Tea leaves that have been left for a long time do not necessarily mean that they cannot be drunk, ho

<>1. Obvious discoloration.

The color of tea leaves generally becomes darker after a long period of storage, such as white tea after about five years of storage, the color will change from apricot yellow to dark yellow to reddish brown, but tea soup.

It's always been transparent and bright. However, it should be noted that if the tea soup is not only darker, but also very turbid, and the concentration, astringency and freshness of the taste are also greatly reduced, such tea is likely to have deteriorated.

2. Peculiar smell.

A friend specially bought a tea stalk to go back to absorb formaldehyde, indicating that tea has strong adsorption, if it is put together with something with a peculiar smell, or it is not sealed well before being put in the refrigerator, it is easy to carry the smell. If you smell the tea leaves there are obvious mothballs.

taste, oily smell, such tea is better not to drink.

3. Softening and changing.

The best moisture content of tea.

It is about 5%, and if the moisture content exceeds 10%, the tea leaves are easy to get damp. Normal tea leaves are crisp to the touch and easy to break. If the tea leaves are soft when pinched, feel wet, or smell bad, then the tea must have deteriorated and can no longer be drunk.

Through the above understanding, we know the way to identify moldy tea, so can moldy tea be drunk again?

If the tea leaves are moldy, you can no longer drink them, and drinking moldy tea leaves may cause dizziness, diarrhea and other food poisoning.

symptoms, and in severe cases, lesions in kidney function. Therefore, no matter what kind of tea it is, once it becomes moldy, it can no longer be drunk.

Of course, there are several types of tea that are suitable for long-term storage, even the older they get.

Fragrant. For example, black tea.

Pu'er, white tea, oolong, etc. The premise of the older the old tea is, the more fragrant it is, the better the storage conditions, the ventilation, the non-humidity, and the storage conditions are very critical. A good old tea must be pure and odorless, and there will be no resurgence and change, otherwise it will not be able to drink no matter how expensive it is.

You can take a small amount of boiling water to brew, if the color is darker than the original, and there is a peculiar smell, it is moldy, you can also twist the tea leaves with your fingers, if the tea can be pinched into powder, it means that there is no mold, indicating that the dryness is also very good, the tea mold is gray-white, and you can smell the smell of mold.

We can judge by the color and smell, we can observe the color and luster, whether the surface of the tea is dry, if the surface of the tea has some white fluff, and the smell has a choking smell, it means that it has mold.

We can touch the tea leaves, if the tea leaves feel particularly soft, it means that the tea leaves have moldy and cannot be drunk.

1. Packaged tea leaves; Generally speaking, tea leaves with packaging will have an expiration date printed on the packaging. In this case, as long as the tea leaves are within the marked expiration date and stored correctly, they can still be drunk with confidence.

2. Unpackaged tea; Unpackaged tea, which includes bulk tea and homemade tea, can be distinguished in this way: in appearance, if expired mildew occurs, such tea is usually discolored, and most of them are whitish; In terms of texture, most of the expired tea leaves are light, and the flexibility is poor, and they will break when twisted. Expired tea leaves will give off an stale smell or smell that is significantly different from normal tea leaves; The color of its tea soup will also be obviously cloudy and opaque.

1. The tea leaves are moldy and cannot be drunk. Any kind of moldy substance is not edible, and the mold contains a lot of mycin poison, such as aflatoxin and aflatoxin. Aflatoxin is a toxin that can cure liver cancer, and it is a very well-defined toxin.

2. Moldy tea is the result of contamination by penicillium and aspergillus, if you drink moldy tea water, it will cause dizziness, abdominal pain and diarrhea. In severe cases, it causes organ necrosis. Once moldy, you must resolutely throw it away and never eat it again, otherwise it will cause harm to the body.

Now more and more people like to taste tea, the tea ceremony is very popular in many places, people who like to drink tea know that there are many types of tea, different teas give people the feeling is different, the preservation of tea is also particular, if the Tan Hall is not well preserved is easy to mold, can the moldy tea be drunk? Is moldy tea edible?

1. Can you drink moldy tea?

Some people think that it is a pity to discard it, only to let it be destroyed is simply dried and blown, and it is very dangerous to want to brew and drink, because the moldy tea leaves often breed a lot of harmful molds and secrete a lot of toxins that are harmful to health.

2. The damage of moldy tea leaves to the body

Moldy tea leaves produce harmful substances to the human body, drinking such tea, abdominal pain, diarrhea, dizziness and other symptoms will occur, severe cases affect some organs, cause some diseases, so don't be greedy for small things.

3. How to preserve tea

When buying tea, you should choose good quality tea, and you should also pay attention to proper preservation after buying. The freshly bought tea is fully packaged. As long as it is not disassembled, it can be stored in a dry place, which can ensure that it will not deteriorate for half a year to a year.

4. Tips

In order not to make the tea moldy, and in order to drink fresh tea every time, try to buy only a small amount of tea or buy small packages of tea when buying tea, or reduce the number of times you open the package to prevent the tea from being exposed to the air too much. This does not guarantee the quality of tea, and it is convenient to brew.

5. Can you still drink tea after it expires?

Whether the tea can be drunk after expiration depends on the specific situation.

1) The case that I can drink.

The degree of dryness of the tea leaves is very high, and the preservation and sealing method is also very scientific, the shelf life of this tea is generally very long, if it is not opened, the tea is not damp, even if it is expired for a period of time, it can be drunk, and it has little impact on the quality of tea.

2) If you can't eat it.

The tea itself is relatively dry, and it is often placed on a relatively humid tea table, which is easy to absorb water and get damp, and this kind of tea will deteriorate relatively quickly.

1. To judge whether the tea is moldy, it can be identified by three methods: dryness, smell, color, and appearance.

2. Dryness: Normal tea has a high degree of dryness, and it is fragile when pinched by hand, while moldy tea is sticky and humid.

3. Color: The color of tea leaves is tender green, dark green, brown and other normal colors, and gray, black spots and pieces of objects are moldy.

4. Aroma: Tea is mostly fragrant and pleasant, while moldy tea has a musty smell and pungent nose.

5. Appearance: The appearance of normal tea leaves is uniform and compact, and the moldy tea leaves are loose and soft.

Tea, like any other food product, has an expiration date.

Limit. Most teas have a shelf life of around 18 months. If the tea leaves are left for a long time, they are prone to mold. Tea mildew generally refers to the growth of white hairs in the tea leaves, which smell musty, and the severely mildewed tea leaves will rot and agglomerate, and green hairs will grow on them. Pu-erh tea.

There will also be black mildew.

However, it should be distinguished that there are some valuable varieties such as Biluochun.

Mao Feng, Yunwu tea, Yunnan red.

Tuocha, Pu'er, etc., there are white hairs on the tea leaves, which is because the tea leaves are delicate, not the white hairs that grow after the tea leaves are moldy.

Tea mold is caused by contamination with penicillium and aspergillus, which can produce Aspergillus flavus (World Health Organization.

The cancer research institute classifies it as a Group 1 carcinogen, which is a highly toxic substance). Aspergillus flavus is resistant to high temperatures and cannot be eliminated by frying at high temperatures. Its harm lies in the destructive effect on human and animal liver tissue, and can lead to liver cancer in severe cases.

Or even death. Therefore, drinking moldy tea may cause symptoms of food poisoning such as dizziness, dizziness, and diarrhea, and may cause lesions of vital organs such as liver and kidneys. Animal experiments have shown that moldy and spoiled tea may also cause cancer!

It doesn't matter if it's green tea, black tea, oolong tea.

It's still Pu'er tea, and once it gets moldy, you can't drink it.

However, although tea leaves have a relative shelf life. However, even after the expiration date, some non-moldy tea leaves can still be drunk, but the taste of the tea itself will be affected. Especially for unfermented green tea, once it has been left for a long time, the fragrance will be replaced by "stale taste".

Fully fermented and semi-fermented teas such as black tea and oolong tea can be stored for a longer period of time. However, after a long time, the taste of tea will inevitably be replaced by "stale taste".

Therefore, some experts suggest that tea leaves that have been left for too long, or tea leaves that have been damp and moldy, will not only affect the taste of drinking, but are more likely to harm your health, so it is recommended not to drink it. The ancients said that "old wine is new tea", which is also the truth.

1. It is not recommended to drink.

Tea will breed a large number of harmful molds after being damp and moldy, such as: Penicillium, chlorocycline, Huang Tianjing, etc., the human body drinks moldy tea not only tastes very poor, but also may cause diarrhea, abdominal pain, dizziness, limb weakness and other poisoning symptoms, will have an extremely adverse impact on health, so it is not recommended to drink tea after mold, so as not to outweigh the losses.

2. If you drink moldy tea water for a few days, but there is no discomfort, then you don't need special treatment for the time being, stop drinking, and observe your physical condition.

However, if there are symptoms such as abdominal discomfort, nausea, dizziness, etc., it is recommended to drink plenty of warm water and then immediately go to the hospital to avoid more serious consequences.

31. Look at the appearance. Generally, after the tea is moldy, it can be judged in appearance, and the moldy tea is not as clean as the good tea leaves, giving people a feeling of dirt and dampness.

2. Smell the smell. Good tea smells distinctly tea; And moldy tea leaves smell musty or other peculiar smells.

3. Take a soak. Good tea leaves are brewed out of the tea soup is clear and free of impurities; The moldy tea leaves are mostly dark brown after brewing, and the tea soup is turbid and unclean.

4. After re-drying the moldy tea leaves, it can be used for the following purposes:

1. Put the tea in a gauze bag and then put it in the refrigerator, which can play a role in deodorization.

2. Put the tea leaves in the wardrobe to help prevent moisture.

3. After processing seafood or meat food, if there is a fishy smell and oil stains on your hands, you can use tea to soak in water to absorb it.

4. Brew the moldy tea leaves with boiling water, crush them, and put them on the roots of the plants to make flower fertilizer.

<>1. Choose the right jar. When we usually preserve tea at home, we must choose the right jar, the best is to use dark glass jars, or use jars and purple sand clay pots, etc., or use bamboo boxes or wooden jars, it is best not to use paper bags to preserve tea, paper is also relatively easy to absorb moisture, will shorten the shelf life of tea.

2. Choose a container that can be sealed. When we choose a container to preserve tea, we must choose the kind that can be sealed, and cannot be sealed or open. For example, the general glass jar has a lid that can be closed, which can seal the container, isolate the air and moisture, and prevent the tea from getting wet.

When wet, the tea leaves are not only susceptible to mold, but also reduce the nutrients inside.

3. Bask in the sun. If the tea has been damp, we can find a sunny and good weather to spread out the tea directly to dry, do not expose to the sun for a long time, just find a sunny noon head to dry for a while, the moisture in the tea can be sold on land, because if the tea wants to be preserved, it still has to be protected from light.

1. The tea will be moldy, and the moldy tea will grow a lot of small pieces of white hair, emitting a pungent musty smell. Many precious tea leaves will have some small fluff on them, which is called chahao, which is a natural phenomenon. Tea cakes can be stored for a long time, if the tea leaves are moldy due to improper storage, it may affect the health of the body after drinking.

2. The mildew of tea is generally caused by high temperature and humidity. Moldy tea leaves will grow a lot of small pieces of white hair, and there will be a pungent musty smell, so it is not recommended to continue drinking spoiled tea.

3. The tea leaves with serious mold will turn from white to green, and will emit a strong musty smell, which is easy to distinguish. Many precious tea leaves will have some small fluff on them, known as tea hair, which is not caused by mold.