Aflatoxin M₁ survey on randomly collected milk powder commercialized in Argentina and Brazil.

摘要

Aflatoxin M₁ (AFM₁), the main monohydroxylated of aflatoxin B₁ (AFB₁) formed in liver and excreted in the milk, has toxicological proprieties comparable to those of AFB₁, albeit a lower carcinogenic potency. The presence of AFM₁ was investigated in 30 samples of powdered milk purchased in Argentina and Brazil. The samples were analyzed using an immunoaffinity column for cleanup and HPLC-FLD for determining AFM₁. The quantification limit was 0.1 mug/kg. AFM₁ was found in all the samples at levels ranging from 0.1 to 0.92 mug kg-1 with average concentration of 0.39 mug kg-1