Tea knowledge How to store tea scientifically?

Tibetan tea taboos: 1Avoid tea with a high water content 2

It is strictly forbidden for tea leaves to come into contact with peculiar smells 3Prevent tea from squeezing the altar storage method: Use this method to store tea, and the container selected must be dry and tasteless, and the structure must be tight.

Common containers include pottery jars, rust-free iron barrels, etc. In addition, it should be reminded that tea is usually not suitable for mixing, because black tea is fermented and processed, flower tea is won by floral aroma, and green tea is self-contained. Tank method:

At present, there are many families that use commercially available tin cans, bamboo boxes or wooden boxes for tea. These cans or boxes, if they are double-walled, are better protected from moisture. Tin cans or boxes containing tea should be kept in a cool place, away from moisture and direct sunlight.

If the canned tea is not drunk temporarily, it can be sealed with transparent adhesive tape to prevent humid air from penetrating. Bag storage method: At present, the most commonly used is to use plastic bags to preserve tea, which is also one of the easiest and most economical ways to store tea at home.

Whether the use of plastic bags to package tea can play an effective role in preservation, the key is: first, the tea itself is dry, and second, the packaging materials must be selected. Refrigeration method:

By refrigerating the tea leaves in the refrigerator, you can receive satisfactory results. But there are two points that must be noted: one is to prevent the fishy smell in the refrigerator from polluting the tea; Second, the tea must be dry. ··

Cryogenic storage method.

Insist on the tea storage environment below 5 degrees Celsius, that is, use cold storage or freezer to store tea, the use of this method should be noted:

1) If the storage period is less than 6 months, it is most economical and effective to maintain the refrigeration temperature at 0 5 degrees Celsius; If the storage period is more than half a year, it is better to freeze (-10 to -18 degrees Celsius).

2) It is best to store in a dedicated refrigerated (frozen) warehouse, if it is necessary to refrigerate (freeze) with other foods, the tea should be properly packaged and sealed completely to avoid adsorption of peculiar smells.

3) The air circulation in the refrigerated (frozen) warehouse is good, and the cooling effect has been achieved.

4) When purchasing a large amount of tea at one time, it should be divided into small packets (cans) first, and then put into the refrigerated (frozen) warehouse, and the required brewing amount should be taken out each time, and the same bag of tea should not be frozen and frozen repeatedly.

5) When taking out the tea leaves in the refrigerated (frozen) warehouse, the temperature of the tea leaves in the tea can rise to a similar room temperature before taking out the tea leaves.

Methods for long-term storage and disposal of tea.

1) The water content of tea is controlled at 3-5% for long-term storage, and the level of roasting and dryness has a very important relationship with the storage period of tea; Generally speaking, the roasting is heavier, and the lower the moisture content can be stored for a longer time.

2) When the optimal storage period of tea expires, it should be taken out and roasted. You can wash the rice cooker until it is odorless, pour the tea leaves on a porcelain plate or tin foil and put them into the rice cooker, open the lid to the [keep warm] position, the lid is half covered, turn it in a timely manner, about half a day, the tea leaves turn from old to ripe and fragrant, it is advisable to crush it with the index thumb, and then pack and store it after cooling down.

3) Some people use microwave ovens to dry and roast tea, but the heating time is short, and the furnace door is closed tightly, or it is not easy to control, which often causes the defects of carbonization of the appearance of tea or the failure of the old taste to escape, and the technology still needs to be restrained.

The safest way is to entrust the collection of tea to a familiar tea master or tea farmer to roast it on your behalf.

The storage of tea can be divided into two types: short-term and long-term.

For short-term tea that has been drunk within 1-2 months, tea canisters or zipper tea bags are recommended.

Because the tea leaves stored for a short period of time may have to be drunk every day, if the packaging is too tight, it will be very troublesome to take the tea, so you can choose to take the more convenient packaging.

However, it should be noted that whether it is a tea caddy or a tea bag with a zipper, their sealing performance is not too good, so they are only suitable for short-term tea storage.

If you want to store tea for a long time, it is recommended to use a three-layer packaging method, that is, a combination of aluminum bags, plastic bags and corrugated boxes.

First of all, the tea is packed into an aluminum bag, and the bag mouth is tied firmly with a rope, which can play the role of sealing, light, moisture, and odor.

Secondly, the aluminum bag is packed into a plastic bag, and the bag mouth is also tied with a rope, which can play the role of sealing, moisture-proof, and odor-proof;

Finally, the plastic bag is packed into a corrugated box and sealed with tape, which can not only prevent collisions, but also facilitate stacking and storage.

However, there are some caveats to the three-layer packaging method.

For example, aluminum bags and plastic bags must be food grade.

For example, corrugated boxes must be standard with a thickness of five layers.

For example, do not open the box frequently after sealing, so as to avoid the moisture in the air from entering the inside of the tea, generally 4-6 months to open the box and check once.

In addition, it is the choice of the tea storage environment.

A damp basement, a smelly kitchen, and a sunny balcony room are not suitable for storing tea.

We can store the tea in the study or not in the bedroom, put it on the cabinet, and do a good job of leaving the wall and the ground, so as to ensure that the tea is not affected during storage.

If you want to know how to store tea without spoilage, you must first understand tea and why tea spoils? What has gone bad?

The main changes in the quality of tea during storage are the increase of water content, the decrease of taste substances, the decrease of aroma, and the easy decomposition and discoloration of color. The root cause of these changes is due to a series of changes in many chemical components of tea, and there are many factors that affect these chemical changes, mainly temperature, humidity, oxygen, and light.

Temperature: Tea leaves during storage. Generally, the higher the temperature, the faster the quality deterioration rate, and the increase of temperature is conducive to the activity of enzymes in tea, thereby accelerating the aging of tea.

Experiments show that the economically suitable temperature for tea storage is 0 5, and the effect is better if the temperature is as low as -25. Therefore, it is best to use low-temperature refrigeration when available.

Relative humidity of the air:

The water content of tea is best controlled at 3 5, and when the relative humidity of the air is above 50, the water content of tea will increase significantly, and the air humidity is large, which will not only affect the color, aroma and taste of tea, but also breed mold.

During oxygen storage, tea polyphenols, vitamin C, theanine, and other substances in tea will be slowly oxidized. Therefore, it is best to isolate the air during tea storage and conditionally vacuum nitrogen-filled packaging.

Under direct light, the light tea will not only turn yellow in color, but also produce a bad smell and accelerate the aging of the finished tea. Therefore, it is best to use opaque materials and containers for the storage of tea.

To sum up, the key points of reasonable storage of tea are: low temperature, drying, deoxygenation, and avoiding light. Here are a few ways to store tea at home.

A tile jar tea storage method before storage with peach blossom paper or rice paper to wrap the tea leaves, and then at the bottom of the tile altar put a lime bag (the ratio of tea and lime 5:1), and then put the tea bag on the top, after filling the jar with cotton tightly wrapped tightly covered. After a long time, when the quicklime has melted, the quicklime needs to be replaced.

2) Storage in iron cans.

Wrap the tea leaves in paper first, then put them in a tin can, close the lid tightly, seal them with scotch tape and keep them in a cool, dry and clean place.

3) Storage in plastic bags.

Choose two plastic bags, place the tea in the bag, squeeze out the air, seal it with a sealing machine, and then put a plastic bag on it, seal it at the same time, and finally put it into a dry, tasteless, sealed iron can for preservation.

4) Charcoal storage.

Black tea and oolong tea are generally preserved in this way due to their own flavor characteristics. Put 1 kg of charcoal in a cloth bag, put it in a tile jar or iron box, put it in the dried tea leaves to be stored, and cover it tightly. After the charcoal regains, it needs to be taken out to dry or dry, and then cooled before use.

5) Refrigerator storage.

This is the current common method of storing tea, put the dried tea leaves into a tea can, seal it with tape paper, and then put it in a double plastic bag, and then put it in the refrigerator at 5 o'clock. You can also use aluminum-plastic composite bags to pack tea leaves and place them in the refrigerator. It is suitable for the storage of all kinds of famous and high-quality green tea.

Different types of tea are stored differently in the summer. Green tea is a non-fermented tea, as long as the tea leaves are sealed in a tea can, covered with a plastic bag, sealed and put in the refrigerator.

Black tea is a fully fermented tea, which ages and deteriorates slowly, as long as it is stored in a closed, dry container, such as a clay pot. The fragrant tea in oolong tea can be stored in the same way as green tea, and the strong aroma can be placed in a tin can. Black tea (such as Pu'er tea) is a post-fermented tea, and the most important thing to store black tea is to keep it dry and ventilated, such as putting it in a purple sand jar.

Precautions for preserving tea leaves:

The container for storing tea leaves should be dry, clean, and free of peculiar smells. Tea leaves in containers should be placed in a dry and ventilated place. Do not put it in a humid, hot, unclean, or exposed place.

Do not have camphor, medicines, cosmetics, cigarettes, detergents and other items with a strong odor. It should also be noted that different types and grades of tea cannot be mixed and preserved.

When taking out the tea from the refrigerator freezer, you should first let the temperature of the tea in the tea pot rise to room temperature before taking it out, otherwise the tea is easy to condense the moisture in the air, thereby increasing the water content of the tea and causing the remaining tea to accelerate deterioration. The purchased tea can be divided into multiple packets, and then put in the refrigerator, and only one packet needs to be taken out each time you drink tea, which has little impact on the quality of other teas.

The above content refers to People's Daily Online-Storing tea has five preventions, black tea is stored in clay pots, and green tea is placed in the refrigerator.

1. Conditionally, the tea can be loaded into the iron can with an air extractor to extract the air in the tank, and then weld and seal, so that the tea can be stored for two or three years, if the conditions are not enough, you can use the thermos gall to store, because the water bottle gall is isolated from the outside air, the tea is loaded into the gall, after the plug is tightly covered, sealed with white wax, and covered with adhesive tape, which is simple and easy to keep at home.

2. Ordinary bottles, cans, etc. should be used to store tea, and it is better to use a clay pot with an inner and outer double lid or a large mouth and abdomen, which can reduce the air contact in the container, and the container lid should be tightly combined with the container body to prevent moisture from entering.

3. The packaging materials of tea are required to have no peculiar smell, the tea container and the use method should be as closed as possible, have good moisture-proof performance, reduce contact with air, and be stored in a dry, clean and odorless place.

Historical traceability. Tea originated in China, and tea was first used as a sacrifice. However, it was used as a vegetable by people in the late Spring and Autumn Period, developed into medicinal use in the middle of the Western Han Dynasty, and developed into a high-end drink for the court in the late Western Han Dynasty.

The earliest remains of artificially planted tea were found at the Tianluo Mountain site in Yuyao, Zhejiang, which has a history of more than 6,000 years. Tea drinking began in China. The leaves are leathery, oblong or oval, and can be soaked directly in boiling water, and are divided into six categories according to the variety and production method, as well as the shape of the product.

According to the season, it can be divided into spring tea, summer tea, autumn tea, and winter tea. It is reprocessed into a variety of wool tea or refined tea leaves to form re-added tea, including flower tea, pressed tea, extracted tea, tea food, tea-containing beverages, etc.

1. Iron can storage method.

Choose the best tinplate double-lid color tea on the market as a container. Before storage, check whether the body and lid of the can are closed and cannot leak. When storing, the dried tea leaves should be canned, and the cans should be tightly packed. This method is convenient to use, but it is not suitable for long-term storage.

2. Hot water bottle storage method.

Choose a warm thermos as containers. Fill the dried tea leaves into the bottle, fill them to minimize the amount of air retention, close the bottle with a cork, seal the edge with white wax, and then wrap it with adhesive tape. Due to the low amount of air in the bottle and the stable temperature, this method is also effective and easy to maintain.

3. Ceramic altar storage method.

Choose a dry and odorless, airtight ceramic altar, wrap the tea leaves with kraft paper, place them around the altar, embed a lime bag in the middle, put the tea bag on it, fill the altar with cotton wrapping. Lime is replaced every 1-2 months. This method uses the hygroscopic properties of quicklime to make the tea not damp, the effect is better, and the quality of tea can be maintained for a long time, especially some precious teas such as Longjing and Dahongpao, which are particularly suitable for use.

4. Food bag storage method.

First wrap the tea leaves with clean and odorless white paper, then wrap a piece of kraft paper, and then put it into a plastic food bag without gaps, squeeze it gently, squeeze out the air in the bag, and then tie the bag tightly with a thin soft rope to take a plastic food bag, put it on the outside of the first bag, squeeze it gently, squeeze the air in the bag tightly with a rope, and finally put it into a dry and odorless closed iron drum.

5. Charcoal storage method.

Take advantage of charcoal's extremely moisture-absorbing properties to store tea. Burn the charcoal first, immediately cover it with a brazier or iron pot to extinguish it, and then wrap the charcoal in a clean cloth and place it in the middle of the clay pot containing the tea leaves. The charcoal in the cylinder should be replaced in time according to the situation of Hu Chao.