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Kanchana P P Department of Bioelectronics and Biosensors, Alagappa University, 630003 Karaikudi, Tamilnadu, - - 2014
Hydroxyapatite nanoparticles have been synthesized using EDTA as organic modifier by a simple microwave irradiation method and its application for the selective determination of uric acid (UA) has been demonstrated. Electrochemical behavior of uric acid at HA nanoparticle modified glassy carbon electrode (E-HA/GCE) has been investigated by electrochemical impedance spectroscopy ...
Kuo Chao-Yin - - 2014
In this study, TiO2/zeolite (TZ)-based composite was utilized to degrade bisphenol A (BPA) under ultraviolet (UV) irradiation. The effects of the TiO2 and Cu2O doses in TZ and Cu2O/TiO2/zeolite (CTZ) on the rate of BPA removal were identified, respectively. The surface area of TZ declined as the TiO2 loading increased. ...
Anaya Susana - - 2014
High performance polysulfone/γ-alumina biocompatible nanocomposites are reported for the first time and the effects of γ-alumina surface modification are explored. We show that some fatty acids chemisorb over the surface of γ-alumina forming nano-sized self-assembled structures. These structures present thermal transitions at high temperatures, 100 ºC higher than the melting ...
Arora Kashima K Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India. - - 2014
The development of a noninvasive test for uric acid has been the holy grail of uric acid detection research over the last decade. In the present work, a novel matrix comprising of a NiO thin film (a biocompatible material) loaded with Ni microdiscs was prepared on an ITO-coated glass substrate ...
Yu Xiaowen X Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. - - 2014
Electrochemical detection of dopamine plays an important role in medical diagnosis. In this paper, we report a three-dimensional (3D) interpenetrating graphene electrode fabricated by electrochemical reduction of graphene oxide for selective detection of dopamine. This electrochemically reduced graphene oxide (ErGO) electrode was used directly without further functionalization or blending with ...
Yoshiyama Yoko Y Research Division of Microbial Sciences, Kyoto University, Kitashirakawa Oiwake-Cho, Sakyo-ku, Kyoto 606-8502, - - 2014
Trehalose confers protection against various environmental stresses on yeast cells. In this study, trehalase gene deletion mutants that accumulate trehalose at high levels showed significant stress tolerance to acetic acid. The enhancement of trehalose accumulation can thus be considered a target in the breeding of acetic acid-tolerant yeast strains.
Taylor Jonathan C JC Nuclear Medicine Department, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield, - - 2014
Measurements of SeHCAT (tauroselcholic [75selenium] acid) retention have been used to diagnose bile acid malabsorption for a number of years. In current UK practice the vast majority of centres calculate uptake using an uncollimated gamma camera. Because of ever-increasing demands on gamma camera time, a new 'probe' detector was designed, ...
Maiyalagan Thandavarayan - - 2014
Supported tungsten carbide is an efficient and vital nanomaterial for the development of high performance, sensitive and selective electrochemical sensors. In this work, tungsten carbide with tube-like nanostructures (WC NTs) supported platinum nanoparticles (PtNPs) are synthesized and explored as an efficient catalyst towards electrochemical oxidation of oxalic acid for the ...
Subramanian Palaniappan P Institut de Recherche Interdisciplinaire (IRI), CNRS USR 3078, Université Lille1, Parc de la Haute Borne, 50 avenue de Halley, BP 70478, 59658 Villeneuve d'Ascq, France. - - 2014
Coating boron-doped diamond nanowires (BDD NWs) with a conducting polymer, poly[3-(pyrrolyl)carboxylic acid], has been reported. Polymer coating was achieved through electropolymerization of 3-(pyrrolyl)carboxylic acid at the electrode interface by amperometrically biasing the BDD NWs interface until a predefined charge has passed. The poly[3-(pyrrolyl)carboxylic acid] modified BDD NWs (PPA-BDD NWs) were ...
Biswas Mrinmoy M Polymer Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India. - - 2014
The thermal phase behaviors of a series of newly designed 1-alkyl-3-methylimidazolium ionic liquids (ILs) of different chain length fatty acid carboxylate anions are investigated. The length of the alkyl chain of the carboxylate anion in IL influences the phase transition temperature of their crystalline solid phase and the mesophase stability. ...
Ye Sujuan S College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China. - - 2014
A novel surface-enhanced Raman scattering (SERS) detection system is developed for proteins and nucleic acids based on a triple-helix molecular switch for multiple cycle signal amplification, achieving high sensitivity, universality, rapid analysis, and high selectivity.
Kamimura Akio A Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231. - - 2014
An efficient transformation of polyamides to ω-hydroxy alkanoic acids was achieved. Treatment of nylon-12 with supercritical MeOH in the presence of glycolic acid gave methyl ω-hydroxydodecanoate in 85 % yield and the alcohol/alkene selectivity in the product was enhanced to up to 9.5:1. The use of (18) O-enriched acetic acid for ...
Bielinski Elizabeth A - - 2014
Formic acid (FA) is an attractive compound for H2 storage. Currently, the most active catalysts for FA dehydrogenation use precious metals. Here, we report a homogeneous Fe catalyst that when used with a Lewis acid (LA) co-catalyst, gives approximately 1,000,000 turnovers for FA dehydrogenation. To date, this is the highest ...
Krol Elizaveta E LOEWE Center for Synthetic Microbiology, Department of Biology, Philipps-University Marburg, 35032 Marburg, - - 2014
Quorum sensing (QS) using N-acyl homoserine lactones (AHLs) as signal molecules is a common strategy used by diverse Gram-negative bacteria. A widespread mechanism of AHL sensing involves binding of these molecules by cytosolic LuxR-type transcriptional regulators, which requires uptake of external AHLs. The outer membrane is supposed to be an ...
Bayer Anton A Institut für Organische Chemie, Universität des Saarlandes, Im Stadtwald, Geb. C4.2, 66041 Saarbrücken (Germany), Fax: - - 2014
Chelated amino acid ester enolates are excellent nucleophiles for ruthenium-catalyzed allylic alkylations. Although [Cp*Ru(MeCN)3 ]PF6 was found to be the most reactive catalyst investigated, with the resulting allyl complexes reacting at temperatures as low as -78 °C, unfortunately the process took place with only moderate regio- and diastereoselectivity. In contrast, [(p-cymene)RuCl2 ...
Katayev Dmitry D FB Chemie-Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. Geb. 54, 67663 Kaiserslautern (Germany), Fax: - - 2014
Various (hetero)arenecarboxylic acids were converted to the corresponding Daugulis amides and nitrated selectively in the ortho-position in the presence of [CuNO3 (PPh3 )2 ] and AgNO2 at 50 °C. A microwave-assisted saponification allows regenerating the carboxylate group within minutes, which may then be removed tracelessly by protodecarboxylation, or substituted by aryl- ...
Wang Jin J School of Pharmaceutical Sciences, Hebei Medical University, Shijiazhuang 050017, P.R. - - 2014
A rapid and sensitive high-performance liquid chromatographic (HPLC) method was developed for the simultaneous separation and determination of chlorogenic acid, caffeic acid, alantolactone and isoalantolactone in Inula helenium. The HPLC separation was performed on an Elite Hypersil C18 column (200 × 4.6 mm i.d., 5 µm particle size) with a ...
Soriano-Maldonado Pablo P Departamento de Química y Física, Universidad de Almería, Campus de Excelencia Internacional Agroalimentario, CEIA3, Edificio CITE I, Carretera de Sacramento s/n., 04120 La Cañada de San Urbano, Almería, - - 2014
Taking advantage of the catalytic promiscuity of L-carbamoylase from Geobacillus stearothermophilus CECT43 (BsLcar) and N-succinyl-amino acid racemase from Geobacillus kaustophilus CECT4264 (GkNSAAR), we have evaluated the production of different optically pure L-α-amino acids starting from different racemic N-formyl- and N-carbamoyl-amino acids using a dynamic kinetic resolution approach. The enzymes were ...
Lin Yu Hong YH Laboratory of Membrane Biochemistry and Biophysics, NIAAA, NIH, Bethesda, MD, USA, - - 2014
A methodology combining finger-pricked blood sampling, microwave accelerated fatty acid assay, fast gas chromatography data acquisition, and automated data processing was developed, evaluated and applied to a population study. Finger-pricked blood was collected on filter paper previously impregnated with 0.05 mg of the antioxidant butylated hydroxytoluene and air-dried at room temperature. ...
Colon Marta - - 2014
Migration of green tea components from an active packaging material containing green tea extract was performed in water and 3% acetic acid in water. The migration values for acid simulant were much higher than the values obtained in water. The influence of the acidic media in solutions of catechins standards ...
Lavanya N N Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi-630 003, Tamilnadu, - - 2014
A novel folic acid biosensor has been fabricated using Cu doped SnO2 nanoparticles (NPs) synthesized by a simple microwave irradiation method. Powder XRD and TEM studies confirmed that both the pure and Cu doped SnO2 (Cu: 0, 10, 20wt%) crystallized in tetragonal rutile-type structure with spherical morphology. The average crystallite ...
Rasouli M M Department of Clinical Biochemistry, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Mazandaran, Iran. - - 2014
Phenol-sulfuric acid reagent is used to measure the concentration of glyco-polymers and -conjugates. There are several uncertainties on glycogen measurement in the tissues. We aimed to improve phenol-sulfuric reagent for microassay of glucose based-glycogen in small tube or microplate. The condition of the reaction was optimized and scaled down for ...
Sun Jiaduo J College of Biotechnology and Pharmaceutical Engineering, Nanjing Technology University, 30 Puzhu South Road, Nanjing, Jiangsu, 211816, - - 2014
To improve the production of D-lactic acid, atmospheric and room temperature plasma (ARTP) was used to generate mutations in Sporolactobacillus sp. Y2-8. An efficient mutant YBS1-5 was rapidly isolated by implanting ARTP twice with a 100 W radio-frequency power input, 10 standard liters per minute of the helium flow, and ...
Ma Lichao L State Key Laboratory of Grassland Agro-ecosystems, School of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, 730020, People's Republic of China, - - 2014
GDP-mannose 3', 5'-epimerase (GME) catalyses the conversion of GDP-D-mannose to GDP-L-galactose, an important step in the ascorbic acid (ascorbic acid) biosynthetic pathway in higher plants. In this study, a novel cDNA fragment (MsGME) encoding a GME protein was isolated and characterised from alfalfa (Medicago sativa). An expression analysis confirmed that ...
Tian Zhenlin Z State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, PR China. wpzhu@ecust.edu.cn - - 2014
A fluorescent probe () based on an unnatural amino acid (UAA) is developed for the detection of phenylalanine ammonia lyase (PAL). In the presence of PAL, is catalytically deaminated to ortho-amino-transcinnamic acid (o-a-CA), which shows a remarkable "off-on" fluorescence signal. Thus, the probe enables direct visualization of the PAL activity ...
Song Ye Y Key Laboratory of Soft Chemistry and Functional Materials of Education Ministry, Nanjing University of Science and Technology, Nanjing 210094, - - 2014
The electroactivity of polyaniline (PANI) can be solely retained in acidic media. However, the acidity requirement greatly limits its potential applications such as biosensors and anticorrosion, where neutral circumstances have to be faced. Herein, PANI is conformally loaded into anodic titanium oxide (ATO) nanotubes by electrodeposition. The prepared PANI-ATO hybrid ...
Akasaka Naoki N Institute of Applied Microbiology, Marukan Vinegar Co. Ltd., 5-6 Koyo-cho West, Higashinada-ku, Kobe, Hyogo 658-0033, - - 2014
Vinegar with increased amounts of branched-chain amino acids (BCAAs; valine, leucine and isoleucine) is favorable for human health as BCAAs decrease diet-induced obesity and hyperglycemia. To construct Gluconacetobacter europaeus which produces BCAAs, leucine responsive regulator (GeLrp) is focused and two Gelrp mutants were constructed. Wild-type KGMA0119 didn't produce significant amount ...
Dey Tapati Bhanja TB Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, - - 2014
Solid-state fermentation (SSF) at 30°C for 72 h with four Generally Recognized as Safe (GRAS) filamentous fungi (Aspergillus oryzae NCIM 1212, Aspergillus awamori MTCC No. 548, Rhizopus oligosporous NCIM 1215 and Rhizopus oryzae RCK2012) showed high efficiency for the improvement of water soluble total phenolic content (TPC) and antioxidant properties ...
Brayden David J DJ School of Veterinary Medicine, Veterinary Sciences Centre and Conway Institute, University College Dublin, Room 214 Belfield, Dublin 4, Ireland, - - 2014
10-undecylenic acid (UA) is an OTC antifungal therapy and a nutritional supplement. It is an unsaturated medium chain fatty acid (MCFA) derivative, so our hypothesis was that its 11-mer sodium salt, uC11, would improve intestinal permeation similar to the established enhancer, sodium caprate (C10), but without the toxicity of the ...
Suzuno Kohta - - 2014
This study demonstrates that the Marangoni flow in a channel network can solve maze problems such as exploring and visualizing the shortest path and finding all possible solutions in a parallel fashion. The Marangoni flow is generated by the pH gradient in a maze filled with an alkaline solution of ...
Dai Jun-Jun JJ Key Laboratory of Systems Bioengineering, Ministry of Education (Tianjin University), Tianjin 300072, People's Republic of China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of - - 2014
Cellular redox status and oxygen availability influence the product formation. Herein, decreasing agitation speed or adding vitamin C (Vc) achieved the 2,3-BDL yield of 0.40gg(-1) or 0.39gg(-1)glucose under batch fermentation, respectively. To our knowledge, this is the highest 2,3-BDL yield reported so far for Paenibacillus polymyxa without adding acetic acid. ...
Fretellier Nathalie N From Guerbet, Research Division, Roissy Charles de Gaulle Cedex, - - 2014
The purposes of this study were to evaluate the risk for analytical interference with gadolinium-based contrast agents (GBCAs) for the colorimetric measurement of serum iron (Fe) and to investigate the mechanisms involved. Rat serum was spiked with several concentrations of all molecular categories of GBCAs, ligands, or "free" soluble gadolinium ...
Barve Aabha A Department of Chemistry, Portland State University, Portland, Oregon 97207, USA. - - 2014
We report the detection of homocysteine over cysteine based upon characteristic differences between 5- and 6-membered heterocyclic amines formed upon reaction with aldehyde-bearing compounds. Homocysteine-derived thiazinane-4-carboxylic acids are more basic than cysteine-derived thiazolidines-4-carboxylic acids. Fluorescence enhancement in response to homocysteine is achieved by tuning pH and excitation wavelength.
Ismail Ku Syahidah Ku KS Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan; School of Bioprocess Engineering, Universiti Malaysia Perlis, Perlis, - - 2014
Lignocellulosic biomass is a potential substrate for ethanol production. However, pretreatment of lignocellulosic materials produces inhibitory compounds such as acetic acid, which negatively affect ethanol production by Saccharomyces cerevisiae. Supplementation of the medium with three metal ions (Zn(2+) , Mg(2+) and Ca(2+) ) increased the tolerance of S. cerevisiae towards ...
Aslan Emre E Selcuk University, Department of Chemistry, 42031, Konya (Turkey), Fax: - - 2014
Photocatalytic generation of hydrogen by using oleic acid-capped CdS, CdSe, and CdS0.75 Se0.25 alloy nanocrystals (quantum dots) has been investigated under visible-light irradiation by employing Na2 S and Na2 SO3 as hole scavengers. Highly photostable CdS0.75 Se0.25 alloy nanocrystals gave the highest hydrogen evolution rate (1466 μmol h(-1)  g(-1) ), which was ...
Pimsen Rungnapa R Program of Petrochemical and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Program of Chemistry, Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat 80280, - - 2014
Widespread use of dichlorvos in agriculture has posed serious concern for food and water contamination. A new colorimetric method for the detection of dichlorvos based on polydiacethylene and acetylcholinesterase inhibition is developed. The blue-to-red color transition of poly(10,12-pentacosadynoic acid) vesicles can be induced by myristoylcholine which is enzymatically hydrolyzed by ...
Xu Yingjie - - 2014
Regiodivergent parallel kinetic resolution of aziridines with malonates was achieved under dinuclear Schiff base catalysis. The regiodivergent reaction proceeded under catalyst-control irrespective of the substituents on the aziridines, and 2.5-10 mol % of a Y(OTf)3/La(OiPr)3/a dinucleating Schiff base = 1:1:1 mixture gave versatile γ-amino acid derivatives in 96->99.5% ee. Not ...
Zhang Jingfang J Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China. - - 2014
3D Pd-P nanoparticle networks (NNs) have been successfully synthesized using a facile one-step soft-template-assisted method. The as-prepared Pd-P NNs exhibit markedly improved activity and stability towards formic acid electrooxidation over Pd NNs, commercial Pd/C and Pd-P nanoparticle aggregates (NAs).
Gianico A A Water Research Institute, IRSA-CNR, Area della Ricerca RM1, Via Salaria km 29.300, 00015, Monterotondo, Rome, Italy, - - 2014
This study investigates for the first time, on laboratory scale, the possible application of an innovative enhanced stabilization process based on sequential mesophilic/thermophilic anaerobic digestion of waste-activated sludge, with low-energy sonication pretreatment. The first mesophilic digestion step was conducted at short hydraulic retention time (3-5 days), in order to favor ...
Koutsimanis Georgios G School of Packaging, Michigan State - - 2014
Current consumer demand for high-quality ready-to-eat fresh fruit in convenient bio-based packaging was met utilizing sanitized stem-free sweet cherries and a polylactic acid (PLA) cup with a PLA peelable microperforated lid. The newly developed packaging system was compared with the petroleum-based macroperforated bag currently used for retail. After 27 days ...
Holló Gábor - - 2014
AgI electrode is often applied not only to determine iodine concentration but also to follow oscillations in the weakly acidic medium of the Bray-Liebhafsky and Briggs-Rauscher reactions where it partly follows the hypoiodous acid (HOI) concentration. It is known that HOI attacks its matrix in the corrosion reaction: AgI + ...
Zheng Xiaoxin - - 2014
Biodegradable polymers used as vascular stent coatings and stent platforms encounter a major challenge: biocompatibility in vivo, which plays an important role in in-stent restenosis (ISR). Co-formulating amorphous calcium phosphate (ACP) into poly(lactic-co-glycolic acid) (PLGA) or poly-L-lactic acid (PLLA) was investigated to address the issue. For stent coating applications, metal ...
Xu Yuan Y State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, - - 2014
The mechanism of the thermal imidization of solid-state polyamic acid was studied using Fourier transform infrared (FT-IR) spectroscopy using the two-dimensional correlation spectroscopy method. It is assumed that two isomers exist in a polyamic acid segment: one is called the para-segment, which favors imidization reaction, the other is the meta-segment, ...
Zheng Zhaojuan Z College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of - - 2014
Xylose effective utilization is crucial for production of bulk chemicals from low-cost lignocellulosic substrates. In this study, an efficient L-lactate production process from xylose by a mutant Bacillus coagulans NL-CC-17 was demonstrated. The nutritional requirements for L-lactate production by B. coagulans NL-CC-17 were optimized statistically in shake flask fermentations. Corn ...
Monselise E B-I EB Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, - - 2014
Analysis with (15) N NMR revealed that alanine, a universal cellular stress signal, accumulates in etiolated duckweed plants exposed to 15-min pulsed UV light, but not in the absence of UV irradiation. The addition of 10 mm vitamin C, a radical scavenger, reduced alanine levels to zero, indicating the involvement of ...
Gräsvik John J Department of Chemistry, Imperial College London, London, SW7 2AZ, UK. - - 2014
Introduced here is a quick, simple, robust method to measure acidity in ionic liquid (IL) systems by the use of the NMR-probe mesityl oxide. Acidity corresponding to a Hammett acidity of -1 to -9 can be measured reliably using this technique, a range that vastly exceeds that of any single ...
Coban Hasan B HB Department of Agricultural and Biological Engineering, The Pennsylvania State University, University Park, PA, 16802, - - 2014
Alpha keto acids are deaminated forms of amino acids that have received significant attention as feed and food additives in the agriculture and medical industries. To date, their production has been commonly performed at shake-flask scale with low product concentrations. In this study, production of phenylpyruvic acid (PPA), which is ...
Lei Xuefei X Department of Environmental Engineering, School of Environment, Tsinghua University, Beijing 100084, - - 2014
A roast-leach method using CaCl2 and HNO3 to remove uranium and gross radioactivity in coal bottom ash was investigated. Heat treatment of the ash with 100% CaCl2 (900°C, 2h) significantly enhanced uranium leachability (>95%) compared with direct acid-leaching (22.6-25.5%). The removal efficiency of uranium and gross radioactivity increased steeply with ...
Wang Feng F National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR - - 2014
A highly efficient strategy for laccase production by Trametes versicolor was developed using corn steep liquor (CSL) as both a nitrogen source and a laccase inducer. At the optimal CSL concentration of 20gL(-1), an extracellular laccase activity of 633.3UL(-1) was produced after a culture period of only 5days. This represented ...
Lucas-Torres Covadonga C Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies (San Alberto Magno Building), University of Castilla-La Mancha, Av. Camilo José Cela, 10, 13071 Ciudad Real, - - 2014
The thermal degradation of olive oil using conventional and microwave heating under the same experimental conditions were compared. A powerful identification and quantification technique based on (31)P NMR has been developed to characterise the differences between the minor components including diacylglycerol and free fatty acids in the heated samples. The ...
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