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Chemometrics tries to fix controversy on herbal mix

Date: Apr 17, 2019

Author: Ryan De Vooght-Johnson

Yin-Chen-Hao-Tang is a traditional Chinese medicine consisting of a mixture of three herbs, but there is some controversy as to the best way to prepare it. Researchers from the Shanghai Institute of Materia Medica and the Southwest University of Science and Technology (Mianyang, China) used chemometric techniques to compare the traditional and modern methods of producing Yin-Chen-Hao-Tang. 

Read More thumbnail image: Chemometrics tries to fix controversy on herbal mix

Hair loss laser treatment: Protein changes point to mechanism

Date: Apr 17, 2019

Author: Steve Down

A proteomic study of the hair follicles of men following low-level laser therapy to reverse the common form of hair loss known as androgenetic alopecia has highlighted the proteins involved and supported the use of this form of treatment.

Read More thumbnail image: Hair loss laser treatment Protein changes point to mechanism

Feeling supersonic: SMB analysis of petroleum fractions

Date: Apr 16, 2019

Author: Ryan De Vooght-Johnson

Oxygenation of heavy petroleum fractions can produce more valuable products, but the analysis of the resultant complex mixture is challenging owing to the many species present. Researchers from Sasol’s laboratories in Sasolburg (South Africa), the University of Pretoria and Tel Aviv University used initial purification by solid-phase extraction or supercritical fluid chromatography followed by separation by GC-MS with supersonic molecular beams to separate a mixture of oxygenated petroleum...

Read More thumbnail image: Feeling supersonic SMB analysis of petroleum fractions

Journal Highlight: An analytical method for the analysis of trihalomethanes in ambient air using solid‐phase microextraction gas chromatography‐mass spectrometry: An application to indoor swimming pool complexes

Date: Apr 16, 2019

Author: separationsNOW

A simple method for the collection and GC/MS analysis of the four brominated and chlorinated trihalomethanes in air samples has been developed and applied to indoor air from swimming pools.

Read More thumbnail image: Journal Highlight An analytical method for the analysis of trihalomethanes in ambient air using solidphase microextraction gas chromatographymass spectrometry An application to indoor swimming pool complexes

Brain extraction: A novel method for extracting neurotransmitters from live brains

Date: Apr 15, 2019

Author: Jon Evans

By taking advantage of solid-phase microextraction, Canadian chemists have found a way to extract neurotransmitters from the brain of a live monkey as non-invasively as possible.

Read More thumbnail image: Brain extraction A novel method for extracting neurotransmitters from live brains

Unrestricted mobility: Combining capillary electrophoresis with ion mobility spectrometry

Date: Apr 15, 2019

Author: Jon Evans

There are many benefits to coupling capillary electrophoresis with mass spectrometry, but there may be even more to coupling it with ion mobility spectrometry.

Read More thumbnail image: Unrestricted mobility Combining capillary electrophoresis with ion mobility spectrometry

Ahead of the curve: Conducting titration with capillary electrophoresis

Date: Apr 15, 2019

Author: Jon Evans

French scientists have found yet another use for capillary electrophoresis: determining the endpoint of a titration.

Read More thumbnail image: Ahead of the curve Conducting titration with capillary electrophoresis

Counter-current chromatography catches samphire compounds

Date: Apr 11, 2019

Author: Ryan De Vooght-Johnson

Salicornia species, such as marsh samphire, are becoming increasingly popular as foraged vegetables, but knowledge of their metabolites remains incomplete. Researchers from the Federal University of Rio de Janeiro and the Technical University of Brunswick (Germany) used high-speed counter-current chromatography and mass spectrometry to examine metabolites from the Brazilian species Salicornia gaudichaudiana. 

Read More thumbnail image: Counter-current chromatography catches samphire compounds

Journal Highlight: Neuropeptidomics: Comparison of parallel reaction monitoring and data‐independent acquisition for the analysis of neuropeptides using high‐resolution mass spectrometry

Date: Apr 9, 2019

Author: separationsNOW

Parallel‐reaction monitoring and data‐independent analysis using a hybrid Quadrupole–Orbitrap mass spectrometer have been compared for the quantification of neuropeptides in animal spinal cord tissues using Bland–Altman plots and variance analysis.

Read More thumbnail image: Journal Highlight Neuropeptidomics Comparison of parallel reaction monitoring and dataindependent acquisition for the analysis of neuropeptides using highresolution mass spectrometry

Journal Highlight: Analysis of volatile compounds in pork from four different pig breeds using headspace SPME/GC–MS

Date: Apr 8, 2019

Author: separationsNOW

A team of Chinese scientists used solid‐phase microextraction to capture volatile compounds from the pork meats of four different pig breeds, in order to determine how the compounds contribute to the flavor of pork.

Read More thumbnail image: Journal Highlight Analysis of volatile compounds in pork from four different pig breeds using headspace SPMEGCMS
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