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Monoclonal mixtures measured in plasma

Date: Jul 20, 2018

Author: Ryan De Vooght-Johnson

The use of animals in pharmaceutical pharmacokinetic studies needs to be minimised for both ethical and financial reasons. Scientists from Chungnam National University, Daejeon, South Korea, investigated the use of multiple dosing (known as cassette dosing) for following the pharmacokinetics of four monoclonal antibodies by means of LC-MS.

Read More thumbnail image: Monoclonal mixtures measured in plasma

Printing power: A printed electrochemical detector for commercial CE systems

Date: Jul 16, 2018

Author: Jon Evans

Scientists in the US have used 3D printing to produce a microfluidic device for conducting amperometry that can easily be coupled to commercial CE systems.

Read More thumbnail image: Printing power A printed electrochemical detector for commercial CE systems

Considering the options: Separating proteins in a MOF-coated capillary

Date: Jul 16, 2018

Author: Jon Evans

Chinese scientists have shown that coating a capillary with a metal-organic framework offers a versatile and effective new option for separating proteins.

Read More thumbnail image: Considering the options Separating proteins in a MOF-coated capillary

The buzz of summer: Extracting pesticides from honeybees

Date: Jul 16, 2018

Author: Jon Evans

Chilean scientists have developed a single-step method for extracting various pesticides from honeybees, in order to determine what range of pesticides they are being exposed to in Chile.

Read More thumbnail image: The buzz of summer Extracting pesticides from honeybees

Journal Highlight: Molecular identification of Asian lacquers from different trees using Py‐GC/MS and ToF‐SIMS

Date: Jul 16, 2018

Author: separationsNOW

Pyrolysis-GC/MS and ToF-SIMS have been used to characterise lacquers from the Asian trees Toxicodendron vernicifluum from China, Japan, and Korea, Toxicodendron succedaneum from Vietnam and Gluta usitata from Myanmar.

Read More thumbnail image: Journal Highlight Molecular identification of Asian lacquers from different trees using PyGCMS and ToFSIMS

Sputum proteome: Optimising label-free mapping

Date: Jul 15, 2018

Author: Steve Down

The healthy human sputum proteome has been derived in an international project, assessing the sources of variability and revealing a core set of 284 proteins that will be useful for studying patients with inflammatory respiratory diseases.

Read More thumbnail image: Sputum proteome Optimising label-free mapping

Beer’s volatile fraction caught by microextraction

Date: Jul 11, 2018

Author: Ryan De Vooght-Johnson

The various volatile compounds in beer are important for determining its flavour so accurate analytical methods for their quantification are essential. Researchers from the University of Chemistry and Technology, Prague, used solid-phase microextraction (SPME) and GC-MS to detect volatile beer compounds, optimising t he extraction using a central composite experimental design.

Read More thumbnail image: Beers volatile fraction caught by microextraction

Stress-free removals: Removing SDS from proteins by cation-exchange chromatography

Date: Jul 9, 2018

Author: Jon Evans

Scientists from Singapore have developed a new process, based on cation exchange chromatography, for removing the surfactant sodium dodecyl sulfate from proteins prior to analysis by mass spectrometry.

Read More thumbnail image: Stress-free removals Removing SDS from proteins by cation-exchange chromatography

Journal Highlight: Sample preparation in foodomic analyses

Date: Jul 9, 2018

Author: separationsNOW

The use of highly sophisticated instruments for high‐performance and high‐throughput analyses, as well as miniaturization and the use of laboratory robotics in metabolomics, proteomics, peptidomics, and genomics, have been reviewed.

Read More thumbnail image: Journal Highlight Sample preparation in foodomic analyses

Journal Highlight: Simultaneous qualitative and quantitative determination of compounds in Aloe arborescens Mill using LC with ion trap time‐of‐flight mass spectrometry and diode array detectors

Date: Jul 9, 2018

Author: separationsNOW

Chinese scientists used ion trap time‐of‐flight mass spectrometry and diode array detection, together with liquid chromatography, to analyze the compounds in powder of the plant Aloe arborescens.

Read More thumbnail image: Journal Highlight Simultaneous qualitative and quantitative determination of compounds in Aloe arborescens Mill using LC with ion trap timeofflight mass spectrometry and diode array detectors
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