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Evaluation of mycotoxins and their estimated daily intake in popcorn and cornflakes using LC-MS techniques

Author:
Andrade, G.C.R.M., Pimpinato, R.F., Francisco, J.G., Monteiro, S.H., Calori-Domingues, M.A., Tornisielo, V.L.
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2018 v.95 pp. 240-246
ISSN:
0023-6438
Subject:
T-2 toxin, aflatoxin B1, average daily intake, dietary exposure, electrospray ionization mass spectrometry, fumonisins, liquid chromatography, monitoring, neosolaniol, popcorn, tandem mass spectrometry
Abstract:
The occurrence of 11 mycotoxins in samples of popcorn and cornflakes was evaluated by liquid chromatography electrospray ionization tandem mass spectrometry (LC-MS/MS), using dynamic multiple reaction monitoring. This quick, easy, cheap, effective, rugged and safe (QuEChERS) method was modified and provided good analytical results (recoveries ranged from 79 to 119%, RSDs <21% and LOQs below the established maximum level). Popcorn samples were contaminated with fumonisins, aflatoxin B1, neosolaniol and T-2 toxin, with mean concentrations of 592, 10.2 and 10.2 μg kg−1, respectively, while cornflake samples were contaminated with only T-2 (mean 11.2 μg kg−1). The co-occurrence of fumonisin B1+ aflatoxin B1 was observed in 52% of popcorn samples and was not observed in cornflake samples. The estimated intake for the Brazilian population of total fumonisins and T-2 toxin for popcorn as the upper bound approach were 0.0051 and 0.00004 μg kg −1 bw day −1, respectively, and for the 99th percentile were 0.1943 and 0.0014 μg kg −1 bw day −1, respectively, suggesting a low risk of ingestion. However heavy consumers may be exposed to a potential risk due to fumonisins (upper bound of 4.6 μg kg−1 bw day−1).
Agid:
6328191