Aflatoxin M1 in UHT cow milk samples collected in Burdur, Turkey

Abstract

Aflatoxins are secondary metabolites of toxigenic moulds of the Aspergillus species. Aflatoxin M₁, a metabolite of the potent carcinogen aflatoxin B₁ (AFB₁) occurs in milks of animals consuming feed contaminated with AFB₁. The aim of this study was to investigate the occurrence and levels of aflatoxin M₁ (AFM₁) in UHT milk samples consumed in Burdur city markets. In 2018, a total of 78 UHT milk samples were randomly collected from different markets of Burdur. The occurrence and contamination levels of AFM₁ in the samples were investigated by the competitive enzyme-linked immunosorbent assay (ELISA) method. Aflatoxin M₁ was detected in 24 of 78 samples (30.77 %) in concentrations between 4.30-127.44 ng/L (mean level: 47.54 ng/L). AFM₁ levels in 11 of these 24 positive samples were above legal limits of Turkey which is 50 ng/L for milk samples. It is concluded that the occurrence of AFM₁ in milk samples in particular may be considered as a possible hazard for public health.

Keywords

• Aflatoxin M1,UHT milk,occurrence,contamination level

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