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Journal Highlight: A comparative analysis of human plasma and serum proteins by combining native PAGE, whole-gel slicing and quantitative LC-MS/MS: Utilizing native MS-electropherograms in proteomic analysis for discovering structure and interaction-correlated differences

Date: Oct 2, 2017

Author: separationsNOW

A new method combines native PAGE, whole-gel slicing and quantitative LC-MS/MS for the comparative analysis of proteins based not only on abundance, but also on their structures and interactions.

Read More thumbnail image: Journal Highlight A comparative analysis of human plasma and serum proteins by combining native PAGE whole-gel slicing and quantitative LC-MSMS Utilizing native MS-electropherograms in proteomic analysis for discovering structure and interaction-correlated differences

SCUBA diver proteome: Decompression stress vs. decompression sickness

Date: Oct 1, 2017

Author: Steve Down

In a follow-up study of the effects of decompression sickness on the proteome of rats, an international team of scientists has examined the effects of decompression stress on SCUBA divers in the absence of decompression sickness.

Read More thumbnail image: SCUBA diver proteome Decompression stress vs_ decompression sickness

Opioids assayed by GC after extraction by SPE

Date: Oct 1, 2017

Author: Ryan De Vooght-Johnson

Opioid pharmaceuticals can have serious side-effects, such as irregular heart rhythms, so it is necessary to be able to measure their concentrations in the blood. Scientists from the University of Buenos Aires used solid-phase extraction, together with GC-MS with selected ion monitoring (SIM), to measure the levels of three synthetic opioids and two of their metabolites.

Read More thumbnail image: Opioids assayed by GC after extraction by SPE

Contamination by quinolones cleverly caught by MLC

Date: Oct 1, 2017

Author: Ryan De Vooght-Johnson

Antibiotic residues in meat can be harmful to consumers and lead to increasing populations of antibiotic-resistant bacteria. Scientists from Jaume I University in Castelló, Spain, successfully developed a validated method using micellar liquid chromatography (MLC) to detect antibiotic residues in various types of meat.

Read More thumbnail image: Contamination by quinolones cleverly caught by MLC

Informatics securely separates snow lotus species

Date: Oct 1, 2017

Author: Ryan De Vooght-Johnson

The snow lotus is a plant used in traditional Chinese medicine, but there has long been confusion between the three different Saussurea species called by this name. Researchers from Hong Kong Baptist University, the Chinese University of Hong Kong and the Sichuan Academy of Chinese Medical Sciences used UHPLC-MS together with principal component analysis (PCA) and hierarchical cluster analysis (HCA) to distinguish between the three species on the basis of their typical chemical composition.

Read More thumbnail image: Informatics securely separates snow lotus species

Journal Highlight: Quantification of near-attomole gibberellins in floral organs dissected from a single Arabidopsis thaliana flower

Date: Sep 25, 2017

Author: separationsNOW

A sensitive UHPLC-LC/MS/MS method with derivatisation has been developed to quantify gibberellins in the floral organs (pistil, stamens, petals, sepals and receptacle) dissected from a single Arabidopsis thaliana flower.

Read More thumbnail image: Journal Highlight Quantification of near-attomole gibberellins in floral organs dissected from a single Arabidopsis thaliana flower

Journal Highlight: Simultaneous quantitation of meperidine, normeperidine, tramadol, propoxyphene and norpropoxyphene in human plasma using SPE and GC/MS

Date: Sep 25, 2017

Author: separationsNOW

Researchers in Argentina have developed a novel solid-phase extraction method for extracting several opioid pain-relief drugs from blood plasma prior to analysis by gas chromatography-mass spectrometry.

Read More thumbnail image: Journal Highlight Simultaneous quantitation of meperidine normeperidine tramadol propoxyphene and norpropoxyphene in human plasma using SPE and GCMS

Journal Highlight: Hydrophilic interaction anion exchange for separation of multiply modified neutral and anionic Dictyostelium N-glycans

Date: Sep 25, 2017

Author: separationsNOW

Austrian chemists used hydrophilic interaction anion exchange chromatography to analyse the N-glycans produced by the cellular slime mould Dictyostelium discoideum.

Read More thumbnail image: Journal Highlight Hydrophilic interaction anion exchange for separation of multiply modified neutral and anionic Dictyostelium N-glycans

Journal Highlight: Maillard reaction in natural rubber latex: Improvement of concentration process

Date: Sep 25, 2017

Author: separationsNOW

Researchers in Thailand used gel electrophoresos and infrared spectroscopy to study the occurrence of protein crosslinks in rubber latex treated with formaldehyde and glutaraldehyde.

Read More thumbnail image: Journal Highlight Maillard reaction in natural rubber latex Improvement of concentration process

Seeing through the smog: A new speedy method for extracting and purifying PAHs

Date: Sep 19, 2017

Author: Jon Evans

As part of ongoing efforts to monitor air pollution in Beijing, Chinese scientists have developed an integrated method for extracting and purifying polycyclic aromatic hydrocarbons (PAHs) and their derivatives.

Read More thumbnail image: Seeing through the smog A new speedy method for extracting and purifying PAHs
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