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Zebrafish as a Model to Assess the Teratogenic Potential of Nitrite
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[Content of N-nitrosamines in smoked fish and canned food]

I N Kim, G N Kim, L V Krivosheeva

    Gigiena I Sanitariia
    |October 17, 2002
    PubMed

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    Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
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    Physical Properties of Amines

    Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.