Determination of difenoconazole residue in tomato during home canning by UPLC-MS/MS

► We used UPLC-ESI-MS/MS to determine difenoconazole residue. ► Systematic study was made on changes of difenoconazole during tomato processing. ► Peeling remove most of difenoconazole residue, with the PF of tomato skin at > 5.