Wild salmon has a relatively large number of parasites, with the heterotrichous nematode being the most common. However, saltwater parasites cannot survive in the human body for long periods of time, so they mainly cause abdominal pain and diarrhea, with only rare cases of gastrointestinal perforation.
In comparison, farmed salmon are likely to have fewer parasites, thanks largely to the use of fisheries medicines. Freshwater-farmed rainbow trout is sometimes used for sashimi, but the risk is greater than for salmon, due to the fact that parasites in freshwater fish can survive in the human body, the most common of which is liver fluke. If you are concerned about parasites, you can freeze the fish at -20 degrees for at least 1 day and the parasites can be frozen to death.
The enzyme thiaminase in seafood when eaten raw destroys vitamin B1 in the food. In addition, moderate heating not only doesn't destroy the proteins and unsaturated fatty acids in salmon, but also facilitates the digestion and absorption of proteins. Raw food will inevitably have bacteria and parasites, raw salmon is not the best solution. Any fish should be cooked and eaten afterward.
Expanded Information:
Precautions for Eating Salmon:
1. High Temperatures
Generally the parasites in salmon are divided into nematodes and ova, which exist in the anus, abdomen and tail. Parasites can be well eliminated by high temperature, generally the temperature at 70℃ can completely kill the parasites.
2, frozen
Some countries' environmental protection and health departments have introduced targeted food safety regulations, such as the U.S. Food and Drug Administration, which stipulates that fish must be frozen at minus 35 degrees Celsius for 15 hours or minus 20 degrees Celsius for seven days before consumption;
The European Union's standard is to freeze at minus 20 degrees Celsius for more than 24 hours. The Hong Kong Center for Food Safety stipulates that when shopping for raw materials, refrigerating fish at minus 20 degrees Celsius for 24 hours generally kills parasites in fish.
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