Search Results
Results 551 - 600 of 4539
< 7 8 9 10 11 12 13 14 15 16 17 >
Ylitervo Päivi P Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden. - - 2014
The release of inhibitory concentrations of acetic acid from lignocellulosic raw materials during hydrolysis is one of the main concerns for 2nd generation ethanol production. The undissociated form of acetic acid can enter the cell by diffusion through the plasma membrane and trigger several toxic effects, such as uncoupling and ...
Gundogdu Muttalip - - 2014
The Hawthorn (Crateagus sp.) mostly occurs around the temperate region of the world with a high number of species, producing a fruit with numerous beneficial effects for human health. The aim of the study was to determine organic acid and sugar contents in the fruit of a number of hawthorn ...
Saifullah Bullo B 0000-0002-0470-6292 Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology(ITMA), Universiti Putra Malaysia, 43400 Serdang, Selangor, - - 2014
Tuberculosis is a lethal epidemic, difficult to control disease, claiming thousands of lives every year. We have developed a nanodelivery formulation based on para-aminosalicylic acid (PAS) and zinc layered hydroxide using zinc nitrate salt as a precursor. The developed formulation has a fourfold higher efficacy of PAS against mycobacterium tuberculosis ...
Mohadjerani Maryam M Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, I. R. - - 2014
Objectives: The objective of this study was to analyze the fatty acid content, antioxidant, and antibacterial activities of hydro-methanolic extract of Adonis wolgensis L. (A. wolgensis L.) growing wild in north of Iran. Materials and Methods: Oils of A. wolgensis L. was obtained by means of Soxhlet apparatus from leaves ...
Barahuie Farahnaz F Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra - - 2014
We characterize a novel nanocomposite that acts as an efficient anticancer agent. This nanocomposite consists of zinc layered hydroxide intercalated with protocatechuate (an anionic form of protocatechuic acid), that has been synthesized using a direct method with zinc oxide and protocatechuic acid as precursors. The resulting protocatechuic acid nanocomposite (PAN) ...
Weng Li-Chi LC 1] Graduate Institute of Marine Biotechnology, National Dong-Hwa University, Pingtung, 944 Taiwan - - 2014
The stability of cnidarian-dinoflagellate (genus Symbiodinium spp.) endosymbioses depends on the regulation of nutrient transport between Symbiodinium populations and their hosts. Previously, we successfully induced the production of lipid droplets in the free-living cultured Symbiodinium (clade B) under the nitrogen-deprivation condition for 5 days. Therefore, the present study aimed at ...
Kabeya Naoki N Research Fellow of the Japan Society for the Promotion of Science, 1-8 Ichiban-cho, Chiyoda-ku, Tokyo 102-8472, Japan; Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, - - 2013
Marine fishes are generally unable to produce sufficient quantities of eicosapentaenoic acid (EPA; 20:5n-3) and docosahexaenoic acid (DHA; 22:6n-3) for their normal growth and survival, as the key fatty acid-metabolizing enzymes in the EPA and DHA biosynthetic pathway are limited. It is therefore necessary to supplement cultured marine fish species ...
Smet Lieselotte De LD Laboratory of Pharmaceutical Technology, Ghent University, Ghent, - - 2013
The aim of the study was to increase the bioavailability of itraconazole (ITRA) using nanosized cocrystals prepared via wet milling of ITRA in combination with dicarboxylic acids. Wet milling was used in order to create a nanosuspension of ITRA in combination with dicarboxylic acids. After spray-drying and bead layering, solid ...
Hamberg Mats M Karolinska Institutet, - - 2013
The CYP74 family of cytochrome P450 enzymes consisting of allene oxide synthase, divinyl ether synthase and hemiacetal synthase has important roles in plant oxylipin biosynthesis, transforming lipoxygenase-generated fatty acid hydroperoxides into a range of biologically active compounds. Biochemical and phylogenetic studies have shown that CYP74-related enzymes are found also in ...
Stoffel Wilhelm W Center of Molecular Medicine (CMMC) Laboratory of Molecular Neurosciences, Institute of Biochemistry University of Cologne, Cologne, - - 2013
Δ-6-fatty acid desaturase (FADS2) is the key enzyme in the biosynthesis of polyunsaturated fatty acids (PUFAs), the essential structural determinants of mammalian membrane lipid-bilayers. We developed the auxotrophic fads2(-/-) mouse mutant to assess the enigmatic role of ω3- and ω6-PUFAs in lipid homeostasis, membrane structure and function. Obesity resistance is ...
Oldham C L CL Department of Plant and Wildlife Sciences, Brigham, Young University, Provo, UT, - - 2013
The purpose of this study was to determine the diurnal composition and concentration of volatile fatty acids (VFA) and to determine VFA composition and concentration differences between stomach compartment 1 (C1) and caecum of alpacas fed grass and alfalfa hay. The study was divided into two experiments. In Experiment 1 ...
Ahsan Laboni L Limerick Pulp and Paper Centre and Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada. Electronic address: - - 2013
This work investigated the feasibility of recovering and concentrating sugars and acetic acid (HAc) from prehydrolysis liquor (PHL) of the kraft-based dissolving pulp process prior to fermentation of hemicellulosic sugars, by the combination of activated carbon adsorption, nanofiltration (NF) and reverse osmosis (RO) processes. To reduce the fouling PHL was ...
Mostefaoui Houda H Zoophytiatrie Laboratory, Department of Agronomy, Faculty of Agricultural Sciences and Veterinary, University Saad Dahleb, 9000 Blida, - - 2014
Aphis spiraecola and Aphis gossypii cause harmful damages on clementine tree orchards. Weekly surveys measured the abundance of aphids (larvae, winged and wingless adults) as well as of auxiliary insects and parameters of energy metabolism. Correlatively, soluble carbohydrates, total free amino acids, free proline and condensed tannins were quantified in ...
Urbaniak Michael D MD Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, - - 2013
The zinc-metalloenzyme GlcNAc-PI de-N-acetylase is essential for the biosynthesis of mature GPI anchors and has been genetically validated in the bloodstream form of Trypanosoma brucei, which causes African sleeping sickness. We screened a focused library of zinc-binding fragments and identified salicylic hydroxamic acid as a GlcNAc-PI de-N-acetylase inhibitor with high ...
Motter Francine A FA Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Cx. P. 19046 Centro Politécnico, Curitiba 81531-980, Paraná, Brazil; VTT Technical Research Centre of Finland, Tietotie 2, Espoo, P.O. Box 1500, 02044 VTT, - - 2013
In the genome of Aspergillus niger five genes were identified coding for proteins with homologies to sugar acid dehydratases. The open reading frames were expressed in Saccharomyces cerevisiae and the activities tested with a library of sugar acids. Four genes were identified to code for proteins with activities with sugar ...
Modirroosta Bentol Hoda BH Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Zanjan, Zanjan, Islamic Republic of - - 2013
Compositional studies comparing transgenic with non-transgenic counterpart plants are almost universally required by governmental regulatory bodies. In the present study, two T2 transgenic cotton lines containing chitinase (Line 11/57) and Bt lines (Line 61) were compared with non-transgenic counterpart. To do this, biochemical characteristics of leaves and seeds, including amino ...
Wendlinger Christine C University of Hohenheim, Institute of Food Chemistry (170 b), Garbenstraße 28, D-70593 Stuttgart, - - 2014
Erucic acid is a typical constituent of mustard or rape. Foodstuff with a high content of erucic acid is considered undesirable for human consumption because it has been linked to myocardial lipidosis and heart lesions in laboratory rats. As a result, several countries have restricted its presence in oils and ...
Broadbent J R JR Department of Nutrition, Dietetics, and Food Science, Utah State University, 8700 Old Main Hill, Logan, UT, 84322-8700, USA, - - 2013
Lactic acid is an important industrial chemical commonly produced through microbial fermentation. The efficiency of acid extraction is increased at or below the acid's pKa (pH 3.86), so there is interest in factors that allow for a reduced fermentation pH. We explored the role of cyclopropane synthase (Cfa) and polysorbate ...
Wolf Cynthia J CJ Developmental Toxicology Branch, Toxicity Assessment Division, National Health and Environmental Effects Research Laboratory, ORD, U.S. EPA Research Triangle Park, NC 27711. Electronic address: - - 2013
Perfluoroalkyl acids (PFAAs) are found globally in the environment, detected in humans and wildlife, and are typically present as mixtures of PFAA congeners. Mechanistic studies have found that responses to PFAAs are mediated in part by PPARα. Our previous studies showed that individual PFAAs activate PPARα transfected into COS-1 cells. ...
Kim Hyoung-Jun HJ Department of Chemistry and Medical Chemistry, College of Science and Technology, Yonsei University, Wonju, Gangwon-do 220-710, Republic of - - 2013
We have successfully prepared nanohybrids of biofunctional ferulic acid and layered double hydroxide nanomaterials through reconstruction and exfoliation-reassembly routes. From X-ray diffraction and infrared spectroscopy, both nanohybrids were determined to incorporate ferulic acid molecules in anionic form. Micrsocopic results showed that the nanohybrids had average particle size of 150 nm with ...
Sato Eisuke E School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, Japan. Electronic address: - - 2013
BPA used in BNCT has a similar structure to some essential amino acids and is transported into tumor cells by amino acid transport systems. Previous study groups have tried various techniques of loading BPA to increase intracellular boron concentration. CHO-K1 cells demonstrate system L (LAT1) activity and are suitable for ...
Zhang Yongming Y Department of Environmental Science and Engineering, College of Life and Environmental Science, Shanghai Normal University , Shanghai, 200234, People's Republic of - - 2013
Pyridine, a nitrogen-containing heterocyclic compound, is slowly biodegradable, and coupling biodegradation with UV photolysis is a potential means to accelerate its biotransformation and mineralization. The initial steps of pyridine biodegradation involve mono-oxygenation reactions that have molecular oxygen and an intracellular electron carrier as cosubstrates. We employed an internal circulation baffled ...
Shou Qingyao Q Southern Cross Plant Science, Southern Cross University, PO Box 157, Lismore NSW 2480, Australia. Electronic address: - - 2013
Five anthranilic acid derivatives, a mixture I of three new compounds 11'-hexadecenoylanthranilic acid (1), 9'-hexadecenoylanthranilic acid (2), and 7'-hexadecenoylanthranilic acid (3), as well as a new compound 9,12,15-octadecatrienoylanthranilic acid (4) together with a new natural product, hexadecanoylanthranilic acid (5), were isolated from Geijera parviflora Lindl. (Rutaceae). Their structures were elucidated ...
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 ...
< 7 8 9 10 11 12 13 14 15 16 17 >