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Variability of pesticide residues in eggplant units collected from a field trial and marketplaces in Greece
Author(s) -
Prodhan Mohammad Dalower Hossain,
Papadakis EmmanouilNikolaos,
PapadopoulouMourkidou Euphemia
Publication year - 2018
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8716
Subject(s) - quechers , pesticide residue , pesticide , field trial , cypermethrin , residue (chemistry) , toxicology , deltamethrin , environmental science , biology , agronomy , biochemistry
BACKGROUND Variability of pesticide residues among food items is very important when assessing the risks and food safety for the consumers. Therefore, the present study was undertaken to estimate the unit‐to‐unit residue variability factors for eggplant. RESULTS In total, 120 samples from a trial field and 142 samples from different marketplaces in Thessaloniki, Greece, were collected to estimate the variability of pesticide residues in eggplant units. They were extracted by the QuEChERS method and the residues were determined by LC–MS/MS. For the field samples, the unit‐to‐unit variability factors (VFs) obtained for cypermethrin and deltamethrin residues were 2.54 and 2.51, respectively. The mean residue levels of both pesticides were higher in the composite samples than in the individual samples. The average VFs for the marketplace samples was 3.89. The eggplant units exposed to pesticides were higher in residues than the non‐exposed units. CONCLUSION The variability factors obtained in the marketplace samples were higher than those in the samples collected from the field trial. A default VF value of 3 for field trials is appropriate for use when assessing the acute dietary intake but a VF for the marketplace samples should be reconsidered with a larger data. © 2017 Society of Chemical Industry