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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 ...
Beichel Witali W Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany); Freiburger Materialforschungszentrum (FMF), Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg im Breisgau (Germany); Current address: Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe - - 2014
The easily accessible hexafluoroisopropoxysulfuric acid (1, hfipOSO3 H; hfip=C(H)(CF3 )2 ) was synthesized by the reaction of hexafluoroisopropanol and chlorosulfonic acid on the kilogram scale and isolated in 98 % yield. The calculated gas-phase acidity (GA) value of 1 is 58 kJ mol(-1) lower in ΔG° than that of sulfuric acid (GA ...
Tai Chih-Yin - - 2014
In cases of dehydration exceeding a 2% loss of body weight, athletic performance can be significantly compromised. Carbohydrate and/or electrolyte containing beverages have been effective for rehydration and recovery of performance, yet amino acid containing beverages remain unexamined. Therefore, the purpose of this study is to compare the rehydration capabilities ...
Santos C A CA LNEG I.P., U. Bioenergia, ed. F, Estrada do Paço do Lumiar, 22, 1649-038 Lisbon, - - 2014
Chlorella protothecoides, a lipid-producing microalga, was grown heterotrophically and autotrophically in separate reactors, the off-gases exiting the former being used to aerate the latter. Autotrophic biomass productivity with the two-reactor association, 0.0249gL(-1)h(-1), was 2.2-fold the value obtained in a control autotrophic culture, aerated with ambient air. Fatty acid productivity was ...
Crépin Damien F P - - 2014
Significant rate enhancements in the Diels-Alder reaction of alkynes and 2-pyrones bearing a Lewis basic group are observed when a combination of alkynyltrifluoroborates and BF3.OEt2 are used. This process generates functionalized aromatic compounds with complete regiocontrol. The origin of the observed rate enhancement has been studied by DFT methods, and ...
Sang Li-Jia - - 2014
Discrimination of glycoproteins with different glycans is a significant but difficult issue. We presented here a new strategy for strengthening the discriminating of glycoproteins by introducing a new signaling channel, fluorescence polarization (FP), into a "the single probe with three signaling channels" sensor array. The single probe was aminophenylboronic acid ...
Yan Jin-Wu JW School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China. tanjiah@mail.sysu.edu.cn - - 2014
A tailor-made colorimetric and red-emitting fluorescent dual probe for G-quadruplex nucleic acids was developed by incorporating a coumarin-hemicyanine fluorophore into an isaindigotone framework. The significant and distinct changes in both the color and fluorescence of this probe enable the label-free and visual detection of G-quadruplex structures.
Zhang Xin X Department of Chemistry, Shanghai University, Shanghai 200444, PR - - 2014
A glassy carbon electrode modified with poly(alizarin red)/electrodeposited graphene (PAR/EGR) composite film was prepared and applied to detect ciprofloxacin (CPFX) in the presence of ascorbic, uric acid and dopamine. The morphology and interface property of PAR/EGR films were examined by scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS). The ...
Sammaiah Arukali A Centre for Lipid Research, CSIR-Indian Institute of Chemical - - 2014
Vegetable oils are being investigated as potential source of environmentally favorable lubricants over synthetic products. Jatropha curcas L. oil (JO) identified as a potential raw material for biodiesel was explored for its use as a feedstock for biolubricants. Epoxidized jatropha oil (EJO) was prepared by peroxyformic acid generated in situ ...
Wang Nanxi - - 2014
By using a directed evolution approach, we have identified aminoacyl-tRNA synthetase variants with significantly enhanced activity for the incorporation of unnatural amino acids into proteins in response to the amber nonsense codon in bacteria. We demonstrated that the optimization of anticodon recognition of tRNA by aminoacyl-tRNA synthetase led to improved ...
Xu Li L Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China. - - 2014
We designed and synthesized a new amino-functionalized tetraphenylethene (TPE) derivative as a highly sensitive dye for the detection of dsDNA and oligonucleotide in both solution and a gel matrix. We further revealed that the cis configuration dye showed a much higher sensitivity than its trans isomer for the first time.
Ellis Joshua T JT Utah State University, Department of Biological Engineering, 4105 Old Main Hill, Logan, UT 84322-4105, - - 2014
We demonstrated the production of hydrogen, ethanol, and a variety of acids by several Clostridium species using cheese whey as substrate. These species were isolated from the anaerobic sediments of a municipal wastewater stabilization pond. Eight isolates were obtained and all were classified taxonomically as Clostridium spp. based on 16S ...
Maharaj K K Department of Chemical Engineering, University of Pretoria, Lynnwood Road, Private Bag X20, Hatfield, 0002, Pretoria, South Africa, - - 2014
Continuous anaerobic fermentations were performed in a biofilm reactor packed with Poraver® beads. Dilution rates (D) varied between 0.054 and 0.72 h(-1), and D-glucose and CO2 gas were used as carbon substrates. Steady-state conditions were shown to be repeatable and independent of the operational history. Production stability was achieved over periods ...
Radacsi Norbert N Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The - - 2014
Evaporative crystallization is widely applied in several industrial processes, including the pharmaceutical industry. Microwave irradiation can significantly speed up solvent evaporation in these crystallization processes, resulting in reduced particle size due to rapid crystallization. A single-mode microwave setup was used for evaporative crystallization of the model active pharmaceutical ingredient, niflumic ...
Jabeur Hazem - - 2014
Fatty acids composition as an indicator of purity suggests that linolenic acid content could be used as a parameter for the detection of extra/virgin olive oil fraud with 5% of soybean oil. The adulteration could also be detected by the increase of the trans-fatty acid contents with 3% of soybean ...
Cambon Emmanuelle E Université de Toulouse; INSA,UPS,INP; LISBP, 135 Avenue de Rangueil, F-31077, Toulouse, France; CNRS, UMR5504, F-31400, Toulouse, France; INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-31400, Toulouse, - - 2014
Amylosucrase from Neisseria polysaccharea is a remarkable transglucosylase that synthesizes an insoluble amylose-like polymer from sole substrate sucrose. One particular amino acid, Arg226, was proposed from molecular modeling studies to play an important role in the formation of the active site topology and in the accessibility of ligands to the ...
Wang Shuye S School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of - - 2014
A new member of the family of methoxylalkylamino monosubstituted β-cyclodextrins, mono-6(A) -(4-methoxybutylamino)-6(A) -β-CD, has been developed as a chiral selector for enantioseparation in capillary electrophoresis. This amino cyclodextrin exhibited good enantioselectivities for 16 model acidic racemates including three dansyl amino acids at an optimum pH of 6.0. Excellent chiral resolutions ...
Qiao Zhi-Jun ZJ Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, PR - - 2014
Two kinds of hierarchical porous carbons (HPCs) with specific surface areas of 2000m(2)g(-1) were synthesized using leonardite humic acids (LHA) or biotechnology humic acids (BHA) precursors via a KOH activation process. Humic acids have a high content of oxygen-containing groups which enabled them to dissolve in aqueous KOH and facilitated ...
Zhang Liming L Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, - - 2014
To improve ethanol productivity with few inhibitors generated, a novel process of combined alkaline peroxide (AP) pretreatment and semi-simultaneous saccharification and fermentation (SSSF) was developed in this work. Pretreatment with 10% ( [Formula: see text] ) H2O2 at 160°C for 2h followed by SSSF was found to be the optimal ...
Van Pelt D W DW Substrate Metabolism Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, - - 2014
Background:Although obesity is commonly linked with metabolic disease risk, some obese adults do not develop metabolic abnormalities, such as insulin resistance.Objectives:The primary aim of this study was to determine whether alterations in fatty acid mobilization and uptake underlie differences in insulin sensitivity (Si) among a seemingly homogeneous cohort of obese ...
Szabo Steven T ST Durham Veterans Affairs Medical Center and VA Mid-Atlantic MIRECC, 508 Fulton Street, Mental Health Service Line (116A), Durham, NC - - 2014
Veteran populations are exposed to multiple stressful events, and suicidality among veterans is a serious problem. Identifying biomarkers of suicidality may enhance detection, prevention, and treatment. Multiple neurotransmitter systems are implicated in the neurobiology of suicidality, including amino acid neurotransmitter systems. Amino acids as biomarker candidates for suicidality were quantified ...
Ruckenstuhl Christoph C Institute for Molecular Biosciences, University of Graz, Graz, - - 2014
Reduced supply of the amino acid methionine increases longevity across species through an as yet elusive mechanism. Here, we report that methionine restriction (MetR) extends yeast chronological lifespan in an autophagy-dependent manner. Single deletion of several genes essential for autophagy (ATG5, ATG7 or ATG8) fully abolished the longevity-enhancing capacity of ...
Yi Xin X Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China ; Cardiovascular Research Institute of Wuhan University, Wuhan, Hubei 430060, P.R. - - 2014
The aim of the present study was to conduct an updated meta-analysis of relevant randomized controlled trials (RCTs) in order to estimate the effect of folic acid supplementation on endothelial function and the concentration of plasma homocysteine in patients with coronary artery disease (CAD). An extensive search of PubMed was ...
Essawy Amr A AA Chemistry Department, Faculty of Science, Fayoum University, 63514 Fayoum, - - 2014
The complexes of Sm(III) and Tb(III) with 2-aminobenzoic acid (anthranilic acid, AA) and 2-amino-5-chlorobenzoic acid (5-chloroanthranilic acid, AACl) were synthesized and characterized based on elemental analysis, IR and mass spectroscopy. The data are in accordance with 1:3 [Metal]:[Ligand] ratio. On the basis of the IR analysis, it was found that ...
Munro Daniel D Department of Biology, Université du Québec à Rimouski, Campus de Rimouski, 300, allée des Ursulines, C. p. 3300, succ. A, Rimouski, Québec G5L 3A1, Canada. - - 2014
The susceptibility of membrane lipids to peroxidation (peroxidation index [PI]) increases with the double bond content of fatty acids and is inversely correlated to longevity in mammals, birds, and bivalve molluscs. In molluscs, membrane polyunsaturated fatty acids content can be affected by temperature, nutrition, and the individual's age. In this ...
Chen Chi C School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, HUBEI 430074, People's Republic of China. - - 2014
The adsorption of several acidic gases (CO2, NO2 and SO2) on light metal (Li, Al) decorated graphene oxide (GO) is theoretically studied, based on the first-principles calculations. Configuration relaxation, binding energy and charge transfer are carried out to discuss the acidic gas adsorption ability of light metal decorated GO. It ...
Chen Liwei L School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore, - - 2014
Production of biofuels derived from microbial fatty acids has attracted great attention in recent years owing to their potential to replace petroleum-derived fuels. To be cost competitive with current petroleum fuel, flux toward the direct precursor fatty acids needs to be enhanced to approach high yields. Herein, fatty acyl-CoA metabolism ...
Han Gyeo-Re GR Department of Chemistry, Gachon University, Seongnam-Si, Gyeonggi-Do 461-701, - - 2014
Herein, we demonstrated a simple, sensitive, and rapid label-free detection method for heavy-metal (HM) ions using liquid crystal (LC) droplet patterns on a solid surface. Stearic-acid-doped LC droplet patterns were spontaneously generated on an n-octyltrichlorosilane (OTS)-treated glass substrate by evaporating a solution of the nematic LC, 4-cyano-4'-pentylbiphenyl (5CB), dissolved in ...
An Jieun J Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, - - 2014
Screening a library of overexpressing mutant alleles of the TATA-binding gene SPT15 yielded two Saccharomyces cerevisiae strains (MRRC 3252 and 3253) with enhanced tolerance to acetic acid. They were also tolerant to propionic acid and hydrogen peroxide. Transcriptome profile analysis identified 58 upregulated genes and 106 downregulated genes in MRRC ...
Wang Wen W Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China. xieqj@hunnu.edu.cn - - 2014
We report a new and efficient protocol for rapid electrodeposition of a gold-Prussian blue ((Au-PB)REd) nanocomposite with ultrahigh electroactivity on an Au electrode by cyclic voltammetry in 0.1 M aqueous K2SO4 containing 1 mM K3Fe(CN)6, 1 mM HAuCl4, and 0.1 mM Fe2(SO4)3, and an electrochemical quartz crystal microbalance and scanning ...
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