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Micrograms enough for LC on dyestuffs

Date: Jan 16, 2018

Author: Ryan De Vooght-Johnson

Various plants containing coloured alkaloids have been used as dyestuffs in the past, so there is a demand for analytical methods that can deal with small sample sizes, thus allowing the investigation of historical textiles. Scientists from Warsaw University of Technology have developed a new capillary HPLC method for these alkaloids, investigating its use with silk and wool.

Read More thumbnail image: Micrograms enough for LC on dyestuffs

Turbulence under the sun: Determining exposure to sunscreen ingredients

Date: Jan 15, 2018

Author: Jon Evans

By combining a sample preparation method called turbulence flow chromatography with LC-MS, German scientists have been able to detect three metabolites of a sunscreen ingredient in urine.

Read More thumbnail image: Turbulence under the sun Determining exposure to sunscreen ingredients

Impure state: Separating iron oxidation states in lithium-ion batteries

Date: Jan 15, 2018

Author: Jon Evans

A novel capillary electrophoresis method for determining whether a commonly-used material for battery cathodes contains any iron at the wrong oxidation state could help lithium-ion batteries retain their charge for longer.

Read More thumbnail image: Impure state Separating iron oxidation states in lithium-ion batteries

Spokes beat spirals: A novel flow cell design for chemiluminescence

Date: Jan 15, 2018

Author: Jon Evans

A new flow cell design for chemiluminescent detection is not only quicker and easier to produce via 3D printing than conventional designs, but also more sensitive.

Read More thumbnail image: Spokes beat spirals A novel flow cell design for chemiluminescence

Journal Highlight: Inter- and intraspecific variability of nitrogenated compounds in gorgonian corals via application of a fast one-step analytical protocol

Date: Jan 15, 2018

Author: separationsNOW

The chemodiversity of gorgonian alkaloids was investigated by applying a fast and effective protocol combining extraction and derivatization using small-scale tissue samples and GC/MS analysis.

Read More thumbnail image: Journal Highlight Inter- and intraspecific variability of nitrogenated compounds in gorgonian corals via application of a fast one-step analytical protocol

Oral squamous cell carcinoma: Dual protein biomarkers

Date: Jan 15, 2018

Author: Steve Down

A combination of two proteins found in saliva can predict oral squamous cell carcinoma and are unaffected by the risk factors human papillomavirus and Epstein-Barr virus, leading to the possibility of a clinical test for the cancer.

Read More thumbnail image: Oral squamous cell carcinoma Dual protein biomarkers

Beneficial bream bacteria biosurfactants: Analyzing bioactive compounds in bream guts

Date: Jan 8, 2018

Author: Jon Evans

Using various analytical techniques, including thin-layer chromatography, Italian scientists have discovered that certain bacteria in the guts of sea bream can produce biosurfactants with some highly useful properties.

Read More thumbnail image: Beneficial bream bacteria biosurfactants Analyzing bioactive compounds in bream guts

Journal Highlight: Sample preparation for large-scale bioanalytical studies based on liquid chromatographic techniques

Date: Jan 8, 2018

Author: separationsNOW

In this literature review, chemists from Romania detail the main sample preparation techniques used for large-scale bioanalytical studies with liquid chromatography, including protein precipitation, liquid–liquid extraction, solid-phase extraction and derivatization.

Read More thumbnail image: Journal Highlight Sample preparation for large-scale bioanalytical studies based on liquid chromatographic techniques

Journal Highlight: Mass spectrometry in untargeted LC/MS metabolomics: Electrospray ionisation parameters and global coverage of the metabolome

Date: Jan 8, 2018

Author: separationsNOW

Biochemists from South Africa have investigated the electronic factors, including capillary and sample cone voltages, relating to the functioning of the electrospray ionization source in metabolomics studies with liquid chromatography/mass spectrometry.

Read More thumbnail image: Journal Highlight Mass spectrometry in untargeted LCMS metabolomics Electrospray ionisation parameters and global coverage of the metabolome

Journal Highlight: Comparative proteomic analysis of Xanthomonas citri ssp. citri periplasmic proteins reveals changes in cellular envelope metabolism during in vitro pathogenicity induction

Date: Jan 8, 2018

Author: separationsNOW

Brazilian scientists have used two-dimensional gel electrophoresis to identify proteins associated with the virulence of the bacterium responsible for citrus canker, a disease of citrus plants such as lime.

Read More thumbnail image: Journal Highlight Comparative proteomic analysis of Xanthomonas citri ssp_ citri periplasmic proteins reveals changes in cellular envelope metabolism during in vitro pathogenicity induction
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