W271500

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Capillary atmospheric pressure chemical ionization using liquid point electrodes.

Sonja Klee et al.

Rapid communications in mass spectrometry : RCM, 28(14), 1591-1600 (2014-06-05)

Atmospheric pressure chemical ionization (APCI) sources operated with point to plane DC discharges ('Coronas') frequently suffer from point electrode degradation and potentially lead to oxidation and/or fragmentation of the generated analyte ions. It is postulated that these adverse effects are

Gas-liquid chromatographic properties of positional isomers of methyl thia, selena, and tellura laurate analogs.

M S Jie et al.

Lipids, 32(6), 679-681 (1997-06-01)

Gas-liquid chromatographic analyses of three complete series of synthetic positional isomers of methyl thia, selena, and tellura laurate analogs were carried on a nonpolar (SE-30) and a polar (SP-2330) stationary phase. The average ECL (equivalent chain length) values of the

Enzymatic chemoselective synthesis of secondary-amide surfactant from N-methylethanol amine.

Jitender Sharma et al.

Journal of bioscience and bioengineering, 100(6), 662-666 (2006-02-14)

Efficient selective synthesis of the secondary amide surfactant N-methyl lauroylethanolamide from methyl laurate and N-methylethanol amine by carrier-fixed Chirazyme L-2 (Candida antarctica) using a kinetic strategy has been demonstrated. When different solvents were screened for product yields using Chirazyme L-2

Determination of the volatile fraction of Polygonum bistorta L. at different growing stages and evaluation of its antimicrobial activity against two major honeybee (Apis mellifera) pathogens.

Cecotti R, et al.

Chemistry and Biodiversity, 9(2), 359-369 (2012)

Effect of several factors on the mechanical properties of pressure-sensitive adhesives used in transdermal therapeutic systems.

D A Dimas et al.

AAPS PharmSciTech, 1(2), E16-E16 (2004-01-20)

The effects of coating thickness, type of adhesive, and type and concentration of enhancer on the mechanical properties of two acrylic pressure-sensitive adhesives (PSAs) were investigated using a 2(4) factorial design and an optimization technique. Sixteen formulations containing 0% or

Effect of fatty acid on the accumulation of thiamine disulfide in rat skin.

Y Komata et al.

Biological & pharmaceutical bulletin, 17(5), 705-708 (1994-05-01)

The effect of long chain fatty acid (FA) and its analogs on the accumulation of thiamine disulfide (TDS) in rat skin using propylene glycol as a vehicle was studied in vitro. Lauric acid (12:0) increased the accumulation of TDS in

Fluoride, triclosan and organic weak acids as modulators of the arginine deiminase system in biofilms and suspension cells of oral streptococci.

E Barboza-Silva et al.

Oral microbiology and immunology, 24(4), 265-271 (2009-07-04)

The arginine deiminase system (ADS) of oral bacteria is a major generator of alkali (ammonia) in dental plaque and is considered to have anticaries effects. However, many of the antimicrobial agents used in oral care products may reduce alkali production

Retention time prediction of compounds in Grob standard mixture for apolar capillary columns in temperature-programmed gas chromatography.

Yasar Thewalim et al.

Analytical and bioanalytical chemistry, 393(1), 327-334 (2008-08-30)

This paper presents an extension of a previous investigation in which the behavior of nonpolar compounds in temperature-programmed gas chromatographic runs was predicted using thermodynamic (entropy and enthalpy) parameters derived from isothermal runs. In a similar manner, entropy and enthalpy

Direct quantification of fatty acids in wet microalgal and yeast biomass via a rapid in situ fatty acid methyl ester derivatization approach.

Tao Dong et al.

Applied microbiology and biotechnology, 99(23), 10237-10247 (2015-08-16)

Accurate determination of fatty acid contents is routinely required in microalgal and yeast biofuel studies. A method of rapid in situ fatty acid methyl ester (FAME) derivatization directly from wet fresh microalgal and yeast biomass was developed in this study.

Synthesis of a novel series of 2-methylsulfanyl fatty acids and their toxicity on the human K-562 and U-937 leukemia cell lines.

Néstor M Carballeira et al.

Lipids, 40(10), 1063-1068 (2005-12-31)

The hitherto unknown 2-methylsulfanyldecanoic acid and 2-methylsulfanyldodecanoic acid were synthesized from methyl decanoate and methyl dodecanoate, respectively, through the reaction of lithium diisopropylamide and dimethyldisulfide in THF followed by saponification with potassium hydroxide in ethanol. Both alpha-methylsulfanylated FA were cytotoxic

Evaluation of injection methods for fast, high peak capacity separations with low thermal mass gas chromatography.

Brian D Fitz et al.

Journal of chromatography. A, 1392, 82-90 (2015-03-31)

Low thermal mass gas chromatography (LTM-GC) was evaluated for rapid, high peak capacity separations with three injection methods: liquid, headspace solid phase micro-extraction (HS-SPME), and direct vapor. An Agilent LTM equipped with a short microbore capillary column was operated at

Development and application of a non-targeted extraction method for the analysis of migrating compounds from plastic baby bottles by GC-MS.

Matthias Onghena et al.

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 31(12), 2090-2102 (2014-11-20)

In 2011, the European Union prohibited the production of polycarbonate (PC) baby bottles due to the toxic effects of the PC monomer bisphenol-A. Therefore, baby bottles made of alternative materials, e.g. polypropylene (PP) or polyethersulphone (PES), are currently marketed. The

Study on flavour volatiles of ?-aminobutyric acid (GABA) green tea.

Zeng Z, et al.

African Journal of Biotechnology, 11(51), 11333-11341 (2012)

Identification of volatile compounds in cultivars barker, collinson, fortuna and geada of avocado (Persea americana, Mill.) fruit.

Galvao MDS, et al.

Food Sci. Technol., 36(3), 439-447 (2016)

Gene Cloning, High-Level Expression, and Characterization of an Alkaline and Thermostable Lipase from Trichosporon coremiiforme V3.

Jian-Rong Wang et al.

Journal of microbiology and biotechnology, 25(6), 845-855 (2015-01-16)

The present study describes the gene cloning and high-level expression of an alkaline and thermostable lipase gene from Trichosporon coremiiforme V3. Nucleotide analysis revealed that this lipase gene has an open reading frame of 1,692 bp without any introns, encoding

Optimization of supercritical fluid consecutive extractions of fatty acids and polyphenols from Vitis vinifera grape wastes.

Oier Aizpurua-Olaizola et al.

Journal of food science, 80(1), E101-E107 (2014-12-05)

In this study, supercritical fluid extraction has been successfully applied to a sequential fractionation of fatty acids and polyphenols from wine wastes (2 different vitis vinifera grapes). To this aim, in a 1st step just fatty acids were extracted and

New Y-shaped surfactants from renewable resources.

Tammar Hussein Ali et al.

Colloids and surfaces. B, Biointerfaces, 123, 981-985 (2014-12-04)

A series of sugar-based surfactants, involving a single hydrophobic chain (C12) and two side-by-side arranged head groups, was prepared form simple glucose precursors. All surfactants were highly water soluble and exhibited exclusively micellar assemblies. This behavior makes them interesting candidates

Non-invasive characterization of the adipogenic differentiation of human bone marrow-derived mesenchymal stromal cells by HS-SPME/GC-MS.

Dong-Kyu Lee et al.

Scientific reports, 4, 6550-6550 (2014-10-10)

A non-invasive method to characterize human mesenchymal stromal cells during adipogenic differentiation was developed for the first time. Seven fatty acid methyl esters (FAMEs), including methyl laurate, methyl myristate, methyl palmitate, methyl linoleate, methyl oleate, methyl elaidate and methyl stearate

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