Everyone who drinks tea knows that tea cannot be brewed too many times, but everyone also knows that some teas can be boiled and drunk.
Then why can tea leaves be boiled if they cannot be soaked for a long time?
Regarding the reason why tea can not be brewed too many times, most people may just think that tea leaves for too long will be tasteless. In fact, there is more to it.
Tea contains tea polyphenols that suppress cancer, tea polysaccharides that can lower blood sugar, caffeine that makes the central nervous system happy, and a variety of nutrients such as amino acids and vitamins. How much these nutrients can be precipitated has a great relationship with the frequency of brewing. Generally, the larger the shape of the particles, the slower the precipitation of nutrients; the smaller the particles, the faster the precipitation.
Tea leaves generally have similar benefits after 5-6 infusions. The aroma of tea soup is gradually lowered and the taste is weak, but the bitter components in the tea will gradually precipitate out, so the taste is poor and the re-infusion is of little significance. In addition, if the tea leaves are steeped for too long, or even overnight, if they are not stored properly, the tea will deteriorate. The small amount of carbohydrates and protein they contain can cause bacteria and molds, which are extremely harmful to health. Therefore, when drinking tea in the future, you must remember not to drink a pot of tea from morning to night, that is, make it ready to drink in order to drink healthy.
Tea leaves cannot be brewed for a long time, but some teas can be brewed, and the taste of tea soup is better than brewed, this is because the boiling points of different substances in tea are different. The water for making tea is generally 80-100 degrees. At this time, the water-soluble substances in the tea are low-boiling substances. When the tea is brewed, the high-boiling substances in the tea will be released, and the tea soup will become more fragrant.
In addition, British scientists found that compared with boiling tea, using a teapot to make tea can release more anti-cancer substances and have a better anti-cancer effect; making tea can also make tea polyphenols and caffeine , Tea pigments and other substances are fully released, and the effects of refreshing, cellulite, and disease prevention can be brought into full play, which is beneficial to human health.