What does this research mean for the field?

A modified two-step QuEChERS sample preparation method coupled with GC-MS/MS achieves accurate (70-120% recovery) and precise (8.1-18.1%) quantification of pesticide residues in chilli oleoresin. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study aims to assess a modified quick sample preparation method for accurately quantifying pesticide residues in chilli oleoresin.

June 6, 2026

Evaluation of quick sample preparation technique for pesticides residue quantification in chilli oleoresin matrix by gas chromatography tandem mass spectrometry (GC-MS/MS)

Key Points

This study aims to assess a modified quick sample preparation method for accurately quantifying pesticide residues in chilli oleoresin.
Evaluated a two-step modified QuEChERS method for sample preparation.
Extracted target analytes from 0.5 g of homogenized chilli oleoresin using acetonitrile and water.
Validated the method according to SANTE guidelines using GC-MS/MS.
Recoveries of pesticide residues ranged from 70% to 120%.
Precision of the method ranged from 8.1% to 18.1%.
Seventeen different pesticides, including planar types, were effectively quantified.

Abstract

Two steps modified QuEChERS sample preparation method applicability was evaluated for pesticides quantification in chilli oleoresin. Seventeen representative pesticides in each class including planar pesticides were chosen for this study. The optimized method was validated in accordance with SANTE guidelines. Optimized sample preparation involved extraction of target analytes from 0.5 g homogenized sample by acetonitrilewater and dispersive cleanup. The residues were estimated using gas chromatography tandem mass spectrometer GC-MS/MS by electron impact ionization and MRM mode. The recoveries by the optimized method varied between 70-120% and precision 8.1-18.1%.

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