Polychlorinated dioxins, furans (PCDD/Fs), dioxin-like polychlorinated biphenyls (dl-PCBs) and indicator PCBs (ind-PCBs) in egg and egg products in Turkey

Abstract

The aim of the study is to determine concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), dioxin-like polychlorinated biphenyls (dl-PCBs) and indicator PCBs (ind-PCBs) in eggs from cage hens without soil contact, pasteurized egg samples and imported egg yolk powder samples in Turkey. Concentrations of PCDD/Fs, PCDD/Fs and dl-PCBs, and ind-PCBs in eggs and pasteurized egg samples are in the range of 0.247–1.527pgWHO-TEQ(2005)g−1 fat, 0.282–1.762pg WHO-TEQ(2005)g−1 fat and 202–1235pgg−1 fat, respectively. For egg yolk powder samples, concentrations of PCDD/Fs, PCDD/Fs and dl-PCBs, and ind-PCBs are in the range of 0.122–0.494pg WHO-TEQ(2005)g−1 fat, 0.214–0.640pg WHO-TEQ(2005)g−1 fat and 217–1498pgg−1 fat, respectively. All results for PCDD/Fs, PCDD/Fs and dl-PCBs, and ind-PCBs are below the values of 2.5pg WHO-TEQ(2005)g−1 fat, 5.0pg WHO-TEQ(2005)g−1 fat and 40ngg−1 fat imposed in Turkish Regulation for eggs and egg products, respectively. In all samples 2,3,4,7,8-PeCDF, 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD and PCB126 are the most prominent congeners. Mean estimated daily exposure to PCDD/Fs and dl-PCBs for Turkish population from egg is 0.011pg WHO-TEQ(2005)d−1kgbody weight (bw)−1. Although the exposure levels are below the TDI of 2pgWHO-TEQ(1998)kgbw−1, the results were based only on consumption of egg. In order to estimate total dietary intake for Turkish population, various food items should be investigated.