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为快速准确测定食用油中抗氧化剂含量，通过QuEChERS-超高效液相色谱法建立同时测定食用油中丁基羟基茴香醚（BHA）、特丁基对苯二酚(TBHQ)、二丁基羟基甲苯(BHT)、没食子酸丙酯(PG)、没食子酸辛酯（OG）5种常见抗氧化剂含量的方法。样品先采用甲醇溶解提取，提取液经冷冻离心、净化剂净化分离后上机检测，超高效液相色谱仪以乙腈-水为流动相进行梯度洗脱，采用外标法定量。结果表明：5种抗氧化剂在1.0~100.0 mg/L范围内线性关系良好，检出限均不大于1.6 mg/kg，加标回收率在85.78%~100.85%之间，RSD在2.40%~6.01%之间。综上，该方法具有操作简单、重现性好、灵敏度高等特点，适合动植物油中5种常用抗氧化剂含量的检测与分析。 In order to quickly and accurately determine the antioxidants in edible oil, a method for simultaneous determination of butylhydroanisole(BHA), tertiary butylhydroquinone (TBHQ), dibutylhydrotoluene (BHT), propyl gallate (PG) and octyl gallate (OG) in edible oil was established by QuEChERS-ultra high performance liquid chromatography.The sample was dissolved and extracted with methanol, and the extract was tested on the machine after freezing centrifugation and purification and separation with detergent. The ultra high performance liquid chromatography used acetonitrile-water as the mobile phase for gradient elution, and the external standard method was used for quantification. The results showed that the linear relationship of the five antioxidants was good in the range of 1.0-100.0 mg/L, the detection limits were not more than 1.6 mg/kg, the spiked recovery rate was 85.78%-100.85%, and the RSD was 2.40%-6.01%. In conclusion, this method has the characteristics of simple operation, good reproducibility and high sensitivity, and is suitable for the detection and analysis of common antioxidants in animal and vegetable oils.

为了解梧州市居民通过小作坊土榨花生油摄入黄曲霉毒素B1（AFB1）的膳食暴露风险，随机抽取梧州市3区、4县小作坊生产散装土榨花生油共496份,检测其AFB1含量，应用点评估方法评估梧州市居民的土榨花生油AFB1膳食暴露风险。结果表明：496份土榨花生油中，AFB1检出率为40.3%，含量在0.12~109.00 μg/kg之间，平均含量为3.63 μg/kg，超标率为4.64%，居民平均AFB1膳食暴露量为1.67 ng/(kg·d)，平均暴露限值(MOE)为240；男性居民平均AFB1膳食暴露量低于女性居民，城市居民低于农村居民，AFB1对女性居民造成的风险高于男性居民，对农村居民造成的风险高于城市居民。风险评估结果表明，梧州市居民通过土榨花生油摄入AFB1潜在风险较高。 In order to understand the dietary exposure risk of aflatoxin B1 (AFB1)of Wuzhou residents through native pressed peanut oil from small workshops,a total of 496 batches of native pressed peanut oils in three districts and four counties of Wuzhou city were randomly selected and tested the AFB1 content, and the point assessment method was applied to assess the dietary exposure risk of Wuzhou residents to AFB1 in native pressed peanut oil. The results showed that the detection rate of AFB1 in 496 batches of native pressed peanut oil was 40.3%, and the content ranged from 0.12 μg/kg to 109.00 μg/kg, with an average content of 3.63 μg/kg and an exceedance rate of 4.64%, and the average dietary exposure of AFB1 was 1.67 ng/(kg·d), with a mean margin of exposure(MOE) of 240. The average dietary exposure of AFB1 was found to be lower among male residents than female residents, and lower among urban residents than rural residents, while the risk of AFB1 was found to be higher among female residents than male residents, and higher among rural residents than urban residents. The risk assessment results indicate that the potential risk of AFB1 intake by Wuzhou residents through native pressed peanut oil is high.

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Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)