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Viagra cheats exposed by TLC

Date: Jun 1, 2017

Author: Ryan De Vooght-Johnson

Health supplements in some countries are frequently adulterated with PDE5 inhibitors, such as sildenafil (Viagra) or unapproved analogues. Researchers from Tianjin University of Science and Technology in China used a combination of TLC and Raman spectroscopy for the rapid identification of these pharmaceutical products in supplement samples.

Read More thumbnail image: Viagra cheats exposed by TLC

Journal Highlight: Evaluation of nandrolone and ractopamine in the urine of veal calves: liquid chromatography-tandem mass spectrometry approach

Date: May 22, 2017

Author: separationsNOW

Two specific liquid chromatography-tandem mass spectrometry methods have been developed for the analysis of nandrolone and ractopamine in veal calf urine, both including hydrolysis of the corresponding conjugates.

Read More thumbnail image: Journal Highlight Evaluation of nandrolone and ractopamine in the urine of veal calves liquid chromatography-tandem mass spectrometry approach

Journal Highlight: Simultaneous determination of VOCs with a wide range of polarities in urine by headspace SPME coupled to GC/MS

Date: May 22, 2017

Author: separationsNOW

Korean chemists have used a bi-polar carboxen-polydimethylsiloxane fiber to extract volatile organic compounds from urine, prior to analysis by gas chromatography/mass spectrometry.

Read More thumbnail image: Journal Highlight Simultaneous determination of VOCs with a wide range of polarities in urine by headspace SPME coupled to GCMS

Journal Highlight: HPTLC and magnetochromatography of new complexes of carboxylates with transition metals or rare earth elements and their ligands

Date: May 22, 2017

Author: separationsNOW

By combining thin-layer chromatography with a magnetic field, Polish chemists have developed a novel method for determining the lipophilicity of complexes of carboxylates with transition metals or rare earth elements.

Read More thumbnail image: Journal Highlight HPTLC and magnetochromatography of new complexes of carboxylates with transition metals or rare earth elements and their ligands

Journal Highlight: Monitoring of the stability of cocaine and some metabolites in water and oral fluid by a newly developed CE method

Date: May 22, 2017

Author: separationsNOW

Spanish chemists have developed a new capillary electrophoresis method for studying the stability of cocaine and some of its metabolites in water and saliva.

Read More thumbnail image: Journal Highlight Monitoring of the stability of cocaine and some metabolites in water and oral fluid by a newly developed CE method

Morphine addiction: Enzyme activity

Date: May 16, 2017

Author: Steve Down

Polish scientists have measured the activities of four enzymes in the brain implicated in the mechanism of morphine addiction in the search for therapeutic targets which do not produce the serious side effects during pain treatment.

Read More thumbnail image: Morphine addiction Enzyme activity

Slim chance of purity with internet herbal weight loss products

Date: May 15, 2017

Author: Ryan De Vooght-Johnson

So-called ‘herbal’ slimming aids are often adulterated with banned slimming drugs or other chemicals, to increase their effectiveness. Researchers at the Scientific Institute of Public Health in Brussels and the University of Antwerp examined several different samples of such products by UHPLC, classifying them using various chemometric methods, such as hierarchical cluster analysis (HCA), Classification and Regression Tree (CART), and partial least squares discriminant analysis (PLS-DA).

Read More thumbnail image: Slim chance of purity with internet herbal weight loss products

Journal Highlight: GC-MS analysis of various phytoestrogens in health functional foods

Date: May 15, 2017

Author: separationsNOW

The contents of 21 phytoestrogens in commercial health functional foods in South Korea sold to alleviate menopausal symptoms have been measured by GC/MS.

Read More thumbnail image: Journal Highlight GC-MS analysis of various phytoestrogens in health functional foods

Unbeatable two-for-one offer: Extracting phosphoproteins and glycoproteins with one material

Date: May 15, 2017

Author: Jon Evans

Two Chinese chemists have developed a porous material that can simultaneously extract phosphoproteins and glycoproteins from biological samples such as blood serum.

Read More thumbnail image: Unbeatable two-for-one offer Extracting phosphoproteins and glycoproteins with one material

Didn’t feel a thing: Novel CE-MS method for analyzing metabolites in live cells

Date: May 15, 2017

Author: Jon Evans

A newly-developed CE-MS method has allowed US scientists to analyze the metabolites in live frog embryo cells, providing unprecedented molecular insight into embryo development.

Read More thumbnail image: Didnt feel a thing Novel CE-MS method for analyzing metabolites in live cells
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