Accumulation and elimination of polychlorinated dibenzo-p-dioxins and dibenzofurans in mule ducks

Ting Wei Wu, Jai Wei Lee, Hsueh Yen Liu, Wei Hsiao Lin, Chun Yen Chu, Sheng Lun Lin, Guo Ping Chang-Chien, Chi Yu

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

In Taiwan, a food safety crisis involving a presence of high concentrations of dioxin residues in duck eggs occurred in 2004. The dioxin content in duck meat sampled from supermarkets was also reported to be substantially higher than in products from other farm animals. Despite increased awareness of the potential for contamination and exposure to dioxins, the accumulation and elimination of dioxins in ducks have not been well characterized. In the present study, mule ducks were fed capsules containing polychlorinated dibenzo-. p-dioxins and dibenzofurans (PCDD/Fs) for 14. days and the trial was continued for another 28. days without PCDD/Fs supplementation. Ducks were sacrificed on the 14th, 28th, and 42nd days from the beginning of administration and samples of abdominal fat, breast, and liver tissue were obtained.The concentrations of PCDD/Fs were analyzed in the samples to investigate their distribution and elimination in various duck tissues. The bioaccumulation of PCDD/Fs in ducks was found to be tissue-dependent. In the abdominal fat, the bioconcentration factor was negatively correlated with the degree of chlorination. Conversely, more chlorinated PCDD/Fs (hexa- or hepta-congeners) were associated with higher bioconcentration in the liver and breast tissue. In terms of the efficiency of PCDD/Fs elimination, the liver was found to be the fastest, followed by the breast and the abdominal fat. The clearance rate positively correlated with the degree of chlorination, as determined by comparing the apparent elimination rate constant (k) of PCDD/Fs in various tissues. Overall, lower k values observed in this study imply that mule ducks have a reduced clearance of PCDD/Fs in comparison with layer and broiler chickens.

原文English
頁(從 - 到)260-266
頁數7
期刊Science of the Total Environment
497-498
DOIs
出版狀態Published - 2014 11月 1

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 環境化學
  • 廢物管理和處置
  • 污染

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