Can tea be put in the refrigerator?
Among many kinds of tea, green tea is most suitable to be stored in refrigerator, especially tea with strong aroma like Longjing. If the storage time is short, you need to drink it at any time. In addition, the fragrant Tieguanyin must also be kept in the refrigerator, because this kind of tea has low fermentation degree and is easy to deteriorate.
Tea leaves such as black tea, Pu 'er tea and scented tea do not need to be stored in the refrigerator. Because black tea belongs to fermented tea, the content of tea polyphenols in tea is small and easy to preserve; Scented tea has a strong fragrance, but low temperature storage will inhibit its fragrance and reduce its freshness and concentration. Pu 'er tea belongs to post-fermented tea and contains beneficial strains. Enzymes need ventilation, shade and dryness to function. Therefore, at room temperature, storing tea in a ventilated and dry place is the correct way to preserve Pu 'er tea.
The fragrant Tieguanyin is not suitable for storage in the refrigerator. Due to the high fermentation degree of Luzhou-flavor Tieguanyin, the content of tea polyphenols in tea is low and the aging speed is slow. Generally speaking, if you can finish drinking tea within three months, you just need to put it in a cool and dry place. If you want to keep it for a long time, you need to seal it in cans.
Need to remind everyone that when tea leaves are stored in the refrigerator, we should pay attention to the sealing of tea leaves and the smell of the refrigerator. Because tea has strong hygroscopicity and taste absorption, it is easy to get wet or smell. Therefore, tea leaves must be sealed before being put into the refrigerator. You can put them in a box, cover them with plastic wrap, seal them and put them in the refrigerator.
In addition, when tea leaves are stored in the refrigerator, they must not be put together with other odorous items to prevent the odor from escaping. At the same time, when the tea leaves are taken out of the freezer of the refrigerator, the temperature of the tea leaves in the teapot should be raised to room temperature before being opened and taken out, otherwise the low-temperature tea leaves will easily condense water in the air, thus increasing its water content and accelerating its qualitative change.
Is the tea in the refrigerator refrigerated or frozen?
The content of chlorophyll in young leaves is very high. Under the conditions of light and heat, it is easy to lose green and turn brown. Tea polyphenols are easy to oxidize during storage, leading to browning. Vitamin C is an important ingredient with nutritional value in tea, and its content is closely related to the quality of tea. Vitamin C is also an easily oxidized substance, which is difficult to preserve.
After vitamin C is oxidized, it not only reduces the nutritional value of tea, but also turns tea brown and loses its fresh and refreshing taste. When the water content of tea is too low, tea is easy to age and deteriorate. When the water content of tea leaves is about 3%, tea leaves are easy to preserve. When the water content of tea leaves exceeds 6%, or the air humidity is higher than 60%, the color of tea leaves becomes darker and the quality of tea leaves becomes worse. The water content of finished tea should be controlled at 3%-6%, and if it exceeds 6%, it should be reheated and dried.
The higher the temperature, the faster the aging of tea leaves. During the storage of tea, the browning rate will be accelerated by 3-5 times when the temperature rises by 65438 0℃, and the browning of tea can be inhibited when stored below 65438 0℃. Refrigeration at 20℃ can almost regularly prevent tea from aging and deterioration.