CO-OCCURRENCE OF MYCOTOXINS IN FOOD PRODUCTS CONSUMED BY LACTATING WOMEN FROM PIRASSUNUNGA/SP

vol. 4, 2019 - 112671
Pôster
Favorite this paper
How to cite this paper?
Abstract

Mycotoxins are secondary metabolites produced by fungi that can develop naturally in food, leading to toxic effects in humans and several animal species. Lactating women require especial attention as a risk group because, when they ingest food containing mycotoxins, their original or metabolized forms can be transferred into the breast milk. This study evaluated the co-occurrence of aflatoxins (AFB1, AFB2, AFG1, AFG2), fumonisins (FB1, FB2), ochratoxins A (OTA), zearalenone (ZEN), deoxynivalenol (DON), HT-2 and T-2 toxins in food products consumed by 23 lactating mothers registered in a public medical center from Pirassununga/SP. The lactating women provided samples from foods available at their homes between April-May/2018, totaling 59 samples. The mycotoxins were determined in food samples by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The aflatoxins were detected in 28% of all samples analyzed, at mean concentrations varying from 9.2 to 62.7 μg/kg. ZEN was detected in 13 samples (22%) of rice, beans, wheat, corn meal, pasta, bread, cake and crackers, with levels higher than the maximum tolerable limit (MTL) in Brazil in rice, cake and bread (mean levels: 767.1 to 973.9 μg/kg). Fumonisins also presented concentrations above the MTL in 6 samples (10%) of corn meal, hominy and corn flakes, at mean concentrations ranging from 1306.0 to 23132.9 μg/kg. OTA was detected in pasta and bread (n=2) at mean levels of 478.5 and 203.7 μg/kg, respectively. Fifteen samples (25%) contained 2 or more types of mycotoxins. DON, T-2 and HT-2 toxins were not detected in any sample. The results indicate a potential high exposure of lactating women to multiple mycotoxins in the diet, especially to aflatoxins, ZEN and fumonisins since several samples (57%) had levels above their respective MTLs. The co-occurrence of mycotoxins in foods consumed by lactating women warrants concern about the possible transference of residual mycotoxins into the breast milk.

Institutions
  • 1 Faculdade de Zootecnia e Engenharia de Alimentos (FZEA/USP)
  • 2 Universidade de São Paulo
Track
  • 4. Alimentação e saúde (AS)
Keywords
MYCOTOXINS
Exposure
LC-MS/MS analysis