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- W3097591808 abstract "Recently, mycotoxins safety in Chinese post-fermented teas has attracted much attention because it is still controversial whether environmental fungi in the teas are able to produce aflatoxins. In this study, a rapid and selective analytical method based on immunoaffinity column (IAC) cleaning coupled with liquid chromatography-mass spectrometry (LC-MS) was developed to quantify four aflatoxins (B1, B2, G1 and G2) in post-fermented teas. Recoveries ranged from 80.8 to 92.2% with relative standard deviation less than 3%. The limits of detection and quantification were 0.109–0.348 μg kg−1 and 0.364–1.159 μg kg−1, respectively. Two out of 158 samples were positive for aflatoxins examination (occurrence rate 1.27%). The deterministic assessment for the maximal aflatoxins exposure under upper bound was 9.19 × 10−6 μg kg−1 day−1 from heavy exposure consumers (≥50 year age group), but the exposure was lower than the JECFA acceptable value of 1.0 ng kg−1 day−1 on liver risk. Probabilistic assessment showed that the upper bound 95th percentile carcinogenic risk value for the 318 consumers (Yunnan China and Ulan Bator Mongolia) was 1.75 × 10−7, and for heavy exposure consumers was 2.4 × 10−7, and the values equally below the acceptable carcinogenic risk level." @default.
- W3097591808 created "2020-11-09" @default.
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- W3097591808 date "2020-12-01" @default.
- W3097591808 modified "2023-10-17" @default.
- W3097591808 title "Quantitative analysis and dietary risk assessment of aflatoxins in Chinese post-fermented dark tea" @default.
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- W3097591808 doi "https://doi.org/10.1016/j.fct.2020.111830" @default.
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