Fresh fish are killed and eaten, but the toxins are still alive!
“Fresh live fish, kill now.
“It’s a tempting sign often made by restaurants.
Many people believe that live fish can be eaten fresh to ensure better taste and nutrition.
But in fact, it is uncertain science to eat fish immediately after slaughter, and it is possible to eat toxins into the body.
Fresh live fish will be in a stiff phase immediately after being slaughtered.
At this time, the energy metabolism in the fish is still in progress, and a variety of biochemical changes will occur.
At this stage, small amounts of lactic acid and phosphoric acid are produced in the fish meat to inhibit the reproduction and growth of spoilage microorganisms.
At this time, the fish meat was still weakly acidic and the meat was hardened. The protein in the fish tissue has not been decomposed to produce amino acids, and amino acids are the main component of umami.
If you cook at this time, the taste is almost poor, and the nutrients cannot be fully absorbed by the body, and the acidic meat will affect digestion.
In addition, there may be some toxins, parasites or bacteria in the fish, and these harmful substances that have not died may also enter the human body.
Two to five hours after the fish is slaughtered, some of the enzymes in the fish’s meat begin to function, breaking down the protein into amino acids, and making the fish’s meat tender and delicate.
At the same time, metabolism in the fish body has stopped, most of the toxins have been discharged, and the bacteria have died, so this is the best time for cooking.
In more than 6 hours, the fish will rot and become soft, and the microorganisms will multiply, and the fish will easily deteriorate.
Therefore, if you want to eat delicious and nutritious fresh fish, it is best to put it in the refrigerator freezer for two to three hours after slaughtering.
If placed indoors, if the room temperature is high, the time will be shortened to 1 hour, and if the room temperature is low, the time will be extended to 5 hours.
So how do you tell if the fish is fresh?
Here is a way to teach everyone to put the fish you bought home in the water. If the fish swims back and forth as soon as it enters the water, it means that the fish is fresh and needs to be kept for a while after being killed;When you float up and your stomach is up, you may have started to breed bacteria and you should eat it immediately.