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Saturday, August 30, 2014
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Analysis of Fruit Commodities by GC-TOFMS and GCxGC-TOFMS Using QuEChERS Approach
Doug Staples, Joe Binkley and John Heim

The availability of fruit commodities from a wide variety of sources has increased the need for rapid and accurate screening for pesticides in fruit. Not all fruit commodities are brought to market under the strict guidelines of the United States Department of Agriculture. Determining whether or not the Environmental Protection Agency tolerances for various pesticides have been violated is important in the risk assessment for consumers in the United States.

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Characterization of Nutrients and Actives in Herbal Supplements and Nutriceuticals Using UHPLC-Multi-Reflecting Time-of-Flight Mass Spectrometry
Jeffrey S. Patrick, Kevin Siek and Joe Binkley

The qualitative and quantitative analysis of the content of nutritional supplements and alternative medicinal therapies is becoming more important and regulation by the FDA is imminent. High resolution mass spectrometry provides a rapid, selective, and useful mechanism for QC of extracts and finished dosage forms, producing a minable, comprehensive data set.

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Facing the challenges in bio-pharmaceutical production: newly developed polymer-based ion exchange chromatography media and their application to the purification for Immunoglobulin – from egg yolk
Masakatsu Omote, Noriko Shoji, Naohiro Kuriyama and Daniel Kune

Much attention has been given to ion exchange (IEX) media as a means to improve productivity as a result of increasing demand for higher efficiency on the downstream process. Until recently, strain optimisation for high productivity and upstream purification were the bottlenecks for most bio-processes.

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Detection of Environmental Contaminants Caused by the Oil Spill in the Gulf of Mexico by GC and HPLC
Sky Countryman, Ngoc Nguyen, Jeff Layne, Kory Kelly and Zeshan Aqeel

In order to help understand the impact that the oil spill has caused, laboratories are looking for rapid and robust analytical procedures to characterize the hydrocarbon contaminants. This work provides SPE, GPC, GC-FID, GC/MS, and HPLC analytical methods for analyzing the most common contaminants that originated from the leak.

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Detection and Identification of Dispersants (COREXIT® 9527 and 9500) by GC/MS and LC-MS/MS
Sky Countryman, Matthew Trass, Seyed Sadjadi, Jeff Layne

Dispersants are plasticizers commonly used to prevent clumping and help dissipate oil slicks. In this work, we used GC/MS and LC-MS/ MS to detect and indentify two of the most widely used dispersants (Corexit 9527 and 9500).

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Understanding the Role of Quality by Design in Chromatographic Method Development
Michael McBrien, Juan Wang, Teresa Ponzio and Tara Sinclair

Quality by Design (QbD) has become popular within the pharmaceutical industry and the FDA has cited a risk-based approach to drug development as a desirable state for the near future.1 In this state, more complete information and transparency relating to risk assessment will be made available for new drug aplications speeding the approval process, and preventing late-stage failures.

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Ensuring the Quality of Registered Compounds in a Drug Discovery Environment – A Multidisciplinary Approach
Ryan Sasaki and Tara Sinclair

Lexicon Pharmaceuticals have demonstrated that a practical automated verification system using HPLC, LC/MS, and 1D and 2D NMR can be implemented in an industrial/pharmaceutical environment. This system has proven to be robust, and provides added value to compound collection integrity and quality.

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A Self-Monitoring Quality Management System Incorporating Spectral and Chromatographic Data
David Snyderman, Colin Read and Tara Sinclair

LIMS are useful in managing certain types of data for quality management and sample tracking. However, these systems are generally limited in the types of information they can process and store. A unique automated quality management system has been developed and implemented at a fragrance manufacturer to evaluate chromatographic and spectral data of samples during quality testing.

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Highly Accurate Measurements of Ochratoxin A (OTA) in Different Foodstuffs
Andreas Breidbach, J. Stroka and F. Ulberth

The European Union-Reference Laboratory for Mycotoxins at the Institute of Reference Materials and Measurements of the Joint Research Centers of the European Commission regularly conducts proficiency tests to assess the measurement capabilities of the National Reference Laboratories of the EU-Member States.

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Showing Results 31 - 40 of 53
Scientific News
High Capacity Antibody Purification
Researchers from the A*Star Bioprocessing Technology Institute have used magnetic nanoparticles to break the capacity barrier for antibody purification.
Embalming Study ‘Rewrites’ Key Chapter in Egyptian History
New evidence to suggest that the origins of mummification started in ancient Egypt 1,500 years earlier than previously thought.
RP HPLC Retention Behaviours in Carotenoids Analysis
The efficiency of the separation process in reversed-phase HPLC is highly dependent on the binary hydro-organic mobile phase composition and surface properties of the packing material.
Identification of Psoriatic Arthritis Mediators in Synovial Fluid
This study represents the most comprehensive proteomic analysis of psoriatic arthritis synovial fluid, to date.
Simultaneous Determination of Six Flame Retardants in Water
The work aimed to develop an analytical procedure for the extraction and simultaneous determination of selected flame retardants.
Using LC-MS to Analyse Sulfonamides in Food Grade Honey
Sulfonamides are one of a number of groups of chemicals whose presence in honey is limited by international regulations.
Assessing Anticancer Drugs Efficacy by Amino Acid Metabolomics
Researchers aimed to develop a method that determines the therapeutic efficacy of anticancer drugs based on the changes in amino acid metabolism at the cellular level.
Reimagining UHPLC
To learn more about the new Vanquish UHPLC system from Thermo Fisher Scientific we spoke to Wulff Niedner, Director of HPLC Product Marketing.
UHPLC: The Greening Face of Liquid Chromatography
Greening pathways for liquid chromatography is especially significant for drug analysis in the pharmaceutical matrix.
Evaluating Acute Hydrogen Sulfide Poisoning in Rats through Serum Metabolomics
Through the use of GC/MS-based metabolomics, researchers have evaluated the effect of acute hydrogen sulfide poisoning on the metabolic profiles of rats.
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