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Kang Sunyoung S Department of Chemistry, College of Natural Sciences, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of - - 2014
We synthesized five maleic acid amide derivatives (maleic, citraconic, cis-aconitic, 2-(2'-carboxyethyl) maleic, 1-methyl-2-(2'-carboxyethyl) maleic acid amide), and compared their degradability for the future development of pH-sensitive biomaterials with tailored kinetics of the release of drugs, the change of charge density, and the degradation of scaffolds. The degradation kinetics was highly ...
Mahanandia Pitamber P Department of Physics, National Institute of Technology, Rourkela-560012, India. - - 2014
We demonstrate an electrochemical technique for the large scale synthesis of high quality few layer graphene sheets (FLGS) directly from graphite using oxalic acid (a weak acid) as the electrolyte. One of the interesting observations is that the FLGS are stable at least up to 800 °C and hence have ...
Dourado Erico R ER Instituto Federal de Educação, Ciência e Tecnologia, IFRJ, Lúcio Tavares, Rio de Janeiro, - - 2014
Samples of unmodified and modified asphalt binders containing 1% polyphosphoric acid were studied. Fourier-transform infrared spectroscopy was used to evaluate the structural indices of the functional groups present in the samples and the results indicated there was a strong interaction between the polyphosphoric acid and oxygenated species. Contact angle measurements ...
Zhang Xiaofei X Département de Chimie Moléculaire (SERCO) UMR 5250, ICMG FR-2607, CNRS-Université Joseph Fourier , BP 53, 38041 Grenoble Cedex 09, - - 2014
Original acyclic (E)-α,α-dialkylketonitrones bearing a chiral auxiliary on their nitrogen atom were synthesized and successfully employed for the asymmetric synthesis of α,α-disubstituted amino acids using regio- and stereocontrolled 1,3-dipolar cycloaddition reactions with vinyl ethers. N-Glycosyl chiral auxiliaries were found to provide excellent exo- and π-facial stereocontrol. The obtained enantiopure cycloadducts ...
Gil Barbara B Faculty of Chemistry, Jagiellonian University in Kraków, Poland. - - 2014
The unilamellar form of zeolite MWW, MCM-56, which is obtained by direct hydrothermal synthesis has been studied with regard to acidity and porosity in its original and post-synthesis modified pillared and delaminated forms. The acidity measured by FTIR was found to be only slightly lower than the highly active 3-D ...
Lee Woohyung W Department of Chemistry, Yonsei University, Seoul 120-749, Republic of - - 2014
αβα-Tripeptide that contains a cyclic β-amino acid with an eight-membered ring, a cis-2-aminocyclooct-5-enecarboxylic acid (cis-ACOE) or a cis-2-aminocyclooctanecarboxylic acid (cis-ACOC) displayed an 11/9-helical turn in the crystal state. The related α/β-peptide oligomers were shown to adopt 11/9-helical conformations in solution.
Porcelli Vito V University of Bari, - - 2014
The human genome contains 53 members of the solute carrier family 25 (SLC25), also called the mitochondrial carrier family, most of which have been shown to transport carboxylates, amino acids, nucleotides and cofactors across the inner mitochondrial membrane, thereby connecting cytosolic and matrix functions. In this work a member of ...
Niu Panqing P State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Laboratory of Food Microbial-Manufacturing Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, - - 2014
In this study, a novel strategy for α-ketoglutaric acid (α-KG) production from L-glutamic acid using recombinant L-glutamate oxidase (LGOX) was developed. First, by analyzing the molecular structure characteristics of L-glutamic acid and α-KG, LGOX was found to be the best catalyst for oxidizing the amino group of L-glutamic acid to ...
Zhou Xiang X Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Rd., Lanzhou, Gansu 730000, PR China. Electronic address: - - 2014
Clostridium tyrobutyricum is well documented as a fermentation strain for the production of butyric acid. In this work, using high-energy carbon heavy ion irradiated C. tyrobutyricum, then butyric acid fermentation using glucose or alkali and acid pretreatments of Eucommia ulmoides Oliv. as a carbon source was carried out. Initially, the ...
Yang Huaiyu H Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Fruwirthstr. 20, 70593 Stuttgart, Germany; Center for Molecular Biology of Plants (ZMBP), Microscopy Unit, University of Tübingen, Auf der Morgenstelle 5, 72076 Tübingen, - - 2014
The plant vacuole constitutes a large transient storage compartment for nutrients, proteins and metabolites, and is a major cellular sink for toxic waste compounds. Amino acids can cross the vacuolar membrane via specific transport proteins, which are molecularly not well characterized. Two members of a small subfamily of the cationic ...
Pérez-Jiménez Margarita M Departamento de Hortofruticultura, Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), C/ Mayor s/n, 30150 La Alberca, Murcia, Spain. Electronic address: - - 2014
The relationship between endogenous hormones content and the induction of somatic peach plant was studied. To induce multiple shoots from callus derived from the base of stem explants of the scion cultivars 'UFO-3', 'Flariba' and 'Alice Bigi', and the peach×almond rootstocks 'Garnem' and 'GF677', propagated plants were cultured on Murashige ...
Cateni F F Department of Chemical and Pharmaceutical Sciences, University of Trieste, P.zle Europa 1, 34127 Trieste, Italy. Electronic address: - - 2014
The methanolic extract of the plant Euphorbia helioscopia L. exhibited an interesting free-radical scavenging activity. From the aerial parts of Euphorbia helioscopia L. (Euphorbiaceae), a complex mixture of seven cerebrosides together with glucoclionasterol, a digalactosyldiacylglycerol and a diacylmonogalactosylglycerol were identified. The structures of the cerebrosides were characterized as 1-O-β-D-glucosides of ...
Skrzypczak-Pietraszek Ewa E Chair and Department of Pharmaceutical Botany, Collegium Medicum, Jagiellonian University, Kraków, - - 2014
Phenolic acids are an important group of plant secondary metabolites with various, valuable therapeutic properties. Apart from plants growing in the open air, tissue cultures can be an alternative source of the secondary metabolites. The yield of their accumulation in in vitro cultures can be increased by different methods, including ...
Silva Mónica M Departamento de Química, Universidade de Coimbra, Rua Larga, 3004-535 Coimbra, Portugal. mcalvete@qui.uc.pt - - 2014
The rationalisation of the influence of acidity and pore size of several solid oxides so that they selectively act as supports for preparation of encapsulated porphyrin hybrid materials or as catalysts for synthesis of porphyrins in solution is discussed. Encapsulated porphyrin yields are dependent on both the acidity and the ...
Liu Qing-Ai - - 2014
   Three new 14-membered resorcylic acid lactones, cochliomycins D-F, 1-3, and eight known analogues, 4-11, were isolated from the sea anemone-derived fungus Cochliobolus lunatus. Compounds 1-4 are diastereomers differing from each other by the absolute configurations of the 4',5'-diol chiral centers. The absolute configurations of 1-4 were established by the CD ...
Song Jianjun J Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, - - 2014
Monodispersed LiFePO4 nanocrystals with diverse morphologies were successfully synthesized via a mild and controllable solvothermal approach with a mixture of ethylene glycol and oleic acid as the solvent. Morphology evolution of LiFePO4 nanoparticles from nanoplates to nanorods can be simply realized by varying the volume ratio of oleic acid to ...
Bosle Janine M JM Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128, Mainz, - - 2014
This study presents a novel method for the analysis of low molecular weight (LMW) fatty acids in cave drip water and speleothems. The method development included optimization of sample preparation procedures, e.g., blank reduction, solid phase extraction, concentration of extracts as well as liquid chromatography coupled to electrospray ion-trap mass ...
Jô L F LF Université des Antilles et de la Guyane, Schoelcher, Martinique, France, - - 2014
The recycling of nitric acid and copper nitrate contained in an industrial effluent was studied. The experiments conducted on such a medium showed that the presence of copper nitrate significantly improves nitric acid-water separation during distillation in an azeotropic medium. At the temperature of the azeotrope, however, this metal salt ...
Freeman Fillmore F Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA. - - 2014
The density functionals B3LYP, B3PW91, M062X, and CAM-B3LYP with the 6-311+G(d,p) basis set predict the cysteine sulfenic acid O-sulfenylation of the s-cis-ketoenol tautomer of 1,3-cyclohexanedione proceeds through a cyclic 14-membered transition state structure containing three water molecules.
Li Xiukai X Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669 - - 2014
The production of bulk chemicals and fuels from renewable bio-based feedstocks is of significant importance for the sustainability of human society. Adipic acid, as one of the most-demanded drop-in chemicals from a bioresource, is used primarily for the large-volume production of nylon-6,6 polyamide. It is highly desirable to develop sustainable ...
Wang Lingtao L Key Laboratory for Green Chemical Technology of Ministry of Education, Research and Development Center for Petrochemical Technology, Tianjin University, Tianjin 300072, - - 2014
A novel carbon-based solid acid catalyst was prepared by the sulfonation of incompletely carbonized cassava stillage residue (CSR) with concentrated sulfuric acid, and employed to catalyze the esterification of methanol and free fatty acids (FFAs) in waste cooking oil (WCO). The effects of the carbonization and the sulfonation temperatures on ...
Magyar Ildikó I Department of Oenology, Institute of Viticulture and Oenology, Corvinus University of Budapest, Ménesi út 45, Budapest H 1118, Hungary. Electronic address: - - 2014
Organic acid production under oxygen-limited conditions has been thoroughly studied in the Saccharomyces species, but practically never investigated in Candida zemplinina, which seems to be an acidogenic species under oxidative laboratory conditions. In this study, several strains of C. zemplinina were tested for organic acid metabolism, in comparison with Saccharomyces ...
Favre Guzmán G Facultad de Agronomía, Universidad de la República, Avda. Garzón 780, C.P. 12900, Montevideo, Uruguay. Electronic address: - - 2014
Low molecular weight phenols of Tannat red wines produced by Traditional Maceration (TM), Prefermentative Cold Maceration (PCM), Maceration Enzyme (ENZ) and grape-Seed Tannins additions (ST), were performed and discussed. Alternatives to TM increased wine phenolic contents but unequally, ST increased mainly smaller flavans-3-ol, PCM anthocyanins and ENZ proanthocyanidins (up to ...
Simon Paul P Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187, Dresden, - - 2014
Make it connected! 2D close-packed layers of inorganic nanoparticles are interconnected by organic fibrils of oleic acid as clearly visualized by electron holography. These fibrils can be mineralised by PbS to transform an organic-inorganic framework to a completely interconnected inorganic semiconducting 2D array.
Liu Chunying C Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun, 130012, People's Republic of - - 2014
Przewalskinic acid A is a rare, water-soluble, and highly biologically active ingredient found, thus far, only in the Salvia przewalskii Maxim herb; however, the content in S. przewalskii herb is very low. In order to obtain useful quantities of przewalskinic acid A, the biotransformatin of salvianolic acid B from Salvia ...
Kegler Carsten C Merck Stiftungsprofessur für Molekulare Biotechnologie, Fachbereich Biowissenschaften, Goethe Universität Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main - - 2014
An E. coli strain with deletions in five transaminases (ΔaspC ΔilvE ΔtyrB ΔavtA ΔybfQ) was constructed to be unable to degrade several amino acids. This strain was used as an expression host for the analysis of the amino acid configuration of nonribosomally synthesized peptides, including the novel peptide "xenotetrapeptide" from ...
Bertin Delphine D IRSTEA, UR MALY, 5 rue de la Doua, CS 70077, F-69626 Villeurbanne, France. Electronic address: - - 2014
Midge larvae (Chironomus riparius) were exposed to sediments from a deposition sampled at a site along the Rhône River (France) downstream of an industrial site releasing various perfluorinated chemicals. This sediment is characterized by high concentrations of perfluoroundecanoic acid (PFUnA) and perfluorotridecanoic acid (PFTrDA) and a low perfluorooctane sulfonate (PFOS) ...
Vilanova L L IRTA, XaRTA-Postharvest, Rovira Roure 191, 25198 Lleida, Catalonia, - - 2014
New information about virulence mechanisms of Penicillium digitatum and Penicillium expansum could be an important avenue to control fungal diseases. In this study, the ability of P. digitatum and P. expansum to enhance their virulence by locally modulating the pH of oranges and apples was evaluated. For each host, pH ...
Sarcevica Inese I Latvian Institute of Organic Synthesis, Aizkraukles Street 21, Riga, - - 2014
A new polymorph of the cinnamic acid-isoniazid cocrystal has been prepared by slow evaporation, namely cinnamic acid-pyridine-4-carbohydrazide (1/1), C9H8O2·C6H7N3O. The crystal structure is characterized by a hydrogen-bonded tetrameric arrangement of two molecules of isoniazid and two of cinnamic acid. Possible modification of the hydrogen bonding was investigated by changing the ...
Brown James R D JR Manchester Institute of Biotechnology (MIB) and School of Chemistry, University of Manchester, 131 Princess St., Manchester M1 7DN, UK. - - 2014
Wulff-type boronic acids have been shown to act as ionophores at pH 8.2 by transporting Na(+) through phospholipid bilayers. A cholate-boronic acid conjugate was synthesised and shown to be an ionophore, although the hydroxyl-lined face of the cholate moiety did not enhance ion transport. Mechanistic studies suggested a carrier mechanism ...
Ye Mengqi M College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China, - - 2014
Polyphenols and organic acids were the important constitutes in the cider because they greatly contribute to organoleptic quality. The determination of their changes is important for monitoring the fermentation process for purposes of quality control. In this study, evolution of polyphenols and organic acids was monitored throughout the cider fermentation ...
Ato Makoto M Department of Biotechnology, Graduate School of Agriculture and Life Sciences, The University of Graduate School of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, - - 2014
In anaerobic condition, amino acids are oxidatively deaminated, and decarboxylated, resulting in the production of volatile fatty acids. In this process, excess electrons are produced and their consumption is necessary for the accomplishment of amino acid degradation. In this study, we anaerobically constructed leucine-degrading enrichment cultures from three different environmental ...
Nawrocki Grzegorz G Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, - - 2014
The growing usage of nanoparticles of zinc sulfide as quantum dots and biosensors calls for a theoretical assessment of interactions of ZnS with biomolecules. We employ the molecular-dynamics-based umbrella sampling method to determine potentials of mean force for 20 single amino acids near the ZnS (110) surface in aqueous solutions. ...
Ma Defang D Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, - - 2014
Dissolved organic matter (DOM) in MBR-treated municipal wastewater intended for reuse was fractionated through ultrafiltration and XAD-8 resin adsorption and characterized by fluorescence spectroscopy. To probe the influences of DOM characteristics on trihalomethanes (THMs) formation reactivity during chlorination, THMs yield and speciation of DOM fractions was investigated. It was found ...
Li Daojin D State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, - - 2014
Boronate affinity chromatography (BAC) is a unique means for the selective separation and enrichment of 1,2 and 1,3 cis-diol-containing compounds. However, conventional boronate affinity materials require a basic binding pH (usually≥8.5), which gives rise to not only inconvenience in operation but also the risk of degradation of labile compounds. Although ...
He Xi-Xin XX a School of Chinese Materia Medica, Guangzhou University of Chinese Medicine , 232 Waihuan East Road, Guangzhou 510006 , P.R. - - 2014
One new imidazole derivative alkaloid pelopuradazole (1), together with three known alkaloids as in 3H-imidazole-4-carboxylic acid (2), 1H-pyrrole-2-carboxylic acid (3) and 2-methyl-3H-imidazole-4-carboxylic acid (4) and two known cyclo-dipeptides pelopurin A (5) and pelopurin B (6), has been isolated from the marine bacterium Pelomonas puraquae sp. nov. Pelopuradazole (1) was a ...
Canale Vittorio V Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Kraków, - - 2014
A 47-membered library of novel long-chain arylpiperazines, which contained cyclic amino acid amides in the terminal fragment (pyrrolidine-2-carboxamide and 1,2,3,4-tetrahydroisoquinoline-3-carboxamide), was synthesized on Rink-amide resin and biologically evaluated for binding affinity for 5-HT7 and 5-HT1A receptors. Surprisingly, members of the designed series containing piperidine-2-carboxamide fragments underwent hydrolysis, which occurred during ...
Kumar Mrinal Nishant MN Food Biotechnology Group, Department of Chemistry, University of Patras, 26500 Patras, - - 2014
Porous delignified cellulose (or tubular cellulose, abbr. TC) from Indian Mango (Mangifera indica) and Sal (Shorea robusta) wood and Rice husk, and TC/Ca-alginate/polylactic acid composites, were used as Lactobacillus bulgaricus immobilisation carriers leading to improvements in lactic acid fermentation of cheese whey and synthetic lactose media, compared to free cells. ...
Petta Tânia T Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, CEP 14040-901, Bairro Monte Alegre, Ribeirão Preto, SP, Brazil. Electronic address: - - 2014
Lipid mediators such as the leukotrienes, resolvins and protectins have been considered excellent models for the development of new anti-inflammatory drugs, due to their high potentiality. Nevertheless, only tiny amounts are available from natural sources and they have to be prepared by total synthesis. It is known that besides chemical ...
Tseng Nancy - - 2014
Biotransformation of 6:2 FTOH [F(CF2)6CH2CH2OH] by the white-rot fungus, Phanerochaete chrysosporium, was investigated in laboratory studies. 6:2 FTOH is a raw material increasingly being used to replace products that can lead to long-chain perfluoroalkyl carboxylic acids (PFCAs, ≥ 8 carbons). During a product's life cycle and after final disposal, 6:2 ...
Imbs Andrey B AB A.V. Zhirmunsky Institute of Marine Biology, Far-Eastern Branch of Russian Academy of Sciences, 690041 Vladivostok, Russian Federation. Electronic address: - - 2014
High diversity of fatty acid (FA) composition of endosymbiotic dinoflagellates of the Symbiodinium group (zooxanthellae) isolated from different cnidarian groups has been found. To explain this diversity, FA composition of the total lipids of pure symbiont fractions (SF) and host cell tissue fractions (HF) isolated from one hydrocoral, two soft ...
Ramani Meghana M Center for Materials Science and Nano Devices, Department of Physics, SRM University, Kattankulathur, Kancheepuram (D.t.), Chennai 603203, Tamil Nadu, - - 2014
ZnO nanostructures (ZnO-NSs) of different morphologies are synthesized with the amino acids l-alanine, l-threonine, and l-glutamine as capping agents. X-ray diffraction (XRD) shows the formation of a crystalline wurtzite phase of ZnO-NSs. The surface modification of ZnO-NSs due to the capping agents is confirmed using Fourier transform infrared (FTIR) spectroscopy. ...
Peng Bo B Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim - - 2014
A Brønsted acid catalyzed redox arylation of ynamides that employs aryl sulfoxides as the arylating agents is reported. This metal-free transformation proceeds at room temperature and efficiently affords α-arylated oxazolidinones in a redox-neutral, atom-economic fashion.
Cheng Dao-Juan DJ Department of Chemistry, South University of Science and Technology of China, Shenzhen, 518055 - - 2014
A highly efficient strategy for the kinetic resolution of axially chiral BINAM derivatives involving a chiral Brønsted acid-catalyzed imine formation and transfer hydrogenation cascade process was developed. The kinetic resolution provides a convenient route to chiral BINAM derivatives in high yields with excellent enantioselectivities.
Hossain Rashadul - - 2014
A new ursane triterpene, torment (2 alpha,3 beta,19 alpha-trihydroxyurs-12-en) (1), was isolated from the fruits of Terminalia arjuna along with four known ursane and oleane triterpenes. The structures were established on the basis of extensive NMR (1D & 2D) and MS (EI & ESI) studies. Tormentic acid (2), 19 alpha-hydroxy ...
Zhu Baotong - - 2014
We explored whether bacteria could respond adaptively to the presence of carbon nanotubes (CNTs) by investigating the influence of CNTs on the viability, composition of fatty acids, and cytoplasmic membrane fluidity of bacteria in the aqueous medium for 24 h exposure. The CNTs included long single-walled carbon nanotubes (L-SWCNTs), short ...
Cañas Pedro Miguel Izquierdo PM 1Instituto de la Vid y el Vino de Castilla-La Mancha, Tomelloso (Ciudad Real), - - 2014
A study has been carried out in order to determine the effect of the lactic acid bacteria inoculation time on the kinetic of vinification and on chemical and sensory characteristics of Cabernet Franc wines. Traditional vinifications, with lactic acid bacteria inoculated after completion of alcoholic fermentation were compared with vinifications ...
Furmanek Tomasz T Institute of Biology and Environmental Protection, Pomeranian University in Słupsk, Arciszewskiego 22b, 76-200, Słupsk, - - 2014
The triacylglycerol of Crambe abyssinica seeds consist of 95 % very long chain (>18 carbon) fatty acids (86 % erucic acid; 22:1(∆13)) in the sn-1 and sn-3 positions. This would suggest that C. abyssinica triacylglycerols are not formed by the action of the phospholipid:diacylglycerol acyltransferase (PDAT), but are rather the results of ...
Zheng Yanlin Y No.189 Songling - - 2014
Since CO2 concentrations in industrial fuel gases are usually 10%-20%, one of the prerequisites for efficient CO2 removal by algae is the level of tolerance of microalgal species to exposure to high concentrations of CO2. A newly isolated microalgal strain, Chlorella sp. MRA-1, could retain growth with high concentrations of ...
Possebom Gessica G Department of Food Engineering, URI Erechim, Av. Sete de Setembro, 1621, Erechim, 99700-000, RS, - - 2014
This study investigated the performance of a membrane reactor for esterification of oleic acid and butyric acid with ethanol by Penicillium crustosum lipase. The membrane reactor system was operated with polyethersulfone membranes with molecular weight cut-off of 30, 60 and 100 kDa, operating up to 200 kPa. The confinement of ...
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