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Juanjuan Feng et al.
Journal of separation science, 40(24), 4773-4779 (2017-10-19)
An in-tube solid-phase microextraction device was developed by packing poly(ionic liquids)-coated stainless-steel wires into a polyether ether ketone tube. An anion-exchange process was performed to enhance the extraction performance. Surface properties of poly(ionic liquids)-coated stainless-steel wires were characterized by scanning
Min He et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1079, 41-50 (2018-02-14)
Head Space/Solid Phase Micro-Extraction (HS-SPME) coupled with Gas Chromatography/Mass Spectrometer (GC/MS) was used to determine the volatile/heat-labile components in Ligusticum chuanxiong Hort - Cyperus rotundus rhizomes. Facing co-eluting peaks in k samples, a trilinear structure was reconstructed to obtain the
Rachael Hough et al.
Metabolomics : Official journal of the Metabolomic Society, 14(2), 19-19 (2018-01-26)
Disturbance to the hindgut microbiota can be detrimental to equine health. Metabolomics provides a robust approach to studying the functional aspect of hindgut microorganisms. Sample preparation is an important step towards achieving optimal results in the later stages of analysis.
Takahiko Kusakabe et al.
The Tokai journal of experimental and clinical medicine, 28(3), 131-138 (2004-04-02)
A sensitive, specific, and reproducible capillary gas chromatography (GC) with micro-electron capture detection (micro-ECD) method using headspace solid-phase micro-extraction (HS-SPME) for the quantitative analysis of p,p'-DDE in rat whole blood and hair was developed. A 100 microm polydimethylsiloxane (PDMS) phase
Satoshi Mochizuki et al.
FEBS letters, 590(7), 1017-1027 (2016-03-19)
Plants biosynthesize a variety of bioactive lipid derivatives, such as green leaf volatiles (GLVs) and jasmonates (JAs). Here we identify a lipoxygenase 2 (LOX2) involved in GLV biosynthesis in Arabidopsis using mutant lines for each of the six LOX isoforms
Mingxue Wu et al.
Journal of chromatography. A, 1456, 34-41 (2016-06-19)
We designed a novel hydrazone covalent organic framework (COF) and developed a polydopamine (PDA) method to immobilize COF on a stainless steel fiber for headspace solid-phase microextraction (HS-SPME). A series of characterization studies was performed to validate the structure and
Miyi Yang et al.
Food chemistry, 197 Pt B, 1064-1072 (2015-12-18)
A green, simple, inexpensive dispersive solid-phase microextraction method coupled with high-performance liquid chromatography was developed for rapid screening and selective recognition of benzoylurea insecticides (BUs) in honey and tea beverages. A novel adsorbent, ionic liquid (IL)-modified β-cyclodextrin/attapulgite (β-CD/ATP), was prepared
Jim Van Durme et al.
Food chemistry, 205, 66-72 (2016-03-24)
Today, the cocoa industry is in great need of faster and robust analytical techniques to objectively assess incoming cocoa quality. In this work, inline roasting hyphenated with a cooled injection system coupled to a gas chromatograph-mass spectrometer (ILR-CIS-GC-MS) has been
Mario F Mirabelli et al.
The Analyst, 143(4), 891-899 (2018-01-23)
We evaluated the performance of a dielectric barrier discharge ionization (DBDI) source for pesticide analysis in grape juice, a fairly complex matrix due to the high content of sugars (≈20% w/w) and pigments. A fast sample preparation method based on
F Pena-Pereira et al.
The Analyst, 140(21), 7417-7422 (2015-09-15)
Ionogels, a family of hybrid materials in which ionic liquids (ILs) are confined in a sol-gel network, are receiving much attention in a variety of scientific and technological fields. In this work, ionogels derived from three different ILs based on
Stefano Dugheri et al.
International journal of analytical chemistry, 2016, 2129053-2129053 (2016-11-11)
Hydrogen fluoride (HF) is a basic raw material for a wide variety of industrial products, with a worldwide production capacity of more than three million metric tonnes. A novel method for determining particulate fluoride and gaseous hydrogen fluoride in air
Jie Wang et al.
Environmental pollution (Barking, Essex : 1987), 236, 871-877 (2018-03-03)
Risk assessment of hydrophobic organic contaminants (HOCs) using the total chemical concentration following exhaustive extraction may overestimate the actual availability of HOCs to non-target organisms. Existing methods for estimating HOC bioavailability in soil have various operational limitations. In this study
Junwei J Zhu et al.
PloS one, 12(6), e0179090-e0179090 (2017-06-09)
The Primary screwworm, Cochliomyia hominivorax (Coquerel), is a serious pest feeding on living flesh of any warm-blooded animal, including humans. It was eradicated from the United States in the early 1980s using the sterile male technique. However, it was recently
Theodore R Mellors et al.
Journal of breath research, 11(3), 031002-031002 (2017-04-21)
Mycobacteria are the leading cause of death from infectious disease worldwide and limitations in current diagnostics are hampering control efforts. In recent years, the use of small volatile molecules as diagnostic biomarkers for mycobacteria has shown promise for use in
Aniela Burant et al.
Chemosphere, 144, 2247-2256 (2015-11-26)
Treatment and reuse of brines, produced from energy extraction activities, requires aqueous solubility data for organic compounds in saline solutions. The presence of salts decreases the aqueous solubility of organic compounds (i.e. salting-out effect) and can be modeled using the
Inmaculada Talaverano et al.
Journal of the science of food and agriculture, 98(3), 1140-1152 (2017-08-02)
Controlled water deficits affect grape berry physiology and the resulting wines, with volatile composition being the one of the affected parameters. However, there is a potential disconnect between aromatic maturity and sugar accumulation. Accordingly, the effects of three different water
Laura Pistelli et al.
Acta biochimica Polonica, 60(1), 43-50 (2013-02-27)
Aromatic plant species present in the natural Park of Tuscany Archipelago are used as flavoring agents and spices, as dietary supplements and in cosmetics and aromatherapy. The plants are usually collected from wild stands, inducing a depletion of the natural
Laura Colombaioni et al.
PloS one, 12(11), e0188351-e0188351 (2017-11-22)
Lactate and ethanol (EtOH) were determined in cell culture medium (CCM) of immortalized hippocampal neurons (HN9.10e cell line) before and after incubation with Thallium (Tl). This cell line is a reliable, in vitro model of one of the most vulnerable
Lauren E Musumeci et al.
Molecules (Basel, Switzerland), 20(7), 12280-12299 (2015-07-15)
Analyses of key odorous polyfunctional volatile thiols in wines (3-mercaptohexanol (3-MH), 3-mercaptohexylacetate (3-MHA), and 4-mercapto-4-methyl-2-pentanone (4-MMP)) are challenging due to their high reactivity and ultra-trace concentrations, especially when using conventional gas-chromatography electron impact mass spectrometry (GC-EI-MS). We describe a method
Qinqin Chen et al.
Food research international (Ottawa, Ont.), 105, 605-615 (2018-02-13)
Volatile profile of ten different varieties of fresh jujubes was characterized by HS-SPME/GC-MS (headspace solid phase micro-extraction combined with gas chromatography-mass spectrometry) and E-nose (electronic nose). GC-MS results showed that a total of 51 aroma compounds were identified in jujubes
Marcos Bouza et al.
Journal of mass spectrometry : JMS, 52(9), 561-570 (2017-06-14)
Pulsed glow discharge (PGD) coupled to time of flight mass spectrometry (TOFMS) has been investigated for volatile organic compound (VOC) identification and determination. Optimization of PGD operational conditions (chamber design, applied power, pressure and duty cycle) was performed using acetone
Mohammad Karimi et al.
Bulletin of environmental contamination and toxicology, 90(3), 291-295 (2012-11-28)
A gold nanoparticles modified fused silica fiber was developed and used for the head space solid phase micro-extraction (HS-SPME) of polycyclic aromatic hydrocarbons (PAHs), including naphthalene, anthracene, acenaphthylene, phenanthrene, fluoranthene and pyrene. The effects of different parameters influencing the extraction
Michelle Hartmann et al.
In vitro cellular & developmental biology. Animal, 44(10), 458-463 (2008-09-24)
Serum of animal origin, like foetal calf serum (FCS), is used as a standard supplement for media to cultivate mammalian cells, mostly due to its growth-supporting properties. Unfortunately, animal serum has many disadvantages like the risk of contamination, high costs
Shanshan Zhou et al.
Se pu = Chinese journal of chromatography, 36(2), 100-106 (2018-03-28)
A novel silica-based solid-phase microextraction (SPME) fiber was successfully fabricated by the immobilization of silica nanoflakes (SiO
Gun Woong Lee et al.
Protoplasma, 252(4), 997-1007 (2014-11-29)
This study examined the volatile terpenes produced by rice seedlings in response to oxidative stress induced by various abiotic factors. Solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) analyses revealed that when exposed to UV-B radiation, rice seedlings emitted a bouquet of monoterpene
Francimilton Rabelo Rodrigues et al.
Journal of the science of food and agriculture (2018-02-01)
Borojoa sorbilis (Ducke) is an Amazonian species with edible fruits that are widely consumed by the local population, but little studied and not yet economically explored. Thus the aim of this study was to describe the chemical composition, volatile compounds
Yaowapa Lorjaroenphon et al.
Journal of agricultural and food chemistry, 63(3), 776-786 (2014-12-23)
Thirty aroma-active components of a cola-flavored carbonated beverage were quantitated by stable isotope dilution assays, and their odor activity values (OAVs) were calculated. The OAV results revealed that 1,8-cineole, (R)-(-)-linalool, and octanal made the greatest contribution to the overall aroma
Pallavi Mohekar et al.
Journal of agricultural and food chemistry, 65(4), 872-878 (2017-01-10)
Brown marmorated stink bugs (BMSB) release stress compounds, tridecane and (E)-2-decenal, that affect final wine quality. This study focuses on determining the effect of wine processing on (E)-2-decenal and tridecane release in both red and white wines. Wines were produced
Seta Noventa et al.
Analytica chimica acta, 858, 66-73 (2015-01-20)
This work validated an automated, fast, and low solvent- consuming methodology suited for routine analysis of tributyltin (TBT) and degradation products (dibutyltin, DBT; monobutyltin, MBT) in biota samples. The method was based on the headspace solid-phase microextraction methodology (HS-SPME), coupled
A Gierak et al.
Talanta, 69(5), 1079-1087 (2008-10-31)
The conditions of preparation of new types of carbon fibers for solid phase micro extraction (SPME) prepared by methylene chloride pyrolysis (at 600 degrees C) on the quartz fiber (100 microm) as well as by supporting synthetic active carbon (prepared
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