Is it better to keep tea fresh by refrigeration or freezing?

Tea leaves are kept fresh in the cold storage.

Tea has a strong adsorption and is easy to absorb the odor in the air, so attention should be paid to moisture-proof, mildew-proof and odor-proof during storage. Some tea leaves, such as green tea and fragrant oolong tea, have low temperature and long storage time.

Under the influence of moisture, tea dryness, environmental humidity, temperature, oxygen, light and other factors, tea in the air will have a series of complex chemical reactions. Therefore, in order to maintain the characteristics of tea, we must avoid the influence of the above factors on tea.

Cold storage can greatly prolong the life of tea, delay the deterioration of tea, and is conducive to maintaining the quality. The general storage temperature is below 5℃. Traditional oolong tea, black tea, white tea and Pu 'er tea can be kept without refrigerator. Low temperature will inhibit the aroma of tea.

Matters needing attention in tea preservation

1. Refrigeration: This method is the most common and practical in ordinary families. Put the tea into a fresh-keeping bag, seal it, and then put it in the refrigerator for refrigeration. But when storing, we must pay attention to avoid storing with other foods, otherwise it will cause tea leaves to absorb the taste of food and become stale.

2. teapot: take a teapot, wrap the tea with film paper and seal it, then put it in the teapot and cover it. Tea leaves preserved in this way are relatively sealed, which is very practical and convenient.

3. Stainless steel tin can: seal the tea package with plastic wrap, then put it into the stainless steel tin can and cover it tightly. The sealing effect of this preservation method is also good, which can well preserve the nutritional components of tea.

4. Glass jar: You can buy a large glass tea jar in the supermarket to store tea, which is also the simplest and most practical way to preserve tea. There is a rubber ring around the lid of the special teapot, so it is difficult for air to enter, which largely ensures the sealing degree of tea leaves.

5. Foam box: If there are a lot of tea leaves to be preserved, it is most practical to keep them in a foam box. Prepare the foam box and put some quicklime blocks in the corner of the box. Then pack and seal the tea leaves, put them in a foam box and cover them.