A study presents a rapid, sensitive method for detecting 51 pesticide residues in rice, leeks, and tea using GC-MS/MS analysis.

Objective To establish a method for rapid detection of 51 different pesticide residues in rice, leeks, and tea using QuEChERS method and gas chromatography-tandem mass spectrometry (GC-MS/MS). Methods: Acetonitrile was used to extract samples, and dispersive solid-phase extraction was used to purify the samples. GC-MS/MS detection was performed using multiple reaction monitoring (MRM), and the ion transition with the highest sensitivity was used for quantitation. Results: 51 pesticides showed a good linear relationship in the range of 20~1500 ng/mL, the correlation coefficient (r2) was greater than 0.99, and the detection limit (S/N¡Ý3) of each pesticide was 0.0005~0.02 mg/kg, except for dimethyl In addition to the recovery rate of amidine between 14.61% and 35.56%, the recovery rate of other pesticide residues at three concentration addition levels ranged from 51.5% to 129%, and the relative standard deviation (RSD, n=6) range was 0.79%~15.23%. Conclusion This method is highly sensitive, accurate, fast and simple, and is suitable for the rapid determination and verification of 51 pesticide residues in rice, leeks, and tea.

In recent years, the importance of ensuring food safety and reducing exposure to pesticide residues in agricultural products has become a focal point for consumers, regulators, and the agricultural industry alike. With the aim of advancing the detection and analysis of pesticide residues in common food items, a novel methodology has been established for the rapid identification of 51 different pesticide residues in rice, leeks, and tea. This approach leverages the Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method coupled with Gas Chromatography-Tandem Mass Spectrometry (GC-MS/MS), marking a significant advancement in the field of food safety analysis.

Objective

The primary objective of this study was to develop a robust, efficient, and highly sensitive method for the detection of a broad spectrum of pesticide residues across three commonly consumed foods: rice, leeks, and tea. The method aimed to offer rapid detection capabilities to facilitate faster decision-making processes in food safety management and regulatory compliance.

Methods

The approach utilized the QuEChERS method for sample preparation, a popular technique known for its simplicity and effectiveness in extracting pesticides from complex food matrices. Acetonitrile was employed as the solvent for extracting the pesticides from the samples. Following extraction, dispersive solid-phase extraction (d-SPE) was employed to purify the samples, a critical step in reducing potential matrix interferences during analysis.

For the detection and quantification of pesticide residues, GC-MS/MS was chosen for its high sensitivity and specificity. The method employed Multiple Reaction Monitoring (MRM) mode, utilizing the ion transition with the highest sensitivity for each pesticide to ensure accurate quantitation.

Results

The results of this study were highly promising, demonstrating excellent analytical performance across the board. The 51 pesticides under investigation exhibited good linear relationships within the concentration range of 20 to 1500 ng/mL, with correlation coefficients (r^2) exceeding 0.99. The detection limits for the pesticides ranged from 0.0005 to 0.02 mg/kg, showcasing the method’s high sensitivity. Except for dimethoate, which showed a lower recovery rate between 14.61% and 35.56%, the recovery rates for the remaining pesticides at three spiked concentration levels varied from 51.5% to 129%. The relative standard deviation (RSD) values, which indicate precision, ranged from 0.79% to 15.23% across six replicates, further underscoring the method’s reliability.

Conclusion

This study successfully establishes a highly sensitive, accurate, fast, and simple method for the detection and quantification of 51 pesticide residues in rice, leeks, and tea. The combination of QuEChERS sample preparation and GC-MS/MS analysis provides a powerful tool for the rapid determination and verification of pesticide residues in these foods. This method holds significant promise for enhancing food safety measures, offering a valuable resource for laboratories engaged in food analysis and safety assessment. Its adoption can significantly contribute to the global efforts in monitoring and controlling pesticide residues in the food supply, ultimately protecting public health and ensuring consumer trust in food products.

For futher details of this article and research, feel free to contact our team for assistance.

About ETprotein:

ETprotein, a reputable plant protein vegan protein Chinese factory manufacturer and supplier, is renowned for producing, stocking, exporting, and delivering the highest quality organic bulk vegan protein and plant proteins. They include Organic rice protein, clear rice protein, pea protein, clear pea protein, oat protein, watermelon seed protein, pumpkin seed protein, sunflower seed protein, mung bean protein, peanut protein, various of plant peptides etc. Their offerings, characterized by a neutral taste, non-GMO, allergen-free attributes, cater to a diverse range of industries. They serve nutraceutical, pharmaceutical, cosmeceutical, veterinary, as well as food and beverage finished product distributors, traders, and manufacturers across Europe, USA, Canada, Australia, Thailand, Japan, Korea, Brazil, and Chile, among others.

ETprotein specialization includes exporting and delivering tailor-made protein powder and finished nutritional supplements. Their extensive product range covers sectors like Food and Beverage, Sports Nutrition, Weight Management, Dietary Supplements, Health and Wellness Products, and Infant Formula, ensuring comprehensive solutions to meet all your protein needs.

As a trusted company by leading global food and beverage brands and Fortune 500 companies, ETprotein reinforces China’s reputation in the global arena. For more information or to get a free sample of their protein products, please contact them and email sales(at)ETprotein.com today.