Dissipation behavior and dietary risk assessment of pyridaben in open field strawberries and cucumber under Egyptian cultivation conditions
2021
Malhat, Farag | Saber, El-Sayed | Anagnostopoulos, Chris | Shokr, Shokr Abdelsalam
Pyridaben, an inhibitor of mitochondrial electron transport at complex I, is authorized in Egypt as an insecticide/acaricide for strawberries and cucumbers; thus the investigation of residues in the final consumed product is essential as to ensure consumer safety and trade barriers. Therefore, residue trials were conducted according to the in force and more critical Good Agricultural Practices (GAPs) as to investigate the dissipation rate of the compound on both crops and the terminal residues in the final products. Results showed that the residue decline fits a first-order decay process with calculated half-lives of 1 and 6.4 days for cucumbers and strawberries, respectively. Dietary risk assessment was performed based on the risk quotients (RQ) method and the EFSA PRIMo model demonstrating that the dietary exposure to pyridaben residues from cucumber and strawberry consumption, applied either according to the in force or more critical GAPs, does not pose unacceptable health risk to Egyptian and European consumers.
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