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GC/GC–MS

Q&A with Kory Kelly of Phenomenex; Nicholas H. Snow of Seton Hall University; and William Goodman and Adam Patkin of PerkinElmer, Inc.

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Chiral Technologies Europe has announced that its new chiral separations laboratory, commissioned earlier this year, is now operational and is separating compounds for biotechnology and pharmaceutical companies across Europe.

Dionex Corporation (Sunnyvale, California) will be hosting a series of free seminars on liquid chromatography throughout the United States and Canada from September 9?October 29, 2009.

They say it takes several years for an awards program to really get off the ground and start amassing a history, establishing a place for itself in the industry. If this is true, then I believe we can safely say that this year, the LCGC Pittcon Awards have officially arrived.

The autumn leg of PerkinElmer?s 2009 European ?For the Better? Tour will soon get underway. At this series of seminars, scientists, industry leaders and the company?s specialists will share their applications expertise and demonstrate how the company?s solutions can be used in sectors as diverse as environmental analysis, food safety, polymers and chemicals.

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Development and production of biopharmaceuticals is a growing segment of the pharmaceutical industry. The development of vaccines is only one - but as a result of the current H1N1 flu hysteria it is the most striking - segment of this emerging field. Recombinant proteins, ranging from insulin products to therapeutic antibodies, represent another important group of biopharmaceuticals. With the introduction of the first so-called biosimilars in Europe the demand for highly efficient analysis methods is further increasing. Newly developed stationary phases for the typical modes of biochromatography of native proteins such as SEC or IEC open up new opportunities for increasing throughput in the bioanalytical lab.

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The analysis of the molar mass distribution of polyethylene and polypropylene resins by GPC/SEC has always been considered a demanding task because of the requirement of high temperature operation for dissolution and complex hardware design, which often results in high maintenance cost, in particular related to the autosampler/injector and detector units, and in other problematic and consuming tasks such as solvent handling added to column fragility, sample degradation or detector sensitivity–stability.

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Over-expression of recombinant proteins is commonly used for the production of protein reagents in industry and academia. Problems often occur relating to the stress put on the cells to deal with this huge increase in synthesis. Cellular proteins that are part of the protein synthesis machinery are often up-regulated under such conditions. Large quantities of the recombinant protein can be bound to these cellular proteins, making purification difficult.

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A critical part of research and quality control analysis of proteins involves verifying the primary and secondary structure of a protein. Peptide mapping is the main technique used to determine the structure of a protein as well as identify any post-translational modifications.

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In this application, we demonstrate the use of supported liquid extraction (SLE) for the extraction of beta blockers and NSAIDS from plasma compared with traditional liquid–liquid extraction. SLE was demonstrated to yield consistent LOQs using lower sample volumes.