Do You Know The Hazards Of Making Tea In A Thermos Vacuum Flask?

Most of the thermos cups are kept in a closed way for heat preservation. Due to the structure of the tea itself, it will be fermented in a closed condition. The fermented tea will produce some harmful substances to the human body. Tea is rich in protein, fat, sugar, vitamins and minerals, etc. Nutritional ingredients, it is a natural health drink, which contains tea polyphenols, caffeine, tannins, tea pigments, etc., and has a variety of pharmacological effects.Tea leaves are soaked in high-temperature water for a long time, just like warm decoction, a large amount of tea polyphenol tannins and other substances will be leached, making the tea color strong, bitter and astringent, and nutrients such as vitamin C will be destroyed when the water temperature exceeds 80. Prolonged high temperature soaking will cause excessive loss, thereby reducing the health function of tea. At the same time, because the water temperature has been maintained at a high temperature, the aromatic oil in the tea will quickly evaporate in a large amount, and a large amount of theophylline tannin will exude. It reduces the nutritional value of tea, reduces the aroma of tea, and increases harmful substances. If this tea is consumed for a long time, it will endanger health and cause a variety of diseases in the digestive cardiovascular system and hematopoietic system.