Endocrine-disrupting pesticides in infant formulas marketed in Brazil: Interference-free GC-MS analysis and early-life dietary exposure assessment.

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ID: 282941
2025
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Abstract
Endocrine-disrupting compounds (EDCs) include ubiquitous and persistent environmental contaminants that interfere with the endocrine system's functions. Many of these compounds are used as acaricides, fungicides, herbicides, and insecticides in agricultural fields worldwide. Considering the serious implications of exposure to EDCs in the first months of life and the few works on pesticide residues in infant formulas, the present research focused exclusively on endocrine-disrupting pesticides in infant formulas intended for babies below 1 year old available in the Brazilian market. An accurate, sensitive, and selective gas chromatography-mass spectrometry (GC-MS) method was successfully validated, and then, applied to infant formula samples. The limits of detection and quantification were low enough to meet the maximum residue level (MRL) of 10.0 μg/kg established for infant formula. Recoveries varied from 86.3 to 119.8 % and precision values, under repeatability and within-laboratory reproducibility, were ≤ 19.7 %. Another unique feature of the study was the detection and strategies to remove a potential matrix-interfering compound, which shared the same ions monitored for malathion in GC-MS analysis, thus preventing false positives. Among the 60 infant formula samples analysed, dimethoate, an organophosphate insecticide, was detected in five samples, with one soy-based infant formula exceeding the MRL. Based on a deterministic approach, the estimated daily intakes were within the acceptable daily intake (ADI) values and below the acute reference dose (ARfD), indicating no major health concerns.
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petrarca2025endocrinedisrupting Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Petrarca, Mateus Henrique; Tfouni, Silvia Amelia Verdiani
Journal food research international (ottawa, ont)
Year 2025
DOI
10.1016/j.foodres.2025.116172
URL
Keywords
estimated daily intake dimethoate pesticide residues food contaminants gc–ms method validation infant foods risk characterisation

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