Nowadays, most of the insulated water bottles on the market are insulated in a sealed way. No matter what brand of insulated water bottles, how well the publicity is done, remember not to use them to brew tea for a long time. Because the structure of tea itself is very special, once it is sealed, it is easy to ferment. After fermentation, tea will produce harmful substances to human body. Some advanced customized thermos bottles even have health care functions, but for health cups, drinking water directly is OK, try not to use for tea or hot drinks.
If it is used for a short time, it is still good to soak tea in an insulated water bottle. Because tea is rich in protein, fat, sugar, vitamins and minerals and other nutrients, it is a natural health drink for most people. As long as it is not soaked in the insulated water bottle for a long time, it can drink healthy. If soaked for a long time, vitamin C and other nutrients in tea will be completely destroyed, and the health function of tea will be reduced because soaked in high temperature for a long time. Not only can tea not be soaked in the thermos bottle for a long time, but also soup, milk or traditional Chinese medicine can not stay in the thermos water bottle for a long time.
If you want to drink tea in a thermos water bottle, brew it in a teapot first, and then pour it into the thermos insulated water bottle to keep warm. High-quality insulated water bottles have excellent heat preservation effect. These things will deteriorate because of the continuous high temperature, and even produce harmful substances to the body. So don't put other things in the insulated water bottle too long except water. At the same time, because of the good thermal insulation effect of the bottle, after soaking at a high water temperature, the aroma of tea will quickly volatilize, which not only reduces the nutritional value of tea itself, but also reduces the aroma of tea and increases harmful substances.