Are bacteria afraid of boiling water?

There are a lot of bacteria in our lives. As the bacteria flow with the air, some bacteria will enter the human body. These bacteria that enter the human body may cause diseases. Therefore, for the sake of health, people should try to avoid these bacteria from entering the human body. There are many ways to eliminate bacteria, and we should choose the one that suits us best. So are bacteria afraid of boiling water? Can boiling water be used to kill bacteria?

Not necessarily. Some bacteria need to be boiled in heated water for 3-5 minutes before they die. Some bacteria are very resistant to heat. Many thermophilic bacteria can grow in an environment above 100 degrees Celsius, and the highest temperature of boiling water is only 100 degrees.

Scientists have discovered that bacteria living in areas near craters can even survive in an environment of 120 degrees. Therefore, boiling water cannot kill all bacteria in food. Of course, if a food does not contain this tenacious pathogen, it will also not contain other stubborn pathogens. Then boiling water can kill all the pathogenic bacteria in the food.

Scientific disinfection methods in daily life:

(1) Boiling disinfection: Place the cleaned tableware in boiling water for 2 to 5 minutes;

(2) Steam sterilization: Place the cleaned tableware in a steam cabinet or box and heat it to 100 degrees for 5 to 10 minutes.

(3) Oven disinfection: such as infrared disinfection cabinet, the temperature is generally around 120 degrees, and the disinfection time is 15 to 20 minutes.

Some heat-resistant bacilli or spores are uncommon and harmful

Generally speaking, pathogenic Escherichia coli, Salmonella, Vibrio cholerae, etc., most of them will not die until they are exposed to high temperature of 100℃ for 1-3 minutes or heated at 80℃ for 10 minutes. Therefore, scalding bowls with boiling water before eating can only kill a very small number of microorganisms. Boiling, circulating steam or using infrared disinfection cabinets are effective methods. Of course, boiling the bowl with water can at least wash away the dust or oil stains in the bowl, which is also acceptable.