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Journal Highlight: Preparation of magnetic microsphere-gold nanoparticle-immobilized enzyme batch reactor and its application to enzyme inhibitor screening in natural extracts by CE

Date: Jul 24, 2017

Author: separationsNOW

By immobilizing enzymes on magnetic microspheres and gold nanoparticles in a reactor, Chinese scientists have developed a novel capillary electrophoresis method for screening the enzyme inhibitors from natural products.

Read More thumbnail image: Journal Highlight Preparation of magnetic microsphere-gold nanoparticle-immobilized enzyme batch reactor and its application to enzyme inhibitor screening in natural extracts by CE

Journal Highlight: Purification and functional characterization of lectin with phenoloxidase activity from the hemolymph of cockroach

Date: Jul 24, 2017

Author: separationsNOW

Indian zoologists have used ion-exchange chromatography to purify lectins extracted from cockroaches, in order to discover more about their molecular properties and function.

Read More thumbnail image: Journal Highlight Purification and functional characterization of lectin with phenoloxidase activity from the hemolymph of cockroach

Journal Highlight: Comparative proteome analysis of egg yolk plasma proteins during storage

Date: Jul 24, 2017

Author: separationsNOW

Chinese scientists have used two-dimensional gel electrophoresis to expore how storage time alters the plasma proteins in egg yolk.

Read More thumbnail image: Journal Highlight Comparative proteome analysis of egg yolk plasma proteins during storage

Frozen droplets rise to challenge: Of detecting Viagra in dietary supplements

Date: Jul 17, 2017

Author: Jon Evans

By combining solid-phase extraction with dispersive liquid-liquid microextraction, Korean scientists have developed the most sensitive, rapid and efficient liquid chromatography-UV detection method for identifying Viagra in dietary supplements.

Read More thumbnail image: Frozen droplets rise to challenge Of detecting Viagra in dietary supplements

Journal Highlight: Employing two-stage derivatisation and GC–MS to assay for cathine and related stimulant alkaloids across the Celastraceae

Date: Jul 17, 2017

Author: separationsNOW

A GC/MS analysis of cathine and related stimulants in 43 Celastraceae species has shown that cathine is unique to Catha edulis, and is not responsible for the stimulant properties reported in related Celastraceae species

Read More thumbnail image: Journal Highlight Employing two-stage derivatisation and GCMS to assay for cathine and related stimulant alkaloids across the Celastraceae

Driven round the bend: Detecting proteins with a hollow nanomechanical resonator after CE

Date: Jul 17, 2017

Author: Jon Evans

Scientists in Korea and Canada have detected proteins separated by capillary electrophoresis based on the way they alter the vibrations of a tiny hollow tube as they travel through.

Read More thumbnail image: Driven round the bend Detecting proteins with a hollow nanomechanical resonator after CE

Histamine on the brain: An automated derivatization process for detecting histamine

Date: Jul 17, 2017

Author: Jon Evans

French scientists have developed an automated derivatization process that allows histamine and its main precursor and metabolite to be detected in brain samples by capillary electrophoresis and laser-induced fluorescence detection.

Read More thumbnail image: Histamine on the brain An automated derivatization process for detecting histamine

Extended beer proteome: Allergenic gluten proteins

Date: Jul 15, 2017

Author: Steve Down

The most extensive proteome of lager beer to date has been been derived by scientists in the Czech Republic who made a special effort to identify gluten proteins which might be allergenic.

Read More thumbnail image: Extended beer proteome Allergenic gluten proteins

Weighing up ways of working out log P

Date: Jul 15, 2017

Author: Ryan De Vooght-Johnson

Lipophilicity is a key parameter affecting the activity of potential drug molecules, but there are many methods to calculate it. Scientists from the University of Belgrade examined various techniques for calculating the lipophilicity of a number of benzothiepino[3,2-c]pyridine derivatives, which were potential antifungal drugs.

Read More thumbnail image: Weighing up ways of working out log P

LC-LTQ-Orbitrap sweetly detects antimicrobial residues in honey

Date: Jul 14, 2017

Author: Ryan De Vooght-Johnson

Various antimicrobial compounds can be used in beekeeping, but careful measurement of any residues of these agents in honey is necessary. Scientists from the Laboratory for the Analysis of Organic Compounds in Beirut and the French Agency for the Safety of Food, Environment and Occupational Health in Fougères (Brittany) described the upgrading of a validated LC-MS/MS method for residue determination to a new LC-Linear Ion Trap/Orbitrap method.

Read More thumbnail image: LC-LTQ-Orbitrap sweetly detects antimicrobial residues in honey
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