A preliminary study of PCBs, PAHs, pesticides and trace metals contamination in cold-pressed rapeseed oils from conventional and ecological cultivations

作者：Wroniak Malgorzata; Rekas Agnieszka^*

来源：Journal of Food Science and Technology-Mysore, 2017, 54(5): 1350-1356.

DOI：10.1007/s13197-017-2575-y

• Ecological farming
• Heavy metals
• PAH
• PCB
• Pesticides

The purpose of this study was to investigate the levels of polycyclic aromatic hydrocarbons [benzo(a) anthracene, chrysene, benzo(b) fluoranthene, and benzo(a)pyrene], polychlorinated biphenyls (6 marker and 12 dioxin-like), pesticides (74 compounds) and heavy metals (Pb, Cd, As, Hg, Fe, Cu), in the cold-pressed rapeseed oils from conventional (RC) and ecological cultivations (RE). Similar level of PAHs, PCBs and heavy metals was found in the investigated cold-pressed oils; moreover, no effect of rapeseeds cultivation practice on the level of pesticide residues was found. Levels of PAHs, PCBs, and pesticides were within EU legislation limits. Concentration of 4 PAHs oscillated between 3.13 and 6.15 mu g/kg, concentration of non-dioxin-like PCBs was within 2599.4-8380.8 pg/g range, dioxin-like PCSs levels varied from 310.2 to 819.4 pg/g (0.307-0.780 pg TEQ/g oil). Iron (Fe) and copper (Cu) were prevailing heavy metals found in the studied oils (0.236-1.690 mg/kg range, 0.036-0.062 mg/kg range, respectively). Measured lead (Pb) contents reached (RC1) or were nearly equal to the EU limit of 0.1 mg/kg (RE1 and RE2).

• 出版日期2017-4