Investigating Plastic Contamination in Olive Oil with GC–MS/MS
January 17th 2025The objective of this study was to investigate contamination by 32 plasticizers in olive oil throughout its production and packaging process. Separation and detection were carried out by gas chromatography tandem mass spectrometry (GC–MS/MS), without the need for pre-concentration steps.
Measuring Lavender Essential Oil’s Effect on Cancerous Tumors with GC-MS
January 15th 2025A recent study aimed to investigate the impact of lavender essential oil (LEO) and of its terpenic components on the properties of glioblastoma (GBM) cells in an in vitro model. The study demonstrated that LEO induces a proliferation slowdown and an impairment of cell migration of GBM cells besides reducing oxidative stress.
Investigating Phenolic Content in Walnut Milk Residue with UHPLC–ESI-MS/MS
January 13th 2025New research characterizes walnut milk residue according to its phenolic content and antioxidant and cytotoxic potential using ultrahigh-performance liquid chromatography–electrospray tandem mass spectrometry (UHPLC–ESI-MS/MS).
Metabolomics Analysis of Low Birth-Weight Infants Using UHPLC-MS/MS Following Lipid Emulsion
January 10th 2025A recent study aimed to directly compare the changes in serum metabolites among very low birth-rate (VLBW) infants following the administration of the soybean oil-based lipid emulsion and soybean oil, medium-chain triglycerides, olive oil, and fish oil (SMOF) lipid emulsion using untargeted metabolomics techniques.
UHPLC–MS/MS Identifies Serum Biomarkers for Diagnosing Cystic Echinococcosis in Sheep
January 8th 2025Differences in serum metabolites of sheep infected with Echinococcus granulosus were analyzed using ultrahigh-performance liquid chromatography (UHPLC) separation with tandem mass spectrometry (MS/MS) detection, providing a basis for the early diagnosis and pathogenetic study of cystic echinococcosis (CE) in intermediate hosts at the metabolomics level.
Presenting GC Data Comparisons to Laypersons to Understand Potential Courtroom Implications
January 6th 2025In forensic science, scientific testimony is routinely presented in court to juries who may have limited or no scientific background, putting law enforcement and defense personnel in the position of having to make rapid decisions in short timeframes based on findings of which they are not specialists. Katelynn Perrault Uptmor, Assistant Professor of Chemistry at William & Mary (Williamsburg, Virginia) believes that the introduction of new technologies into the framework of routine forensic analysis must therefore bridge the gap between introduction of new and novel analytical science and the communication of that science to a court of law, and that analytical chemistry research must be mindful of the need to fill this gap in promoting new technologies.
Discovering Biomarkers in Coronary Heart Disease Comorbidities with GC–MS
January 3rd 2025Researchers employed a gas chromatography-mass spectrometry (GC–MS)-based metabolomic approach combined with sophisticated statistical methods to identify metabolic biomarkers in coronary heart disease (CHD), hypertension-comorbid CHD, depression-comorbid CHD, and type 2 diabetes mellitus (T2DM)-comorbid CHD to provide an objective diagnostic method and help identify metabolomic signatures to better identify risk groups early, as well as improve understanding of pathophysiologic pathways.
Using LC-MS/MS to Measure Testosterone in Dried Blood Spots
December 19th 2024Testosterone measurements are typically performed using serum or plasma, but this presents several logistical challenges, especially for sample collection, storage, and transport. In a recently published article, Yehudah Gruenstein of the University of Miami explored key insights gained from dried blood spot assay validation for testosterone measurement.
LC-MS/MS Analysis Offers Insights into Intestinal Microbiota and Metabolites in Camels
December 18th 2024A recent study examines the specific traits of the intestinal microbiota and metabolites in Bactrian camels. The results of profiling 36 intestinal mucosal samples from six Bactrian camels using liquid chromatography with tandem mass spectrometry (LC-MS/MS) provides valuable data for understanding the relationship between regional intestinal immunity and the general health and disease of the host.
GC-MS to Measure the Effect of Sustainable Fertilizer on Essential Oil Generation in Spearmint
December 17th 2024A recent study used gas chromatography-mass spectrometry (GC-MS) to evaluate the potential of the foliar application of C. vulgaris extract to improve crop yield, chemical composition, and antioxidant and antibacterial activities of the essential oil of spearmint.
Investigating Changes in Flavonoid Metabolite Profiles in Coconut Water with LC-MS/MS
December 16th 2024Research conducted by the Chinese Academy of Tropical Agricultural Sciences (Wenchang, China) investigated the changes in flavonoid metabolite profiles in coconut water from two varieties, Wenye No.5 (W5) and Hainan local coconut (CK), across six developmental stages, utilizing liquid chromatography-tandem mass spectrometry (LC–MS/MS) in their work. Their findings have repercussions in yielding coconut-based products offering superior nutritional and functional properties.
Analyzing Polyphenols and Antioxidants in Dark Chocolate with RP-HPLC
December 16th 2024To determine sample patterns and identify possible markers of quality, variety, or origin to deal with authentication or fraud detection issues, researchers from the University of Barcelona’s Department of Chemical Engineering and Analytical Chemistry characterized dark chocolate samples according to geographical origin, cocoa variety, and cocoa content. Filtered extracts were analyzed by reversed-phase high performance liquid chromatography (RP-HPLC) with ultraviolet (UV) and spectrophotometric methods to establish individual phenolics and overall indexes of antioxidant and flavonoid content.
Measuring Tooth Discoloration from Coffee with HPLC
December 11th 2024Researchers measured bovine tooth enamel samples with colorimetry, high-performance liquid chromatography (HPLC), and ultraviolet-visible (UV-Vis) spectrophotometry to develop a comprehensive understanding of coffee-induced tooth discoloration by examining the individual and combined effects of CGA and pigments and determining how their concentrations are affected by coffee roast level.
ID-LC–MS/MS Used to Determine Associations Between PUFA and Estradiol Levels
December 10th 2024A recent study investigating the association between dietary polyunsaturated fatty acid (PUFA) intake and estradiol levels in women in the United States utilized isotope dilution liquid chromatography–tandem mass spectrometry to measure serum estradiol levels.
SPME GC-MS–Based Metabolomics to Determine Metabolite Profiles of Coffee
December 10th 2024Using a solid phase microextraction gas chromatography-mass spectrometry (SPME GC-MS)-based metabolomics approach, a recent study by the School of Life Sciences and Technology at Institut Teknologi Bandung (Indonesia) investigated the impact of environmental factors (including temperature, rainfall, and altitude) on volatile metabolite profiles of Robusta green coffee beans from West Java.
Identifying Antioxidative Properties in Berries with UHPLC-MS
Published: November 27th 2024 | Updated: November 27th 2024A recent study identified and quantified anthocyanin (which are known for their antioxidative properties and potential effectiveness against depression) in blueberries, blackberries, black mulberries, and cranberries using ultra high-pressure liquid chromatography (UHPLC) followed by in vivo evaluation of their antidepressant-like activities.
Measuring Stress and Reproductive Hormones in Dolphins with UHPLC
November 25th 2024A recent study measured stress and reproductive hormones in three stocks of free-ranging bottlenose dolphins inhabiting different natural salinities across the Gulf of Mexico, with hormones extracted from the blubber of 82 remotely biopsied dolphins and quantified using ultrahigh-pressure liquid chromatography (UHPLC) coupled with orbital ion trap fusion mass spectrometry.
LC-HRMS Technology Used to Track Chemical Migration in Reusable Plastic Bottles
Published: November 18th 2024 | Updated: November 19th 2024Aiming to develop a comprehensive strategy for evaluating the chemical migration from various reusable plastic bottles, researchers from the University of Copenhagen utilized vacuum evaporation concentration (VEC) enrichment combined with liquid chromatography (LC) high resolution mass spectrometry (HRMS) analysis to investigate a wide range of materials from different manufacturers to identify those with higher and lower chemical migration rates.