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Hot Pepper Compounds Caught by Cool Coulometric Detection

Date: Apr 17, 2017

Author: Ryan De Vooght-Johnson

Whether you love it or loathe it, you may well want to know how much of that hot pepper taste is in the food you buy. Scientists from Brussels, Tokyo and Osaka have developed a novel HPLC method using coulometric detection to quantify capsaicinoids, the compounds that give the hot sensation.

Read More thumbnail image: Hot Pepper Compounds Caught by Cool Coulometric Detection

Journal Highlight: Determination of ethyl glucuronide and fatty acid ethyl esters in hair samples

Date: Apr 17, 2017

Author: separationsNOW

Two methods for the routine assessment of alcohol exposure by hair analysis have been presented, combining analysis of ethyl glucuronide by LC/MS/MS and fatty acid ethyl esters by GC/MS/MS.

Read More thumbnail image: Journal Highlight Determination of ethyl glucuronide and fatty acid ethyl esters in hair samples

Milk whey glycoproteins: Interspecies comparison

Date: Apr 15, 2017

Author: Steve Down

A comprehensive examination of the glycoproteins in the milk whey from several mammals by Chinese researchers has identified more than 200 N-glycosylation sites, the majority of which have not been reported previously.

Read More thumbnail image: Milk whey glycoproteins Interspecies comparison

Graphene takes up the challenge: A novel ion-exchange material for challenging separations

Date: Apr 10, 2017

Author: Jon Evans

Chinese chemists have combined graphene with two different polymers to create a novel stationary phase material for anion-exchange chromatography.

Read More thumbnail image: Graphene takes up the challenge A novel ion-exchange material for challenging separations

Journal Highlight: Zinc sulfide nanosheets as a novel solid-phase extraction material for flavonoids

Date: Apr 10, 2017

Author: separationsNOW

Chinese scientists have developed zinc sulfide nanosheets as a novel solid-phase extraction material for use with high-performance liquid chromatography.

Read More thumbnail image: Journal Highlight Zinc sulfide nanosheets as a novel solid-phase extraction material for flavonoids

Journal Highlight: Characterization of crude oil asphaltenes by coupling SEC directly to an ultrahigh-resolution MS

Date: Apr 10, 2017

Author: separationsNOW

German scientists have coupled Fourier transform Orbitrap mass spectrometry with size-exclusion chromatography to analyze the asphaltenes in crude oil.

Read More thumbnail image: Journal Highlight Characterization of crude oil asphaltenes by coupling SEC directly to an ultrahigh-resolution MS

Journal Highlight: Ruthenium(II)–arene metallacycles: Crystal structures, interaction with DNA, and cytotoxicity

Date: Apr 10, 2017

Author: separationsNOW

Chemists in China and the UK used gel electrophoresis to investigate how 24 newly-synthesized ruthenium metallamacrocycles interact with DNA.

Read More thumbnail image: Journal Highlight RutheniumIIarene metallacycles Crystal structures interaction with DNA and cytotoxicity

Journal Highlight: Chemometrics-assisted chromatographic fingerprinting: An illicit methamphetamine case study

Date: Apr 10, 2017

Author: separationsNOW

A curve resolution approach for chromatogram fingerprinting of GC/MS data has been applied for the first time to identify the embedded impurities of a drug of abuse.

Read More thumbnail image: Journal Highlight Chemometrics-assisted chromatographic fingerprinting An illicit methamphetamine case study

Journal Highlight: Purification and characterisation of soluble acid invertase from mango fruits

Date: Apr 6, 2017

Author: separationsNOW

Chinese scientists have used ammonium sulphate fractionation and anion-exchange chromatography to extract and purify soluble acid invertase from mango fruits.

Read More thumbnail image: Journal Highlight Purification and characterisation of soluble acid invertase from mango fruits

Journal Highlight: A versatile and highly selective colorimetric sensor for the detection of amines

Date: Apr 6, 2017

Author: separationsNOW

Scientists in the US have developed a novel method for detecting amines by colorimetric detection after separation by thin-layer chromatography, which they've used to detect the volatile amines responsible for food spoilage in fish samples.

Read More thumbnail image: Journal Highlight A versatile and highly selective colorimetric sensor for the detection of amines
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