Bioaccessibility of polychlorinated biphenyls in different foods using an in vitro digestion method

Guan Hua XING, Yu YANG, Janet Kit Yan CHAN, Shu TAO, Ming Hung WONG

Research output: Contribution to journalArticles

53 Citations (Scopus)

Abstract

Bioaccessibility of organic pollutants in food is important for exposure estimation and risk assessment. An in vitro enzyme digestion experiment was carried out to analyze the bioaccessibility of PCBs in different foods including freshwater fish (bighead carp and oriental weather fish) and vegetables (spinach and cabbage). The results indicated that the bioaccessibility of PCBs in freshwater fish (3%) was much lower than that in leafy vegetables (25%). Based on field survey, the daily exposure TEQ value from these two types of food was 17.9 pg/kg bw/day. However, when bioaccessibility was taken into consideration, the value decreased to 0.61 pg/kg bw/day. Therefore, the forms of PCBs existing in food strongly influenced the bioavailability for humans, which may have important implications on dietary exposure. To our knowledge, this is the first paper to illustrate the bioaccessibility of PCBs in different foods using an in vitro digestion method. Copyright © 2008 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1218-1226
JournalEnvironmental Pollution
Volume156
Issue number3
DOIs
Publication statusPublished - 01 Dec 2008

Citation

Xing, G. H., Yang, Y., Chan, J. K. Y., Tao, S., & Wong, M. H. (2008). Bioaccessibility of polychlorinated biphenyls in different foods using an in vitro digestion method. Environmental Pollution, 156(3), 1218-1226. doi: 10.1016/j.envpol.2008.03.020

Keywords

  • Bioaccessibility
  • PCBs
  • Food
  • In vitro method
  • Exposure

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