Can't eat frozen steamed buns? If stored for more than 3 days, aflatoxin will grow. Is this really the case?
With the development of science and technology, the level of all aspects has been greatly improved, and people's lives are getting better and better. All kinds of home appliances began to enter thousands of families, especially the popularization of refrigerators, which brought great convenience to people's lives.
We all know that food has a shelf life, especially in summer. It's hot, which speeds up food spoilage. However, the advent of the refrigerator provided a safe place for food that had a relatively short shelf life and avoided food waste.
However, the refrigerator is not a safe. It can only prolong the shelf life of food, but it does not mean that food will not rot or spoil. No matter what kind of food is stored in the refrigerator for a long time, it grows bacteria and contaminates other foods in the refrigerator.
Take steamed buns as an example. Recently, there has been a saying on the Internet that steamed buns cannot be stored in the refrigerator for a long time. If it exceeds three days, aflatoxin may be produced. After eating, it can endanger health. Is this correct? Next, let's take a look.
Let’s first understand what aflatoxin is.
As early as 1933, people discovered aflatoxin, which was classified as a first-class carcinogen by the Cancer Research Institute of the World Health Organization. Aflatoxin is a type of Aspergillus flavus.
It is said that the toxicity is more than 60 times higher than that of arsenic. It is the most toxic type of many molds and the most harmful to human health.
The currently discovered liver cancer carcinogen is aflatoxin (AFB1), and aflatoxin is divided into B1.B2.G1.G2.M1.M2 and so on.
Once aflatoxin enters the human body, the toxin content in the liver is higher than that in other tissues and organs, indicating that the liver is more affected by aflatoxin, and the spleen and adrenal gland can also be detected in the kidney, but generally cannot be detected in muscle. Since aflatoxin is mainly metabolized by the liver, its harm mainly lies in the damage to liver tissue.
Can't eat frozen steamed buns? Is it true that aflatoxin is stored for more than 3 days?
As a representative of northern staple food, steamed buns are almost inseparable from every meal. They also have their own steamed buns at home. They can be eaten for many days in a large pot, and can handle eating problems for several days.
It is also sold in supermarkets now. For convenience, we will also go to the supermarket to buy steamed buns. Sometimes we buy a lot of steamed buns. If we can't eat it as a meal, we often keep eating it.
However, when many people see the statement that steamed buns stored in the refrigerator for three days will develop aflatoxin, they are restless. is this real?
To this end, relevant experts conducted an experiment, dividing 100 steamed buns into 10 groups, one group of 10 steamed buns, the first group was refrigerated for one day, and the second group was refrigerated for two days. Three, four, five days, and so on. After comparing the freezing days of 10 groups of steamed buns, it was found that steamed buns frozen in the refrigerator for more than three days would not produce aflatoxin.
However, after being heated at a high temperature, the steamed buns also lose their original soft taste, because the steamed buns are stored in the refrigerator for a long time, resulting in a large amount of water loss.
It can be seen that because the cold air in the refrigerator is not suitable for the growth of mold, and the suitable temperature of aflatoxin is around 25-40°C, and the temperature of the freezer compartment of the refrigerator is below 0°C, therefore, steamed buns should be stored in the refrigerator for a long time Aflatoxins are not produced, so there is nothing to worry about.
Which foods are easily contaminated by aflatoxin?
soaked fungus
Edible fungi are usually non-toxic, such as fungi, white fungus, shiitake mushrooms, etc., but if the fungi are soaked in water for too long, they will cause pollution, produce a large amount of aflatoxin, damage the liver, and induce liver disease.
Grain and oil products
Peanut oil. Corn oil. If the production enterprise does not strictly select raw materials, use moldy peanut, rapeseed, corn and other edible oils for production, or have no process or insufficiently controlled process, it will cause aflatoxin to exceed the standard.
dairy products
Moldy yogurt, pimples and other dairy products can be infected with aflatoxin and induce liver cancer. While yogurt is great, once it's past its use-by date, it's best to just throw it away and not force it.
moldy peanuts
Moldy foods, especially starch-rich foods, which are starch-rich foods such as peanuts, are prone to mold and breed this carcinogenic mold.
If a peanut is moldy, it is recommended not to ask for a whole bag of peanuts. Don't think it's a waste. You should know that this kind of mold is usually transmitted in the form of spores, which can easily affect the mildew of food.
What should I do if I accidentally eat food contaminated with aflatoxin?
Drink milk. Milk can protect the gastric mucosa and reduce the harm of food mold to the stomach.
Drink plenty of water. Drinking plenty of water can help promote the body's metabolism, help food digestion, and promote food excretion from the body as soon as possible.
If symptoms of food poisoning such as diarrhea and vomiting occur, pay attention to a light diet. If you experience gastrointestinal discomfort after eating moldy food, you must maintain a light diet.
If severe vomiting, abdominal pain, diarrhea and other symptoms occur after eating moldy food, you must check immediately to prevent serious negative effects.