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Related Experiment Videos

N-Nitroso compounds in the diet.

W Lijinsky

    Mutation Research
    |July 23, 1999
    PubMed
    Summary
    This summary is machine-generated.

    N-nitroso compounds, potent carcinogens found in foods like cured meats and beer, are linked to sodium nitrite. Levels have declined due to reduced nitrite use and better manufacturing controls.

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    Area of Science:

    • Food chemistry
    • Toxicology
    • Carcinogenesis

    Background:

    • N-nitroso compounds are potent carcinogens, known for decades to form in foods treated with sodium nitrite.
    • Their formation involves nitrites and nitrogen oxides interacting with amino compounds, leading to compounds like nitrosodimethylamine (NDMA).
    • Concerns about N-nitroso compounds in food have prompted global monitoring.

    Purpose of the Study:

    • To review the presence and levels of N-nitroso compounds in various foods.
    • To discuss the formation pathways and sources of these carcinogenic compounds.
    • To highlight trends in N-nitroso compound concentrations and their implications for human health.

    Main Methods:

    • Review of existing scientific literature on N-nitroso compounds in food.

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  • Analysis of reported concentrations of N-nitroso compounds, particularly NDMA, in different food categories.
  • Examination of factors influencing N-nitroso compound formation and levels, including food processing and ingredients.

    • Main Results:

    • N-nitroso compounds are found predominantly in foods containing nitrites or exposed to nitrogen oxides, such as cured meats and beer.
    • Specific examples include NDMA in bacon (up to 100 µg/kg) and German beer (up to 70 µg/L).
    • Concentrations of nitrosamines in many foods have decreased over the past decades due to reduced nitrite usage and improved manufacturing processes.

    Conclusions:

    • Despite declining levels, the presence of even small amounts of nitrosamines in food remains significant due to potential human sensitivity.
    • Further research may be needed to fully understand the presence and risks of related compounds like alkylnitrosamides.
    • Ongoing vigilance in food production and monitoring is crucial for public health protection against carcinogenic N-nitroso compounds.