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Journal Highlight: 3D printing from MRI Data: Harnessing strengths and minimizing weaknesses

Date: Apr 24, 2017

Author: spectroscopyNOW

The basics of 3D printing and the current strengths and weaknesses of printing from MRI data as they pertain to model accuracy have been reviewed, covering considerations in the design of MRI sequences for 3D printing.

Read More thumbnail image: Journal Highlight 3D printing from MRI Data Harnessing strengths and minimizing weaknesses

Journal Highlight: The oxidized thiol proteome in aging and cataractous mouse and human lens revealed by ICAT labeling

Date: Apr 24, 2017

Author: spectroscopyNOW

All of the disulfide-forming noncrystallin proteins associated with age-related cataractogenesis in mice and humans have been identified using ICAT labelling techniques.

Read More thumbnail image: Journal Highlight The oxidized thiol proteome in aging and cataractous mouse and human lens revealed by ICAT labeling

UHPLC and Chemometrics Tease out Teasel’s Active Compounds

Date: Apr 17, 2017

Author: Ryan De Vooght-Johnson

Dipsacus apser, or Japanese teasel, is commonly used in Chinese herbal medicine, often after rinsing with wine and then boiling with water. Researchers from Nanjing University of Chinese Medicine compared the differences between the composition of the raw herb and wine-processed material, using UHPLC-MS/MS and the chemometric methods PCA, HCA and PLS-DA.

Read More thumbnail image: UHPLC and Chemometrics Tease out Teasels Active Compounds

Journal Highlight: UV/Vis spectroscopy combined with chemometrics for monitoring solid-state fermentation with Rhizopus microsporus var. oligosporus

Date: Apr 17, 2017

Author: spectroscopyNOW

Partial least squares and artificial neural network models have been presented for inferring protease and amylase activities from UV–vis spectra of samples removed during solid-state fermentation using Rhizopus microsporus var. oligosporus.

Read More thumbnail image: Journal Highlight UVVis spectroscopy combined with chemometrics for monitoring solid-state fermentation with Rhizopus microsporus var_ oligosporus

Cellular enzyme-substrate complexes: Probes for mass spectrometric detection

Date: Apr 15, 2017

Author: Steve Down

Enzyme complexes with other compounds that form in cells can be observed directly by mass spectrometry following a novel method developed in the US, in which an isotope-labelled probe is used to create a stable three-way complex with the enzyme and the substrate.

Read More thumbnail image: Cellular enzyme-substrate complexes Probes for mass spectrometric detection

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

Biodiesel analysis: Biofuel blend by NMR spectroscopy

Date: Apr 15, 2017

Author: David Bradley

A new quantitative method of analysing the biodiesel in a diesel-biodiesel blend using proton nuclear magnetic resonance (NMR) spectroscopy has been developed by researchers in Brazil. The resulting spectra are subjected to a univariate calibration in which the integrals of the spectra are considered. Statistical comparison with infrared (IR) spectra corroborate the findings.

Read More thumbnail image: Biodiesel analysis Biofuel blend by NMR spectroscopy

Pre-concentrated silver: FAAS analysis

Date: Apr 15, 2017

Author: David Bradley

Researchers in China have used a cloud point extraction (CPE) method to pre-concentrate trace levels of silver present in water samples for subsequent flame atomic absorption spectrometry (FAAS) analysis.

Read More thumbnail image: Pre-concentrated silver FAAS analysis

Chemical restoration: X-rays get beneath the paintwork

Date: Apr 15, 2017

Author: David Bradley

The Ghent Altarpiece was a family affair painted around 1432 by Flemish/Early Netherlandish artist Jan van Eyck and according to art historians probably his brother Hubert. Now, chemical imaging based on element-specific X-ray analysis of a large area of the work has revealed the original paint layers and assisted in cleanup and conservation.

Read More thumbnail image: Chemical restoration X-rays get beneath the paintwork

NMR revision: Compound all at sea

Date: Apr 15, 2017

Author: David Bradley

Nuclear magnetic resonance (NMR) spectroscopy is a powerful tool and throws up chemical structure insights for even the most complex of natural products. Sometimes, however, those spectral lines can lead chemists to the wrong stereocentres and skeletons. An international team has now revised the structure of an important marine metabolite.

Read More thumbnail image: NMR revision Compound all at sea
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