Presence of mycotoxins in Tunisian infant foods samples and subsequent risk assessment

Abstract

A study on a set of cereal and cereal-based products (n = 117) intended for infant consumption was performed to determine the natural presence of twenty different mycotoxins by both liquid chromatography and gas chromatography coupled to tandem mass spectrometry (MS/MS). Analytical data showed that 67% of analyzed samples were contaminated by at least one mycotoxin at variable levels. Deoxynivalenol presented the highest incidence (38%) and reached a maximum level of 240 ng/g in a bsissa sample (oat product), higher than the maximum level set for DON in cereal products (200 ng/g). While, enniatin B was found in 25 samples with a maximum level of 316 ng/g found also in a bsissa sample. Furthermore, 32% of positive samples showed co-occurrence of at least two mycotoxins, and a combination of up to six different mycotoxins was found within the positive samples. It was also observed that only the intake of bsissa and sorghum samples may pose a real OTA and HT-2 toxin health risk to the high consumers. Overall, no toxicological concern was associated to mycotoxins exposure for infant population; but a special attention should be paid to samples with co-occurring mycotoxins, where the estimated daily intake increase considerably for high consumers.