Drinking a glass in leisure life has become a habit for many people to relax. In the past, everyone liked to drink white and yellow. In the past ten years, wine has entered the Chinese market and became one of the three major wines in January. However, the domestic wine market is mixed, and Chinese people who are accustomed to independent production, under the premise of having experience in brewing various fruit wines, began to become popular. Homemade wine, especially in many rural areas, is regarded by many people as genuine wine, with clean and hygienic process and no additional additives, so it is safe to drink. But is this really the case?

Recently, a woman brewed wine at home according to the online tutorial, and specially picked wild grapes on the mountain. After various complicated processes, the wine turned purple-white. The woman filled her husband with a glass of hope and drank a few glasses for herself. As a result, her husband fainted after only one sip, and was sent to the hospital for identification as poisoning. Fortunately, the rescue was timely and there was no serious problem. How can this home-brewed wine be poisoned? Still so poisonous? A woman brewed wine to win her husband's praise. It is expected that her husband was poisoned after drinking a glass, and she did something bad with good intentions. In fact, this is not the first time that an accident happened to the brewed wine. In previous years, several people offered to drink the wine brewed at home, and then several people fell to the ground, vomited, and felt cold. However, several people who failed to realize the seriousness of the problem were simply treated. When they went to the county hospital for examination on the third day, several people suffered different degrees of liver damage, and the liver had already failed. The culprit.

With the common people who brew their own wine, there are cases of poisoning every year, and many people wonder, there are many people who brew their own wine. Why do some people drink it for several years without an accident, while others are poisoned after drinking it? What is the problem?

Most of the poisoning caused by drinking homemade wine is formaldehyde poisoning. In fact, wine brewing is not as simple as we thought. Most of the wine brewing tutorials circulating among the people simply wash and crush grapes, and then add sugar, yeast, drinking water and so on to wait for fermentation. In fact, this practice is very unreliable and dangerous. Brewing wine should be careful in all kinds of processes. There are many reasons why self-brewed wine harms people frequently. Starting from the selection of grapes, we don't use the fruit grapes that we usually eat to make wine. The grapes are small and sour, which is what we often call wild grapes. This kind of grapes can accumulate more tannins and polyphenols at maturity, which makes them taste better in the fermentation process, and pesticides can't be used in the growth process of these grapes. This kind of grapes is for wine cultivation.

And when brewing wine, it is particularly important to remove formaldehyde. Grapes will produce formaldehyde with the increase of temperature in the fermentation process. Specialized wineries have mature formaldehyde removal processes, but this process does not exist in home-brewed wine, which is easy to cause formaldehyde poisoning. In addition, excessive formaldehyde is another cause of poisoning. There is no compliance sterilization process to kill and control the growth of miscellaneous bacteria in various processes of self-brewed wine. When the alcohol used for brewing does not reach a certain concentration, bacteria and fungi will breed rapidly, producing a large number of toxic substances, and finally brewing wine at home will be in danger of explosion. Grapes will produce a lot of gas during fermentation, and it is easy to explode when the bottle is too tight.