Source  FOOD CHEMISTRY

Published  APR 30 2025

DOI: 10.1016/j.foodchem.2025.142903

IF  9.8

Abstract  TNanopesticides exhibit different residue patterns in crops after application compared toconventional formulations, thus affecting human dietary exposure. Residue, dissipation, and dietary exposure to tebuconazole nanoformulations (nanoemulsion and nano-capsules) andconventional formulations(suspension concentrate and micro-capsules) on wheat were investigated and compared. Nano-capsules (1950 mu g/kg) and micro-capsules (1771 mu g/kg) had significantly lower initial deposition on wheat-leaf than suspension concentrate (2666 mu g/kg). No significant differences were observed in initial deposition on wheat-stem and wheat-grain between nano andconventional formulations. The degradation half-lives of suspension concentrate, nanoemulsion, nano-capsules, and micro-capsules were 1.5-11.4 d, 7.6-25.7 d, 4.1-12.4 d, and 7.5-22.4 d, respectively. Nanoemulsion, with the lowest surface tension, was highly stable and persistent, resulting in the highest final residues on wheat-leaf (695 mu g/kg). Risk quotients for all formulations were about 28 %, indicating acceptable dietary risks. These findings offer valuable insights into the application of nanopesticides and contribute to mitigating the associated health risks.