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Balls of steel: Needed to extract pesticide residues from fruit

Date: Nov 18, 2019

Author: Jon Evans

Brazilian researchers have developed an improved matrix solid-phase dispersion method for extracting pesticide residues from fruit by simply adding some steel balls.

Read More thumbnail image: Balls of steel Needed to extract pesticide residues from fruit

May contain wheat: Identifying protein allergens

Date: Nov 18, 2019

Author: Jon Evans

Belgian scientists have used Western blotting to investigate which specific protein allergens are responsible for different allergic reactions to wheat.

Read More thumbnail image: May contain wheat Identifying protein allergens

Brand new double act: Multi-angle light scattering meets reversed-phase liquid chromatography

Date: Nov 18, 2019

Author: Jon Evans

German researchers have demonstrated that coupling multi-angle light scattering with reversed-phase liquid chromatography could prove ideal for studying monoclonal antibodies.

Read More thumbnail image: Brand new double act Multi-angle light scattering meets reversed-phase liquid chromatography

Chasing cheese cheats with LC-MS

Date: Nov 14, 2019

Author: Ryan De Vooght-Johnson

Many varieties of cheese are made from either goat’s milk or sheep’s milk, but adulteration with cheaper cow’s milk is a continuing problem. Researchers from the University of Chemistry and Technology, Prague, used partial hydrolysis of cheese protein followed by LC-MS to detect contamination of sheep’s cheese and goat’s cheese with material derived from cows.

Read More thumbnail image: Chasing cheese cheats with LC-MS

Journal Highlight: Derivatization‐free determination of short‐chain volatile amines in human plasma and urine by headspace gas chromatography‐mass spectrometry

Date: Nov 13, 2019

Author: separationsNOW

A broadly applicable headspace-GC/MS procedure has been developed for the simultaneous and quantitative determination of di- and trimethylamine and di- and triethylamine in human plasma and urine without derivatization.

Read More thumbnail image: Journal Highlight Derivatizationfree determination of shortchain volatile amines in human plasma and urine by headspace gas chromatographymass spectrometry

MIPs lend a hand: To isolate specific proteins

Date: Nov 11, 2019

Author: Jon Evans

By adding molecularly imprinted polymers to an ion-exchange resin, Chinese researchers have produced a version of ion-exchange chromatography that can isolate specific proteins all on its own.

Read More thumbnail image: MIPs lend a hand To isolate specific proteins

Journal Highlight: Development of a CZE method for the determination of natamycin in food and a comparison with a LC method

Date: Nov 11, 2019

Author: separationsNOW

Chemists in China have developed a capillary zone electrophoresis method for determining natamycin in food products such as pastries, cheeses and beverages.

Read More thumbnail image: Journal Highlight Development of a CZE method for the determination of natamycin in food and a comparison with a LC method

Journal Highlight: Focusing surface acoustic waves assisted electrochemical detector in microfluidics

Date: Nov 11, 2019

Author: separationsNOW

Chinese researchers have developed a novel electrochemical detection device that works by exciting focused surface acoustic waves.

Read More thumbnail image: Journal Highlight Focusing surface acoustic waves assisted electrochemical detector in microfluidics

Journal Highlight: Determining multi‐pesticide residues in teas by dispersive SPE combined with speed‐regulated directly suspended droplet microextraction followed by GC-MS/MS

Date: Nov 11, 2019

Author: separationsNOW

Scientists in China have developed a suspended droplet microextraction method to condense pesticide residues from teas through dispersive solid‐phase extraction prior to analysis by gas chromatography with tandem mass spectrometry.

Read More thumbnail image: Journal Highlight Determining multipesticide residues in teas by dispersive SPE combined with speedregulated directly suspended droplet microextraction followed by GC-MSMS

False protein biomarkers: Sample handling biases in proteomic studies

Date: Nov 7, 2019

Author: Steve Down

Plasma proteome profiling has been used to create biomarker panels of sample quality that will help to minimise bias resulting from sample collection and processing by identifying rogue proteins from other blood components such as erythrocytes.

Read More thumbnail image: False protein biomarkers Sample handling biases in proteomic studies
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