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

被引：76

作者：

Xing, Guan Hua ^{[1
,2
]}

Yang, Yu ^{[3
]}

Chan, Janet Kit Yan ^{[1
,2
]}

Tao, Shu ^{[3
]}

Wong, Ming Hung ^{[1
,2
]}

机构：

[1] Hong Kong Baptist Univ, Croucher Inst Environm Sci, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Baptist Univ, Dept Biol, Kowloon, Hong Kong, Peoples R China

[3] Peking Univ, Lab Earth Surface Proc, Coll Environm Sci, Beijing 100871, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 156卷 / 03期

关键词：

Bioaccessibility; PCBs; Food; In vitro method; Exposure;

D O I：

10.1016/j.envpol.2008.03.020

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. (C) 2008 Elsevier Ltd. All rights reserved

引用

页码：1218 / 1226

页数：9

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