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Gao Bifen - - 2014
Anatase TiO2 microspheres with a high percentage of exposed (001) facets were synthesized by a template-free hydrothermal method without using concentrated hydrofluoric acid. The influence of various experiment conditions, such as hydrothermal temperature, acid condition, reaction time, etc., on the morphology of the final products was investigated in detail. The ...
Tiboni Marcela M Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, PR, 80210-170, - - 2014
Ligno(hemi)cellulosics (L(h)Cs) as sugarcane bagasse and loblolly pine sawdust are currently being used to produce biofuels such as bioethanol and biobutanol through fermentation of free sugars that are often obtained enzymatically. However, this bioconversion requires a pretreatment to solubilize the hemicellulose fractions, thus facilitating the action of the cellulolytic enzymes. ...
Neerathilingam Muniasamy M Institute of Molecular Medicine, The University of Texas Health Sciences Centre at Houston, 1825 Pressler Street, Houston, TX 77030, U.S.A; Centre for Cellular and Molecular Platforms, NCBS-TIFR, GKVK Post, Bellary Road, Bangalore 560065, India. Electronic address: - - 2014
Inclusion bodies (IBs) are commonly formed in E.coli during over expression of recombinant proteins in non-native state. Isolation, denaturation and refolding of these IBs is generally practiced to obtain functional protein. However, along this process IBs tend to form non-specific interactions with sheared nucleic acids from the genome, thus getting ...
Pradhan Tuhin T Department of Chemistry, Korea University, Seoul 130-701, Korea. - - 2014
In the past few decades, the development of chemosensors for neurotransmitters has emerged as a research area of significant importance, which attracted a tremendous amount of attention due to its high sensitivity and rapid response. This current review focuses on various neurotransmitter detection based on fluorescent or colorimetric spectrophotometry published ...
Napora-Wijata Kamila K ACIB GmbH, Graz, - - 2014
An increasing demand for non-petroleum-based products is envisaged in the near future. Carboxylic acids such as citric acid, succinic acid, fatty acids, and many others are available in abundance from renewable resources and they could serve as economic precursors for bio-based products such as polymers, aldehyde building blocks, and alcohols. ...
Yang Chen - - 2014
The pKa values of a series of chiral Bronsted acids, including N-triflylphosphoramides, bis(sulfonyl)imides, bis(sulfuryl)imides, dicarboxylic acids, sulfonic acids, and N-phosphinyl phosphoramides, were predicted by using the SMD/M06-2x/6-311++G(2df,2p)//B3LYP/6-31+G(d) method in DMSO. The results revealed that the calculated pKa values were from -9.06 to 12.18 for different type acids. By using the ...
Erb William W Laboratoire de Chimie Moleculaire et Thio-organique, ENSICAEN, Universite de Caen, 6 boulevard du Marechal Juin, 14050 Caen - - 2014
An unprecedented spontaneous reactivity between diazonium salts and diboronic acid has been unveiled, leading to a versatile arylboronic acid synthesis directly from (hetero)arylamines. This fast reaction (35 min overall) tolerates a wide range of functional groups and is carried out under very mild conditions. The radical nature of the reaction mechanism ...
Guy Alexandre A Institut des Biomolécules Max Mousseron,UMR 5247 - CNRS - University Montpellier I and II - ENSCM, Faculty of Pharmacy, Montpellier (France), Fax: - - 2014
A wide variety of metabolic products of polyunsaturated fatty acids is of paramount importance for improving our medical knowledge in the field of oxidized lipids. Two novel metabolites of n-3 polyunsaturated fatty acids, 8-F3t -IsoP and 10-F4t -NeuroP as well as a deuterated derivative thereof were synthesized based on an ...
Pinheiro Vitor B VB MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, - - 2014
Nucleic acids display remarkable properties beyond information storage and propagation. The well-understood base pairing rules have enabled nucleic acids to be assembled into nanostructures of ever increasing complexity. Although nanostructures can be constructed using other building blocks, including peptides and lipids, it is the capacity to evolve that sets nucleic ...
Shimizu Tomoaki - - 2014
The aza-Clasen rearrangement of N-aryl-2-vinylazetidines has been explored. N-aryl-2-vinylazetidines were transformed to corresponding tetrahydrobenzazocines in good yields. Unexpectedly, the tetrahydrobenzazocine was unstable and readily isomerized to vinyltetrahydroquinoline in the presence of acid. The mechanism of this ring contraction was studied in detail.
Tkaczewska Joanna J Department of Animal Product Technology, Faculty of Food Technology, University of Agriculture, Krakow, - - 2014
Although environmental factors greatly affect the quality of carp meat, no regulations impose labelling the cultivation place of freshwater fish. That is why the purpose of this study was to determine the quality of carp meat cultivated in several regions of Poland as well as assess the necessity of implementing ...
Chia Xinyi X Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore - - 2014
Halogenated sp(2) materials are of high interest owing to their important electronic and electrochemical properties. Although methods for graphite and graphene fluorination have been extensively researched, the fundamental electrochemical properties of fluorinated graphite are not well established. In this paper, the electrochemistry of three fluorographite materials of different carbon-to-fluorine ratio ...
Gupta Neil N Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, - - 2014
Background. Compounding pharmacies often prepare parenteral nutrition (PN) and must adhere to rigorous standards to avoid contamination of the sterile preparation. In March 2011, Serratia marcescens bloodstream infections (BSIs) were identified in five patients receiving PN from a single compounding pharmacy. An investigation was conducted to identify potential sources of contamination ...
Scheler Ott O Department of Biotechnology, IMCB, University of Tartu, Riia 23, Tartu 51010, - - 2014
There is a growing need for quick and reliable methods for microorganism detection and identification worldwide. Although traditional culture-based technologies are trustworthy and accurate at a relatively low cost, they are also time- and labor-consuming and are limited to culturable bacteria. Those weaknesses have created a necessity for alternative technologies ...
Brock Nelson L NL Institut für Organische Chemie, Hagenring 30, 38106 Braunschweig, Germany. - - 2014
The biosynthesis of tropodithietic acid was investigated using a combinatorial approach of feeding experiments, gene knockouts and bioinformatic analyses. The mechanism of sulfur introduction is distinct from known mechanisms in holomycin, thiomarinol A and gliotoxin biosynthesis.
Uttaro Antonio D AD Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina. Electronic address: - - 2014
As components of phospholipids and glycosylphosphatidylinositol anchors, fatty acids are responsible for forming the core of biological membranes and the correct localization of proteins within membranes. They also contribute to anchoring proteins by direct acylation of specific amino acids. Fatty acids can be used as energy sources and serve as ...
Chakraborty Saikat S National Centre for Biological Sciences, TIFR , GKVK Bellary Road, Bangalore, 560065 Karnataka, - - 2014
Conspectus The impact of nucleic acid nanotechnology in terms of transforming motifs from biology in synthetic and translational ways is widely appreciated. But it is also emerging that the thinking and vision behind nucleic acids as construction material has broader implications, not just in nanotechnology or even synthetic biology, but ...
Laghi Luca L Centre of Foodomics, Department of Agro-Food Science and Technology, University of Bologna, Bologna, - - 2014
Bacterial vaginosis (BV) is a common vaginal disorder characterized by the decrease of lactobacilli and overgrowth of Gardnerella vaginalis and resident anaerobic vaginal bacteria. In the present work the effects of rifaximin vaginal tablets on vaginal microbiota and metabolome of women affected by BV were investigated by combining quantitative PCR ...
Matsumoto Kazushige K School of Environmental Science and Engineering, Kochi University of Technology, Miyanokuchi, Tosayamada, Kami, Koch, - - 2014
An improved method, which is highly reproducible, was developed for the enantioseparation of racemic O-ethyl phenylphosphonothioic acid () with brucine by introducing seeding to a supersaturated solution of the diastereomeric salt mixture. The present method gave both diastereomeric salts in high yields with a diastereomeric ratio of >99.5:0.5 upon choosing ...
Masiewicz Paweł P Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, - - 2014
During infection of macrophages, Mycobacterium tuberculosis, the pathogen that causes tuberculosis, utilizes fatty acids as a major carbon source. However, little is known about the coordination of the central carbon metabolism of M. tuberculosis with its chromosomal replication, particularly during infection. A recently characterized transcription factor called PrpR is known ...
Chaplin Jason H JH Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University , 381 Royal Parade, Parkville, Victoria 3052, - - 2014
Reductive coupling of α,β-unsaturated acid chlorides A with alkynoyls B provides convergent access to Nazarov cyclization precursors, α-carboxy divinyl ketones C. Cyclization of C gives an intermediate oxyallyl cation intermediate D, which can be trapped with tethered arenes (Ar). The resultant products can be further cyclized through nucleophilic displacement of ...
Zou Xiang X College of Pharmaceutical Sciences, Southwest University, 2 Tian Sheng Road, Beibei, Chongqing, 400715, People's Republic of China, - - 2014
Polymalic acid (PMA) is a water-soluble polyester with many attractive properties for biomedical application. Its monomer L-malic acid is widely used in the food industry and also a potential C4 platform chemical. Cofactor and CO2 donor involved in the reductive routes were investigated for PMA production by Aureobasidium pullulans. Biotin ...
Shen Yiru Y Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, Jiangsu 225125, China. - - 2014
Ascites is a major problem for both human health and animal production, due to its association with high rates of morbidity and mortality, low efficiency of nutrient utilization, and permanent adverse effects on performance. Although it is one of the three major metabolic diseases in poultry production, the underlying mechanisms ...
Haitao Qu - - 2014
Abstract Existent nucleic acid isothermal detection techniques for clinical diseases are difficult to promote greatly due to limitations in such aspects as methodology, costs of detection, amplification efficiency and conditions for operation. Therefore, there is an urgent need for a new isothermal amplification method with the characteristics of high accuracy, ...
Sanikommu Suma - - 2014
Phosphate released from phytic acid can be used as a measure of phytase activity. However, most of the phosphate estimation methods have not examined the interference or interaction of phytic acid in the assay. In this article, we report the kinetics and influence of unreduced phytic acid on phosphate estimation ...
Qing Qing Q Department of Biochemical Engineering, College of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, 213164, - - 2014
Pretreatment of lignocellulosic materials is a prerequisite to facilitate the disruption of the natural recalcitrance of their carbohydrate-lignin shield and to allow enzymes to easily access the crystalline cellulose surfaces. Recently, pretreatment of ionic liquids (ILs) has been widely studied as a promising pretreatment technique; however, it is too expensive ...
Sridhar Y Y Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India. - - 2014
A flexible stereoselective approach to the common C1-C14 skeleton present in natural products of the pseudomonic acid family is described. The strategy has been extended and the total synthesis of pseudomonic acid methyl monate C was achieved. The key synthetic reactions utilized include Achmatowicz rearrangement, Johnson-Claisen rearrangement, Julia-Kocienski olefination, and ...
Fauvelle Vincent V Irstea, UR EABX, Laboratoire de Chimie des Eaux, 50 Avenue de Verdun, 33612, Cestas Cedex, - - 2014
This paper presents an optimization of the pharmaceutical Polar Organic Chemical Integrative Sampler (POCIS-200) under controlled laboratory conditions for the sampling of acidic (2,4-dichlorophenoxyacetic acid (2,4-D), acetochlor ethanesulfonic acid (ESA), acetochlor oxanilic acid, bentazon, dicamba, mesotrione, and metsulfuron) and polar (atrazine, diuron, and desisopropylatrazine) herbicides in water. Indeed, the conventional ...
Nano Adela A Laboratoire de Chimie Organique et Spectroscopies Avancées (ICPEES-LCOSA), UMR 7515 au CNRS, Ecole Européenne de Chimie, Polymères et Matériaux, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France. - - 2014
A new type of fluorescent pH indicator has been developed whereby two dissimilar amino-styryl units are attached to a boron dipyrromethene (Bodipy) dye. The photophysical properties of this hybrid dye, and its simpler counterparts bearing only a single amino-styryl residue, depend on the polarity of the surrounding medium. Of the ...
Wang Gang - - 2014
Previous studies have demonstrated altered metabolites in samples of Alzheimer's disease (AD) patients. However, the sample size from many of them is relatively small and the metabolites are relatively limited. Here we applied a comprehensive platforms using ultra performance liquid chromatography-time-of-flight mass spectrometry and gas chromatography-time-of-flight mass spectrometry to analyze ...
Shen Pengfei - - 2014
For the first time, non-enzymatic blood glucose sensing has been achieved by using fluorescent boronic acid modified carbon dots (C-dots) as the signal readout. The functionalized C-dots are fabricated by one-step hydrothermal carbonization, using phenylboronic acid as the sole precursor. Compared with conventional two-step fabrication of nanoparticle based sensors, the ...
Balakrishnan Madhesan M Energy Biosciences Institute, Department of Chemical and Biomolecular Engineering, University of California at Berkeley, CA 94720 - - 2014
The Front Cover highlights the work of Prof. Alexis T. Bell and co-workers at the University of California at Berkeley. The Cover picture shows the value of using silica-supported alkyl sulfonic acid catalysts for the sustainable production of diesel fuel from biomass. The Full Paper itself is available at10.1002/cssc.201300931.
Kur-Kowalska Karolina K Lodz University of Technology, Institute of General Food Chemistry, Stefanowskiego 4/10, 90-924 Lodz, - - 2014
Preliminary results of a study of the interaction between 3-amino phenylboronic acid and glucose or ZnS:Cu quantum dots are presented in this paper. ZnS:Cu quantum dots with mercaptopropionic acid as a capping agent were obtained and characterized. Quenching of 3-amino phenylboronic acid fluorescence was studied by steady-state and timeresolved measurements. ...
Zunk Matthew M Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland 4222, Australia. - - 2014
The pseudaminic acids are a family of 5,7-diamino-3,5,7,9-tetradeoxynonulosonic acids that are essential components of bacterial polysaccharides and glycoproteins. This paper describes our approach towards the synthesis of analogues of pseudaminic acid, and involves the efficient introduction of the requisite nitrogen functionalities from a readily available precursor.
Cabanes Juana - - 2014
Betalains are plant pigments with high antioxidant and cancer chemopreventive properties used by the food industry as safe colorants. Betalains are restricted to species of the order Caryophyllales and difficulty in obtaining individual molecules has limited their structural identification and application. This study was designed to develop a betalamic acid-derivatized ...
Kwantes Jonathan M JM Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, Florida, - - 2014
ABSTRACT In the last few years there has been a noticeable increase in both the promotion and research of krill oil for its purported health benefits, including the management and treatment of conditions, such as hyperlipidemia, inflammation, and arthritis. Additionally, because krill oil contains the same omega-3 fatty acids eicosapentaenoic ...
Han Da D Center for Research at Bio/nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL (USA), Fax: - - 2014
Researchers increasingly visualize a significant role for artificial biochemical logical systems in biological engineering, much like digital logic circuits in electrical engineering. Those logical systems could be utilized as a type of servomechanism to control nanodevices in vitro, monitor chemical reactions in situ, or regulate gene expression in vivo. Nucleic ...
Tedone Laura L Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute, Università degli Studi di Messina, Viale Annunziata, 98168, Messina, - - 2014
Ruta chalepensis L. (Rutaceae) is widespread in the Mediterranean area. This plant has a solid tradition in ethnomedicine because of its various biological activities. Based on previous reports, the main volatile constituents of R. chalepensis are 2-undecanone and 2-nonanone, but most are still unknown, particularly fatty acid composition. To exhaustively ...
Lovelock Sarah L SL School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M1 7DN - - 2014
Phenylalanine ammonia lyases (PALs) belong to a family of 4-methylideneimidazole-5-one (MIO) cofactor dependent enzymes which are responsible for the conversion of L-phenylalanine into trans-cinnamic acid in eukaryotic and prokaryotic organisms. Under conditions of high ammonia concentration, this deamination reaction is reversible and hence there is considerable interest in the development ...
Seiple Ian B IB Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138 - - 2014
β-Hydroxy-α-amino acids figure prominently as chiral building blocks in chemical synthesis and serve as precursors to numerous important medicines. Reported herein is a method for the synthesis of β-hydroxy-α-amino acid derivatives by aldolization of pseudoephenamine glycinamide, which can be prepared from pseudoephenamine in a one-flask protocol. Enolization of (R,R)- or ...
Nygård Yvonne Y VTT Technical Research Centre of Finland, Espoo, - - 2014
Resistance to weak organic acids is important relative to both weak organic acid preservatives and development of inhibitor tolerant yeast as industrial production organisms. The ABC transporter Pdr12 is important for resistance to sorbic and propionic acid, but its role in tolerance to other weak organic acids with industrial relevance ...
Eguchi Kosei K Department of Cardiovascular Medicine, The University of - - 2014
The epidemic growth in the prevalence of obesity has made the impact of metabolic syndrome on cardiovascular events increasingly significant. Elevated visceral adiposity, the indispensable component of metabolic syndrome, is thought to play a primary role in the increasing incidence of cardiometabolic disorders. Importantly, obesity is not merely the simple ...
Yu Zhi-Rui ZR Department of Occupational and Environmental Health, Tianjin Medical University, Tianjin, 300070, China, - - 2014
Metabolic syndrome (MetS) is a serious threat to public health worldwide with an increased risk of developing type 2 diabetes, cardiovascular diseases and all-cause morbidity and mortality. In this study, a urinary metabolomic approach was performed on high performance liquid chromatography quadrupole time-of-flight mass spectrometry to discriminate 36 male MetS ...
Lee L K LK Department of Paediatrics and Adolescent Medicine, Caritas Medical Centre, Shamshuipo, Hong - - 2014
A 15-year-old Chinese male with infantile-onset hypotonia, developmental delay, ptosis, and oculogyric episodes presented with a history of chronic diarrhoea since the age of 5 years. At presentation, he had an exacerbation of diarrhoeal symptoms resulting in dehydration and malnutrition with a concurrent severe chest infection. In view of his ...
Vleggaar Danny - - 2014
Poly-L-lactic acid (PLLA) was first approved for soft tissue augmentation in Europe in 1999 for the cosmetic correction of scars and wrinkles. Due, in part, to inadequate usage recommendations that included those related to product reconstitution and hydration, injection sites, techniques, and timing, and patient selection, PLLA use was initially ...
Burstein Sumner H SH Department of Biochemistry and Molecular Pharmacology, The University of Massachusetts Medical School, Worcester, MA 01605, USA. Electronic address: - - 2014
The cannabinoid acids are a structurally heterogeneous group of compounds some of which are endogenous molecules and others that are metabolites of phytocannabinoids. The prototypic endogenous substance is N-arachidonoyl glycine (NAgly) that is closely related in structure to the cannabinoid agonist anandamide. The most studied phytocannabinoid is Δ(9)-THC-11-oic acid, the ...
Ramesh B N BN Department of Agricultural Biotechnology, Agricultural College, Karekere, Hassan, University of Agricultural Sciences (B), Mysore, Karnataka, - - 2014
Amyloidosis, oxidative stress and inflammation have been strongly implicated in neurodegenerative disorders like Alzheimer's disease. Traditionally, Caesalpinia crista and Centella asiatica leaf extracts are used to treat brain related diseases in India. C. crista is used as a mental relaxant drink as well as to treat inflammatory diseases, whereas C. ...
Michael Botros R BR a Department of Pharmacognosy , Faculty of Pharmacy, Mansoura University (MU) , Mansoura 35516 , - - 2014
A phytochemical investigation on the 5-lipoxygenase (5-LOX) inhibitory methanolic extract of Rudbeckia hirta L. flowers yielded 10 phenolic metabolites, including three phenolic acids, two phenolic acid esters, four flavonol glycosides and a trimethylated flavonol. The structures of the isolated metabolites were determined on the basis of spectroscopic analyses and by ...
Mioni Roberto R Division of Nephrology, Civil and University Hospital, Santa Maria della Misericordia , Udine , - - 2014
Titratable Acidity (TA) in urine can be measured directly or calculated from actual and reference pH, by using the pKa2 6,8 for phosphate. In urine, H2PO4(-) represents the excretion of filtered H2PO4(-), filtrated HPO4(2-) being completely reabsorbed by the proximal tubule (the Van Slyke approach). Since excretion of H2PO4(-) frequently ...
Yang Xiaoyu X Department of Chemistry, University of California , Berkeley, California 94720, United States - - 2014
We report a study involving the successful merger of two separate chiral catalytic cycles: a chiral anion phase-transfer catalysis cycle to activate Selectfluor and an enamine activation cycle, using a protected amino acid as organocatalyst. We have demonstrated the viability of this approach with the direct asymmetric fluorination of α-substituted ...
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