Chromatography Sample Prep

Introduction Lipid oxidation is a major concern in food science because it degrades nutritional quality, alters flavor, and generates potentially toxic compounds. Monitoring oxidation products is essential for ensuring shelf stability and consumer safety. Solid-phase extraction (SPE) has become a cornerstone technique for isolating these analytes from complex food matrices prior to chromatographic analysis. This […]

Why Polyphenols Matter in Fruit Juice Analysis Polyphenols are a diverse group of naturally occurring compounds found in fruits, vegetables, and beverages like fruit juices. They include flavonoids, phenolic acids, stilbenes, and lignans, and are widely recognized for their antioxidant, anti-inflammatory, and cardioprotective properties. For juice manufacturers and food scientists, quantifying polyphenol content is essential

Introduction Artificial sweeteners are widely used in the beverage industry to provide sweetness without the caloric load of sugar. Common sweeteners such as acesulfame-K (ACE), aspartame (ASP), saccharin (SAC), sucralose (SUC), and cyclamate (CYC) require robust analytical methods for accurate quantification. Solid-phase extraction (SPE) is a critical cleanup step to remove matrix interferences from sugars,

Why Caffeine Testing Matters in Beverages Caffeine is one of the most widely consumed psychoactive substances globally, found in coffee, tea, energy drinks, and soft drinks. Accurate quantification is critical for regulatory compliance, nutritional labeling, and quality control. Overconsumption can lead to health issues such as insomnia, palpitations, and anxiety, while under-reporting can mislead consumers.

Overview of GC-MS in Environmental Pollutant Analysis Gas chromatography-mass spectrometry (GC-MS) is a cornerstone technique for detecting and quantifying organic pollutants in environmental matrices. Its high sensitivity, selectivity, and ability to separate complex mixtures make it ideal for analyzing trace-level contaminants in soil, water, and air. Common target analytes include polycyclic aromatic hydrocarbons (PAHs), polychlorinated

The Critical Role of Sample Cleanup in Chromatography Analysis In analytical chemistry, sample preparation is often the most critical yet overlooked step in achieving reliable chromatography results. As Dr. Xu, product manager at Poseidon Scientific, I’ve witnessed firsthand how proper sample cleanup strategies can make or break analytical outcomes. The fundamental truth is this: no

Overview of Automated SPE Systems Automated Solid Phase Extraction (SPE) systems represent a significant advancement in modern laboratory workflows, transforming what was once a labor-intensive manual process into a streamlined, high-efficiency operation. As laboratories face increasing sample volumes and regulatory pressures, automated SPE workstations have become essential tools for maintaining analytical quality while improving throughput.

What Are Matrix Effects? Matrix effects represent one of the most significant challenges in modern analytical chemistry, particularly in LC-MS workflows. These effects occur when co-extracted components from the sample matrix interfere with the ionization process of target analytes in the mass spectrometer. As noted in the literature, “An undesirable feature of atmospheric pressure ionization-MS