First, the preservation method:

1. Lime block preservation method. The quicklime blocks are packed in bags made of fine white cloth. Put the green tea in a white cotton paper bag, wrap it in a kraft paper bag, then wash and dry the small pottery jar, and put white paper under it. Green tea bags are put in small-mouthed pottery pots with one or two lime bags embedded in the middle. Seal the altar with several layers of grass, and finally compact it with bricks or planks.

2. Carbon storage method. The operation method is basically the same as the lime block preservation method. The materials used are only burnt charcoal.

3. Green tea cold storage method. Drying tea leaves with steam, the water content is between 3% and 5%, not exceeding 6%. Green tea and tea leaves are put into aluminized composite bags, heat sealed, air in the bags is pumped out by a breathing air pump, nitrogen is injected at the same time, sealed with a sealing paste, placed in a tea box, and then stored in a low-temperature refrigerator.

Second, save the taboo:

1. Avoid humidity: when storing green tea, the relative humidity is 60%, and when it exceeds 70%, mildew spots will occur due to moisture absorption, leading to acidification and deterioration.

2. Avoid high temperature: The best storage temperature of green tea leaves is 0-5℃.

3. Avoid sunlight: sunlight will promote the oxidation of green tea pigments and esters, and can decompose chlorophyll into pheophytin.

4. Avoid oxygen: chlorophyll, aldehydes, esters, vitamin C, etc. The leaves in green tea can easily combine with oxygen in the air. The oxidized green tea leaves will make the green tea soup red and deep, which greatly reduces the nutritional value.

5. Avoid odor: Green tea leaves contain high molecular palm enzymes and terpenoids. This substance is extremely unstable in nature and can absorb odor widely.

Extended data

Family protection:

1. Pot tea storage method. The water content of tea shall not exceed 6%. Lime can be used to remove moisture. The specific operation method is the same as the lime block preservation method.

4. Canning method. The container is made of metal cans, boxes, cans, boxes or iron or aluminum or paper or paper products. It is important that the tea leaves are dry and the bag mouth is sealed.

3. Plastic bags store tea. Choose high-density, high-pressure, thick, strong and tasteless food packaging bags. Tea leaves can be wrapped in soft and clean paper in advance and then sealed in food bags.

4. The method of storing tea with thermos. Waste thermos bottles with poor thermal insulation can be used, filled with dry green tea, covered with cork and sealed with wax.

5. Refrigerator preservation method. Put green tea into high-density, high-pressure, thick, strong and tasteless food packaging bags, and then put them into the freezer or freezer of the refrigerator.

Refer to Baidu Encyclopedia-Tea Storage