Occurrence of aflatoxin M1 in retail milk samples from Bogota, Colombia
Titel:
Occurrence of aflatoxin M1 in retail milk samples from Bogota, Colombia
Auteur:
Diaz, G. J. Espitia, E.
Verschenen in:
Food additives and contaminants. Pt. A, Chemistry, analysis, control, exposure & risk assessment
Paginering:
Jaargang 23 (2006) nr. 8 pagina's 811-815
Jaar:
2006-08-01
Inhoud:
A study was conducted to establish the occurrence and levels of contamination of aflatoxin M1 (AFM1) in retail milk from Bogota, Colombia. A total of 241 samples were analysed during 2004 and 2005. Samples were cleaned up by an immunoaffinity column and AFM1 was quantified by liquid chromatography with fluorescence detection. A total of 69.2 and 79.4% of the samples analysed during 2004 and 2005, respectively, were found to contain levels of AFM1 above 10 ng l-1. Levels of contamination ranged from 10.7 to 213.0 ng l-1 in 2004, and from 10.6 to 288.9 ng l-1 in 2005. Despite the high incidence of AFM1 found in the milk samples analysed, all samples complied with current local regulations, which allow AFM1 content in milk up to 400 ng l-1. However, due to the high incidence of AFM1 in milk found in the present study, it is recommended that a permanent surveillance programme be established for milk consumed in Bogota in order to prevent milk lots containing levels above the regulatory level entering the food chain.
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