Recently, a message about selling salt exploded in a circle of friends. The truth is this …
Cctv newsRecently, the article "China sells salt is an animal" has been widely spread on the Internet. In the name of a professor, this paper points out the anti-caking agent in salt — — Potassium ferrocyanide does harm to human liver and kidney, causing people’s panic.
The following is taken from the original text:
My physical examination found that transaminase rose — — Total bilirubin increased — — Creatinine rises, which is better after a while, and then rises again. In the worst case, I feel that the kidneys are obviously wrong, and the urine is soy sauce-colored. There is a doctor who graduated from Concord among my relatives. He thinks that my symptoms are caused by some chemical substance. Let me check them carefully. I checked my products one by one, and finally I found out:
Anti-caking agent for salt noodles: potassium ferrocyanide!
I was surprised when I checked last time, and there were so many condemnations in the world, asking why Zhongyan added potassium ferrocyanide to the salt surface! ?
I immediately changed the salt containing anti-caking agent, and all the symptoms disappeared for a long time, and the test sheet returned to normal, but creatinine has been a high value in the normal range since then, which means that my kidney was seriously damaged.
Potassium ferrocyanide is mainly used as carburizing agent in steel industry to improve the surface hardness of steel products.
The printing and dyeing industry is used as an oxidation assistant, which makes the dyeing of refined cotton cloth gradually maintain chromatin. Pigment industry is the main source of producing Yan Hualan.
The chemical industry is used as an iron remover.
The food industry is used as a food additive-salt anti-caking agent.
This product belongs to low toxicity category. Attract coughing and shortness of breath. Oral administration causes gastrointestinal discomfort. It is reported that the kidney is damaged and urine sugar is increased during poisoning. It is also seriously harmful to the environment.
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Salt is the most commonly used condiment in life. So, is it safe to add potassium ferrocyanide to salt? I will tell you the truth now!
Potassium ferrocyanide is a legal additive.
Kai Zhong, member of the Standing Committee of Health Communication Branch of Chinese Preventive Medicine Association, said that potassium ferrocyanide, as an anti-caking agent for salt, is a legal food additive. Potassium ferrocyanide in domestic salt will not harm human body if people eat it for a long time.
Some people still don’t trust, "then if I eat a little every day, will it have chronic toxicity?" Will it cause cancer? "
In fact, the chronic toxicity of potassium ferrocyanide is also very low. According to the data of the World Health Organization and the International Food and Agriculture Organization, the lifetime safe dose of potassium ferrocyanide is 0.025 mg per kilogram of body weight. That is to say, for a person weighing 60 kilograms, it is no problem to take 1.5 milligrams a day.
Kai Zhong said that according to our national standard, if we want to cause negative effects on people’s health, adults should eat about 3 liang (150 grams) of salt every day, while normal people’s daily salt consumption of 20 grams is already very salty.
Safety is used in many countries.
Potassium ferrocyanide is also used as an anti-caking agent abroad.
For example, the EU can use potassium ferrocyanide/sodium/calcium; The United States uses sodium ferrocyanide, and the limit is basically the same as that of China; Japanese can use potassium ferrocyanide/sodium/calcium, but the limited value is twice that of China.
You can choose whether to eat or not.
Consumers can actually choose whether to eat salt added with potassium ferrocyanide.
According to experts, according to relevant regulations, salt producers should make labels to indicate which additives have been added.
In fact, in the market, potassium ferrocyanide is added to the salt that is easy to agglomerate, such as well-mine salt, but potassium ferrocyanide is not added as an anti-caking agent to most salt products, including lake salt and ice crystal salt. Consumers have a lot of choices.
Other truths about salt
In fact, many kinds of salt in life are not as magical as claimed!
Sea salt: It does not contain iodine.
Iodine is an essential trace element for the body, and the internationally recognized main measure to prevent iodine deficiency disorders is iodization with salt.
Many people worry that if they eat too much iodine, they will get hyperthyroidism, which is an excessive concern. WHO believes that it is generally safe for normal people to consume less than 1000 micrograms of iodine per day.
Low sodium salt: you can’t eat too much.
The so-called low-sodium salt is actually based on iodized salt. For people with cardiovascular diseases such as hypertension, it is beneficial to replace daily salt with low-sodium salt.
However, you can’t eat more. Because, even low-sodium salt, if it is 25% more than ordinary salt, it will eat as much sodium as ordinary salt.
Rose Salt: It’s not as amazing as claimed.
There is also a kind of rose salt on the market, which is very popular. It claims to have 84 kinds of trace elements, which is good for health and much more expensive than ordinary salt.
In fact, almost all foods may detect 84 kinds of nutrients (trace elements). Moreover, dietary guidelines generally recommend eating no more than 5 grams of salt every day, which has little effect on supplementing other minerals or other trace elements.
Nutrients: Will not bring more nutrition.
There are all kinds of "nutritional" salts in the market, such as adding iron, zinc, calcium and selenium. The actual effect of the elements added by these salts is not necessarily good, and the operability is not strong.
Pay attention to three points when eating salt
Therefore, no matter what kind of salt it is, these three points should be paid attention to when choosing salt to eat:
① Priority is given to iodized salt.
At present, iodized salt is still needed. When buying salt, people still give priority to iodized salt.
② Purchase according to demand.
If it is to help control blood pressure and prevent cardiovascular and cerebrovascular diseases, then when you buy salt in the market, you must pay attention to the content of sodium chloride. Under the premise of not expecting to affect the taste too much, you can choose low sodium salt.
③ Control amount: Do not exceed 6g per day.
No matter what salt it is, its main component is sodium chloride. If you eat more, it may cause high sodium intake, which is not conducive to cardiovascular health.
Keep this warning line in mind when controlling the quantity: 6g!