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Journal Highlight: Monolithic column functionalized with quinine derivative for anion‐exchange capillary electrochromatography

Date: Sep 5, 2018

Author: separationsNOW

Chinese scientists have developed a novel anion‐exchange organic polymer monolithic column based on the monomers N‐benzylquininium chloride and acrylamide for performing capillary electrochromatography.

Read More thumbnail image: Journal Highlight Monolithic column functionalized with quinine derivative for anionexchange capillary electrochromatography

Journal Highlight: HPLC associated with resonance Rayleigh scattering for synchronous determination of three antihistamines and mechanism study

Date: Sep 5, 2018

Author: separationsNOW

Chinese scientists have combined resonance Rayleigh scattering with high performance liquid chromatography to produce a novel method for detecting antihistamine drugs in water samples.

Read More thumbnail image: Journal Highlight HPLC associated with resonance Rayleigh scattering for synchronous determination of three antihistamines and mechanism study

Fast GC runs are fine to measure volatiles in wine

Date: Sep 4, 2018

Author: Ryan De Vooght-Johnson

The flavour of wine and related products largely depends on the volatile compounds present, but existing methods for their analysis tend to be lengthy. Scientists from the Edmund Mach Foundation (near Trento, Italy) developed a new, fast GC method for analysing wine volatiles, applying it to white wine, grape must, wine spirits and balsamic vinegar.

Read More thumbnail image: Fast GC runs are fine to measure volatiles in wine

Journal Highlight: A perspective view of top‐down proteomics in snake venom research

Date: Sep 3, 2018

Author: separationsNOW

The advantages of intact protein measurements with top‐down mass spectrometric strategies compared with bottom-up procedures for identifying snake venom proteoforms and localizing their modifications and sequence variations have been discussed.

Read More thumbnail image: Journal Highlight A perspective view of topdown proteomics in snake venom research

Music therapy: Proteome implications

Date: Sep 1, 2018

Author: Steve Down

A proteomics study of the effects of musical stimulation on spatial learning and memory in rats has implicated a pair of proteins that could provide a basis for studying clinical applications of music therapy in humans.

Read More thumbnail image: Music therapy Proteome implications

Medicinal mixture made manageable by multiple product ion filtering

Date: Aug 31, 2018

Author: Ryan De Vooght-Johnson

Kai-xin-san is a traditional Chinese medicine (TCM) composed of four herbs and containing a very complex mixture of compounds. Researchers from Shenyang Pharmaceutical University, China, used LC-MS in combination with multiple product ion filtering (mPIF) to identify herbal constituents and metabolites in the plasma and brain tissue of rats that had been fed with the medication.

Read More thumbnail image: Medicinal mixture made manageable by multiple product ion filtering

Paracetamol pulverises proteins via para-benzoquinone metabolite

Date: Aug 30, 2018

Author: Ryan De Vooght-Johnson

Paracetamol overdose can cause severe liver damage due to the binding of the reactive metabolite NAPQI to liver proteins. Scientists from two Canadian institutions, the University of Quebec at Montreal and the University of Alberta (Edmonton), used LC-MS/MS to quantify the adduct formed from NAPQI and human serum albumen (HSA), this being a useful biomarker for the amount of NAPQI bound to liver proteins.

Read More thumbnail image: Paracetamol pulverises proteins via para-benzoquinone metabolite

Journal Highlight: Use of semi‐automated continuous SPE and GC-MS for the determination of polycyclic aromatic hydrocarbons in alcoholic and non‐alcoholic drinks from Andalucia (Spain)

Date: Aug 27, 2018

Author: separationsNOW

Spanish scientists have developed a method for detecting and quantifying polycyclic aromatic hydrocarbons in drinks such as beer and wine based on semi‐automated solid‐phase extraction followed by gas chromatography–mass spectrometry.

Read More thumbnail image: Journal Highlight Use of semiautomated continuous SPE and GC-MS for the determination of polycyclic aromatic hydrocarbons in alcoholic and nonalcoholic drinks from Andalucia Spain

Journal Highlight: Accessory gland proteins of males in the male‐diphenic ant Cardiocondyla obscurior

Date: Aug 27, 2018

Author: separationsNOW

Scientists from Germany and Brazil used two‐dimensional gel electrophoresis and mass spectrometry to analyze proteins in the seminal fluid and male accessory glands of both winged and wingless males of the ant species Cardiocondyla obscurior.

Read More thumbnail image: Journal Highlight Accessory gland proteins of males in the malediphenic ant Cardiocondyla obscurior

Journal Highlight: Use of an amino acid ionic liquid as an ion exchange chromatography mobile phase modifier for the analysis of magnesium, calcium, zinc, and iron ions

Date: Aug 27, 2018

Author: separationsNOW

Chinese scientists tested the effect of adding an amino acid ionic liquid to a nitric acid-based mobile phase on the retention time, peak height and resolution of metal cations separated by ion-exchange chromatography.

Read More thumbnail image: Journal Highlight Use of an amino acid ionic liquid as an ion exchange chromatography mobile phase modifier for the analysis of magnesium calcium zinc and iron ions
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