1 should not be loaded with acidic drinks
Because of its high melting point, stainless steel does not release undesirable substances due to high temperature melting.
However, stainless steel is most afraid of strong acid. If a strong acid drink is loaded for a long time, it may cause damage to its inner liner.
2 should not be loaded with milk
Some people put hot milk in a thermos cup. However, this method allows the microorganisms in the milk to rapidly multiply at a suitable temperature, causing spoilage and easily causing diarrhea and abdominal pain.
When the milk is in a high temperature environment, vitamins and other nutrients will be destroyed, and the acidic substances in the milk will also react with the inner wall of the cup to affect human health.
Experts say that whether it is milk or acidic juice, it is best to drink in a certain period of time.
3 should not make tea
It has been reported that tea contains a large amount of tannic acid, theophylline, aromatic oil and multivitamins, and it is only suitable to brew with water of about 80 °C.
If you use a thermos cup to make tea, soak the tea in high temperature, constant temperature water for a long time, just like boiling with warm fire.
The vitamins in the tea are destroyed a lot, the aromatic oil is volatilized, and the tannins and theophylline are leached in a large amount, which not only reduces the nutritional value of the tea, but also makes the tea juice tasteless, the tea tastes bitter, and the harmful substances increase.
In this regard, experts said that tea is indeed not suitable for long-term soaking, because soaking time is too long, tea may release heavy metal substances, which is harmful to health.
4 should not bubble Chinese medicine
Some people also like to soak traditional Chinese medicine in a thermos cup for easy drinking.
However, a large amount of acidic substances are dissolved in the fried Chinese medicine, which easily reacts with the chemical substances contained in the inner wall of the heat preservation cup, and dissolves into the soup, which has an adverse effect on the human body.