Although Academician Li Lanjuan truly said that alcohol can be used for disinfection, the alcohol she mentioned specifically refers to medical alcohol with a concentration of 75%. Generally, the wine we drink cannot reach this concentration. Moreover, the disinfection mentioned here refers to the disinfection of the body surface. Drinking alcohol means drinking wine into the body, so how can we say disinfection?
In fact, the rumor about "drinking to sterilize" is not a recent one. This has been said for a long time. For example, if you have a cold, you should drink some Laobaigan to kill the bacteria in the body. Get better quickly! ?. But the facts show that drinking alcohol cannot kill bacteria, because he still had a fever when he should have a fever, and drinking liquor could not prevent the progression of the disease at all. As for the reason why drinking alcohol cannot be used for disinfection, there are currently two opinions: the alcohol used for disinfection specifically refers to alcohol with a concentration of 75%
Children who have been to the hospital probably know that alcohol can be used for disinfection and sterilization. Yes, but not all alcohol has the effect of disinfection and sterilization. According to experimental research, only alcohol with a concentration of 75% has the best bactericidal effect. The reason why alcohol can be used to sterilize is because it can coagulate and denature the proteins on the bacterial cell membrane, thereby increasing the permeability of the cell membrane, and finally causing the bacteria to absorb water, swell, and die.
If the concentration of alcohol is too high, it will form a protective cover on the surface of the bacteria, which will not kill the bacteria at all; but if the concentration of alcohol is too low, it will not completely kill the bacteria. Therefore, no matter whether the concentration of alcohol is higher or lower than 75%, it cannot kill bacteria.
But the alcohol concentration of the liquor we usually drink generally does not exceed 58%. According to the standard of 75%, this is already low, so these liquors do not have a very good sterilization effect. of. Taking a step back, even if there is liquor with a concentration of 75%, it is not something that people can endure. Whether you can drink this wine is another matter. Even if you drink it, the alcohol will be diluted by the digestive juices, and it will still not reach the 75% concentration. It will also hurt your stomach, and the gain will not be worth the loss. Alcohol disinfection only refers to body surface disinfection
As I just said, the reason alcohol can disinfect is because it can coagulate and denature the proteins on the cell membrane. But the human body is also made up of thousands of cells. If you drink alcohol, it will naturally kill the cells in your body.
Therefore, we usually only use alcohol to disinfect the body surface. After all, no one wants to harm themselves because of disinfection!