A total of 76 samples of maize and its products were collected in 2022-2023 to estimate dietary exposure of fumonisins (FBs) in Dalian region, China. The identification of FBs was performed by ultrahigh performance liquid chromatography coupled with mass spectrometry (UPLC-MS/MS). The occurrences of FB, FB, FB, FB + FB + FB were 89.5%, 77.6%, 61.8%, and 61.8%, respectively, with mean concentrations ranging from 140 to 1332 μg/kg. No individual and cumulative health risks were found due to FBs dietary exposure, when considering the mean level. However, a deterministic analysis showed 95 and 99 exposures of FB + FB + FB for children and adolescents were estimated to be 2.18 to 3.46 μg kg bwday, exceeding the Provisional Maximum Tolerable Daily Intake (PMTDI) of 2 μg kg bwday. Probabilistic analysis showed the 99 exposures for all age groups were 2.06 to 3.08 μg kg bwday, exceeding the PMTDI. Establishment of MLs and systematic monitoring are needed to lower FBs dietary exposure and health risk in the Dalian region.
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