Drinking tea has become the most popular way of health and wellness in people’s pastime. Many people like to keep a thermos cup in the office, and keep tea leaves in the drawer at all times. They start to use the thermos cup to make tea as soon as they go to get off work. The tea is still warm until they get off work. Time insulation, in fact, this approach is wrong.
Tea is rich in nutrients such as protein, fat, sugar, vitamins and minerals. It is a natural health drink. It contains tea polyphenols, caffeine, tannins, Tea pigments, etc., also have a variety of pharmacological effects. If tea is brewed in a thermos cup, the tea leaves are soaked in high-temperature water for a long time, just like decocting with a warm fire, and a large amount of tea polyphenols, tannins and other substances will be leached out, making the tea color thick and bitter.
At the same time, due to the high water temperature, the aromatic oil in the tea will quickly volatilize in a large amount, and the tannic acid and theophylline will seep out in large quantities, which not only reduces the nutritional value of the tea, but also reduces the aroma of the tea. , but also increase the harmful substances. In addition, nutrients such as vitamin C will be destroyed when the water temperature exceeds 80 °C, and long-term high temperature soaking will cause excessive loss, thereby reducing the health care function of tea.
In addition, some people use enamel tea sets to make tea, which is also inappropriate. The enamel tea set is prone to wear and tear after being used for a long time, exposing the iron sheet, and the metal components will dissolve with the tea, making the color of the tea yellow and losing its original flavor. Moreover, the enamel tea set dissipates heat, transfers heat quickly, and the aroma of the tea is easy to dissipate.
Therefore, it is not advisable to use thermos cups and enamel tea sets to brew tea. If you want to drink hot tea, you can brew with a purple clay pot or ceramic tea set. After the tea is brewed, pour it into the thermos cup.
What’s the harm in making tea in a thermos?
Many people like to make tea in a thermos cup, so that the tea is always warm. In fact, there are hidden health risks here. Tea contains a lot of tannic acid, theophylline, tea sesame oil and various vitamins. It is more suitable to brew with water at about 80 ° C. If you use a thermos to soak the tea in high temperature water for a long time, it is like boiling with water. All the vitamins in the tea will be destroyed, the tea sesame oil will be volatilized in large quantities, and the tannic acid and theophylline will be exuded in large quantities. This not only reduces the nutritional value of tea leaves, but also reduces the aroma of tea, but also increases harmful substances. Therefore, if you are a tea lover, you might as well use a porcelain cup to make tea.
What are the disadvantages of drinking water from a thermos?
There is no harm in using stainless steel thermos for a long time, and it will not cause cancer due to the heavy metals contained in it. The heavy metals in the stainless steel thermos cup are the metals needed by the human body, which are beneficial and harmless.
But do not use stainless steel thermos cups to make tea, which is harmful to human body.
Is it good to make tea in a thermos?
Do not use thermos cups to make tea, because tea contains a variety of vitamins and aromatic substances, which will be greatly reduced under high temperature and constant temperature, and the taste of the brewed tea is also too astringent. Do not use freshly boiled water to make tea, or put the tea in a filter, otherwise the rich vitamins and minerals in the tea will be lost.
