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*  Allergenic oxidation products in ethoxylated non-ionic surfactants : Chemical characterization and studies on allergenic...
... and gas chromatography (GC). Structural analogues were synthesized and could be identified in the complex oxidation mixture ... The physicochemical behavior of individual oxidation products in pure water solutions was investigated. ... Surfactants have a complex chemical composition and are widely used in a variety of applications for to their amphiphilic ... The observed autoxidation of commonly used ethoxylated surfactants and formation of a complex degradation mixture indicate a ...
  http://uu.diva-portal.org/smash/record.jsf?pid=diva2:172304
*  Liquid chromatography-mass spectrometry - Wikipedia
While liquid chromatography separates mixtures with multiple components, mass spectrometry provides structural identity of the ... Coupled chromatography - MS systems are popular in chemical analysis because the individual capabilities of each technique are ... LC-MS is used in proteomics as a method to detect and identify the components of a complex mixture. The bottom-up proteomics LC ... partition chromatography, ion-exchange chromatography, size-exclusion chromatography, and affinity chromatography. Among these ...
  https://en.wikipedia.org/wiki/Liquid_chromatography%E2%80%93mass_spectrometry
*  Pharmacometabolomics - Wikipedia
... as well as chemical structural information that can be compared to pre-existing chemical libraries. GC-MS can be conducted in a ... which aid in initially separating out the metabolite components within complex sample mixtures, and can allow for the isolation ... The mass spectrometry (MS) approach is typically coupled to gas chromatography (GC), in GC-MS or liquid chromatography (LC), in ... for an individual patient. Such metabolic profiles can provide a complete overview of individual metabolite or pathway ...
  https://en.wikipedia.org/wiki/Pharmacometabolomics
*  Conservation scientist - Wikipedia
Combines gas chromatography (which uses gas "to separate complex mixtures of organic materials into their individual chemical ... The technique is used in conservation science to examine the structural makeup of objects and identify cracks, manufacturing ... Combines liquid chromatography (which uses liquid "to separate complex mixtures of organic materials into their individual ... Chromatography: A set of laboratory techniques used to separate mixtures of compounds. Several of the techniques are extremely ...
  https://en.wikipedia.org/wiki/Conservation_scientist
*  Chromatography - Wikipedia
... especially for complex mixtures. Both types of column are made from non-adsorbent and chemically inert materials. Stainless ... used as fingerprint to prove material identity or the GC/MS data is used to identify individual fragments to obtain structural ... Pyrolysis gas chromatography[edit]. Pyrolysis gas chromatography mass spectrometry is a method of chemical analysis in which ... Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile ...
  https://en.wikipedia.org/wiki/Chromatography
*  Analytical Method Development and Validation for the Identification of Spiraeoside Using RP-HPLC in Pharmaceutical Gel...
The herbal preparation is composed of a complex mixture of constituents; it cannot be given a structural formula. ... Chromatography Chromatography. Chromatography. Thermal Desorber Offers Flexibility for Material Emissions, Flavour and... ... The major and typical flavonoid of Filipendula ulmaria flowers is spiraeoside (quercetin-4'-glucoside) [5]. The chemical ... the spectrophotometer does not replace the precision achieved with HPLC for the separation and quantification of individual ...
  https://www.labmate-online.com/article/chromatography/1/sanovel-pharmaceuticals/panalytical-method-development-and-validation-for-the-identification-of-spiraeoside-using-rp-hplc-in-pharmaceutical-gel-formulationp/2246
*  Research in the Stenson Group
Mixtures too complex to be fractionated into individual components are relatively common in nature. Humic substances (the ... of structural components for individual humic molecules through tandem MS techniques; and mimicking of humic substances through ... Chemical Communications (2015), 51, 15914-15916. DOI: 10.1039/c5cc05843k. *Novotny, N.R.; Capley, E.N.; Stenson*, A.C.; Fact or ... The tools we use the most are HPLC (high pressure liquid chromatography) to separate components of a sample from each other and ...
  http://www.southalabama.edu/colleges/artsandsci/chemistry/alexandracstenson/index.html
*  Equipment
High pressure liquid chromatography. High pressure liquid chromatography (HPLC) is typically used to separate a mixture of ... Low-level quantification of analytes in complex matrices to ppm and ppb levels, confirmation or elucidation of chemical ... quantifying or purifying the individual components of the mixture. Some common examples are the separation and quantitation of ... Protein structural studies, additional dimension in proteomics, ambient ionisation approaches, small molecule separation. ...
  http://www.gre.ac.uk/engsci/services/anserv/masspc/equipment
*  GCMS as a Tool for Flavor Development
The chemical analysis of these flavors can be challenging. Gas Chromatography/Mass Spectrometry (GC/MS) is used as the main ... Despite the superior separation afforded by 2D GC, the identification of individual compounds in complex samples remains ... is an additional choice for screening complex mixtures, such as flavorings. The enhanced separation capacity offered by the ... The lack of fragmentation limits the amount of structural information that can be determined about the ionated species. However ...
  https://www.perfumerflavorist.com/flavor/research/GCMS-as-a-Tool-for-Flavor-Development-465710733.html
*  Patent US7253404 - Median filter for liquid chromatography-mass spectrometry data - Google Patents
The filter is applied to individual mass chromatograms, plots of ion abundance versus retention time for each detected mass-to- ... Standard linear filters are not effective for reducing noise in liquid chromatography-mass spectrometry (LC-MS) data because ... spiked noise is reduced in chromatography-mass spectrometry data by applying a nonlinear filter such as a moving median filter ... Chelius et al., 2002, "Quantitative Profiling of Proteins in Complex Mixtures Using Liquid Chromatography and Mass Spectrometry ...
  http://www.google.com/patents/US7253404?dq=5,987,610
*  US Patent # 6,881,586. Retentate chromatography and protein chip arrays with applications in biology and medicine -...
This invention provides methods of retentate chromatography for resolving analytes in a sample. The methods involve adsorbing ... Thus, tools for resolving complex mixtures of organic biomolecules, identifying individual biomolecules in the mixture and ... Thus, retentate chromatography provides direct information about chemical or structural characteristics of the retained ... Differential chemical analyses of gene expression and function require tools that can resolve the complex mixture of molecules ...
  http://patents.com/us-6881586.html
*  Peptide Nucleic Acids - CHEMICAL BIOLOGY
... reflects the multidimensional character of chemical biology, focusing in particular on the fundamental science of biological ... structures and systems, the use of chemical and biological techniques to elucidate ... Hybridization to complementary DNA or RNA allows separation from complex mixtures using open channel capillary electrophoresis. ... PNA and its structural analogs are synthesized conveniently by standard solid-phase methods (35). The backbone chemistry of PNA ...
  http://schoolbag.info/chemistry/chemical_biology/128.html
*  Red Sea Microbial Diversity for Antimicrobial and Anticancer Agents | Open Access Journals
Crude organic extract usually contains complex mixtures of many different compounds, thus several sequential purification steps ... and to identify its biological and chemical activities. In some cases, certain structural feature was not detected in a crud ... DEAE Chromatography, v) Hydroxylapatite column chromatography, vi) Gel filtration chromatography, and vii) HPLC Ion-exchange ... In this techniques individual cells encapsulated by small porous gel matrix. This method easy allows the exchange of signaling ...
  https://www.omicsonline.org/open-access/red-sea-microbial-diversity-for-antimicrobial-and-anticancer-agents-2155-9929-1000267.php?aid=66387
*  Helping The others Realize The Advantages Of HPLC systems used for analysis of the products
Whilst liquid chromatography separates mixtures with many components, mass spectrometry offers structural id of the individual ... Coupled chromatography - MS systems are well known in chemical analysis due to the fact the individual abilities of each and ... Quickly, it was understood the analysis of complex mixtures would need the development of a totally automated on-line coupling ... Size-exclusion chromatography (SEC), also referred to as gel permeation chromatography or gel filtration chromatography, ...
  http://angeloodinr.pages10.com/Helping-The-others-Realize-The-Advantages-Of-HPLC-systems-used-for-analysis-of-the-products-16375989
*  Environment and Climate Change Canada - Science and Technology - Environment Canada S & T Expert Profile
Identification of bio-active unknowns in complex mixtures using liquid chromatography quadrupole time-of-flight mass ... Chemical Fingerprinting Lead on Oil Sands Monitoring Programme. *Identification of hormonally active substances associated with ... Altered reproduction in fish exposed to pulp and paper mill effluents: Roles of individual compounds and mill operating ... Steroidal aromatic naphthenic acids in oil sands process-affected water: Structural comparisons with environmental estrogens. ...
  http://www.ec.gc.ca/scitech/default.asp?lang=En&n=F97AE834-1&xsl=scitechprofile&xml=F97AE834-A762-47A6-A2D9-9C397FD72F37&formid=BF407A30-9C8D-4412-9B9C-721005036DCD
*  Glossary of biotechnology and genetic engineering
cf undefined; organic complex.. chemical mutagen A chemical or product capable of causing genetic mutation in living organisms ... casein hydrolysate Mixture of amino acids and peptides produced by enzymatic or acid hydrolysis of casein. cf organic complex; ... An individual exhibiting two or more genotypes in patches derived from two or more embryos. An individual derived from two ... chromatography (Gr. chroma, colour + graphein, meaning to draw or write) 1. A method for separating and identifying the ...
  http://www.fao.org/docrep/003/X3910E/X3910E06.htm
*  The human gut microbiome and body metabolism: implications for obesity and diabetes.
... and applicable to intact biomaterials rich in chemical structural information. NMR requires minimal sample preparation and can ... Such differences in the gut microbiome are also responsible for the variation in the ability of an individual's capacity to ... It is possible, with such approaches, to elucidate complex pathways and networks that are altered in specific disease states. ... With the use of hydrophilic interaction liquid chromatography-HPLC (HILIC-HPLC), bioactive molecules derived from gut microbes ...
  https://www.thefreelibrary.com/amp/The+human+gut+microbiome+and+body+metabolism%3A+implications+for...-a0369319761
*  Lipidomics - Wikipedia
Solid-phase extraction (SPE) chromatography is useful for rapid, preparative separation of crude lipid mixtures into different ... As a consequence several replicates are normally required for reliable determination of lipid levels in complex mixtures. ... The huge structural diversity found in lipids arises from the biosynthesis of various combinations of these building blocks. ... It is a soft-ionization method that rarely disrupts the chemical nature of the analyte prior to mass analysis. Various ESI-MS ...
  https://en.wikipedia.org/wiki/Lipidomics
*  Nutrients | Free Full-Text | A Balanced Risk-Benefit Analysis to Determine Human Risks Associated with Pyrrolizidine Alkaloids...
The toxicities of individual PA in biological systems are not only based on PA structural features but also on the pattern of ... The chemical structure defines the toxicity of PA. Only 1,2-dehydropyrrolizidine-alkaloids are relevant for toxic effects [49 ... Analysis of an herbal mixture which was used for cooking in the family demonstrated high amounts of PA, establishing the casual ... Single components of an herbal extract may show carcinogenic properties, but the complex extract does not [58]. To extrapolate ...
  https://www.mdpi.com/2072-6643/9/7/717/htm
*  Patente US7396940 - Combinatorial library of 3-aryl-1H-indole-2-carboxylic acid - Google Patentes
The mixture of enzyme-ligand complex and free enzyme can then be treated with a powerful denaturing agent, such as guanidinium ... The second chemical module is coupled to the first chemical module. Where the second chemical module includes 3 different ... preparative thin-layer chromatography, column chromatography, preparative gas chromatography, etc. ... Each individual resin portion thus constitutes a separate sub-library. When testing the compounds, if a given sub-library shows ...
  http://www.google.es/patents/US7396940?dq=flatulence
*  Mass Spectrometry Word Cloud | Mass Spectrometry Blog
Rationale Structural characterization of individual compounds in very complex mixtures is difficult to achieve. One important ... RATIONALE The chemical composition of particulate phase of cigarette smoke inhaled by the active smoker is still poorly known ... Optimization of flow splitting and make‐up flow conditions in liquid chromatography ‐ electrospray ionization ‐ mass ... Here, different individual compounds presumed to be present in a complex crude oil mixture have been synthesized and ...
  http://mass-spec.lsu.edu/blog/mass-spectrometry-word-cloud/
*  JoVE | Peer Reviewed Scientific Video Journal - Methods and Protocols
... chemical and physical research. Watch our scientific video articles. ... Sebum contains a complex mixture of lipids, including triacylglycerides, which is species-specific. The broad chemical ... In the present paper, we provide an overview of our recent work in utilizing head models based on individual structural MRI ... Profiling the Triacylglyceride Contents in Bat Integumentary Lipids by Preparative Thin Layer Chromatography and MALDI-TOF Mass ...
  https://www.jove.com/visualize/abstract/23483948/temporal-change-functional-richness-evenness-eastern-african-plio
*  Biologists | Article about Biologists by The Free Dictionary
... chromatography). The relative position of atoms in complex molecules is studied by X-ray diffraction analysis. The ways in ... Individual development of organisms. Among organisms that reproduce sexually, the life of each individual starts with a single ... In the structural and energy sense a biogeocenosis is an open, relatively stable system with inputs of substances and energy ... X-irradiation and chemical agents are used to suppress the body's immune system. It will be possible to overcome tissue ...
  http://encyclopedia2.thefreedictionary.com/Biologists
*  Bath Salts - AACC.org
... gas chromatography/mass spectrometry (GC-MS), and liquid chromatography/time-of-flight mass spectrometry (LC/TOF-MS) testing ... Chemical structures of common bath salt stimulant and. hallucinogenic compounds. Bath salts contain several psychoactive ... Dosages, formulations, and drug mixtures vary from product to product and from batch to batch, and adulterants ranging from ... In this article, we review the complex nomenclature and drug composition encountered with bath salt formulations, along with ...
  https://www.aacc.org/publications/cln/articles/2014/march/bath-salts
*  Milestones in Analytical Chemistry
Suited for Gas Chromatography of Complex Mixtures. *Apparatus and Materials for Hyperpressure Gas Chromatography of Nonvolatile ... Plasma Chromatography with Laser-Produced Ions. *Structural Information from Tandem Mass Spectrometry for China White and ... Combination of Gas Chromatography and Chemical Ionization Mass Spectrometry. *Laser-Excited Atomic Fluorescence Flame ... Quantitative Analysis of Individual Neurons by Open Tubular Liquid Chromatography with Voltammetric Detection ...
  http://elchem.kaist.ac.kr/publication/paper/misc/1994_Milestones_in_Analytical_Chemistry.html