lubricate and protect the internal organs.
Many people see black and think it is a sign of serious pollution. In fact, the color of the peritoneal lining is determined by the melanin content in the fish. For example, the intima melanin density of the squid is 4 degrees, while the squid is 6 degrees (the higher the degree, the darker the color). Not all fish have black membranes, such as squid, grass carp, flowers, white mullet, tilapia, etc., and the black film of fish that may be contaminated by water is thicker. However, there is no black film for squid, yellow squid (yellow bone fish), etc., even if it is raised in polluted water, there is no black film.
Can the black film in the fish belly eat?
Since this layer of black clothing has nothing to do with pollution, can this black film coat be eaten?
The color of this film is only pigment cell deposition, not a contaminant, so it can be eaten without major safety issues.
However, this film is mainly composed of fat cells, high in fat content, and it is also easier to enrich some fat-soluble contaminants, which is not a healthy choice. But this is not a problem unique to this film, it will be found in all tissues with high fat content. Of course, most of the fish you buy in regular places are safe and don't worry too much.
As for whether you should take the time to remove this black film, my suggestion is: If you are not too troublesome, remove it; if it is too troublesome, do it together, there is not much, anyway, don’t worry too much. .
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