how long can fresh tea be kept fresh in vacuum packaging? It is recommended to refer to the instructions. Because the shelf life of each industry is different
the shelf life of tea
tea belongs to food. All foods have a shelf life. The shelf life of tea varies according to its variety, process and storage method. The shelf life of green tea is 12 months, that of black tea is 24 months, that of Oolong tea is 24 months, that of black tea and white tea is 20 years, and that of yellow tea is 12 months, Therefore, beyond the shelf life, tea will also expire
shelf life of various teas:
1. Green tea
green tea belongs to non fermented tea, which is relatively easy to deteriorate. The shelf life is generally about one year at room temperature. The shelf life of green tea will be different according to the degree of shaqing and dryness. The main factors affecting the quality of green tea are temperature, light and humidity. If these factors are reduced or eliminated properly, the shelf life of green tea can be moderately prolonged
2. Oolong tea (green tea)
oolong tea belongs to semi fermented tea, and its shelf life is 24 months. Oolong tea shelf life depends on the moisture content of the tea itself, and the moisture content of the packaging materials used, such as Wuyi rock tea can also be drunk for 2 years, while the old fellow iron has a shelf life of 5 years, so the longer it is stored, the longer it is better. Br>
3. Black tea
black tea belongs to fully fermented tea, and its shelf life is longer than that of green tea. The shelf life of bulk black tea is generally 18 months, that of bagged black tea is 24 months, and that of canned or packaged with aluminum foil paper can be preserved for about three years
4. Yellow tea
yellow tea is a special existence in the six tea categories. Because it has less circulation, its production process is similar to that of green tea, with a stuffy stacking process. Therefore, yellow tea, like green tea, has a shelf life of only about one year
5. Black tea
black tea belongs to post fermentation tea, which has the characteristics of aging and fragrance. Generally speaking, black tea can be preserved for a long time, but generally speaking, it is 10 ~ 20 years, and the taste is better within the drinking period, and so is Pu’er tea
6. White tea
the older the white tea is, the better. Of course, on the premise of good preservation, white tea should be sealed, otherwise it will lose its water. White tea can also be stored for 10 to 20 years.
the preservation period of vacuum packed tea depends on the specific tea, which can not be generalized. According to personal tea drinking experience:
green tea, especially high-grade green tea, is generally stored in an environment with low temperature and appropriate humidity, and it is better to keep it within half a year. It can be kept for one year, but the taste will change rapidly and the quality will decline
generally, Tieguanyin can be preserved for one year in vacuum packaging when the temperature is low and the humidity is appropriate. Some people like to drink aged Tieguanyin tea, which can be preserved for two years, but the taste will change, the fresh flavor will weaken, and it has a mellow flavor
black tea, with appropriate humidity and low temperature, can be stored for one year
Pu’er tea can be preserved for two or three years and will be better and better
white tea. It can be kept for three or five years, which is more lasting.
fresh tea leaves can only be preserved for about three to six months under vacuum. After this time, the tea will also deteriorate.
the fresh tea of that season is usually stored in vacuum packaging and refrigeration for 6-8 months. If the time is longer, the new tea will be on the market the next year, and the original tea will become old
vacuum packed tea can be stored for about 2 ~ 3 years. Tea is divided into six categories: black tea, green tea, yellow tea, oolong tea, black tea and white tea. Some tight and strong oolong tea can be vacuum packed. Vacuum packaging can not only eliminate the influence of external environment, but also prolong the shelf life of tea.