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Original: Yun Wuxin
Some media reported that from January to March this year, among the food safety sampling announcements announced across the country, there were as many as 176 batches of seafood cadmium exceeding the standard, of which pipi shrimp and portunus were the most detected
.
.
In the face of such news, the most bland way of saying is "don't eat it
.
" But what foodies are concerned about is: "Eating puffer fish desperately" is a common occurrence.
Can Pippi shrimp with excessive cadmium be eaten?
.
" But what foodies are concerned about is: "Eating puffer fish desperately" is a common occurrence.
Can Pippi shrimp with excessive cadmium be eaten?
Slowly talk below
.
.
1.
Why does Pipi shrimp exceed the standard of cadmium?
Why does Pipi shrimp exceed the standard of cadmium?
Cadmium is a heavy metal element, which is very important in industries such as metallurgy, plastics, and electronics
.
With the development of human industrial civilization, more and more mining, smelting and use of it will naturally be discharged and discarded, discharged into the natural environment through waste water, and finally into the sea
.
Animals such as pipi shrimp have a certain ability to accumulate cadmium, so the cadmium content is "rising," and it is detected that it exceeds the standard from time to time
.
.
With the development of human industrial civilization, more and more mining, smelting and use of it will naturally be discharged and discarded, discharged into the natural environment through waste water, and finally into the sea
.
Animals such as pipi shrimp have a certain ability to accumulate cadmium, so the cadmium content is "rising," and it is detected that it exceeds the standard from time to time
.
In other words, "excessive cadmium" is not "illegal addition of cadmium" or "black-hearted farmers illegally use to promote growth", but is completely the result of human pollution of the environment
.
Because the current Pippi shrimp cannot be cultivated commercially, it can only be fished by the ocean.
In fact, the fishermen who catch it,
.
Because the current Pippi shrimp cannot be cultivated commercially, it can only be fished by the ocean.
In fact, the fishermen who catch it,
I don’t know how much cadmium is in the fished Pipi shrimp
.
.
2.
Why does China's Pippi Shrimp exceed the standard frequently?
Why does China's Pippi Shrimp exceed the standard frequently?
The "standards" of pollutants exceeding the standards are artificially set
.
In China, the "National Food Safety Standard Limits of Contaminants in Foods" (GB 2762-2017) stipulates the limits of major contaminants in various foods
.
The limit for seafood such as pipi shrimp is 0.
5 mg/kg
.
The "excessive cadmium standard" mentioned in the announcement refers to exceeding this limit
.
.
In China, the "National Food Safety Standard Limits of Contaminants in Foods" (GB 2762-2017) stipulates the limits of major contaminants in various foods
.
The limit for seafood such as pipi shrimp is 0.
5 mg/kg
.
The "excessive cadmium standard" mentioned in the announcement refers to exceeding this limit
.
In countries all over the world, this standard is quite strict, and is equal to the EU standard
.
The US standard is 3.
0 mg/kg, and South Korea is 2.
0 mg/kg, which is much looser than China and the European Union
.
The announced "Cadmium-exceeded Peeled Shrimp" is basically qualified according to the American standard; even according to the Korean standard, most of them are qualified
.
.
The US standard is 3.
0 mg/kg, and South Korea is 2.
0 mg/kg, which is much looser than China and the European Union
.
The announced "Cadmium-exceeded Peeled Shrimp" is basically qualified according to the American standard; even according to the Korean standard, most of them are qualified
.
For this reason, the Health Commission issued a notice on August 31, 2020, soliciting opinions on the revision of the limit standards for cadmium and other contaminants in some foods
.
As of the deadline for comments on October 20, the final decision on whether to amend has not yet been released
.
.
As of the deadline for comments on October 20, the final decision on whether to amend has not yet been released
.
In fact, China's pollutant limit standards are relatively strict internationally
.
As far as cadmium is concerned, rice is a more important source.
China’s limit standard is 0.
2 mg/kg, while the international standard is 0.
4 mg/kg.
Japan, which eats more rice like China, has also adopted the international standard
.
.
As far as cadmium is concerned, rice is a more important source.
China’s limit standard is 0.
2 mg/kg, while the international standard is 0.
4 mg/kg.
Japan, which eats more rice like China, has also adopted the international standard
.
3.
The relationship between the dose and toxicity of cadmium
The relationship between the dose and toxicity of cadmium
Cadmium is not a nutrient required by the human body.
Its effect on the human body is only harmful, not beneficial
.
If the intake is small, the human body can handle it, and it will not cause obvious problems to the human body
.
However, if you eat a large amount of food for a long time, cadmium will accumulate in the kidneys and eventually lead to kidney failure, as well as osteomalacia and osteoporosis
.
Long-term exposure to larger doses may also cause digestive tract disorders
.
Its effect on the human body is only harmful, not beneficial
.
If the intake is small, the human body can handle it, and it will not cause obvious problems to the human body
.
However, if you eat a large amount of food for a long time, cadmium will accumulate in the kidneys and eventually lead to kidney failure, as well as osteomalacia and osteoporosis
.
Long-term exposure to larger doses may also cause digestive tract disorders
.
The intake of cadmium is “the less the better”, but considering its natural existence in various foods, it is obviously impossible to pursue “zero intake”
.
So, how much cadmium can the human body tolerate without significant impact?
.
So, how much cadmium can the human body tolerate without significant impact?
Currently, the World Health Organization has set a safety standard of "no more than 7 micrograms per kilogram of body weight per week
.
" This is equivalent to not exceeding 75 micrograms per day for a person weighing 75 kilograms
.
In other words, if a 75 kg person consumes no more than 525 micrograms of cadmium from all food and drinking water per week, then even long-term consumption will not cause harm to the body
.
.
" This is equivalent to not exceeding 75 micrograms per day for a person weighing 75 kilograms
.
In other words, if a 75 kg person consumes no more than 525 micrograms of cadmium from all food and drinking water per week, then even long-term consumption will not cause harm to the body
.
This amount includes all cadmium in food and beverages
.
Pipi shrimp is just one source of cadmium
.
.
Pipi shrimp is just one source of cadmium
.
For human health, it is the "total intake" of cadmium that matters, not the "content" in prawns or certain foods
.
For example, if you eat 300 grams of rice a day, you will only weigh 2.
1 kilograms in a week.
If the cadmium content of the rice you eat is "on the line" (ie 0.
2 mg/kg), then the total amount of cadmium ingested is 420 micrograms (ie 0.
42 mg).
.
And this week, I ate a catty of cadmium more than twice the standard (ie 1 mg/kg) of Pipi shrimp.
Considering that the edible parts of Pipi shrimp account for only a part of the total weight, the total cadmium intake is comparable to that of these rice.
The ratio is almost the same
.
.
For example, if you eat 300 grams of rice a day, you will only weigh 2.
1 kilograms in a week.
If the cadmium content of the rice you eat is "on the line" (ie 0.
2 mg/kg), then the total amount of cadmium ingested is 420 micrograms (ie 0.
42 mg).
.
And this week, I ate a catty of cadmium more than twice the standard (ie 1 mg/kg) of Pipi shrimp.
Considering that the edible parts of Pipi shrimp account for only a part of the total weight, the total cadmium intake is comparable to that of these rice.
The ratio is almost the same
.
4.
How to eat pipi shrimp to reduce cadmium intake
How to eat pipi shrimp to reduce cadmium intake
Compared with other foods, the cadmium content in seafood such as pipi shrimp is indeed higher
.
However, Pippi shrimp is not a regular food after all-especially considering its price, most people just "occasionally do it" to relieve their greed
.
Because the total amount of food eaten is small, the total amount of cadmium intake from it is not too much-considering the total food intake, food and vegetables are the main sources of cadmium intake
.
.
However, Pippi shrimp is not a regular food after all-especially considering its price, most people just "occasionally do it" to relieve their greed
.
Because the total amount of food eaten is small, the total amount of cadmium intake from it is not too much-considering the total food intake, food and vegetables are the main sources of cadmium intake
.
In other words, cadmium in seafood such as pipi shrimp should really be paid attention to
.
Out of the consideration of "minimizing cadmium intake", it is not a big deal not to eat, but for consumers who especially like pipi shrimp, there is nothing wrong with eating some to relieve gluttons-this may also be the United States and the United States.
The reason why South Korea has set a much looser cadmium limit standard than China
.
.
Out of the consideration of "minimizing cadmium intake", it is not a big deal not to eat, but for consumers who especially like pipi shrimp, there is nothing wrong with eating some to relieve gluttons-this may also be the United States and the United States.
The reason why South Korea has set a much looser cadmium limit standard than China
.
Because of the metabolism of Pipi shrimp, cadmium is more concentrated in the head
.
Therefore, when eating pipi shrimp, not eating the head, only eating the meat of the middle and back (the head is not necessarily delicious anyway), you can significantly reduce the intake of cadmium
.
.
Therefore, when eating pipi shrimp, not eating the head, only eating the meat of the middle and back (the head is not necessarily delicious anyway), you can significantly reduce the intake of cadmium
.
