Organo-chlorine pesticide residues in infant formulas

Izquierdo, P.; Allara, M.; Torres, G.; Garcia, A.; Pinero, M.

Revista Cientifica-Facultad de Ciencias Veterinarias 14(2): 147-152


ISSN/ISBN: 0798-2259
Accession: 070573234

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Consumption of animal and vegetable fat is a source of exposition to organochlorine pesticides (POC) for man. Infant formulas are made from powder milk, vegetable oil, or combinations of both, and for this reason POC could be present in this food. The objective of this study was to determine POC levels in infant formulas sold in Maracaibo, Venezuela. Twenty (20) samples of four commercial milk brands were analyzed, 5 for each brand. Two brands (A and 13) were from Venezuela and the others (C and D) were imported. All were analyzed by Gas Chromatography according to AOAC 1997 protocol. The POC residue most frequently detected was endrin (55%), while clordano had a lower frequency (7,5%). In brands A, B and D endrin had the greatest concentration, followed by DDT; while in brand C, DDT had the greatest concentration followed by endrin. No significant differences were found in POC concentrations between commercial brands. All brands exceeded maximum residue FAO/WHO residue limits except for DDT and BHC in Venezuelan formulas, while imported formula levels exceeded the norms for lindane, dieldrin, heptachlor and endrin. Concentrations of endrin, heptachlor and aldrin in imported infant formula, were higher than the values reported in 1979 in the country. Considering the high frequency of POC detected in infant formulas, it is recommended to make studies in order to determine the overall situation in Venezuela in relation to POC residues in food.