Four kinds of water that can't be put in a thermos cup:
First, drinks rich in fat and protein.
In addition to milk, soybean milk, soybean milk and other beverages rich in fat and protein, because the temperature is between 65-85℃, it is also easy to deteriorate in a thermos. It is best to drink it within 1-2 hours after putting it in a thermos cup.
Second, lemonade.
The principle of heat preservation is: vacuum+stainless steel reduces heat transfer, thus achieving the purpose of heat preservation. So the innermost layer is stainless steel in contact with water. Soak lemonade in a thermos cup, and the vitamin C in lemons will be seriously lost with the extension of storage time, which cannot play the role of whitening and keeping in good health. The acid in lemon will corrode the inner wall of metal.
If the stainless steel inside is made of materials with poor corrosion resistance, it will lead to the removal of heavy metals. For example, chromium is harmful to human skin, digestive system and respiratory system, and nickel is harmful to human liver, kidney and other tissues. The rust inside the thermos cup is related to the corrosion of acidic substances and stainless steel that does not meet the standard. Except lemonade, other fruit and vegetable juices and salty soup should not be put in the thermos cup.
Third, carbonated drinks.
One of the favorite drinks of modern young people, but it is not suitable for being put in a thermos cup. First of all, stainless steel is most afraid of strong acids. If the strong acid beverage is filled for a long time, it is likely to damage the inner container and be corrosive. Secondly, the aerated beverage will release gas during shaking, which will lead to the overflow of the beverage or overflow when it is opened.
Fourth, Chinese medicine tea or tea.
Whether it is Chinese herbal tea, Chinese herbal preparation or Chinese herbal soup, it is not suitable to be stored in a thermos cup, because a large number of acidic substances are dissolved in the fried Chinese herbal medicine, which is easy to react with the chemical substances contained in the inner wall of the thermos cup and dissolve into the soup, which has adverse effects on the human body.
If you make tea in a thermos cup, you can soak the tea in high-temperature and constant-temperature water for a long time, just like boiling it with warm fire. A large number of vitamins in tea are destroyed, aromatic oil is volatilized, and tannic acid and theophylline are leached in large quantities, which not only reduces the nutritional value of tea, but also makes tea juice tasteless and bitter, and may release heavy metals, which is harmful to health.
Extended data:
1. Before the new product is used, it must be scalded with boiling water (or some edible detergents) several times for high-temperature disinfection. )
2. Before use, please preheat (or precool) it with boiling water (or cold water) for 5- 10 minutes, so that the heat preservation effect is better.
3. Please add water quickly, so as to avoid scalding when the lid is tightened.
4. Please drink slowly while it is hot to avoid burns.
5. It is not advisable to hold carbonated drinks such as milk, dairy products and fruit juice for a long time.
Baidu encyclopedia-thermos bottle