Distributions and congener group profiles of short-chain and medium-chain chlorinated paraffins in cooking oils in Chinese markets

Journal of Agricultural and Food Chemistry
Wei GaoGuibin Jiang

Abstract

Chlorinated paraffins (CPs) are organic pollutants that have caused widespread concerns in recent years. Due to their lipophilic characteristics, CPs may enter into the body through diet or other routes and exert adverse effects on human health. In this study, we investigated the occurrence and congener profiles of SCCPs (short-chain chlorinated paraffins) and MCCPs (medium-chain chlorinated paraffins) in 176 cooking oils and 19 oil containers collected from various markets in China. The concentrations of SCCPs and MCCPs in cooking oils were in a range of not detected (ND) to 16055 ng/g and ND to 11612 ng/g, respectively, and the geomean concentrations of MCCPs were higher lower than those of SCCPs. Concentrations of CPs in sesame oil, rapeseed oil and camellia oil were higher than those in other types of oils, and different oil processing methods had different effects on the presence of CPs in the oils. CPs were detected in 5 out of 20 oil containers although their concentrations were much lower than those detected in the oil samples, indicating containers are not the main source of CPs detected in the oils. The mean SCCPs and MCCPs intakes through cooking oils of the general Chinese population were 8.83 and 6.09 μg/kg/d, resp...Continue Reading

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