WHO calls to stop using rice cookers? Do rice cookers cause cancer? CCTV experiment tells you the answer
Early in the morning, Xiao Jiu's group "Dating and loving family" received this message: "World Health Organization appeals: The use of rice cookers should be stopped, or liver cancer 'catalysts'".
Immediately afterwards, the seven aunts and eight aunts began to discuss.
"Is this fake news?"
"The article said that the use of Teflon in non-stick pans will cause cancer."
"A couple were diagnosed with liver cancer, but the coating fell off, but they were still reluctant to replace it, so it was a tragedy."
Rice cookers are very common daily necessities in every household. Is this rice cooker really harmful?
1. Will the coating of the rice cooker cause cancer?
In daily life, we use rice cookers almost every day, but how can the coating of rice cookers become a cancer "catalyst"?
At present, the most common rice cooker on the market is the aluminum inner pot . This material is heated evenly and transfers heat quickly. It is the preferred material for the inner pot of the rice cooker. In recent years, with the development of science and technology, new types of liner materials have appeared, such as stainless steel liner, ceramic liner, etc. have also entered the market.
It is worth noting that aluminum is easily precipitated by heating and acid, so there is generally a coating on the surface of the aluminum liner to protect it. This coating is a perfluorinated polymer such as polytetrafluoroethylene, that is, "Teflon" commonly used in non-stick pans.
"Teflon" is relatively stable in nature, has strong acid and alkali resistance, is non-toxic, and is not easy to decompose, so it will not cause harm to the human body when it is used normally and the coating does not fall off.
Will Teflon be harmful to the human body when the temperature is too high?
In CCTV's "Life Tips" column, a research team from Beijing University of Chemical Technology was invited to cooperate with a "Teflon" experiment. The researchers extracted a small amount of Teflon and heated it at high temperature, and found that Teflon When the dragon is at 300 degrees, it begins to decompose, and the higher the temperature, the more toxic the decomposition product is.
However, the average family uses a rice cooker to cook, which generally does not reach 200 degrees , and the decomposition problem of Teflon cannot be touched at all.
In fact, why some articles say that Teflon is carcinogenic may refer to perfluorooctanoic acid (PFOA). In the last century, it was one of the chemical raw materials for the manufacture of Teflon.
In 2018, an American documentary "Devil You Know Me Know" exposed a factory using PFOA. After inspection, it was found that PFOA was also found in the body of some employees, and the local water source was also polluted. Toxic and carcinogenic.
Currently, this substance has been banned as a raw material for the manufacture of Teflon. That is to say, there is no such carcinogen in the rice cookers currently available on the market.
If the coating is damaged, should I continue to eat it?
When the rice cooker is used for a long time, it is prone to wear and tear, and the coating may be scratched or peeled off. damaged, it is not recommended to continue to use it.
Second, the more expensive the coating, the better?
If you want the rice cooker to be more durable, it is the key to whether the surface of the inner pot coating is firm. Most products on the market are sprayed with two layers, a wear-resistant layer and a Teflon non-stick layer.
High-end products tend to use three to four coats to make the coating stronger and help distribute heat evenly.
In recent years, the ceramic coating that has attracted more attention has higher hardness than fluorocarbon and can withstand high temperature up to 450 degrees Celsius, but its shortcomings are also obvious, and its non-stickiness will attenuate with the frequency of use.
There is also a PFA coating, which is more resistant to saltwater corrosion than Flon, and costs more.
In general: the difficulty of coating peeling is: ceramic coating > PFA coating > Teflon coating , whether it is expensive or cheap, as long as it is purchased through regular channels, it is guaranteed. Which one to choose depends on personal requirements.
3. Safe use of rice cookers, pay attention to 3 points
What habits should you pay attention to if you want to extend the use time of the rice cooker? Zhang Zhaoming, deputy chief engineer of the Living Appliance Testing Center of China Household Electrical Appliances Research Institute, suggested:
Before use, you should read the product manual carefully, understand the precautions and various functions of the product, and ensure that the inner pot of the rice cooker and the electric heating plate are clean.
In use, it is best to avoid using metal rice spoons that are prone to scratches to avoid damage to the coating. Dry burning is strictly prohibited, and food should not be placed in the rice cooker for a long time, especially food with strong acidity and alkalinity, which is easy to have a corrosive effect on the inner pot.
After use, the inner tank should be cleaned in time and wiped with a soft cloth to avoid friction with steel balls and shorten the service life of the coating. Under normal circumstances, the inner tank needs to be replaced after 3-5 years of use.
Extension: Is the hypoglycemic rice cooker worth buying?
As a special existence in rice cookers, the "hypoglycemic rice cooker" has attracted enough attention. Businesses claim that this rice cooker can reduce blood sugar through "black technology" without worrying about rising blood sugar or gaining weight.
The hypoglycemic rice cooker claims to be able to change this bowl of rice from "full sugar/standard sugar" to "less sugar" or even "half sugar". It sounds complicated, but most of it is through physical means, in the process of cooking the rice, the rice soup is filtered out in advance.
Can a hypoglycemic rice cooker really reduce sugar?
In order to verify whether the rice cooker can "desugar" rice, experts from the Beijing Institute of Nutrition Research conducted an experiment. The experiment selected 12 subjects and divided them into two groups. One group ate ordinary rice, and the other group ate sugar-free rice. , the experts conducted serum blood glucose monitoring at multiple points before and after the subjects' meals. However, the results found that the rice steamed from the two rice cookers did not cause any difference in the blood sugar results.
In addition, the rice soup is filtered, which means that the nutrition of the rice will also be lost, and the taste will be worse.
Moreover, the merchants constantly reminded the hypoglycemic rice cooker to halve the sugar content in the product introduction meeting, which is suitable for people who lose weight, the elderly, etc., and encourages them to eat boldly and with confidence, but it is easy to affect the audience, especially the diabetic patients to increase the amount of rice, and even have a fluke mentality , Take less medicine and don't take medicine.
In short, a regular and qualified rice cooker does not cause cancer. If the coating peels off obviously, it can be replaced in time. For the so-called hypoglycemic rice cooker, it is better to cook rice with coarse grains when cooking, which is more nutritious and healthier.
References:
[1] "A rice cooker is a "harmful pot", is the inner liner toxic or a cancer catalyst? CCTV experiment tells the answer". Zhong Ming talks about science. 2022-08-07
[2] "Can the rice cooker still be used after the coating is damaged? 》.CCTV Life Circle.2021-02-02
[3] "Don't use the rice cooker when this happens! Attention should be paid to those in charge of the family". Health Times. 2022-04-07
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