Polycyclic aromatic hydrocarbons in Brazilian commercial soybean oils and dietary exposure.
In this study the 13 polycyclic aromatic hydrocarbons (PAHs) identified as being genotoxic and carcinogenic by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) were determined in different brands of soybean oils available on the Brazilian market, totalling 42 samples. A solid-phase extraction (SPE) method for sample clean-up with a C18 cartridge, followed by reversed-phase HPLC with fluorescence detection, was used for determination. The method showed good recoveries for most PAHs studied with values between 74% and 111%. Good intra- and inter-day precisions (0.5 < RSD < 11.9) and high correlation coefficients (r(2)> 0.999) were obtained. The presence of PAHs was detected in all 42 samples with mean summed PAH levels ranging from 10.4 to 112.0 µg kg(-1). The mean and maximum dietary exposures for total PAHs were estimated as 12.4 and 19.1 ng kg bw(-1) day(-1), respectively.
a Food Science and Quality Center, Institute of Food Technology - ITAL , Av. Brasil, 2880 , 13070-178 - Campinas-SP , Brazil.
M C
MC
Rojo Camargo
P R
PR
Antoniolli
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E
Vicente
S A V
SA
Tfouni
D001938:Brazil; D002851:Chromatography, High Pressure Liquid; D004032:Diet; D004781:Environmental Exposure; D005506:Food Contamination / Q000032:analysis*; D057230:Limit of Detection; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013024:Soybean Oil / Q000737:chemistry*
D011084:Polycyclic Aromatic Hydrocarbons; D013024:Soybean Oil
PAH; oils and fats; process contaminants – PAHs; processed foods