Presence of Aflatoxin M1 in Pasteurized and UHT Milk Commercialized in Shiraz, Khuzestan and Yazd, Iran

Authors

1 Department of Food Hygiene, School of Veterinary Medicine, Shahrekord Branch, Islamic Azad University, P.O.Box 166, Shahrekord, Iran

2 Graduated of Food Sciences and Technology, School of Agriculture, Shahrekord Branch, Islamic Azad University, P.O.Box 166, Shahrekord, Iran

Abstract

Aflatoxin M1 (AFM1) is a hydroxylated metabolite of the carcinogen aflatoxin B1 (AFB1), and may be found in the milk of lactating animals that have ingested feedstuffs contaminated with AFB1 Between Jun 2010 and March 2011, 149 samples of pasteurized (n=90) and UHT (n=59) milk were collected from supermarkets in the cities of Shiraz, Khuzestan and Yazed, Iran. All samples were analyzed for AFM1 contamination by ELISA and 142 (95.3%) were positive with mean concentrations 41 ng.l-1. These concentrations are lower than the standads of Codex Alimentarius and FDA (500 ng.l-1), but 33 samples (22.1%) had higher concentrations than the maximum tolerance accepted by some European countries (50 ng.l-1). Mean concentrations of AFM1 in pasteurized and UHT milk were 39 and 46 ng.l-1, respectively. Mean concentrations of AFM1 in fall and winter samples were significantly higher (P<0.05) than those of summer but differences between AFM1 concentrations of fall and winter samples were not significantly different. No significant differences in Concentrations of AFM1 in milk samples between Shiraz, Khuzestan and Yazd. Considering the results, this survey revealed a high frequency of AFM1 contamination in milk samples from central part of Iran.

Keywords

References

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History

  • Receive Date: 28 September 2011
  • Revise Date: 18 April 2021
  • Accept Date: 29 October 2018

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