Natural contaminants in infant food: The case of regulated and emerging mycotoxins
2021
Braun, Dominik | Eiser, Maximilian | Puntscher, Hannes | Marko, Doris | Warth, Benedikt
Breast milk substitutes, e.g. infant formulae, are commonly introduced to the diet within the first months of life. As the infants’ detoxifying capability is not fully developed, it is of vital importance to minimize their exposure to food contaminants. Here, we present a comprehensive multi-mycotoxin assessment in infant food. Samples from the Austrian and Czech market (n = 59) were screened for 46 mycotoxins and key metabolites using two complementary LC-MS/MS methods. Trace levels of 17 mycotoxins, including aflatoxin B₁ (0.4 μg/kg), zearalenone (<2.3 μg/kg), deoxynivalenol (<131 μg/kg) and fumonisin B₁ (<39 μg/kg) were detected. Infant formulae were contaminated at lower levels compared to cereal-based products. Overall, the concentrations of most toxins were near or below their respective LOQ values. However, two raw flour samples exceeded the regulatory limit of aflatoxin B₁ for infant foods. Interestingly, two toxins not reported previously, namely aflatoxicol and sterigmatocystin, were identified in 3 and 17% of infant foods, respectively.
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