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Wada Mitsuhiro - - 2012
An HPLC-fluorescence (FL) method for determination of sulfur-containing amino acids such as homocysteine (Hcy), methionine (Met) and cysteine (Cys) in human plasma was developed. The sulfur-containing amino acids were labeled with 4-(N,N-dimethylaminosulfonyl)-7-fluoro-2,1,3-benzoxadiazole (DBD-F). Calibration curves in the range of 1-100 µm (Hcy and Met) and 5-500 µm (Cys) indicated good linearities (r ≥ 0.998). ...
Kim Tae Soo - - 2013
The degree of highly oxidised lipids was determined by a modified method using profile changes of fatty acids in lard and soybean oil heated at 180°C. The usefulness of the modified method was compared through conjugated dienoic acid (CDA) and/or p-anisidine value (p-AV) methods. Absolute values, which were expressed as ...
Wabaidur Saikh Mohammad - - 2012
A flow injection (FI) method is reported for the determination of folic acid by chemiluminescence method. This method is based on the reaction of folic acid with Ru(bipy)(3)(2+) and Ce(IV) to produce chemiluminescence. The calibration curve was linear over the range of 2.5×10(-5)-3.1×10(-7)mol/L with a detection limit of 2.3×10(-8)mol/L (S/N=3). ...
Dasgupta Amitava - - 2012
OBJECTIVE: Mycophenolic acid requires routine therapeutic drug monitoring. We evaluated suitability of a new PETINIA (particle enhanced turbidimetric inhibition immunoassay) assay on the Dimension EXL analyzer for monitoring of mycophenolic acid by comparing values obtained by this assay with a HPLC-UV method. DESIGN AND METHODS: Mycophenolic acid concentrations determined in ...
Sumino Megumi - - 2012
Hangekobokuto (banxia-houpo-tang) is a Kampo (traditional Japanese) medicine used mostly for anxiety disorder and consists of Pinellia Tuber, Poria Sclerotium, Magnolia Bark, Perilla Herb and Ginger. Perilla Herb contains an essential oil rich in perillaldehyde, which has a pleasant flavor, but this is easily lost due to heating. We therefore ...
Sedaghat Naser - - 2012
Hydrocolloid-based materials have been extensively used to coat fruit and vegetables to prolong shelf-life. The effects of different concentrations of acidic washing (acetic, ascorbic, citric and malic acids) followed by coating with gum arabic (GA), carboxymethyl cellulose and emulsified gum arabic (EGA) were evaluated on the weight loss (WL), firmness ...
Bizjak Jan - - 2012
In this study, changes in quality and various biochemical parameters of 'Idared' apples during prolonged shelf life period after ultra-low oxygen (ULO) storage were investigated. Additionally, the impact of the postharvest application of 1-methylcyclopropene (1-MCP) on different parameters was evaluated. After the harvest, apples were stored in the ULO storage ...
Elshaer Amr - - 2012
The generally accepted paradigm of "inert" and "mono functional" excipient in dosage form has been recently challenged with the development of individual excipients capable of exhibiting multiple functions (eg: binder-disintegrants, surfactant which affect P-gp function). The proposed study has been designed within the realm of multi functionality and is the ...
Sgherri Cristina - - 2012
The antioxidative response of grapevine leaves (Vitis vinifera cv. Trebbiano) affected by the presence of grapevine fanleaf virus was studied during the summer of 2010 at three different harvest times (July 1st and 26th, and August 30th). At the first and second harvest, infected leaves showed increases in the concentration ...
Atcher Joan - - 2012
The increase of the ionic strength amplifies the species bearing acidic side chains from a bio-inspired dynamic combinatorial library of macrocyclic pseudopeptides, in close resemblance to the evolution observed for the proteins of halophilic microorganisms.
Xiao Yunna - - 2012
Two novel lanthanide complex-based luminescent probes, ANMTTA-Eu3+ and ANMTTA-Tb3+ {ANMTTA: [4'-(4-amino-3-nitrophenoxy)methylene-2,2':6',2"-terpyridine-6,6"-diyl] bis(methylenenitrilo) tetrakis(acetic acid)}, have been designed and synthesized for the highly sensitive and selective time-gated luminescence detection of hypochlorous acid (HOCl) in aqueous media. The probes are almost non-luminescent due to the photoinduced electron transfer (PET) process from the ...
Curtin Vincent - - 2012
The co-processing of active pharmaceutical ingredient (API) with an excipient which has a high glass transition temperature (Tg) is a recognised strategy to stabilise the amorphous form of a drug. This work investigates whether co-processing a model API, sulfadimidine (SDM) with a series of low Tg excipients prevents or reduces ...
Escobar Juan David - - 2013
Recently, electronic tongues (ET) have appeared as an excellent alternative to traditional techniques for the evaluation of food quality and processes. ET systems are based on arrays of low selectivity sensors that are simultaneously sensitive to several components in a measured sample (cross-sensitivity). The aim of this study was to ...
Wang Yan - - 2012
The integration of oleaginous microalgae cultivation with high-value products is considered a low-cost approach for manufacturing algae-based biodiesel. The objective of this study was to investigate the potential of using Fe(II) to produce fatty acids and astaxanthin in mixotrophic Chromochloris zofingiensis. Fatty acid biosynthesis was less sensitive than astaxanthin formation ...
Zhang Wen - - 2012
Complete sample digestion is prerequisite for achieving reproducible and accurate analytical results for geological samples. Open vessel acid digestions successfully dissolve mafic samples, but this method cannot achieve complete dissolution of felsic samples due to the presence of refractory minerals such as zircon. In this study, an efficient and simplified ...
Scholz Franziska - - 2012
The room-temperature ionic liquid (RT-IL) [C(CH(3) )(3) ](+)  [Al(2) Br(7) ](-) (m.p. 2 °C) was generated by bromide abstraction from tert-butyl bromide with the Lewis acid aluminum bromide in the absence of solvent. The crystal structure of the tert-butyl cation salt was determined by X-ray diffraction. NMR, IR, and Raman spectroscopy, ...
Xi Zhu-Mei - - 2012
Yan73 is a 'teinturier' red wine variety cultivated in China and widely used in winemaking to strengthen red wine colour. The objective of this study was to evaluate the effect of exogenous abscisic acid (ABA) applied to the grapevine cluster on the antioxidant capacity and phenolic content of the wine ...
Junqueira João R C - - 2013
A simple and fast electrochemical method for quantitative analysis of picric acid explosive (nitro-explosive) based on its electrochemical reduction at copper surfaces is reported. To achieve a higher sample throughput, the electrochemical sensor was adapted in a flow injection system. Under optimal experimental conditions, the peak current response increases linearly ...
Agatonovic-Kustrin S - - 2012
INTRODUCTION: Echinacea preparations are among the most popular herbal remedies worldwide. Although it is generally assigned immune enhancement activities, the effectiveness of Echinacea is highly dependent on the Echinacea species, part of the plant used, the age of the plant, its location and the method of extraction. OBJECTIVE: The aim ...
Plessas Stavros - - 2012
  The natural mixed culture kefir was immobilized on boiled corn grains to produce an efficient biocatalyst for lactic acid fermentation with direct applications in food production, such as sourdough bread making. The immobilized biocatalyst was initially evaluated for its efficiency for lactic acid production by fermentation of cheese whey ...
McPherson Peter A C - - 2012
Nanosized titanium dioxide (TiO(2)) is a common component of sunscreen preparations and cosmetics as it reflects UV and visible light in accordance to Rayleigh's law. However, in aqueous environments, TiO(2) is an efficient photocatalyst, producing superoxide (O(2)(-•)) and hydroxyl (HO(•)) radicals, which are highly damaging to biomolecules. We investigated the ...
Shen Dazhong - - 2013
The impedance of a capacitively coupled contactless conductivity detector (C(4)D) in capillary electrophoresis (CE) was measured by an impedance analysis method. The influence of solution conductivity and capillary dimension on impedance parameters was investigated. Under the experimental conditions used, 86-99.9% of the total impedance of a C(4)D is composed by ...
Rastegarzadeh S - - 2013
A novel optical method for the determination of thiram has been developed using surface plasmon resonance peak of gold nanoparticles (AuNPs). The stable and dispersed AuNPs were directly synthesized by reduction of HAuCl4 with ascorbic acid in micellar media according to a simple approach. The presence of thiram during formation ...
Campenni' L - - 2012
Today microalgae represent a viable alternative source for high-value products. The specie Chlorella protothecoides (Cp), heterotrophically grown, has been widely studied and provides a high amount of lutein and fatty acids (FA) and has a good profile for biodiesel production. This work studies carotenoid and FA production by autotrophic grown ...
Huitrón Carlos - - 2012
Agave tequilana fructans are the source of fermentable sugars for the production of tequila. Fructans are processed by acid hydrolysis or by cooking in ovens at high temperature. Enzymatic hydrolysis is considered an alternative for the bioconversion of fructans. We previously described the isolation of Aspergillus niger CH-A-2010, an indigenous ...
Wang Buyun - - 2012
A pretreatment was developed to remove nitrogen from ramie residue and cotton stalk to eliminate potential nitrogen pollutants in biomass energy production. In the pretreatment, straw was treated with acid wastewater from bioleaching for 3h followed by Clostridium thermocellum incubation for 2h. Most nitrogen was removed from biomass waste and ...
Liu Weilu - - 2013
A novel composite film derived from cysteic acid and poly(diallydimethylammonium chloride)-functionalized graphene (PDDA-GN) was employed as an enhanced electrode material for ultrasensitive determination of metronidazole. The cysteic acid/PDDA-GN composite film was prepared by the electrochemical grafting of cysteic acid onto the PDDA-GN coated glassy carbon electrode (GCE). The cyclic voltammetry ...
Rand Emily E Center for Nanotechnology, NASA Ames Research Center, Moffett Field, CA 94035, - - 2013
A biosensor based on an array of vertically aligned carbon nanofibers (CNFs) grown by plasma enhanced chemical vapor deposition is found to be effective for the simultaneous detection of dopamine (DA) and serotonin (5-HT) in the presence of excess ascorbic acid (AA). The CNF electrode outperforms the conventional glassy carbon ...
Barros Karina V - - 2012
BACKGROUND & AIMS: N-3 fatty acids (FA) may have benefits in ICU patients. The aims were to identify whether FA status is altered in critical illness and to evaluate the effect of supplemental intravenous n-3 FA on plasma FA status and clinical outcome in ICU patients receiving enteral nutrition. METHODS: Enterally ...
Wang Jiewei - - 2012
Phenol was investigated for the ability of TiO(2) photocatalysis to increase its bioavailability as an electron donor for denitrification. The rate of nitrate removal by denitrification was increased by up to 2.6-fold by exposing phenol to photocatalysis for 30 min, although the rate decreased with increasing photocatalysis. The increased denitrification rate ...
Ferrer Ana - - 2012
The influence of temperature (150-190°C), time (0-20min), liquid/solid ratio (6-8) and sulfuric acid concentration (0.1-0.5%), on the hydrolysis of palm empty fruit bunches (EFBs) was studied and the liquid and solid fractions were analyzed. Polynomial models were found to reproduce the experimental results with errors less than 15% in most ...
Babich Lara - - 2012
Herein, we report a new flow process with immobilized enzymes to synthesize complex chiral carbohydrate analogues from achiral inexpensive building blocks in a three-step cascade reaction. The first reactor contained immobilized acid phosphatase, which phosphorylated dihydroxyacetone to dihydroxyacetone phosphate using pyrophosphate as the phosphate donor. The second flow reactor contained ...
Janůšová Barbora - - 2012
Transdermal permeation enhancers are compounds that temporarily decrease skin barrier properties to promote drug flux. In this study, we investigated enhancers with amino acids (proline, sarcosine, alanine, β-alanine, and glycine) attached to hydrophobic chain(s) via a biodegradable ester link. The double-chain lipid-like substances displayed no enhancing effect, whereas single-chain substances ...
Chen Chi-Hao - - 2012
In this work, we have developed a simple and reliable cobalt oxide (Co(3)O(4)) based amperometric sensor for the determination of NADH. A sheet shape Co(3)O(4) nanooxide was synthesized by the CTAB assisted hydrothermal technique and was characterized by SEM and XPS. Owing to the redox property of Co(3)O(4), the operating ...
El Kadib Abdelkrim - - 2012
The co-condensation of functional alkoxysilanes with tetraethoxysilane in the presence of a structure directing agent under sol-gel process chemistry is a common way to access functional organosilica with an ordered mesostructure. In this report, bulky silylated fatty acid methyl esters were used both as co-templating bio-molecules and functionalizing agents in ...
Liu Guangfei - - 2012
Geobacter metallireducens was found to be capable of decolorizing several azo dyes with different structures to various extents. Pyruvate, ethanol, acetate, propionate, and benzoate could support 66.3 ± 2.6-93.7 ± 2.1 % decolorization of 0.1 mM acid red 27 (AR27) in 40 h. The dependence of the specific decolorization rate on AR27 concentration (25 to 800 μM) followed ...
Ulziijargal Enkhjargal - - 2013
Mushroom mycelia of Antrodia camphorata, Agaricus blazei, Hericium erinaceus and Phellinus linteus were used to substitute 5% of wheat flour to make bread. Bread quality, including specific volume, colour property, equivalent umami concentration (EUC), texture profile analysis, sensory evaluation and functional components, was analysed. Mycelium-supplemented bread was smaller in loaf ...
Liu Hai-Xia - - 2012
Tetrahexahedral Pt nanocrystals (THH Pt NCs), bound by high index facets, belong to an emerging class of nanomaterials that promise to bridge the gap between model and practical electrocatalysts. The atomically stepped surfaces of THH Pt NCs are extremely active for the electrooxidation of small organic molecules but they also ...
Anres Philippe - - 2012
The aim of this work was to clarify the mechanism taking place in field enhanced sample injection coupled to sweeping and micellar electrokinetic chromatography (FESI-Sweep-MEKC), with the utilization of two acidic high conductivity buffers (HCB), phosphoric acid or sodium phosphate buffer, in view of maximizing sensitivity enhancements. Using cationic model ...
Fan Xiangqun - - 2012
The Fenton-like degradation of nalidixic acid was studied in this work. The effects of Fe(3+) concentration and initial H(2)O(2) concentration were investigated. Increasing the initial H(2)O(2) concentration enhances the degradation and mineralization efficiency for nalidixic acid, while Fe(3+) shows an optimal concentration of 0.25 mM. A complete removal of nalidixic acid ...
Wang Mingchun - - 2013
The peduncles of Hovenia dulcis, containing abundant nutrients and having a taste like a combination of raisin, clove, cinnamon and sugar, have been consumed as fruits and used as traditional herbal medicine for a long time in China. Up to date, little information is available about the polysaccharides from peduncles ...
Choi Youngbo - - 2012
The development of solid acid catalysts that contain a high density of Brønsted acid sites with suitable acidity, as well as a long lifetime, is one of great challenges for the efficient dehydration of glycerol to acrolein. Herein, we report on a mesoporous siliconiobium phosphate (NbPSi-0.5) composite, which is a ...
Feng Gang - - 2012
The dimer of acrylic acid can exist in two forms, depending on the entgegen or zusammen orientations of the two allyl groups. The latter one (zusammen) has a permanent value of the μb dipole moment component, which allowed measuring its pulsed jet Fourier transform microwave (MW) spectrum. From the tunnelling ...
Park Jong Suk - - 2012
OBJECTIVES: Cardiovascular disease (CVD) is a leading cause of death in postmenopausal women. Elevated serum uric acid levels, hypoadiponectinemia and arterial stiffness are strongly associated with cardiovascular diseases. We investigated the relationships among uric acid, adiponectin and arterial stiffness in postmenopausal women. STUDY DESIGN: 9555 subjects who had the routine ...
Roy Debleena - - 2012
In the present investigation an attempt has been made to enhance rosmarinic acid level in plants, grown in vitro, of 2 species of Mentha in presence of 2 precursors in the nutrient media during culture. For in vitro culture establishment and shoot bud multiplication, MS basal media were used supplemented ...
Tsuzuki Wakako - - 2012
GC with a capillary column (60-100 m length) is widely used to measure trans fatty acids in dietary fats and biological tissues. Recently, we have occasionally observed that isothermal operation of an SP-2560 column at 180 degrees C results in incomplete separation of gondoic acid (11c-20:1) and one of the ...
Stephany Olivier - - 2012
Original mixed selectors were synthesized by coupling a single l-valine diamide moiety on permethylated β-cyclodextrin. The structures of the new selectors were designed to limit the interactions between the l-valine derivative and cyclodextrin by removing the amino acid moiety from the cyclodextrin cavity by means of an amide linkage on ...
Goertz Ole - - 2012
BACKGROUND: The breakdown of skin microcirculation plays a key role in the pathophysiology of chemical burns. Available data for alkali and acid injuries are rare. To determine the pathophysiological similarities and differences, two comparable in vivo acid and alkali burn models were developed. MATERIALS AND METHODS: Deep partial-thickness acid burns (32% ...
Ali Abbas - - 2012
In this study we evaluated the biting deterrent effects of a series of saturated and unsaturated fatty acids against Aedes aegypti (L), yellow fever mosquito (Diptera: Culicidae) using the K & Dbioassay module system. Saturated (C6:0 to C16:0 and C18:0) and unsaturated fatty acids (C11:1 to C14:1, C16:1, C18:1, and ...
Eissa Shimaa - - 2012
A novel graphene-based voltammetric immunosensor for sensitive detection of okadaic acid (OA) was developed. A simple and efficient electrografting method was utilized to functionalize graphene-modified screen-printed carbon electrodes (GSPE) by the electrochemical reduction of in situ generated 4-carboxyphenyl diazonium salt in acidic aqueous solution. Next, the okadaic acid antibody was ...
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