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Functionalised nanocarbons: Chrome-plated NMR spectroscopy

Date: Feb 1, 2015

Author:

Proton NMR (nuclear magnetic resonance) spectroscopy, high-resolution mass spectrometry and X-ray crystallography have been used to probe chromium-centred cycloparaphenylene organometallic rings. The results could allow chemists to define ways to readily functionalize nanocarbons, according to research published in the Journal of the American Chemical Society.

Read More thumbnail image: Functionalised nanocarbons Chrome-plated NMR spectroscopy

Full of beans: NMR spectroscopy confirms coffee

Date: Jan 15, 2015

Author:

An international team from Colombia and Germany has demonstrated how to use NMR spectroscopy to identify adulteration or contamination of coffee beans based on country of origin, a useful tool in the fight against food fraud in a high-value market.

Read More thumbnail image: Full of beans NMR spectroscopy confirms coffee

Other side of the sheets: NMR battles bedbugs

Date: Jan 8, 2015

Author: David Bradley

Nuclear magnetic resonance (NMR) spectroscopy has outstripped gas-chromatography mass spectrometry in the search for an important pheromone of the increasingly common pest, the bedbug (Cimex lectularius).

Read More thumbnail image: Other side of the sheets NMR battles bedbugs

Journal Highlight: Examination of amber and related materials by NMR spectroscopy

Date: Jan 2, 2015

Author: spectroscopyNOW

The solid-state 13C and solution 1H NMR spectra of fossilized resins (ambers) has generated five groupings of materials based on spectral characteristics.

Read More thumbnail image: Journal Highlight Examination of amber and related materials by NMR spectroscopy

NMR spectroscopy rides in: Detects horse fat

Date: Dec 15, 2014

Author: David Bradley

The presence of horsemeat in adulterated meat products can now be revealed quickly and easily using nuclear magnetic resonance (NMR) spectroscopy to test the fat profile of the food without the need for complication and long-winded genetic analysis.

Read More thumbnail image: NMR spectroscopy rides in Detects horse fat

Journal Highlight: On the tuning of high-resolution NMR probes

Date: Dec 1, 2014

Author: spectroscopyNOW

Three optimum conditions for the tuning of NMR probes are compared: the conventional tuning optimum, the spin noise tuning optimum and the newly introduced frequency shift tuning optimum.

Read More thumbnail image: Journal Highlight On the tuning of high-resolution NMR probes

Equine ordure: NMR reveals fungal antibiotic

Date: Dec 1, 2014

Author: David Bradley

NMR spectroscopy reveals the structure of an antibiotic protein, copsin, from a surprising source: the grey shag fungus that grows on horse dung. The antibiotic has the same ultiamte effect on bacteria as small molecule compounds but offers an entirely different biochemistry that might be exploited in drugs to defeat antibiotic resistance.

Read More thumbnail image: Equine ordure NMR reveals fungal antibiotic

Solid-state NMR joins IUCr

Date: Nov 20, 2014

Author: Professor Robin Harris, University of Durham

In this International Year of Crystallography, NMR has at last established its own Commission within The International Union of Crystallography, joining 22 other commissions on a whole range of crystallographic subjects.

Read More thumbnail image: Solid-state NMR joins IUCr

Insecticidal fungi: Enzyme inhibitors extracted

Date: Nov 15, 2014

Author: David Bradley

Screening of dozens of strains of fungi that infect insects has led to the discovery of a strong inhibitor for the enzyme tyrosinase. Tyrosinase activity is involved in insect development processes but also in human aging, the development of melanoma, wound healing, and even in the browning of fruits and vegetables.

Read More thumbnail image: Insecticidal fungi Enzyme inhibitors extracted

Journal Highlight: Aqueous and lipid nuclear magnetic resonance metabolomic profiles of the earthworm Aporrectodea caliginosa show potential as an indicator species for environmental metabolomics

Date: Nov 5, 2014

Author: spectroscopyNOW

The aqueous and lipid metabolites in Aporrectodea caliginosa have been examined using high-resolution 1- and 2-dimensional nuclear magnetic resonance spectroscopy, allowing worms from different sites to be distinguished.

Read More thumbnail image: Journal Highlight Aqueous and lipid nuclear magnetic resonance metabolomic profiles of the earthworm Aporrectodea caliginosa show potential as an indicator species for environmental metabolomics
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