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Thomas Michael C MC Independent Marine Biochemistry Research, Moreton Bay Research Station, Dunwich, Qld, 4183, Australia, - - 2013
Fatty acids are long-chain carboxylic acids that readily produce [M - H](-) ions upon negative ion electrospray ionization (ESI) and cationic complexes with alkali, alkaline earth, and transition metals in positive ion ESI. In contrast, only one anionic monomeric fatty acid-metal ion complex has been reported in the literature, namely ...
Tajima Hiroki H Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, - - 2013
A cyclic peptide was isolated from the deep-sea marine sponge Discodermia japonica, and its NMR spectroscopic data were identical to those reported for cyclolithistide A, a known antifungal depsipeptide. However, the interresidue HMBC correlations suggested that the amino acid sequence was different from that of the original structure. Moreover, chiral-phase ...
Nueangaudom Arthit A Department of Chemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Bangkok 10330, Thailand. - - 2013
The structural difference between two subunits of d-amino acid oxidase dimer from porcine kidney was studied by molecular dynamics simulation (MDS) and rate of photoinduced electron transfer (ET) from aromatic amino acids as tyrosines (Tyr) and tryptophanes (Trp) to the excited isoalloxazine (Iso*). The donor-acceptor distances (Rc) between isoalloxazine (Iso) ...
Isobe Kimiyasu K Department of Biological Chemistry and Food Science, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan. Electronic address: - - 2013
An enzyme exhibiting oxidase activity for β-lactoglobulin, myoglobin, and l-lysine-containing peptides was found from a newly isolated fungal strain, Penicillium steckii AIU 027. The enzyme also oxidized l-amino acids, N(α)-benzyloxycarbonyl-l-lysine (N(α)-Z-l-lysine) and N(ε)-Z-l-lysine, but not d-amino acids and amines. Thus, the enzyme was classified into a group of l-amino acid ...
Campbell Oluranti E OE Department of Food Science, Cornell University , 630 W. North Street, Geneva, New York 14456, United - - 2013
The phenolic and carotenoid content and quality indices of five Northeast apricot varieties were assessed over two years and the impact of maturity at harvest was evaluated. Four varieties were analyzed at commercial and tree ripe stages and one variety after storage for 4 weeks (0-1 °C, 90-95% relative humidity). ...
Perez-Bonilla Mercedes - - 2013
The purpose of this study was to complete the knowledge on the chemical composition and radical scavenging activity of olive tree wood. Two new monoterpene glycosides, (-)-oleuropeic acid 6'-O-α-D-glucopyranosyl ester (6a) and (-)-perillic acid 1'-O-β-D-primeverosyl ester (8), together with the known compounds (-)-oleuropeic acid (1), (-)-olivil (2), the aldehydic form ...
Nava Matthew M Center for s and p Block Chemistry, Department of Chemistry, University of California, Riverside, CA 92521 (USA) http://reedgrouplab.ucr.edu/; Current address: Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139-4307 - - 2013
What is the strongest acid? Can a simple Brønsted acid be prepared that can protonate an alkane at room temperature? Can that acid be free of the complicating effects of added Lewis acids that are typical of common, difficult-to-handle superacid mixtures? The carborane superacid H(CHB11 F11 ) is that acid. ...
Sun Ning N State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; Beijing Entry-Exit Inspection and Quarantine Bureau, Beijing 100026, China; CAS Key Laboratory of Measurement and Standardization for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, - - 2013
We present a detailed study of nucleic acid adsorption onto silica-coated magnetic particles in the presence of guanidinium thiocyanate, and extraction of nucleic acid from two important transfusion-transmitted viruses using these particles. Silica-coated magnetic particles were prepared by encapsulating Fe3O4 nanoparticles with tetraethylorthosilicate (TEOS) hydrolysis. Scanning electron microscopy (SEM), transmission ...
Perelshtein Ilana I Department of Chemistry, Kanbar Laboratory for Nanomaterials, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel. Electronic address: - - 2013
Tannic acid nanoparticles were synthesized from an aqueous solution without the use of stabilizers via a sonochemical process. In order to avoid the dissolution of the formed nanoparticles, the sonochemical reaction was performed in the presence of a cotton fabric: following their formation, the tannic acid nanoparticles were embedded into ...
Li Xia X Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, - - 2014
This study was performed to compare the contents of total phenolics, total flavonoids, and total triterpenes between peel and flesh of ten different pear cultivars. The monomeric compounds were analyzed by HPLC, their antioxidant and anti-inflammatory activities were also measured. Peel and flesh from Yaguang, Hongpi, Qingpi and Guifei varieties ...
Cheng Rui - - 2013
A new β-1,3-1,4-glucanase gene (PlicA) was cloned from Paenibacillus sp. S09. The ORF contained 717 bp coding for a 238 amino acid protein. PlicA, expressed in Escherichia coli and purified by Ni(2+)-affinity chromatography, had optimum activity at 55 °C and pH 6.2. The specific activity toward barley β-glucan reached 7,055 U/mg. K ...
Butkevich Alexey N - - 2013
A one-pot Suzuki-Miyaura cross-coupling/acid-catalyzed cyclisation leading to indenones and indanones in modest to good yields is reported.
Boer Stephanie A - - 2013
A reproducible metallocyclic motif containing amino-acid functionalised aromatic diimides has been employed to demonstrate remarkable control over entanglement topologies. [2]-Catenane and pseudo-rotaxane units give rise to 1D → 2D polycatenation, the formation of which can be sterically prevented, and a unique 1D → 3D polyrotaxane.
Aja M M Department of Zoology, Mar Ivanios College, Thiruvananthapuram 695 015, Kerala, - - 2013
FT-IR spectroscopy is a useful tool for determining the biomolecular profile of micro-samples of body fluids such as coelomic fluid of earthworms. The present study focuses on the usefulness of the earthworm (Perionyx sansibaricus) coelomic fluid for observing pathologically induced biochemical changes. Compared to controls, appreciable changes in expression of ...
Hamilton Mary L ML Department of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, AL5 2JQ, - - 2013
We have engineered the diatom Phaeodactylum tricornutum to accumulate the high value omega-3 long chain polyunsaturated fatty acid docosahexaenoic acid (DHA). This was achieved by the generation of transgenic strains in which the Δ5-elongase from the picoalga Ostreococcus tauri was expressed to augment the endogenous fatty acid biosynthetic pathway. Expression ...
Shakhmatov Evgeny G EG Institute of Chemistry, Komi Science Centre, The Urals Branch of the Russian Academy of Sciences, Pervomaiskaya Street 49, Syktyvkar 167982, - - 2014
Fractions containing arabinogalactan proteins (AGPs) and pectic polysaccharides were isolated from above-ground parts of Heracleum sosnowskyi. Major units of their structure were elucidated using ion-exchange chromatography, gel chromatography, and NMR spectroscopy. The carbohydrate backbone of the polysaccharides consisted of 1,3-β-d-galactopyranosyl residues, whereas side chains of the branched region consisted of ...
Yan Yiheng - - 2013
Duckweeds, i.e., members of the Lemnoideae family, are amongst the smallest aquatic flowering plants. Their high growth rate, aquatic habit and suitability for bio-remediation make them strong candidates for biomass production. Duckweeds have been studied for their potential as feedstocks for bioethanol production; however, less is known about their ability ...
Saeed Aamer - - 2013
A concise total synthesis of ( ± )-desmethyldiaportinol isolated from Ampelomyces sp. is described. Microwave-assisted cyclocondensation of 3,5-dimethoxyhomopthalic acid with 3,4-dibromobutanoyl chloride afforded the 3-(2,3-dibromopropyl)-6, 8-dimethoxyisocoumarin in 2-3 min as the pivotal step. The 3,4-dibromobutanoyl chloride was itself synthesised from 3-butenoic acid via bromination in carbon tetrachloride at room temperature to yield 3,4-dibromobutanoic ...
Speight Lee C - - 2013
The amino acid acridon-2-ylalanine (Acd) can be a valuable probe of protein conformational change because it is a long lifetime, visible wavelength fluorophore that is small enough to be incorporated during ribosomal biosynthesis. Incorporation of Acd into proteins expressed in Escherichia coli requires efficient chemical synthesis to produce large quantities ...
Jung Jooyeoun J Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331-6602, - - 2014
Alkali- or acid-induced structural modifications in β-chitin from squid (Dosidicus gigas, d'Orbigny, 1835) pens and their moisture absorption ability (MAA) and deacetylating reaction were investigated and compared with α-chitin from shrimp shells. β-Chitin was converted into the α-form after 3h in 40% NaOH or 1-3h in 40% HCl solution, and ...
Hernández-Ainsa Silvia S Departamento de Química Orgánica, Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón, CSIC, Pedro Cerbuna 12, 50009-Zaragoza, - - 2013
The self-assembly behaviour both in the bulk and water of a series of amphiphilic dendrimers constituted by second generation PAMAM ionically functionalized with different amounts of myristic acid is shown here. The number of acids in the dendrimer determines the liquid-crystal properties and the structural parameters of their supramolecular organization. ...
Karaman Maja - - 2013
Abstract Crude extracts of two edible and two medicinal lignicolous mushroom species: Meripilus giganteus, Agrocybe aegerita, Fomes fomentarius and Xylaria polymorpha, growing wild in Serbia, were analyzed for their antioxidative and antibacterial potentials. Free radical scavenging capacity (RSC) on DPPH(•) and (•)OH was evaluated both by spectrophotometer and by Electron ...
Shen Yixiao - - 2013
Hydrophilic (HPE) and lipophilic (LPE) extracts were obtained from the Louisiana sweet sorghum millets. Nine major hydrophilic phytochemicals were quantified at levels of 8.9 µg/g for cinnamic acid to 1570.0 µg/g for apigeninidin. Lipophilic phytochemicals (α- and -tocopherol, lutein and β-carotene) were quantified at levels of 7.7, 145.7, 4.8, and ...
Long M M College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China; College of Veterinary Medicine, Jilin University, Jilin 130062, - - 2013
The aim of this study was to examine the effects of the acid-tolerant engineered bacterial strain Megasphaera elsdenii H6F32 (M. elsdenii H6F32) on ruminal pH and the lactic acid concentrations in simulated rumen acidosis conditions in vitro. A mixed culture of ruminal bacteria, buffer, and primarily degradable substrates was inoculated ...
Leja Katarzyna - - 2013
Clostridium bifermentans strains, isolated from a manure, were examinated for their ability to produce lactic acid from PY medium with glycerol under different pH conditions and when PY medium was supplemented with saccharides such as fructose, sorbitol, glucose, mannose, mannitol, maltose, xylose, raffinose, and arabinose. In the last test performed, ...
Kugimiya Akimitsu - - 2013
An amino acid-sensing system with absorption spectrophotometric detection was developed. To ensure specific recognition of each amino acid, aminoacyl-tRNA synthetases were employed and the concentration of NADH produced by way of several enzymatic reactions was measured. Using this detection system, from 1.5 to 55μM of histidine and from 15 to ...
Li Yunxiang - - 2013
The physical chemical behavior of a series of N-alkyl amino acid-based surfactants has been investigated. The series comprises four different types of amino acids as polar headgroups: glycine, aminomalonic acid, aspartic acid and glutamic acid, and for each type three homologues were synthesized: the octyl, decyl and dodecyl derivative. Aminomalonic ...
Bolling Bradley W - - 2013
The aim of this study was to examine the contribution of sugar, organic acid, neutral phenol, and anthocyanin fractions and added ascorbic acid to grape and pomegranate-nectarine juice total phenol, ORAC, FRAP, and DPPH values. Neutral phenol and anthocyanin fractions contributed ≥75% of the total antioxidant capacity (TAC) for both ...
Kim Jeong Kwon - - 2013
Etherification of n-butanol to di-n-butyl ether was carried out over various structural classes of heteropolyacid (HPA) catalysts, including Keggin- (H3PW12O40), Wells-Dawson- (H6P2W18O62), and Preyssler-type (H14[NaP5W30O110]) HPA catalysts. Successful formation of HPA catalysts was well confirmed by FT-IR, 31P NMR, and ICP-AES analyses. Acid properties of HPA catalysts were determined by ...
Sparr Christof - - 2013
Neurotensin(8-13) (NTS(8-13)) analogs with C- and/or N-terminal β-amino acid residues and three DOTA derivatives thereof have been synthesized (i.e., 1-6). A virtual docking experiment showed almost perfect fit of one of the 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) derivatives, 6a, into a crystallographically identified receptor NTSR1 (Fig. 1). The affinities for the receptors of ...
Hunsberger Alexandra A Department of Chemistry, Lafayette College, Easton, PA, - - 2013
The effects of a 5 versus 25 miracidia exposure of Echinostoma caproni on the lipid composition of Biomphalaria glabrata was studied using high performance thin layer chromatography (HPTLC)-densitometry. A 50 miracidia dose was not used because such a high level of exposure caused severe snail mortality by 3 weeks post-exposure ...
Dhup Saumya S Biotechnology and Management of Bioresources Division, The Energy and Resources Institute (TERI), India Habitat Centre, Lodhi Road, New Delhi 110003, India. Electronic address: - - 2013
Green algae, Monoraphidium sp. T4X, was isolated locally, in New Delhi, India and identified as a potential source of biofuel. The study focuses on the effect of nutritional amendments and their uptake rates with respect to growth and change in fatty acid composition of the species. The lipid productivity and ...
Jeon Hancheol H Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, 133-791, Republic of - - 2013
Non-food-based biofuel feedstocks are in high demand worldwide. Among the various feedstocks, microalgae are the most promising feedstock for mitigating atmospheric CO2 and producing biodiesel. In this study, various concentrations of CO2, from 0.03 to 12%, were used to investigate their effect on the cell growth, biomass and lipid production ...
Phan Chia-Wei CW Mushroom Research Centre, Institute of Biological Sciences, Faculty ofScience, University of Malaya, 50603 Kuala Lumpur, - - 2013
Different solvent extracts of Pleurotus giganteus fruiting bodies were tested for antifungal activities against Candida species responsible for human infections. The lipids extracted from the ethyl acetate fraction significantly inhibited the growth of all the Candida species tested. Analysis by GC/MS revealed lipid components such as fatty acids, fatty acid ...
Pan Yingyi - - 2013
To investigate whether Jieduxiezhuo decoction (JDXZD) can prevent serum uric acid elevations in mice. Hyperuricemia in mice was induced by intraperitoneally administering uric acid (250 mg/ kg). Concentrations of uric acid in serum were determined using the uric acid enzyme method. Mice were treated with JDXZD for 4 days before ...
Ferrara Maria Antonieta MA Instituto de Tecnologia em Fármacos, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, - - 2013
Perillyl derivatives are increasingly important due to their flavouring and antimicrobial properties as well as their potential as anticancer agents. These terpenoid species, which are present in limited amounts in plants, may be obtained via bioconversion of selected monoterpene hydrocarbons. In this study, seventeen yeast strains were screened for their ...
Kong Yun - - 2013
An antialgal bacterium, Streptomyces sp. HJC-D1, was applied for the biodegradation of cyanobacterium Microcystis aeruginosa, and the isolation and characterization of dissolved organic matter (DOM) fractions in antialgal products were studied. Results showed the the growth of M. aeruginosa was significantly inhibited by the cell-free filtrate of Streptomyces sp. HJC-D1 ...
Brewer Greg G Department of Chemistry, Catholic University of America, Washington, DC 20064, - - 2013
The title compound, C5H9NO4·H2O, is an isomer of the α-amino acid glutamic acid that crystallizes from water in its zwitterionic form as a monohydrate. It is not one of the 20 proteinogenic α-amino acids that are used in living systems and differs from the natural amino acids in that it ...
Bispo Paulo - - 2013
The increasing evidence on the differential biochemical effects of eicosapentaenoic acid (EPA)/docosahexaenoic acid (DHA) raises the need of n-3 highly unsaturated fatty acid concentrates with different amounts of these fatty acids. In the present work, physicochemical and enzymatic techniques were combined to obtain acylglycerols, mainly triacylglycerols (TAG), rich in n-3 ...
Hugentobler Katharina G - - 2013
Different optically active amido esters, mixed acid esters, amido acids, and diamides derived from trans-cyclopropane-1,2-dicarboxylic acid were prepared from the commercially available diethyl (±)-trans-cyclopropane-1,2-dicarboxylate. The key step was the Rhodococcus rhodochrous IFO 15564 catalyzed hydrolysis of the corresponding racemic amide. The amidase present in this microorganism showed moderate to high ...
Nugroho Agung - - 2013
The herbs of Euphorbia supina (Euphorbiaceae) have been used to treat hemorrhage, chronic bronchitis, hepatitis, jaundice, diarrhea, gastritis, and hemorrhoids as a medicinal herb. This work is aimed to qualitatively and quantitatively analyze the polyphenols with peroxynitrite-scavenging activities. The eight compounds: gallic acid, methyl gallate, avicularin, astragalin, juglanin, isoquercitrin 6″-gallate, ...
Nakanishi Ikuo - - 2013
Electron-transfer disproportionation of a 2,2-diphenyl-1-picrylhydrazyl radical (DPPH˙) occurred in the presence of Sc(3+) acting as a strong Lewis acid in deaerated acetonitrile. In contrast, in the case of weaker Lewis acids than Sc(3+), such as Mg(2+) and Li(+), external protons from acetic acid were required for the disproportionation of DPPH˙ ...
Vu Hieu Sy - - 2013
Formation of galactose-acylated monogalactosyldiacylglycerols has been shown to be induced by leaf homogenization, mechanical wounding, avirulent bacterial infection, and thawing after snap-freezing. Here, lipidomic analysis using mass spectrometry showed that galactose-acylated monogalactosyldiacylglycerols, formed in wheat (Triticum aestivum) and tomato (Solanum lycopersicum) leaves upon wounding, have acyl-galactose profiles that differ from ...
Revi M M Laboratory of Food Chemistry and Technology, Department of Chemistry, University of Ioannina, Ioannina 45110, - - 2014
The enological parameters and volatile compounds of white wine packaged in dark coloured glass and two commercial bag-in-box (BIB) pouches (low density polyethylene - LDPE and ethylene vinyl acetate - EVA lined) were determined for a period of 6months at 20°C. Parameters monitored included: titratable acidity, volatile acidity, pH, total ...
Mohamadi Maryam - - 2013
Several medicinal applications have been reported for different components of date palm. The inflorescence of the male date tree is composed of spathe that surrounds many buds containing pollen. In this study, a comparison between the content and composition of the essential oils obtained from these three components of an ...
So Soon Mog - - 2013
The highly stereoselective supramolecular self-assembly of α-amino acids with a chiral aldehyde derived from binol and a chiral guanidine derived from diphenylethylenediamine (dpen) to form the imino acid salt is reported. This system can be used to cleanly convert D-amino acids into L-amino acids or vice versa at ambient temperature. ...
Taylor Peter M - - 2013
Amino acid (AA) transporters may act as sensors, as well as carriers, of tissue nutrient supplies. This review considers recent advances in our understanding of the AA-sensing functions of AA transporters in both epithelial and nonepithelial cells. These transporters mediate AA exchanges between extracellular and intracellular fluid compartments, delivering substrates ...
Cantin Sophie - - 2013
The adsorption of zinc cations under behenic acid Langmuir monolayers was investigated by means of isotherm measurements, grazing incidence x-ray diffraction and Brewster angle microscopy. The structure of the films was characterized as a function of Zn2+ concentration, for three different counter-ions (chloride, iodide, bromide) and at two subphase pHs ...
McNulty James - - 2013
A one-step synthesis of 4-arylquinoline-2-carboxylates along with their antiprotozoal activity against the pathogenic parasite Toxoplasma gondii is reported. Mechanistic insights into the role of Lewis acid (silver triflate) versus Bronsted acid (triflic acid) catalysis are revealed clarifying aspects of the mechanism of the quinoline synthesis.
Yu Yang - - 2013
Nine new homosecoiridoid alkaloids, named lonijaposides O-W (1-9), along with 19 known compounds, were isolated from an aqueous extract of the flower buds of Lonicera japonica. Their structures and absolute configurations were determined by spectroscopic data analysis and chemical methods. Lonijaposides O-W have structural features that involve amino acid units ...
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