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Aflatoxin M1 AFM1 is a major carcinogenic compound that may be found inmilk and dairy products resulting from ingestion of aflatoxin B1 by dairyanimals. The study aimed at determining the level of aflatoxin M1 in milk andmilk products from Bomet County. A total of 185 samples 150 raw milk and 35 processed milk and milk products were randomlycollected from milk collection sitesand randomly selected milk kiosks respectively. The AFM1 was analyzed using a commercial ELISA kit Ridascreen, aflatoxin M1R-Biopharm, Product code, R5812, Darmstadt, Germany. Out of 185 samplesinvestigated, 156 samples were positive for AFM1, an overall contamination rateof 84.32%. The samples with levels higher than the tolerance limit of 0.05 μg-lrecommended by Food and Agriculture Organization FAO and World HealthOrganization WHO limits were 43.8% mainly contributed by the raw milkcompared to processed milk 52.0% versus 8.6%. Processed milk hadinsignificant level of contamination with aflatoxin M1 Median 0.00 IQR: 0.00,0.00 μg-l with a minimum of 0.00 μg-l and a maximum of 0.69 μg-l. Raw milk showedsignificant contamination, median 0.09 IQR: 0.00, 0.50 μg-l with a minimum of0.00 μg-l and a maximum of 2.93 μg-l. Although there was no significantdifferences in AFM1 levels with study sites P = 0.217; the median levels ofaflatoxin M1 was high in sites 1, 3, and 7. The sites that had median aflatoxinM1 levels below the WHO-FAO acceptable limits of 0.05 μg-l were sites 2, 4 and6. Due to high incidence of AFM1 contamination of milk and milk samples inBomet County, there is need for regular monitoring and regulation of AFM1contamination in milk and its products in the County.

KEYWORDS

Aflatoxin M1, ELISA, Milk, Products, Bomet

Cite this paper

Langat, G. , Tetsuhiro, M. , Gonoi, T. , Matiru, V. and Bii, C. 2016 Aflatoxin M1 Contamination of Milk and Its Products in Bomet County, Kenya. Advances in Microbiology, 6, 528-536. doi: 10.4236-aim.2016.67053.





Autor: Gladys Langat1, Matsusawa Tetsuhiro2, Tohru Gonoi2, Vivienne Matiru3, Christine Bii4

Fuente: http://www.scirp.org/



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