Can Tremella soup be kept overnight?

Drinking a bowl of Tremella soup in the hot summer is the most comfortable thing. In fact, Tremella soup has many benefits to the human body. Drinking Tremella soup regularly on a daily basis not only has the function of promoting salivation and quenching thirst, but also helps with sleep and promoting the health of the spleen and stomach. At the same time, Tremella soup is also a food rich in collagen, so drinking Tremella soup is also one of the best beauty methods for women.

It is precisely because of the high health value of Tremella soup that many people have the habit of drinking Tremella soup in daily life. And in the folks, it is said that Tremella soup that has been left overnight cannot be drunk. Is this really the case? Can Tremella soup be drunk again after it has been left overnight?

Tremella soup is an excellent dessert in summer. It is sweet, sticky and refreshing when drunk chilled, nourishing but not greasy. It has the functions of nourishing the spleen and appetite, replenishing qi and clearing the intestines, promoting sleep and strengthening the stomach, nourishing the brain, nourishing yin and clearing heat, and moisturizing dryness. Tremella is rich in collagen and has the effect of moisturizing the skin. However, I don't know when a saying began to circulate on the Internet that "Tremella soup cannot be kept overnight". The details show that after Tremella soup is kept overnight, the nitrate it contains will be reduced to nitrite under the decomposition of bacteria. Nitrite will destroy the human hematopoietic function and is one of the common carcinogens.

So, can Tremella be eaten overnight? Can Tremella soup be kept overnight? Is Tremella kept overnight poisonous?

After carefully reading these descriptions that believe Tremella fuciformis cannot be eaten overnight, I found that almost all similar descriptions seem to be quoted from the same place, because the writing style and wording are exactly the same, which feels very suspicious.

There are three doubts:

First of all, does Tremella contain much nitrate? Will it increase after soaking?

Secondly, how much will the nitrite increase if left at room temperature and in the fridge for 24 hours (overnight)?

Third, how much are they consumed? Are nitrites ingested in amounts that could cause danger?

Ingredients of Tremella:

The main component of Tremella is polysaccharides. Tremella does contain a lot of nitrogen, including nitrates, but that is the content in the dry product. After soaking, one pound of fungus can become 9-10 pounds, and the nitrate content in it has been reduced to one tenth. The nitrate content of fresh wood ear is only about 120 mg/kg, which is far lower than the content in many leafy vegetables (FAO standard: the nitrate content of first-class fresh vegetables is 432 mg/kg). The nitrite content is about 2.5 mg/kg, which is much lower than the standard for fresh vegetables (the standard for pollution-free vegetables is less than 40 mg/kg). Moreover, nitrates and nitrites are highly soluble substances. During the soaking and cleaning process, they will be dissolved into the soaking water again. Therefore, the content will further decrease after washing several times.

Will the nitrite increase after Tremella is left overnight?

Here we take the experimental data of wood ear as an example. The experiment measured the content of fresh fungus after being stored at room temperature and in the refrigerator for 24 hours and found that the changes were very small regardless of the storage temperature. The article also determined the effect of boiling on the nitrite content of wood ear mushrooms. After being stored at room temperature for 24 hours, the nitrite content increased from 2.19 mg/kg to 2.59 mg/kg. Such a small change has a negligible impact on human health. Although there is no data on Tremella fuciformis, it can be inferred theoretically that its change pattern should be similar to that of Auricularia auricula.

The last important question is, how much black fungus and white fungus can people eat every day?

The usual consumption amount does not exceed 5 grams of dry product, which is equivalent to about 50 grams of fresh product. If you use Tremella fuciformis to make soup, the amount will be even smaller, and you only need to eat one or two pieces a day. Even if we say a little more, based on 100 grams of fresh weight (enough to fill two bowls), the daily intake of nitrite does not exceed 0.3 mg. The dose of nitrite that causes poisoning in the human body is more than 200 mg, which is several hundred times the difference. In comparison, the amount of nitrite people get from eating pickled vegetables, stale vegetables, pink meat dishes, ham, sausage, braised meat, and sauced meat will be dozens or even hundreds of times higher than this amount.

Therefore, the claim that eating overnight Tremella fuciformis can cause poisoning is purely alarmist. So far, there have been no reports of poisoning due to eating overnight white fungus or black fungus. This is only possible if someone deliberately and illegally adds nitrite or nitrate to Tremella fuciformis.

Based on the above analysis, overnight Tremella soup is safe under refrigerated conditions. Of course, like all foods, the refrigerated storage time should not be too long. In addition, try to heat it thoroughly before eating to prevent microbial infection. This is a general rule that applies to all refrigerated foods. This site has also seen online that someone has sought confirmation from an expert that Tremella soup does indeed not produce nitrite. Cook more Tremella soup at one time, divide it into small portions and store them in the refrigerator. They can be kept for 1-2 days and there is no need to worry. If you soak too much Tremella at one time, just put it in the refrigerator to prevent it from changing taste and becoming smelly. You can still cook and eat it the next day.

Can Tremella soup be kept overnight? Tremella, a plant of the genus Tremella of the family Tremellar fungus, is also known as white fungus, snow fungus, and tremella, and is known as the "king of fungi". It is mild in nature, sweet, light and non-toxic. It grows on rotten wood of broad-leaved trees in summer and autumn. Distributed in more than a dozen provinces in China, including Zhejiang, Fujian, Jiangsu, Jiangxi, and Anhui. At present, there are more than 100 species of trees used for artificial cultivation in China, including basswood, cork oak, acuta australis, Quercus balsamina, and Castanopsis carlesii. Tremella is not only a precious nutritional supplement, but also a tonic for strengthening the body. Royal aristocrats of all dynasties regarded Tremella fuciformis as a "longevity product" and "elixir of life". Tremella is mild and non-toxic. It not only has the effects of nourishing the spleen and appetizing, but also has the effects of invigorating qi and clearing the intestines, and can also nourish yin and moisten the lungs. In addition, Tremella can enhance human immunity and increase the tolerance of cancer patients to radiotherapy and chemotherapy.

Can Tremella Soup Be Stored Overnight? -- Therapeutic Effects of Tremella

Tremella is sweet in taste, neutral in nature, and enters the lung, stomach, and kidney meridians;

It has the effects of strengthening the essence, nourishing the kidneys, moistening the intestines, benefiting the stomach, replenishing qi, harmonizing blood, strengthening the heart, nourishing yin, moistening the lungs, promoting body fluid, strengthening the body, nourishing the brain, refreshing, beautifying, rejuvenating the skin, and prolonging life; it is used to treat lung heat cough, lung dryness and dry cough, irregular menstruation in women, gastritis, constipation and other symptoms; it is a good tonic for patients with yin deficiency and hyperactivity of fire who are not affected by warm and nourishing tonics such as ginseng and antlers. The medicinal properties of Tremella fuciformis act slowly and need to be consumed for a long time to be effective.

Can Tremella soup be kept overnight?

With the application of refrigerators, preserving food has become more and more convenient. Can Tremella soup be kept overnight? Experts say it is best not to drink Tremella soup that has been left overnight. The Shenyang Food and Drug Administration recently reminded that there are some things to pay attention to when eating overnight food.

Tremella soup is a high-end nutritional supplement, but once it is left overnight, the nutrients will decrease and harmful ingredients will be produced. Because Tremella fuciformis contains more nitrates, if it is left for too long after being cooked, the nitrates will turn into nitrites.

Some experts have found that the nitrite content in boiled water is higher than that in raw water. Nitrite can form carcinogenic nitrosamines in the human body, and the nitrite content in water that is boiled repeatedly for too long or for more than 24 hours will increase significantly. After boiling water has been left for 24 hours, the nitrite content is 1.3 times that of when it was just boiled. Residents of our country have the habit of drinking boiled water. It is best to drink it immediately after boiling or only drink boiled water on the same day. Do not drink boiled water that has been boiled for too long. After the tap water boils, boil it for another 3 to 5 minutes. The content of harmful substances such as nitrite and chloride will be the lowest, making it most suitable for people to drink. People in some areas like to make soup and put the leftover soup in the refrigerator and boil it the next day before drinking it. The healthy way to eat it is: do not add salt or other seasonings to the soup base. After the soup is cooked, use a clean spoon to scoop out the portion you want to drink that day. If you can't finish it, it's best to put it in a clay jar or glass container in the refrigerator. Because leftover soup is kept in aluminum or stainless steel pots for a long time, chemical reactions are likely to occur.

Can you drink Tremella soup overnight? In fact, this depends on the specific situation. If the Tremella soup has changed its taste, it is best not to drink it. Of course, if you keep it well and it does not cause bacteria, drinking it occasionally should not have much impact on your health.