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Advisor(s)
Abstract(s)
The Quinone outside Inhibitors (QoI) are one of the most important and recent fungicide groups used in viticulture and also
allowed by Integrated Pest Management. Azoxystrobin, kresoxim-methyl and trifloxystrobin are the main active ingredients
for treating downy and powdery mildews that can be present in grapes and wines. In this paper, a method is reported for the
analysis of these three QoI-fungicides in grapes and wine. After liquid–liquid extraction and a clean-up on commercial silica
cartridges, analysis was by isocratic HPLC with diode array detection (DAD) with a run time of 13 min. Confirmation was by
solid-phase micro-extraction (SPME), followed by GC/MS determination. The main validation parameters for the three
compounds in grapes and wine were a limit of detection up to 0.073mg kg-1, a precision not exceeding 10.0% and an
average recovery of 93% ±38.
Description
Keywords
QoI-fungicides Grapes Wines Method validation HPLC GC/MS
Citation
Publisher
Taylor & Francis