Very hot.
If you think about it, the water that has just been boiled is immediately brought into your mouth, and you ask if your lips have become two sausages?
As a must-have household appliance for every household, the electric kettle can be said to be able to boil a pot of good hot water! (Isn't that bullshit?) ）
But this kind of small household appliances, some guys who love to do things always take it to open the shabu, saying that what is now used in electric kettles is high manganese steel, which can release heavy metal manganese, which will lead to memory decline, lung cancer, skin cancer.......
This topic is not once or twice, but Dr. Xiaokang reminds everyone once again that it is all rumors! rumor! Rumors!
Regular stainless steel products, there is no risk of manganese exceeding the standard
The material of electric kettles is usually stainless steel containing manganese, which is also the focus of controversy.
But in fact, as long as it is a product produced by a regular manufacturer, the manganese precipitated into drinking water by the stainless steel electric kettle is extremely traceable, and the manganese content per liter of water is not even 0.1 mg.
According to the calculation of drinking 2 liters of water per day, the maximum intake of manganese is only 0.2 mg, which is still far from the upper limit of 11 mg per person per day.
Even if the electric kettle is used for a long time, it will not cause any harm to human health.
Manganese, too, is not a poison
As a common metal element, manganese is not without benefits for the human body.
On the contrary, it is a trace element necessary for the human body, which also plays an important role in human health, and is a component of connective tissue, bones, coagulation factors, sex hormones and so on.
This ingredient can help the body to metabolize fats and carbohydrates, promote the absorption of calcium, and help the body regulate blood sugar, while also participating in normal brain and nerve function.
Therefore, if the human body lacks manganese, it will also affect the development of brain nerves.
Manganese overdose can also be poisoned, and the daily intake should not exceed 11mg, so as not to cause manganese poisoning phenomena such as slow exercise and generalized sclerosis.
Instead of worrying about whether the heavy metal content exceeds the standard, it is better to clean the scale of the kettle
Stainless steel cookware does analyze very small amounts of manganese, but it is still far from the poison dose.
In addition, our daily steel is alloy state, the metal in these states is very inert, and it is not easy to dissolve into food, regardless of the vinegar and sauce eaten daily, after heating, it will not be easy to precipitate.
Instead of worrying about whether it exceeds the standard, it is better to deal with the scale in the kettle in time.
After long-term use of electric kettles, there will be a large amount of scale attached to the inner wall of the kettle, the main components of these scales are calcium sulfate and calcium bicarbonate.
Although there is currently no relevant research showing that these ingredients can cause harm to the body, the presence of scale will affect the heat conduction of the electric kettle, reduce the heating efficiency, and most importantly, increase the safety risk, making the electric kettle prone to circuit failure.
Therefore, it is very necessary to clean the electric kettle regularly.
How should I clean the kettle?
Once the inner wall of the electric kettle has formed scale, it is difficult to remove by conventional scrubbing methods, and some materials must be used:
1. Vinegar
The main components of scale are calcium sulfate and calcium bicarbonate, which react with vinegar and become water-soluble substances.
In addition, vinegar is also a common condiment in the family kitchen, so using vinegar to clean the electric kettle is a very simple and easy way to do it.
Specifically, take the appropriate amount of vinegar into the electric kettle, add the right amount of water to boil, let it sit for one night, and gently scrub it with a rag the next day, and you will find that the scale is gone.
2. Baking soda
In addition to vinegar, baking soda is also a good choice.
Baking soda is alkaline and can also help dissolve scale. The specific method is the same as vinegar, which is boiled and left to stand for one night, and then washed.
All in all, we don't need to worry too much about the manganese ingested in the diet, nor do we need to worry about the daily use of stainless steel water bottles that will cause manganese poisoning.
bibliography:
[1] Jiangsu Provincial Bureau of Quality Supervision.2016 electric kettle product risk monitoring quality analysis report
[2] National Food Safety Risk Assessment Center. Knowledge of manganese related to health.