ArticleBiology2026
Bioaccessibility of Organochlorine Pesticides in Contaminated Soil: A Poultry-Informed In Vitro Gastrointestinal Model.
Article in Biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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7 authors.
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Abstract
Free-ranging poultry ingest 4-30 g of soil per day, making soil a significant route of organochlorine pesticide (OCP) exposure in agricultural areas with legacy contamination. However, total soil concentrations overestimate actual exposure. Only the bioaccessible fraction, mobilized within the gastrointestinal tract, governs transfer to eggs and meat. Static physiologically based extraction test (PBET) models consistently underestimate this fraction for hydrophobic compounds due to re-equilibration of desorbed contaminants onto the soil matrix. This study applied and evaluated a sink-modified static in vitro gastrointestinal model incorporating Tenax resin as a sorption sink to assess OCP bioaccessibility in spiked aged soil under simulated poultry digestive conditions. The aqueous phase-only fraction (gastric plus intestinal liquid) ranged from 0.004 to 17.1%, while the aqueous phase plus sorption sink (Tenax) fraction, measured from the same intestinal phase incubation, ranged from 24.0 to 52.7%, with the largest relative changes observed for HCH isomers (from near-undetectable levels without Tenax) and 2.7- to 4.3-fold increases for DDT-related compounds, a difference confirmed as statistically significant (paired
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