Tea water can be drunk overnight

Tea brewed at night before going to bed, get up and drink the next day, the tea did not deteriorate, drink of course no problem. If the tea leaves are steeped for too long, especially if they are left for too long at higher temperatures, they will lose their green color and increase their yellow color. This is the oxidation of tea polyphenols in the tea to form yellow-red, red-brown oxidation products, mainly theaflavin, theaflavin, theaflavin, theaflavin and so on.

These products are non-toxic and will not harm the human body. This change is not day and night, the daytime temperature is higher, the change is still a little bigger. But if the tea leaves are steeped for too long, it will breed bacteria, deterioration occurs, of course, can not drink, generally no more than 24 hours to drink are not related.

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