Resumen de Study of polycyclic aromatic hydrocarbons generated from fatty acids by a model system
Wen Nie, Kezhou Cai, Yuzhu Li, Zehui Tu, Bing Hu, Cunliu Zhou, Conggui Chen, Shaotong Jiang
The characteristics of carcinogenic polycyclic aromatic hydrocarbons (PAHs) produced from various fatty acids, as important components of fats and oils, at high temperature are still little known. The reason is because the existing data are from experiments conducted in complex food systems. In this study, 12 PAHs produced from nine fatty acids, representing saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs), were investigated in a model system heated at 98, 165 and 240?°C. RESULTS SFAs can with difficulty be pyrolyzed to generate PAHs at 98?°C, but small amounts of PAHs were determined in MUFAs (44.97?µg kg?1) and PUFAs (177.73?µg kg?1). When the temperature reached 165?°C, there were totals of 27.59, 142.8 and 449.68?µg kg?1 PAHs assayed in SFAs, MUFAs and PUFAs, respectively. The amounts of PAHs generated from SFAs, MUFAs and PUFAs at 240?°C were higher when compared with those of the 165?°C group (P?
