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Extraction of Pesticides from Spices Utilizing a Rapid and Automated Alternative to QuEChERS

May 27, 2019
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The QuEChERS method has been shown to be practical for pesticide clean up and extraction on a number of different sample types and is increasingly being used on more difficult matrices. Unfortunately, this process is a manual, multi-step process that can be time consuming and yield variable results. With so many different types of food matrices and pesticide residues to be analyzed, there is a need for a faster, simpler extraction method. Furthermore, some matrices, either by their nature or their economic value, can be difficult to extract with just the QuEChERS method alone. Spices are among these difficult matrices, due to the dehydrated state in which they are received. The EDGE® provides a valuable alternative to the QuEChERS method for the extraction of pesticides from spices. With its patent pending Q-Cup Technology™, the EDGE can extract pesticide residues from spices in less than 7 min, in one automated step.



In recent years, consumers have had a growing concern for additives and contaminants in their foods. Of most concern are those additives, such as pesticides, that can cause long term hazardous health effects. Consumer demand, coupled with an ever increasing list of regulated pesticides, has created a need for rapid and accurate pesticide analysis. The QuEChERS method has been a widely accepted method to meet some of these challenges; however, due to the large number of pesticides being monitored and the decreases of the MRL (maximum residue limits), sample preparation and analysis can be a big challenge. The manual, multi-step process of the QuEChERS method requires multiple sample transfers and generates a lot of consumable waste. Alternative methods can help streamline this workflow, giving improved recoveries for difficult matrices, such as spices, with faster and simpler methods. The EDGE automated Extraction System performs extraction and clean-up, when necessary, in a single automated step. The collected extract is automatically filtered, cooled, and ready for analysis. Included in the run time is both the rinsing of the sample and washing of the system, ensuring no carryover. EDGE offers the fastest automated pesticide extraction possible in one simple method.