Old white tea can be drunk overnight. Overnight tea refers to the overnight tea, deterioration is not suitable for drinking, but not deterioration of overnight tea, in the medical has its own wonderful use. Overnight tea is rich in acid, can prevent capillary bleeding, such as stomatitis, tongue pain, eczema, bleeding gums, sores and pus ulcers, etc., can be treated with overnight tea. Overnight tea can not drink the claim is no scientific basis.

Old white tea overnight can be able to drink the reasons:

The tea placed for a long time, the main change is that the further oxidation of tea polyphenols, deepening color. Because the tea just brewed out of the tea, tea in the antioxidant substances theaflavin was soaked out, generally showing a yellow color. And set aside for a longer time, theaflavin will gradually change into thearubigin, the color of tea will also become yellow-red, is also said to deepen the color. A cup of clear tea, especially in the case of higher temperatures placed for a long time, will lose the green color, increase the degree of yellow. This is the oxidation of the tea polyphenols in the tea water to form yellowish red and reddish brown oxidation products, mainly theaflavin, theaflavin, theaflavin, theaflavin and so on. These products are non-toxic and will not harm the human body.