SPME-GC-MS Analysis of Virgin Olive Oils
Researchers from the University of Barcelona (Barcelona, Spain) and Arboriculura Mediterranea Mas de Bover (Tarragona, Spain) implemented a factorial experimental design in developing a solid-phase microextraction (SPME)?gas chromatography (GC)?mass spectrometry (MS) method to analyze volatile phenols in virgin olive oils.
Researchers from the University of Barcelona (Barcelona, Spain) and Arboriculura Mediterranea Mas de Bover (Tarragona, Spain) implemented a factorial experimental design in developing a solid-phase microextraction (SPME)–gas chromatography (GC)–mass spectrometry (MS) method to analyze volatile phenols in virgin olive oils. They analyzed a total of nine volatile phenols, which are strong odorants produced by microbial activity. They calculated odor activity values for the phenols to facilitate a first assessment of the compounds’ importance in the aroma of the oil samples.
Analytical Challenges in Measuring Migration from Food Contact Materials
November 2nd 2015Food contact materials contain low molecular weight additives and processing aids which can migrate into foods leading to trace levels of contamination. Food safety is ensured through regulations, comprising compositional controls and migration limits, which present a significant analytical challenge to the food industry to ensure compliance and demonstrate due diligence. Of the various analytical approaches, LC-MS/MS has proved to be an essential tool in monitoring migration of target compounds into foods, and more sophisticated approaches such as LC-high resolution MS (Orbitrap) are being increasingly used for untargeted analysis to monitor non-intentionally added substances. This podcast will provide an overview to this area, illustrated with various applications showing current approaches being employed.
Multi-Step Preparative LC–MS Workflow for Peptide Purification
March 21st 2025This article introduces a multi-step preparative purification workflow for synthetic peptides using liquid chromatography–mass spectrometry (LC–MS). The process involves optimizing separation conditions, scaling-up, fractionating, and confirming purity and recovery, using a single LC–MS system. High purity and recovery rates for synthetic peptides such as parathormone (PTH) are achieved. The method allows efficient purification and accurate confirmation of peptide synthesis and is suitable for handling complex preparative purification tasks.
