Can't drink overnight tea Tea is a very healthy drink, but people often say: "overnight tea, poisonous like a snake." Therefore, many people will choose to drink a freshly brewed tea while sipping tea from the previous day. So can you drink overnight tea? Experts said that the concept of overnight tea and the time it takes to store tea is very difficult to distinguish. In the morning, it is common to drink tea in the afternoon. After the tea in the middle of the night, you wake up early in the morning and drink it. The change in tea water will not be greater than during the day. Needless to say, if there is any difference between the two, it would be the high temperature during the day and the change in tea may be even greater. Can overnight drink tea? Experts said that overnight tea does not have a lot of toxic side effects, you can rest assured that drinking. When tea is left for a long time, what changes will happen? Research shows that the most important change is the further oxidation of tea polyphenols, and the color is deepened. A glass of clear, green tea, especially if it is stored under high temperatures, will lose its green color and increase its yellowness. This is the oxidation of tea polyphenols in tea water to form yellow red, red brown oxidation products, mainly theaflavins, thearubigins, and tea browns. These products are non-toxic and do not harm the human body. Therefore, overnight tea or tea that has been brewed for a long time is not poisonous as long as it is not degraded. In summer, the temperature is high and the tea is susceptible to rancidity and odor. If it is left for more than 24 hours, it is best not to drink, otherwise it will cause diarrhea. Overnight tea is safe and drinkable, so how to drink tea is more healthy? Drinking tea notes, take a look. Tea Notes 1, do not drink tea on an empty stomach Fasting tea, tea into the lungs, will be cold spleen and stomach, is equal to "quote the wolf into the room", China has "no drinking hollow tea" theory since ancient times. 2, do not drink hot tea Too hot teas have strong irritations in the throat, esophagus, and stomach. If you drink tea that is too hot for a long time, it may cause damage to these organs. The temperature of tea should be below 56 degrees. 3, do not drink strong tea Strong tea contains caffeine, more theophylline, strong stimulation, easy to cause headaches, insomnia. 4, do not brew too long The brewing time is too long, tea polyphenols, lipids, aromatic substances, etc. can be automatically oxidized, not only the tea soup is dark, bad taste, low aroma, loses taste value; but also due to vitamin C, vitamin P, amino acids in tea leaves. Reduced by oxidation, so that the nutritional value of tea soup greatly reduced. 5, it is not appropriate to brewing too many times In general, after tea leaves are brewed 3-4 times, there is basically no tea juice. According to the relevant test, the amount of water-containing extracts in the head-opening tea soup is 50%, 30% of the total amount of water-containing extracts in the second-kind tea soup, 10% of the three-leaf tea soup, and only 1-3% of the four-leaf tea soup. Subsequent brewing will cause some harmful ingredients in the tea to be leached, because the trace elements in the tea are often leached out.
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