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| Contamination characteristics of benzo（a）pyrene in edible vegetable oil and dietary exposure assessment for urban and rural residents: A case study of Hanzhong city |
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| DOI： |
| KeyWord:benzo（a）pyrene edible vegetable oil contamination characteristics margin of exposure increased lifetime cancer risk |
| FundProject:陕西省重点研发计划项目(2022SF-244，2020ZDLNY06-07)；陕西省食品药品检验研究院青苗基金项目(SQM202108) |
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| Abstract: |
| To explore the health risk of benzo（a）pyrene exposure in edible vegetable oil to urban and rural residents, commercial edible vegetable oil in Hanzhong city, Shaanxi Province was sampled, and the content of benzo（a）pyrene was determined by HPLC-fluorescence detection method, and the pollution characteristics of benzo（a）pyrene in edible vegetable oil were investigated combined with a questionnaire survey of residents in various districts and counties. The margin of benzo（a）pyrene exposure through edible vegetable oil was calculated, and the increased lifetime cancer risk(ILCR) caused by benzo（a）pyrene exposure to different population types was quantitatively evaluated. The results showed that the detection rate of benzo（a）pyrene in commercial edible vegetable oil samples was 62.5%, and the average content of benzo（a）pyrene was 1.0 μg/kg. There was no significant difference in the content of benzo（a）pyrene between rapeseed oil and other vegetable oil (p>0.05). There was a significant correlation between benzo（a）pyrene content and acid value (p<0.05), but no significant correlation between benzo（a）pyrene content and peroxide value (p>0.05). The average intake of edible vegetable oil of residents in Hanzhong city was 35.17 g/d, and 96.2% of residents mainly consumed rapeseed oil. The chronic daily intakes of benzo（a）pyrene through edible vegetable oil of male and female residents in Hanzhong city were 0.52 ng/(kg·d) and 0.59 ng/(kg·d), respectively. The margin of exposure to benzo（a）pyrene in edible vegetable oil of residents in various districts and counties of Hanzhong city was greater than 10 000, indicating that the health risk of residents ingestion of benzo（a）pyrene through edible vegetable oil was low in Hanzhong city. The ILCR of male and female residents was within 8.95×10-7-1.53×10-5 and 1.01×10-6-1.74×10-5, respectively, and 99.6% of male residents and 100% of female residents in Hanzhong city had slightly higher ILCR than acceptable risk levels (1.0×10-6). The ILCR of residents in other districts and counties were significantly higher than those of residents in Hantai district (p<0.05). To sum up, residents of districts and counties in Hanzhong city have low health risk of benzo（a）pyrene intake through edible vegetable oil, but there is a certain cancer risk involved. Reducing the consumption of vegetable oil can assist in mitigating the associated risks. |
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