Zhanjiang oysters can be eaten raw?

Not all oysters can be eaten raw, some oysters even just salvaged from the sea can not be eaten raw.

So, which oysters can be sashimi raw food, which oysters can not be sashimi raw food?

There are three main risks associated with eating raw oysters: microbial pathogen contamination, heavy metal contamination, and shellfish toxin contamination.

Can be used to eat raw sashimi oysters generally required to grow in the waters of the first level; the second level of marine aquatic products are only suitable for cooked food; the third level of marine waters are generally only suitable for swimming in the food have standardized management of the country is not allowed to use the waters of aquaculture or fishing aquatic products for food; if the fourth level of marine waters are not suitable for swimming, generally such waters are only suitable for making the dock.

Because of our country's weak sea management, resulting in very serious offshore pollution. in July 1997, the United States banned the import of Chinese oysters on the grounds of unequal sea management; at the same time, the European Union has also enacted 386 regulations to prohibit China's oyster imports.

Microbial pathogen contamination can be avoided by cooking, and heavy metal contamination is easily overlooked. Oysters are filter-feeding organisms that have a relatively strong ability to accumulate heavy metals, and conventional cooking methods cannot eliminate heavy metal hazards. Shellfish toxins, like microorganisms and heavy metals, are not produced by oysters, but are caused by environmental influences. Shellfish toxins are mainly ingested by oysters in contaminated eutrophic seawater some algae, shellfish toxin accumulation. Shellfish toxins are mainly ** shellfish toxins and diarrhea shellfish toxins, these toxins exceed the standard not only can not be used for raw food, cooked food is also not allowed, because high temperature can not destroy shellfish toxins.

Some domestic oysters claim to be able to sashimi raw food, in fact, they belong to the purification of oysters. Is the microbial pathogenic bacteria contamination, heavy metal contamination, shellfish toxin contamination of unqualified oysters sent to a clean and closed pool for breeding, until it reaches the required indicators and then enter the market. Even after purification, there is still a great risk.