Fish has always been touted as a healthy food, suitable for brain development in children and teenagers, protein supplementation for the elderly, weight loss for women, and zinc supplementation for men, and so on. But while you may be eating plenty of fish, how much do you really know about buying it?
1. Fish with signs of spoilage
. Fish with signs of spoilage
It is generally recommended to eat live fish. Not only because they taste better, but also to prevent spoilage. However, some sea fish may appear dead due to their living environment or transportation reasons.
But if you find the fish is spoiled, spoiled, not elastic, or even falls apart at a touch, it should not be purchased or eaten. These phenomena are related to repeated thawing and long storage time. The protein inside the fish decomposes under the action of bacteria, producing toxins and a foul odor.
2. Fish with a torn belly
After a fish dies for a period of time, its abdomen may tear or burst open due to bacterial action. The fish's abdomen contains intestines, gallbladder, swim bladder, and other substances, which will spoil and burst due to time and temperature. At this point, the fish has a bad smell, and is high in bacteria and toxins.
3. Wild fish near chemical plants
The purpose of pursuing wild fish is for its delicious taste, but the growth environment of wild fish is concerning. Wild fish growing near chemical plants contain more heavy metals and toxic substances, which will also enter the body after consumption and accumulate there.
5 parts of a fish that are prone to containing toxins
1. Fish scales. Because fish live in water, and fish scales are like an outer layer of clothing. Unlike humans, fish don't bathe, so fish scales can easily accumulate bacteria, dirt, and parasites. This not only affects the taste, but some fish from ponds and ditches also carry parasites.
2. Fish gills. This is the fish's respiratory organ. In the water, it filters oxygen, microorganisms, and dirt through the gills. The fish's gills are like a filter net, making it easier for bacteria and parasites to exist. Moreover, they are not very tasty and have a strong muddy flavor.
3. Fish gallbladder. There are many cases of fish gallbladder poisoning in hospitals. Because fish gallbladders contain substances such as cholic acid and heavy metals, which can damage the liver and kidneys. It can even paralyze the respiratory system, causing difficulty in breathing.
4. The black membrane. It grows inside the fish's abdomen, serving a protective function by absorbing heavy metals and toxins, which is not good for the human body. The reason people do not get poisoned after eating it is related to the amount consumed.
5. The fish line. It grows on the side of the fish's body and is part of its sensory organ. Although it is edible, it is surrounded by mucus, which has a strong fishy smell and seriously affects the taste, especially in carp.
Some questions about eating fish:
1. Is the fresher the fish, the better?
No! Fish that is killed and eaten immediately has not had its proteins broken down, so it doesn't taste as good and its nutrients are not fully released. In fact, during the rigor mortis stage after death, the acidity of the protein in the fish increases. It is best to refrigerate it for half a day.
2. Is the fish swim bladder edible?
Yes! In traditional Chinese medicine, the fish swim bladder is believed to tonify the kidneys and strengthen bones and tendons, and it can also provide collagen.
3. Which fish are more likely to cause allergies?
Compared to river fish and live fish, sea fish, scaleless fish, and dead fish are more likely to cause allergic reactions in humans.