ORGANOPHOSPHORUS PESTICIDE RESIDUES IN GREEK VIRGIN OLIVE OIL: LEVELS, DIETARY INTAKE AND RISK ASSESSMENT

Charoula Tsoutsi (1) , Ioannis Konstantinou (2) , Dimitra Hela (3)

1 Department of Chemistry [Ioannina]
2 ENVIRONMENTAL AND NATURAL RESOURCES MANAGEMENT
3 School of Natural Resources and Enterprises Management

In this study, the occurrence of organophosphorus pesticides (OPs) and metabolite residues was investigated in 167 samples of Greek virgin olive oil during a two-year (2004–2005) sampling campaign. A total of 30.5% of samples contained detectable residues while only one sample contained dimethoate residues higher than the maximum residue limits. Among the seven detected OPs, fenthion and fenthion sulfoxide residues were detected in 10.8% and 14.4% of the samples respectively at 0.003 to 0.61 mg kg-1 followed by dimethoate that was detected in 10.2% of the samples, at 0.003 to 0.057 mg kg-1. The acute dietary risk assessment was evaluated by determining the National Estimated Short-Term Intake (NESTI) while for the chronic dietary risk assessment the National Theoretical Maximum Daily Intake (NTMDI) and National Estimated Daily Intake (NEDI) were calculated. The estimated intakes (NESTI and NEDI) of each pesticide were <7% and <0.86%, much lower than the corresponding acute reference doses (ARfDs) and acceptable daily intakes (ADIs), respectively. Furthermore, a cumulative risk assessment was performed using the Hazard Index (HI) and the Toxicity Equivalence Factor (TEF) approaches taking into account that OPs share the same toxicological mechanism. The determined HI and TEFs were found to represent only a small portion of the respective ADIs or ARfDs. These results indicate that neither acute nor chronic risk derives for the Greek population through olive oil consumption.

Mots clés: Life Sciences

Charoula Tsoutsi, Ioannis Konstantinou, Dimitra Hela. ORGANOPHOSPHORUS PESTICIDE RESIDUES IN GREEK VIRGIN OLIVE OIL: LEVELS, DIETARY INTAKE AND RISK ASSESSMENT. Food Additives and Contaminants, 2008, 25 (10), pp.1225-1236. ⟨10.1080/02652030802130025⟩. ⟨hal-00577398⟩