When many people eat in restaurants, in order to disinfect the tableware, they always use the hot tea water on the table to scald the cups and chopsticks. Can they disinfect it? Can boiled water and scalded tableware be disinfected? The truth may not be what you think.
Hot water can’t kill bacteria
For tableware, high temperature boiling is indeed the most common way of disinfection. Many bacteria can be killed by high temperature disinfection. However, boiling water and scalding bowls can’t achieve such an effect. Only the dust on the tableware can be removed. In order to achieve the effect of high temperature disinfection, two conditions must be met: one is the temperature of action, the other is the time of action. Generally speaking, most of the pathogenic Escherichia coli, Salmonella, Vibrio cholerae, etc. will die after 1-3 minutes of high temperature action at 100 ℃ or 10 minutes of heating at 80 ℃. Therefore, boiling water before eating can only kill a very small number of microorganisms. Boiling, circulating steam or using infrared ray to disinfect the cupboard are effective methods. Of course, scalding with boiling water can at least remove the floating dust or oil from the bowl, which is not bad. As for wiping with napkin, it can’t disinfect. There are many people think that wet paper towels have disinfection ingredients, so they are used to clean bowls. This is not true. Wet paper towels contain many chemical ingredients such as emollients, which may not be able to be imported. Using them to wipe the bowl increases the safety risks.
In fact, using boiling water to scald the bowl is mostly worried about food poisoning. It is true that there will be microbial residues on the tableware with incomplete disinfection, but the hidden dangers in the food are the most important. For example, meat that has not been thoroughly heated, cold dishes or cut fruit that have been stored for too long. Good food is the most important thing.
Therefore, hot water tableware can not be sterilized, only wash off the dust and stains on the tableware, or dissolve and wash away the residual detergent. Don’t use hot water to iron the tableware later! If you are interested in how to disinfect children’s tableware, please go to this safety net for relevant information.