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Journal Highlight: Liquid chromatographic resolution of amino acid esters of acyclovir including racemic valacyclovir on crown ether-based chiral stationary phases

Date: Aug 24, 2015

Author: separationsNOW

Valacyclovir and its analogs were resolved by HPLC on two chiral stationary phases based on (3,3'-diphenyl-1,1'-binaphthyl)-20-crown-6 covalently bonded to silica gel.

Read More thumbnail image: Journal Highlight Liquid chromatographic resolution of amino acid esters of acyclovir including racemic valacyclovir on crown ether-based chiral stationary phases

Pepper pesticides: Washing and blanching reduce pyridaben levels, measured by LC/MS

Date: Aug 17, 2015

Author: Steve Down

Blanching and washing significantly reduces the levels of pyridaben on pepper fruit and leaves, say scientists who measured levels of the pesticide with an LC/MS procedure.

Read More thumbnail image: Pepper pesticides Washing and blanching reduce pyridaben levels measured by LCMS

Yogurt colorants: HPLC for synthetic dyes

Date: Aug 3, 2015

Author: Steve Down

A simple HPLC method for measuring ten synthetic azo and non-azo dyes in yogurt and fermented milk drinks in a single run has been devised by scientists in Brazil.

Read More thumbnail image: Yogurt colorants HPLC for synthetic dyes

Journal Highlight: Root cause analysis of quality defects using HPLC–MS fingerprint knowledgebase for batch-to-batch quality control of herbal drugs

Date: Jul 20, 2015

Author: separationsNOW

A methodology has been proposed for batch-to-batch quality control of herbal drugs based on HPLC–MS fingerprints and a process knowledgebase using Compound E-jiao Oral Liquid as a case study.

Read More thumbnail image: Journal Highlight Root cause analysis of quality defects using HPLCMS fingerprint knowledgebase for batch-to-batch quality control of herbal drugs

Cisplatin in tissues: Liver and kidney distribution by LC/MS

Date: Jul 13, 2015

Author: Steve Down

A novel LC/MS/MS method for measuring the allocation of the anticancer drug cisplatin between rat liver and kidney will clarify the relationship between its toxicity, dosage and distribution.

Read More thumbnail image: Cisplatin in tissues Liver and kidney distribution by LCMS

Phytoplankton pigments: HPLC separation of chlorophylls and carotenoids

Date: Jul 1, 2015

Author: Steve Down

A novel HPLC method for analysing structurally related chlorophylls and carotenoids in phytoplankton in one run will help to pin down which species of red and green microalgae are present in ocean environments and how they react to changing light conditions.

Read More thumbnail image: Phytoplankton pigments HPLC separation of chlorophylls and carotenoids

Journal Highlight: D-Phenothrin-induced oxidative DNA damage in rat liver and kidney determined by HPLC-ECD/DAD

Date: Jun 22, 2015

Author: separationsNOW

The risk of genotoxicity of the pyrethroid insecticide D-phenothrin was assessed by measuring the oxidative stress it causes in rat liver and kidney.

Read More thumbnail image: Journal Highlight D-Phenothrin-induced oxidative DNA damage in rat liver and kidney determined by HPLC-ECDDAD

HPLC going green: Generic replacement of acetonitrile with acetone

Date: Jun 18, 2015

Author: Steve Down

Acetone has been explored as a greener mobile phase solvent than acetonitrile for HPLC separations, illustrated by the analysis of a plant extract using a corona charged aerosol detector.

Read More thumbnail image: HPLC going green Generic replacement of acetonitrile with acetone

Vulcanisation accelerator biomonitoring: Urinary levels of 2-mercaptobenzothiazole by LC/MS

Date: Jun 1, 2015

Author: Steve Down

A common rubber additive, 2-mercaptobenzothiazole, which has been used as a rubber vulcaniser for decades, has been measured in human urine by an LC/MS method as part of a German biomonitoring project.

Read More thumbnail image: Vulcanisation accelerator biomonitoring Urinary levels of 2-mercaptobenzothiazole by LCMS

Journal Highlight: Refolding and simultaneous purification of recombinant human proinsulin from inclusion bodies on protein-folding liquid-chromatography columns

Date: May 25, 2015

Author: separationsNOW

Refolding with simultaneous purification of recombinant human proinsulin from inclusion bodies from Escherichia coli were investigated using the surface of stationary phases in IMAC and high-performance SEC.

Read More thumbnail image: Journal Highlight Refolding and simultaneous purification of recombinant human proinsulin from inclusion bodies on protein-folding liquid-chromatography columns
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