Fecha de publicación: -- Fuente: PubMed "olive oil" Food Chem. 2026 Nov 7;533(Pt 1):151988. doi: 10.1016/j.foodchem.2026.151988. Online ahead of print.ABSTRACTEffective and innovative air-assisted dispersive liquid-liquid microextraction technique based on a hydrophobic deep eutectic solvent (DES) was developed for the extraction and preconcentration of three pesticides (Hexythiazox (HEX), Buprofezin (BUP), and Oxyfluorfen (OXY)) prior to their determination by HPLC-UV. The DES was prepared by mixing oleic acid, extracted from olive oil, and ammonium acetate, and then characterized by different techniques including FT - IR, SEM, GC/MS, 1H NMR, and elemental mapping. Under optimum conditions, the method exhibited good linearity with correlation coefficients within the range of 0.9814-0.9942, high repeatability, and intermediate precision (day-to-day), and excellent selectivity. The method demonstrated high sensitivity, with low limits of detection of 0.04 μg L-1 for OXY, 0.02 μg L-1 for HEX, and 0.06 μg L-1 for BUP, whereas the corresponding limits of quantification were 0.1, 0.05, and 0.2 μg L-1, respectively. The proposed technique was utilized to extract and detect HEX, BUP, and OXY in real samples.PMID:43003030 | DOI:10.1016/j.foodchem.2026.151988