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    Home > Food News > Nutrition News > Can boiling water disinfect tableware?

    Can boiling water disinfect tableware?

    • Last Update: 2021-06-28
    • Source: Internet
    • Author: User
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    Ruan Guangfeng
     
    Eating is the first element of safety.
    Therefore, everyone pays more attention to hygiene and loves to eat clean
    .
    Among the Five Points of Food Safety of the World Health Organization, ensuring hygiene is also very important
    .

     
    In order to ensure food hygiene and safety, we will also pay attention to a lot of things.
    For example, we must scald the tableware with boiling water before eating out.
    The leftovers that can not be eaten should be kept in the refrigerator, and they must be kept cool before they can be put in the refrigerator.
    .
    .
    However, are these practices really necessary?
     
    1.
    Hot water to blanch the tableware, it cannot be disinfected
     
    When many people eat out, they will use hot tea or hot water to burn the dishes and chopsticks, hoping to sterilize and clean
    .
    Especially for Cantonese, boiling a bowl with boiling water is almost a ritual before eating
    .
    But is it really useful to blanch tableware in boiling water? Can it really be disinfected?
     
    Indeed, if the tableware is not sufficiently cleaned and sterilized, or there is secondary pollution after cleaning and sterilization, then there may be some pathogenic bacteria, and it seems that it can be disinfected and sterilized if it is scalded
    .
    However, the facts are not so simple
    .

     
     
    To kill bacteria by heating, generally speaking, it takes at least seventy to eighty degrees and keep it for a few minutes
    .
    The hot tea and hot water provided by the restaurant is 70 or 80 degrees Celsius.
    When poured into the cold tableware, the temperature drops immediately, usually down to 50 or 60 degrees Celsius.
    There is no lethal effect on bacteria
    .

     
    Of course, if you rinse the tableware with water, some bacteria will run into the water and be dumped
    .
    This has nothing to do with whether the water is hot or not, it is simply cleaning
    .

     
    Therefore, ironing tableware with hot water will not have obvious validity effect
    .
    If you want to sterilize the tableware by ironing it, it is better to find a reliable and hygienic restaurant and go to fewer small restaurants and stalls
    .

     
     
    2.
    Should the food be kept cold before putting it in the refrigerator?
     
    It is inevitable that there will be leftovers when cooking at home, and everyone will naturally put it in the refrigerator
    .
    When is it appropriate? The folks have always said that the food must be kept cold before putting it in the refrigerator, or the refrigerator will break
    .
    In fact, this is a complete misunderstanding.
    Moreover, waiting for the food to cool before putting it in the refrigerator can easily cause bacteria to multiply and breed
    .
     
    After the food is fried, when the temperature starts to drop, the bacteria begin to "settle"
    .
    Studies have found that when the temperature of the food drops to 60 ℃, bacteria will start to grow; when the temperature drops to 40-30 ℃, the bacteria will reproduce happily and vigorously; and when the temperature drops to 7 ℃, most of the bacteria will stop and enter a dormant state
    .
    Only by quickly cooling the food to below 7 ℃ can it help inhibit the growth of bacteria and make the food safer.
    This requires us to put the food in the refrigerator as soon as possible
    .
    The World Health Organization also recommends that food should not be stored for more than 2 hours at room temperature
    .
     

     
    As for many people who worry that the refrigerator will break, they don't need to worry
    .
    The refrigeration efficiency of current refrigerators has been greatly improved.
    Although putting hot dishes in the refrigerator will slightly increase the burden on the refrigerator and consume a little more electricity, it is within the normal operating range of the refrigerator
    .
    It's not a pity to spend more electricity bills instead of bacteria that cause food to spoil.
    After all, safety is the most important thing
    .
     
    If you wait until the food cools down, it will inevitably breed a lot of bacteria.
    I don't think everyone wants to face this risk
    .
    Therefore, in order to prevent the growth of bacteria, the best way is to cook the vegetables and put them in the refrigerator for storage
    .
    At least, when the temperature of the food drops to the point where it is not hot, it can be put in the refrigerator
    .

     
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