If white tea is moldy or stale, the tea soup will turn dark brown, and the concentration and freshness of tea will also weaken. This shows that the tea has expired, so it is better not to drink it. Because tea leaves are out of date, they will gradually get wet and produce a large number of molds. The ingredients inside will change and the nutritional value will be lost. If the expired tea leaves are soaked in water, after the temperature drops, bacteria will corrode the soaked tea leaves and produce microorganisms, which pose a threat to human health. So it's best not to drink expired tea.
: 1, avoid moisture: when the water content of tea reaches 8.8, it may be moldy; When the temperature reaches 12, if the temperature is appropriate, mold will grow rapidly and mildew spots will appear on tea. Therefore, don't put tea in a humid environment such as the kitchen.
2. Avoid light at low temperature: Both sunlight and light will have an impact on the quality of tea. The higher the grade of green tea and scented tea, the stronger the sensitivity to light. Therefore, don't put tea on the windowsill or near the spotlights.
3. Separate placement: After the bought tea leaves are wrapped in paper, they should be wrapped and sealed with two layers of polyethylene food bags, and then placed in a dry place. Don't put tea with odorous objects, such as mothballs, soap, perfume, cigarettes, etc.
4. Separate storage: It is best to store tea in iron boxes or porcelain cans, followed by iron boxes, wooden boxes and bamboo boxes. Plastic bags and cartons can also be used to store tea. The iron box should be placed in a cool place to avoid direct sunlight. On the one hand, it can prevent the iron box from oxidation and rust, on the other hand, it can inhibit the deterioration of tea in the iron box. Tea can also be packed in plastic bags, but choose thick food packaging bags.
References:
Baidu encyclopedia entry white tea