Center for Duck Health Science, Faculty of Veterinary Medicine, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140, Thailand.
Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
Biol Trace Elem Res. 2018 Aug;184(2):501-507. doi: 10.1007/s12011-017-1202-0. Epub 2017 Nov 18.
Two hundred duck egg samples were collected from 20 farms in Central and Western Thailand. The levels of Zn, Co, Mn, Fe, and Cr in yolks were found significantly higher than in albumen, whereas the levels of Cd and Cu contaminations in egg albumen were significantly higher than in yolks. The mean level of Pb contamination in whole eggs was 4.06 ± 2.70 mg kg dry weight. This level was higher than the Thai agricultural standard no. 6703-2005 for duck eggs set at 0.1 ppm for the magnitude of 40.6 times. In addition, 98% (196/200) of duck egg samples had Pb levels higher than the standard limit. However, the calculation of daily intakes of Pb, Cd, and Cu contamination in the current study of duck eggs shows that these metals were lower than the World Health Organization and the Food and Agriculture Organization provisional tolerated daily intake. These levels may, however, present a health risk resulting from a long-term exposure. It can be concluded that consumers may be at risk of Pb, Cd, and Cu contamination if they consume contaminated duck eggs. In addition, long-term monitoring of the health risks of heavy metals contamination should be conducted concerning the duck egg production system in Thailand.
从泰国中部和西部地区的 20 个农场采集了 200 个鸭蛋样本。蛋黄中的 Zn、Co、Mn、Fe 和 Cr 水平明显高于蛋清，而蛋清中的 Cd 和 Cu 污染水平明显高于蛋黄。整个鸡蛋中 Pb 的平均污染水平为 4.06 ± 2.70 mg/kg 干重。这一水平高于泰国农业标准 No. 6703-2005 中规定的鸭蛋标准，该标准设定为 0.1 ppm，超标 40.6 倍。此外，98%（196/200）的鸭蛋样本 Pb 含量高于标准限量。然而，根据本研究中鸭蛋中 Pb、Cd 和 Cu 污染的日摄入量计算，这些金属低于世界卫生组织和粮农组织暂定可耐受日摄入量。然而，这些水平可能会因长期接触而对健康构成风险。因此可以得出结论，如果消费者食用受污染的鸭蛋，可能会面临 Pb、Cd 和 Cu 污染的风险。此外，应长期监测泰国鸭蛋生产系统中重金属污染的健康风险。
