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| Risk assessment of aflatoxin B1 pollution status and dietary exposure in grain and oil food in Tai′an in 2021 |
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| KeyWord:Tai′an grain and oil product aflatoxin B1 pollution status risk assessment |
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| Abstract: |
| To reduce the dietary intake risk of aflatoxin B1 (AFB1) in Tai′an and provide a basis for guiding consumers to purchase safe food, a total of 553 samples of wheat flour, rice, processed cereals, corn flour, corn oil, peanut oil, and roasted nuts were randomly collected from various administrative areas of Tai′an in 2021, and the content of AFB1 was accurately detected by high performance liquid chromatography-post-column derivation method. The dietary exposure levels of AFB1 in different types, sources, regions and populations of grain and oil product were evaluated using the exposure limit method(MOE) and mathematical modeling method. The results showed that the total detection rate of AFB1 was 2.53%, the average content was 0.73 μg/kg, and the total unqualified rate was 0.72%. The detection rates of AFB1 in the peanut oil and the corn flour purchased by small workshops, small grocery stores, restaurants and small supermarkets in High-tech District, Xintai city and Ningyang county were higher. The exposure amount of AFB1 in grain and oil product in Tai′an was 3.90 ng/ (kg·d), the MOE was 103, and the risk of liver cancer caused by AFB1 was 0.084 2cases/(100 000 people-years). The dietary exposure risk of AFB1 in corn flour, wheat flour and peanut oil was high, and as well as the grain and oil product from the small workshops, small grocery stores, restaurants of High-tech district, Xintai city, Ningyang county. The dietary exposure risk of AFB1 in different populations had no obvious differences. In conclusion, the dietary exposure risk of AFB1 in grain and oil product in Tai′an is high, and still needs continuous attention and supervision by the relevant authorities. |
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