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    Home > Food News > Nutrition News > Are disposable lunch boxes safe to use?

    Are disposable lunch boxes safe to use?

    • Last Update: 2022-09-23
    • Source: Internet
    • Author: User
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    Whether it is take-out or packaging, disposable lunch boxes are indispensable.
    For disposable lunch boxes that are mostly made of plastic, many consumers have doubts: Will harmful substances be precipitated when hot meals are served? Experts from Jiangsu Quality Inspection Institute and National Food Packaging Product Quality Inspection and Testing Center (Jiangsu) will tell you the answer through field experiments

    Simulated liquid detection total migration

    Consumers commonly call disposable lunch boxes "toxic", and a more standardized expression should be that the total migration volume is unqualified
    In this experiment, the inspectors selected several common disposable lunch boxes on the market, and conducted a food packaging migration experiment in response to consumers' concerns

    Mobility experiments are primarily intended to examine the total amount of migration
    The total migration amount refers to the total amount of non-volatile substances obtained by evaporating the soaking liquid to dryness after the food contact materials are soaked in food simulating liquids such as simulated vinegar, simulated wine, and simulated oil under certain conditions

    Colored lunch boxes may discolor

    Through testing procedures such as soaking, evaporating to dryness, drying with constant weight, and weighing, some experimental vessels are transparent and unchanged, while some have white or pink marks on the bottom
    The inspector said that the white or pink marks were precipitated from the disposable lunch boxes
    From the results of the food packaging migration experiment, it can be concluded that the disposable tableware of qualified quality is relatively safe for the human body, while the inferior lunch box may have a large amount of toxic and harmful substances precipitated, and the colored lunch box may also exist discoloration phenomenon

    It is worth mentioning that the presence of precipitation does not mean that the disposable tableware is unqualified, because the national standard stipulates that the limit of the total migration amount is 10mg/dm2, and only exceeding the limit is unqualified

    Consumption reminder: prefer transparent disposable lunch boxes

    In response to the results of this inspection, operators and consumers are advised to choose transparent and colorless disposable tableware as much as possible

    Many consumers feel that it is too wasteful to use the packaged disposable lunch box only once, so can it be used repeatedly after cleaning? Inspectors said that it is best to avoid re-use of disposable lunch boxes

    Try to avoid heating in the microwave

    Can disposable lunch boxes be put directly into the microwave? The inspectors suggest that if you want to heat food in a microwave oven, you must pay attention to the material of the tableware.
    If the tableware label is not PP (polypropylene) material, or there is no label that can be heated in a microwave oven, it is best not to use a microwave oven to heat it

    It is reported that at present, the melting point of PP is 167 ° C, which is the only plastic lunch box or disposable lunch box that can be put into the microwave oven, and its outer packaging is marked as No.
    It should be noted that even if some tableware labels indicate polypropylene material, if the manufacturer does not indicate that it can be used for microwave heating, consumers are better not to heat it by microwave
    (Editor Li Chuang)

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