After the tea is preserved for a period of time, the original new tea taste
disappears, the old taste gradually reveals, and the internal quality will
change with the storage time. However, we must pay attention to the correct
storage of tea, to avoid deterioration and taste of tea. So, how can tea be
best preserved? Now let's take a look at how to keep tea.
Elements of Tea Preservation.
1. Moisture-proof, dry storage.
Tea must be dried (water content below 6%) for storage. A suitable amount of lime block or dry charcoal and other hygroscopic agents must be placed in the storage container to prevent the tea from regaining moisture and accelerating aging.
2. High temperature and low temperature storage.
Tea leaves age slowly at low temperatures, and deteriorate rapidly at high temperatures. The test proves that the aroma of tea is the strongest at 0 ℃, the aroma is reduced at 5 ℃, the aroma is slightly at 10 ℃, and the aroma is at room temperature; the tea leaves can maintain the original color for a longer time at 0 ~ 5 ℃, at 10 ~ 15 The color fades slowly. For example, the color of famous green tea changes easily at room temperature: therefore, the tea must be stored at a low temperature, or the tea sealed in a container can be stored in the refrigerator.
3. Protect from light.
The light has a destructive effect on the tea. The infrared radiation in the light can be converted into heat energy, which makes the tea warm up. The ultraviolet ray in the light can cause the aging of the tea, which intensifies the chemical changes of the tea, thereby accelerating the aging and deterioration of the tea. Therefore, it is necessary to avoid storing tea leaves under strong light, and to avoid storing tea leaves in fully transparent containers. If you need to store tea leaves in glass bottles or transparent plastic bags, it is better to choose brown.
4. Anti-oxidation, sealed storage.
The oxidation of lipid substances in tea leaves will produce an old taste, the oxidation of amino acids can lead to a decrease in umami taste, and the oxidation of polyacids will make tea taste lighter. If oxygen is cut off, it can inhibit the oxidative deterioration of tea, therefore, tea must be sealed and stored in oxygen.
Sealable containers such as tin cans, pottery jars, thermos bottles, food bags can be used for storage. The container is best lined with non-toxic plastic film bags. During storage, the opening time of the container should be minimized. When sealing, the air in the liner bag should be extruded to reduce oxidation. It is best to use oxygen-filled nitrogen-filled bags to store tea leaves, which can remain intact for 3 to 5 years, with good color, fragrance and taste.
5. Anti-adsorption, stored separately.
Tea itself has a loose texture and many pores, and has strong adsorption properties. Unpackaged tea leaves are placed with odorous items such as soap, gasoline, camphor, etc., which can immediately absorb the odor of these items. Therefore, the tea must be stored separately. The warehouse where the tea is stored should not be mixed with other materials. No volatile odor containers (such as camphor boxes, etc.) or containers that have absorbed other odors should be used to store the tea.
Elements of Tea Preservation.
1. Moisture-proof, dry storage.
Tea must be dried (water content below 6%) for storage. A suitable amount of lime block or dry charcoal and other hygroscopic agents must be placed in the storage container to prevent the tea from regaining moisture and accelerating aging.
2. High temperature and low temperature storage.
Tea leaves age slowly at low temperatures, and deteriorate rapidly at high temperatures. The test proves that the aroma of tea is the strongest at 0 ℃, the aroma is reduced at 5 ℃, the aroma is slightly at 10 ℃, and the aroma is at room temperature; the tea leaves can maintain the original color for a longer time at 0 ~ 5 ℃, at 10 ~ 15 The color fades slowly. For example, the color of famous green tea changes easily at room temperature: therefore, the tea must be stored at a low temperature, or the tea sealed in a container can be stored in the refrigerator.
3. Protect from light.
The light has a destructive effect on the tea. The infrared radiation in the light can be converted into heat energy, which makes the tea warm up. The ultraviolet ray in the light can cause the aging of the tea, which intensifies the chemical changes of the tea, thereby accelerating the aging and deterioration of the tea. Therefore, it is necessary to avoid storing tea leaves under strong light, and to avoid storing tea leaves in fully transparent containers. If you need to store tea leaves in glass bottles or transparent plastic bags, it is better to choose brown.
4. Anti-oxidation, sealed storage.
The oxidation of lipid substances in tea leaves will produce an old taste, the oxidation of amino acids can lead to a decrease in umami taste, and the oxidation of polyacids will make tea taste lighter. If oxygen is cut off, it can inhibit the oxidative deterioration of tea, therefore, tea must be sealed and stored in oxygen.
Sealable containers such as tin cans, pottery jars, thermos bottles, food bags can be used for storage. The container is best lined with non-toxic plastic film bags. During storage, the opening time of the container should be minimized. When sealing, the air in the liner bag should be extruded to reduce oxidation. It is best to use oxygen-filled nitrogen-filled bags to store tea leaves, which can remain intact for 3 to 5 years, with good color, fragrance and taste.
5. Anti-adsorption, stored separately.
Tea itself has a loose texture and many pores, and has strong adsorption properties. Unpackaged tea leaves are placed with odorous items such as soap, gasoline, camphor, etc., which can immediately absorb the odor of these items. Therefore, the tea must be stored separately. The warehouse where the tea is stored should not be mixed with other materials. No volatile odor containers (such as camphor boxes, etc.) or containers that have absorbed other odors should be used to store the tea.
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