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Price Daniel R G DR Department of Biology, University of Miami, Coral Gables, FL - - 2014
Endosymbiotic associations have played a major role in evolution. However, the molecular basis for the biochemical interdependence of these associations remains poorly understood. The aphid-Buchnera endosymbiosis provides a powerful system to elucidate how these symbioses are regulated. In aphids, the supply of essential amino acids depends on an ancient nutritional ...
Park Ji-Yeon JY Department of Clean Fuel, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea. Electronic address: - - 2013
Acid-catalyzed hot-water treatment for efficient extraction of lipids from a wet microalga, Chlorella vulgaris, was investigated. For an initial fatty acids content of 381.6mg/g cell, the extracted-lipid yield with no heating and no catalyst was 83.2mg/g cell. Under a 1% H2SO4 concentration heated at 120°C for 60min, however, the lipid-extraction ...
Li Ming M Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, Hefei 230026, - - 2013
A solid acid catalyst was prepared by sulfonating pyrolyzed rice husk with concentrated sulfuric acid, and the physical and chemical properties of the catalyst were characterized in detail. The catalyst was then used to simultaneously catalyze esterification and transesterification to produce biodiesel from waste cooking oil (WCO). In the presence ...
Stuper-Szablewska Kinga K Department of Chemistry, Poznan University of Life Sciences, Wojska Polskiego 75, 60-625 Poznan, Poland. Electronic address: - - 2014
Analyses were conducted on 30 winter wheat samples growing under controlled conditions and following inoculation with fungi Fusarium culmorum. In inoculated samples the mean concentration of 30 analysed fatty acids was significantly higher in relation to the control and amounted to 1396mg/kg vs. 1046mg/kg in the control kernels. Recorded concentrations ...
Oztürk Meryem M Faculty of Science, Department of Biology, Selçuk University, 42100, Konya, - - 2013
In samples with 1,009, 7,723, 7,618, 7,618, 1,004 and 1,009 number, oleic acid were found as 62.0, 77.0, 74.84, 71.55, 54.52 and 62.30 %, respectively. In other samples, oleic acid content was determined between 17.43 % (1,589) and 34.86 % (1,298). Linoleic acid content of seed oils ranged from 6.52 % (7,727) to 57.29 % ...
Timoszyk Anna A Laboratory of Biophysics, Department of Biotechnology, Faculty of Biological Sciences, University of Zielona Góra, Zielona Góra, - - 2013
Biological membranes are complex systems which have attracted scientific interest for a long time and for various reasons. The sialic acid-liposome interactions at the molecular level depend on their hydro-lipophilic characteristics. The aim of the present study was to investigate the changes of conformation of the phospholipid (1,2-Diacyl-sn-glycero-3-phosphocholine) and sialic ...
Sanabria-Ríos David J DJ Faculty of Science and Technology, Inter American University of Puerto Rico, Metropolitan campus, PO Box 191293, San Juan, Puerto Rico 00919. Electronic address: - - 2013
The first study aimed at determining the structural characteristics needed to prepare antibacterial 2-alkynoic fatty acids (2-AFAs) was accomplished by synthesizing several 2-AFAs and other analogues in 18-76% overall yields. Among all the compounds tested, the 2-hexadecynoic acid (2-HDA) displayed the best overall antibacterial activity against Gram-positive Staphylococcus aureus (MIC=15.6μg/mL), ...
Maruo Takuya T Veterinary Teaching Hospital, School of Veterinary Medicine, Azabu - - 2013
The cystine transport activity of a lens epithelial cell line originated from a canine mature cataract was investigated. The distinct cystine transport activity was observed, which was inhibited to 28% by extracellular 1mM glutamate. The cDNA sequences of canine cysteine/glutamate exchanger (xCT) and 4F2hc were determined. The predicted amino acid ...
Makino Yoshihide Y Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan, - - 2013
Chiral alcohols are valuable as diverse chemicals and synthetic intermediate materials. Phenylacetaldehyde reductase (PAR) is an enzyme that converts a wide variety of ketones into chiral alcohols with high optical purity. When an alcohol such as 2-propanol is used as a hydrogen donor, PAR itself will also mediate the regeneration ...
Kasahara S S Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan. matuyama@kobe-u.ac.jp - - 2013
Novel ion-gel films containing an amino acid ionic liquid were fabricated by free radical polymerization of vinyl monomers. These high strength materials demonstrated superior CO2 permeability and separation performance.
Hara Yusuke - - 2013
In the present study, a novel gel with semi-interpenetrating (semi-IPN) polymer network that undergo the Belousov-Zhabotinsky (BZ) reaction without the addition of a strong acid (HNO3 or H2SO4) was developed. The required concentrations of the BZ substrates, sodium bromate (NaBrO3) and malonic acid (MA), under these conditions were higher than ...
Mochizuki Toshiki T Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, - - 2014
l-Pyroglutamic acid succinimidyl ester (l-PGA-OSu) and its isotopic variant (l-PGA[d5]-OSu) were newly synthesized and evaluated as the chiral labeling reagents for the enantioseparation of amino acids, in terms of separation efficiency by reversed-phase chromatography and detection sensitivity by ESI-MS/MS. The enantiomers of amino acids were easily labeled with the reagents ...
Qiu Yi-Hua YH a PLA 98th Hospital , Huzhou , 313000 , - - 2013
Laggeric acid (1), a novel 4,5-seco-eudesmane sesquiterpene acid, along with 19 known compounds, was isolated from the MeOH extract of the whole plant of Laggera crispata. The structure of 1 was elucidated to be (4S,5S*,7R*,10R*)-4,5-seco-4,5-dihydroxy-11(13)-eudesmen-12-oic acid on the basis of spectroscopic analysis and a convenient Mosher's method.
Huang Chao C Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of - - 2013
For the first time, corncob acid hydrolysate was used for microbial oil production by the oleaginous yeast Lipomyces starkeyi. After hydrolysis by dilute sulfuric acid, corncob could turn into an acid hydrolysate with a sugar concentration of about 42.3 g/L. Detoxified by overliming and absorption with activated carbon, the corncob hydrolysate ...
Hauck Barbara A - - 2013
High value co-products can greatly improve the feasibility of utilising plant feedstocks for biorefining and biofuel production. Plant polyphenolics have potential application in the pharmaceutical and cosmetic industries. Orchard grass varieties have been noted for accumulation of polyphenolic compounds and the current study determined the soluble phenol profile and content ...
Zhou Mei-Yun MY a Department of Chemistry , Jinan University , Guangzhou , 510632 , P.R. - - 2013
(R)-3-(allylthio)-2-((R)-3-(allylthio)-2-aminopropanamido)propanoic acid was isolated from the bulb of garlic, together with four known amino acids. Its structure was elucidated on the basis of 2D NMR and MS techniques. To the best of our knowledge, (R)-3-(allylthio)-2-((R)-3-(allylthio)-2-aminopropanamido)propanoic acid, which showed antibacterial activity against the Staphylococcus aureus antibiotic resistant strain, was the first ...
Aghofack-Nguemezi Jean J Department of Plant Biology, Faculty of Sciences, University of Dschang, P.O.Box 67, Dschang, - - 2013
It is generally accepted that plastids play a major role in the synthesis of fatty acids. However, the degree of importance of the chloroplast integrity is not yet well established. In order to determine the effects of alterations in the chloroplast ultrastructure on this process Phaseolus aureus seedlings, species very ...
Sung Mina M Department of Civil and Environmental Engineering, KAIST, 291 Daehakno, Yuseong-gu, Daejeon 305-701, Republic of - - 2013
Jerusalem artichoke was investigated as a cheap substrate for the heterotrophic production using a lab yeast strain Cryptococcus sp. Using Response Surface Method, 54.0% of fructose yield was achieved at 12% of dried Jerusalem artichoke powder, 0.57% of nitric acid concentration, 117°C of reaction temperature, and 49min of reaction time. ...
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 ...
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