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Mortality biomarkers: Peptides and proteins

Date: Mar 15, 2018

Author: Steve Down

A large-scale proteomics study on older men has identified a number of peptides and proteins that are associated with five-year mortality, most of them arising from non-cancer deaths and implicating a number of biological pathways, especially inflammation.

Read More thumbnail image: Mortality biomarkers Peptides and proteins

GC has met the teddy bear threat

Date: Mar 15, 2018

Author: Ryan De Vooght-Johnson

Perfume compounds are often added to soft toys by their manufacturers, but this practice may expose children to potential allergens. Scientists from the Chinese Academy of Inspection and Quarantine in Beijing devised a new method using headspace analysis and GC-MS to detect 58 possible allergens in soft toy fibres.

Read More thumbnail image: GC has met the teddy bear threat

Sagacious examination helps sage identification

Date: Mar 15, 2018

Author: Ryan De Vooght-Johnson

The roots of the medicinal plant Salvia miltiorrhiza or danshen are widely used in traditional Chinese medicine (TCM), but are sometimes fraudulently substituted by other Salvia (sage) species. Researchers from the Shenzhen Institute for Drug Control and the University of Macao (both China) developed a method to distinguish Salvia miltiorrhiza from two related species using HPLC and chemometric methods.

Read More thumbnail image: Sagacious examination helps sage identification

Heavy atoms show the way for dsRNA assay

Date: Mar 15, 2018

Author: Ryan De Vooght-Johnson

Double-stranded RNA (dsRNA) has several potential uses, but production methods tend to give mixtures with other types of RNA, rendering assays difficult. Researchers from Sheffield University and Syngenta’s Jealott’s Hill site (Berkshire) used isotopically labelled dsRNA in conjunction with LC-MS to determine the amount of dsRNA in RNA mixtures from modified E. coli.

Read More thumbnail image: Heavy atoms show the way for dsRNA assay

Journal Highlight: Determining degree of roasting in cocoa beans by artificial neural network (ANN) based electronic nose system and gas chromatography/mass spectrometry (GC/MS)

Date: Mar 12, 2018

Author: separationsNOW

An electronic nose system based on an array of gas sensors and GC/MS were both used in conjunction with artificial neural networks to predict the degree of roasting of cocoa beans with equal success.

Read More thumbnail image: Journal Highlight Determining degree of roasting in cocoa beans by artificial neural network ANN based electronic nose system and gas chromatographymass spectrometry GCMS

The joy of SAXS: When combined with ion-exchange chromatography

Date: Mar 12, 2018

Author: Jon Evans

By taking advantage of a micro-ionization chamber, a Japanese scientist has been able to combine small-angle X-ray scattering with ion-exchange chromatography to produce a new method for characterizing proteins.

Read More thumbnail image: The joy of SAXS When combined with ion-exchange chromatography

Journal Highlight: Protein analysis of the spermatophore reveals diverse compositions in both the ampulla and the spermatophylax in a bushcricket

Date: Mar 12, 2018

Author: separationsNOW

German scientists used two-dimensional gel electrophoresis and nano-liquid chromatography-electrospray ionization mass spectrometry to analyze the protein composition of nuptial gifts given by male bushcrickets to prospective mates.

Read More thumbnail image: Journal Highlight Protein analysis of the spermatophore reveals diverse compositions in both the ampulla and the spermatophylax in a bushcricket

Journal Highlight: CE-XRF–initial steps toward a non-invasive elemental sensitive detector for liquid separations

Date: Mar 12, 2018

Author: separationsNOW

Chemists in the US have developed an elemental specific detector based on X-ray fluorescence spectrometry for use with capillary electrophoresis.

Read More thumbnail image: Journal Highlight CE-XRFinitial steps toward a non-invasive elemental sensitive detector for liquid separations

Journal Highlight: Supramolecular solvent-based vortex-mixed microextraction: Determination of chiral triazole fungicide in beer samples

Date: Mar 12, 2018

Author: separationsNOW

Chinese scientists used a supramolecular solvent for the simultaneous microextraction of the chiral fungicides triadimefon and triadimenol from beer samples, prior to analysis by chiral liquid chromatography-mass spectrometry.

Read More thumbnail image: Journal Highlight Supramolecular solvent-based vortex-mixed microextraction Determination of chiral triazole fungicide in beer samples

Journal Highlight: Glycosyltransferase cascades made fit for chemical production: Integrated biocatalytic process for the natural polyphenol C-glucoside nothofagin

Date: Mar 5, 2018

Author: separationsNOW

Austrian scientists used anion-exchange chromatography to capture and purify a glycosylated biomolecule produced by a novel glycosyltransferase reaction cascade.

Read More thumbnail image: Journal Highlight Glycosyltransferase cascades made fit for chemical production Integrated biocatalytic process for the natural polyphenol C-glucoside nothofagin
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