How many years does the shelf life of tea expire, can you drink it?

Regarding the shelf life of tea, the standards of different manufacturers are different, and you cannot drink it after it expires.

Some green tea production enterprises do not write the shelf life on the packaging, some write the shelf life of 12 months, and more write the shelf life of 18 months; The shelf life of black tea is mostly 3 years; Black teas, including green brick tea, Pu'er raw tea, and ripe Pu'er tea, do not have an expiration date.

In fact, the quality of tea is easily affected by temperature, light, and humidity, and if it is not stored properly, the tea will lose the flavor of the original tea, and the taste, aroma, and soup color will deteriorate, or even deteriorate.

To judge whether the tea is expired, there are mainly the following aspects: to see whether it is moldy or old; Whether the green tea turns red, and the soup color turns brown and dark; The concentration, astringency and freshness of the taste decrease, in addition to the shelf life on the packaging. In addition, if it is loose tea, it is best not to drink it for more than 18 months.

Benefits of Tea:

1. Treatment of beriberi.

Tea contains a large amount of tannins, which have a strong bactericidal effect, especially for filamentous bacteria that cause athlete's foot. Therefore, people who suffer from athlete's foot will be cured after a long time by boiling tea leaves into thick juice to wash their feet every night. However, boiling tea and washing feet must be persistent, and there will be no significant effect in a short period of time.

2. Eliminate bad breath.

Tea has a strong astringent effect, and often holding tea leaves in your mouth can eliminate bad breath. Commonly used strong tea gargle, also has the same effect. The efficacy of Tieguanyin. If you are not good at drinking tea, you can soak the tea leaves and then hold them in your mouth, which can reduce the bitter taste and also have a certain effect.

The above content refers to the People's Daily Online-Tea Can Diet Therapy and Health Care Ten Effects of Tea.

People's Daily Online-Does tea have an expiration date? This type of tea has the longest shelf life.

What is the shelf life of tea? Can you still drink tea after the expiration date? Listen to what tea farmers have to say about rural farmers agriculture the first town of tea in China, rural life and food.

Tea has an expiration date, and it is not allowed to be drunk after it expires. The shelf life of tea is related to the quality of the tea, and the shelf life of different tea leaves is different. For example, the aging quality of Yunnan Pu'er tea is better, and the shelf life can be as long as 10-20 years; Wuyi Rock Tea has a more fragrant aroma and a more mellow taste, so it has a long shelf life.

But it is better to have fresh tea leaves in general, such as green tea, which can be stored at room temperature for about a year. However, the main factors that affect the quality of tea are temperature, light and moderation, and if stored properly, tea can be stored for a longer time.

<> "Can I drink tea after the expiration date?"

No. Tea leaves that have been placed for too long will be damp and moldy, and drinking moldy tea will not only taste bad, but also cause dizziness, abdominal pain, diarrhea, poisoning symptoms, and serious will lead to brain and kidney lesions.

When the tea expires, it cannot be drunk. The shelf life of tea is generally 18 months, and tea leaves that are generally left for too long are prone to moisture and mold. Of course, the shelf life of each tea is different, and the shelf life of some is better, and the shelf life is as long as ten or twenty years, but no matter how long the shelf life is, it is best not to drink the tea that has expired, which not only tastes bad, but also endangers health.

Even if the expiration date has not passed, but during the period due to improper storage caused by mold, can no longer drink, long-term drinking of moldy tea, the light will be dizzy, abdominal pain and other poisoning symptoms will rise, heavy will cause internal organs, brain and other lesions, even carcinomous.

Tea must be kept in an odorless, dry, airtight box or other container and then refrigerated. A small amount of tea can be sealed with a film bag with two layers of moisture-proof and placed in the refrigerator.

Whether it is green tea or black tea, it has a certain shelf life. If the expired tea leaves have a peculiar smell, do not drink them if they are damp and mildewed.

The shelf life of green tea and jasmine tea is relatively short, generally 12 months or 18 months, but if the quality of the tea product itself is excellent, the main thing is to dry and store it properly, and there is no problem with more than double the time.

Other teas, such as Tieguanyin, black tea, black tea, etc., have a relatively long shelf life. The shelf life of bulk black tea is generally 18 months, and up to 24 months when it is sealed in bags, cans, or packed in aluminum foil.

Tea expired can not be drunk, tea belongs to food, has a shelf life, need to be drunk within the shelf life, once the tea expires, its contents such as tea polyphenols, caffeine, amino acids, proteins, etc. will be lost, the taste is very poor; Secondly, once the tea leaves expire, they are easy to breed spoilage bacteria, and drinking them will cause physical discomfort, so the expired tea cannot be continued to drink.

Tea is divided into six categories, and its shelf life is also different, the more common green tea in general life, fresh tea is the best, and its shelf life is 12 months, while some brick tea, fermented tea, etc. are best to be aged for a period of time, and the shelf life is relatively long, up to more than 10 years.

Tea leaves have an expiration date. If you store it properly, you can still drink it when it expires.

The shelf life of tea will have a lot to do with the type of tea, the shelf life of green tea and jasmine tea loved by Beijing people will be relatively short, generally 12 months or 18 months, but if the quality of the tea product itself is excellent, it is mainly to be dried and stored, and there is no problem with more than double the time.

Theoretically, tea leaves that have passed their expiration date should not be consumed again. Because the quality may have changed and no longer meet the standards and requirements of the product. However, whether it is absolutely not allowed to be drunk after expiration still needs to be analyzed on a case-by-case basis.

After all, the deterioration of tea is a continuous and gradual process, not a sudden.

The shelf life of green tea is shorter, usually about 1 year, and the word "fresh" is paid attention to when tasting, that is, the fresher it is, the better the taste. After the expiration date, although the tea leaves will not necessarily spoil, the flavor will inevitably go downhill.

White tea is the only two of the six major tea categories that meet the requirements of "the older the more fragrant". As long as it is ensured that the white tea can be well aged in an environment of "sealed, dry, protected from light, cool and odorless". Then, every day can be the best time to drink.

When Wuyi rock tea exceeds the expiration date, there may be a phenomenon of rejuvenation. At that time, after the tea gradually absorbed the water vapor, a strange green taste appeared in the aroma, and the soup became thin and not as mellow as it was at the beginning. In such a situation, it is no longer suitable to drink.

The shelf life of black tea is usually around 1-2 years. As the storage period increases, you will find that the sweet and rich aroma of black tea, as well as the mellow longan soup-like taste, gradually disappear.

Different tea varieties have different shelf life, how should we buy tea in order to taste the best taste of tea.

The shelf life of tea, one to divide what tea, two to look at the preservation conditions, depending on whether you have strictly according to the above storage conditions to put, green tea, if you can achieve low temperature, put it for one or two years is no problem. Otherwise, it will deteriorate in two or three months, black tea, Pu'er, and rock tea can be put for a long time, but the taste will be differentGenerally speaking, the tea that has passed the shelf life, as long as there is no mold, can be drunk, but the experience will be different, especially green tea, fragrant Tieguanyin, etc., which are more likely to change the taste.

Does tea have an expiration date? Can you still drink expired tea? Most people get it wrong.

Usually, the shelf life of tea leaves in sealed packaging ranges from 12 months to 24 months, which will be indicated on the packaging bag of the tea. The shelf life of bulk tea is shorter, and when buying, try to choose the new tea of the year to buy.

At the same time, it depends on the degree of tea fermentation, Pu'er tea is a fully fermented tea, of course, the longer it is put the better, Tieguanyin is a semi-fermented tea, so the shelf life can not be stored like Pu'er tea, if you want to put it for a long time before drinking, it is recommended that you put the sealed tea leaves in the refrigerator freezer. This allows it to be stored for a longer period of time. It also does not affect the taste.

The shelf life of tea is related to the variety of tea, and the shelf life of different tea leaves is also different. Like Pu'er tea, black tea, etc., are fully fermented products, and the shelf life can reach 10 to 20 years. Therefore, the state does not set a shelf life for it.

Similar teas include Wuyi rock tea, Guangxi Liubao tea, etc., as long as this kind of tea is stored properly, not only will not deteriorate, but can improve the quality of tea.

In general, it is better to be fresh. Like green tea, the shelf life is generally about one year at room temperature. However, the main factors that affect the quality of tea are temperature, light, and humidity.

If stored properly, these factors are reduced or eliminated, and the tea leaves can last for a long time. To judge whether the tea is expired, there are mainly the following aspects: to see whether it is moldy or old; Whether the green tea turns red, and the soup color turns brown and dark; The concentration, astringency and freshness of the taste decrease, in addition to the shelf life on its packaging, and if it is a loose tea, it is best not to drink it for more than 18 months.

The shelf life of Pu-erh tea is generally 10-20 years.

There is no uniform standard for the post-aging life of Pu'er tea. Generally speaking, the transformation of an environment with high temperature and high humidity is much faster than that of an environment with low temperature and low humidity. The new tea soup is yellow and green, with a strong green taste, and it may have a sweet aroma and a bitter aroma depending on the raw materials.

There is no uniform standard for the post-aging life of Pu'er tea. Generally speaking, the transformation of an environment with high temperature and high humidity is much faster than that of an environment with low temperature and low humidity. The new tea soup is yellow and green, with a strong green taste, and it may have a sweet aroma and a bitter aroma depending on the raw materials.

Good Pu'er tea should be stored in a dry warehouse, which means that it is stored in a dry environment and avoid moisture. Too dry will slow down the aging of Pu'er tea, so there should be a certain amount of moisture.

In a drier environment, you can place a small glass of water next to the tea to increase the humidity in the air slightly. The humidity should be artificially controlled, the average annual humidity should not be higher than 75%, due to the warm marine climate along the coast, the humidity will be higher than 75% in the rainy season, so more attention should be paid to open the windows in time to ventilate and dissipate moisture.

Hello, you can first take a look at the expiration date on the package.

White tea can be stored for a long time under the premise of good storage conditions, and there is generally a saying that it is a three-year medicine and a seven-year treasure. Generally speaking, the shelf life of raw Pu'er tea is about 5 years, and the shelf life of ripe tea is more than 15 years after special fermentation. Like the brick tea of Yunnan ethnic minorities, the aging is better, and the shelf life can reach 10 to 20 years.

As long as the black tea from Hunan, the Fuzhuan tea from Hubei, and the Liubao tea from Guangxi are stored properly, not only will they not deteriorate, but they can even improve the quality of tea. The shelf life of black tea is relatively short, generally 1 year. The shelf life of bulk black tea is generally 18 months, the shelf life of bagged black tea is generally 24 months, and black tea canned or packaged in aluminum foil can be stored for about three years.

Green tea and yellow tea are still fresh, and it is better. Do not store at room temperature for more than one year.

Tea leaves that are stored for too long or in improper storage methods may lead to deterioration of the tea, which can cause microbial contamination such as mold and bacteria. After being ingested, it can cause various symptoms: nausea, vomiting, loss of appetite, abdominal pain, diarrhea, etc., so it is not recommended to drink expired tea.

The shelf life of black tea in bulk is generally 18 months, and the shelf life of black tea in sealed bags, cans, or foil packaging is 24 months. Tea should be kept away from humidity and high temperatures, and should not be stored together with detergents, spices, soaps, etc., to maintain the purity of tea. It is best to put it in a tea can, move it to a dark, dry place to preserve, and it is best to drink the tea as soon as possible after opening, otherwise the taste and aroma will be lost, and different tea leaves should not be mixed to drink, so as not to be able to appreciate the original taste of the tea.

The most famous black tea variety in China is Qimen black tea, which is the second largest tea category in China. Black tea is a fully fermented tea, which is refined from a series of technological processes such as withering, rolling, fermentation, and drying with suitable tea tree new tooth leaves as raw materials.

Because the chemical reaction centered on the enzymatic oxidation of tea polyphenols occurred during the processing of black tea, the chemical composition in the fresh leaves changed greatly, and the tea polyphenols were reduced by more than 90%, producing new components such as theaflavins and thearubigins. The aroma substances were significantly increased compared with fresh leaves. Therefore, black tea has the characteristics of black tea, red soup, red leaves, and sweet and mellow.

The main varieties of Chinese black tea are Qi Hong, Su Hong, Hu Hong, Sichuan Hong, Ying Hong, Yunnan Hong, Huo Hong, and Zhaoping Hong. Among them, Keemun black tea is the most famous. Ninghong Gongfu is produced in the Xiushui area of Jiangxi Province and is one of the earliest Gongfu black teas in China.

The above content refers to Encyclopedia - Black Tea.