Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 188, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1007/s10661-016-5150-5
Keywords
Onions; Mycotoxins; Occupational exposure; Risk assessment
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Manual sorting of onions is known to be associated with a bioaerosol exposure. The study aimed to gain an initial indication as to what extent manual sorting of onions is also associated with mycotoxin exposure. Twelve representative samples of outer onion skins from different onion origins were sampled and analyzed with a multimycotoxin method comprising 40 mycotoxins using a single extraction step followed by liquid chromatography with electrospray ionization and triple quadrupole mass spectrometry. Six of the 12 samples were positive for mycotoxins. In those samples, deoxynivalenol, fumonisin B-1, and B-2 were observed in quantitatively detectable amounts of 3940 ng/g for fumonisin B1 and in the range of 126-587 ng/g for deoxynivalenol and 55-554 ng/g for fumonisin B-2. Although the results point to a lower risk due to mycotoxins, the risk should not be completely neglected and has to be considered in the risk assessment.
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