Search Results
Results 1 - 50 of 1869
1 2 3 4 5 6 7 8 9 10 >
Parma L L Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, - - 2014
The study of lipids and fatty acids (FAs) has been used in the assessment of egg quality because their composition can influence the fertilization rate, hatching, survival and growth of marine fish larvae. For these reasons, the lipid content (TL) and fatty acid composition of common sole (Solea solea) eggs ...
Pesek Jelena J Department of Bioorganic Chemistry, Max-Planck-Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745 Jena, Germany. - - 2014
In the regurgitate (foregut content) of Spodoptera larvae we found high concentrations (0.5-5 mM) of 8-hydroxyquinoline-2-carboxylic acid (8-HQA). In a survey of different lepidopteran species, this compound was only detected in species belonging to the family of Noctuidae. 8-HQA was shown to derive from tryptophan metabolism. The amount of 8-HQA ...
Rismani-Yazdi Hamid H Phycal Inc., 51 Alpha Park, Highland Heights, OH, 44143, USA, - - 2014
A mixed trophic state production process for algal lipids for use as feedstock for renewable biofuel production was developed and deployed at subpilot scale using a green microalga, Auxenochlorella (Chlorella) protothecoides. The process is composed of two separate stages: (1) the photoautotrophic stage, focused on biomass production in open ponds, ...
Tunholi-Alves Vinícius Menezes VM Departamento de Ciências Fisiológicas, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Km7, BR 465, Antiga estrada Rio-São Paulo, 23890-000 Seropédica, RJ, Brazil; Curso de Pós-Graduação em Ciências Veterinárias, Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Km7, BR 465, Antiga estrada Rio-São Paulo, 23890-000 Seropédica, RJ, Brazil. Electronic address: - - 2014
The effect of experimental infection by different parasitic loads of Angiostrongylus cantonensis (Nematode, Metastrongylidae) on the activities of the aminotransferases and concentration of total proteins, uric acid and urea in the hemolymph of Achatina fulica (Mollusca, Gastropoda) were investigated. There was a significant decrease in the concentration of total proteins ...
Ling Xueping X Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR - - 2014
A new isolated Schizochytrium sp. LU310 from the mangrove forest of Wenzhou, China, was found as a high producing microalga of docosahexaenoic acid (DHA). In this study, the significant improvements for DHA fermentation by the batch mode in the baffled flasks (i.e. higher oxygen supply) were achieved. By applied the ...
Luu Phuong Duc PD Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan; Faculty of Chemistry, Hanoi University of Science, VNU, 19 Le Thanh Tong St., Hoan Kiem District, Hanoi, Viet Nam. Electronic address: - - 2014
Biodiesel fuels (BDFs) was successfully produced from Vietnamese Jatropha curcas oil with high content of free fatty acids (FFAs) in two stages. In the first stage, the esterification process was carried out with the optimal conditions as follows; a methanol-to-FFAs molar ratio of 6:1, 1wt% H2SO4, at a temperature of ...
Han K J KJ Southeast Region Office, Louisiana State University Agricultural Center, Hammond, LA 70403 USA - - 2014
In southeastern regions of the US, herbage systems are primarily based on grazing or hay feeding with low nutritive value warm-season perennial grasses. Nutritious herbage such as annual ryegrass (Lolium multiflorum Lam.) may be more suitable for preserving as baleage for winter feeding even with more intensive production inputs. Emerging ...
Flores-Alatorre H L - - 2014
The concentration of carminic acid was found to vary based on the size and life cycle stage of the cochineal, Dactylopius coccus Costa. The concentration of carminic acid in cochineal eggs, nymph I, nymph II, fertilized adults, ovipositing adults, and sterile adults female was measured using capillary electrophoresis, and the ...
Guo Sheng S Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, - - 2015
Jujube (Ziziphus jujuba) fruit is widely consumed as food and traditional Chinese medicine in Asian countries due to its potential effects for human health. To facilitate selection of the maturity stage providing optimum health benefits, jujube fruits were analysed at six stages of growth (S1-6) for triterpenic acids, nucleosides, nucleobases, ...
Wallin Erika A - - 2014
A major interest in the gall-inducing thrips of Australia began with the discovery that some species have eusocial colonies. The origin of social castes remains one of the outstanding questions in evolutionary biology. The inference of the ancestral stage from study of solitary species is important to understanding the evolutionary ...
Holm Lars L 1Bispebjerg Hospital and University of Copenhagen, Faculty of Health and Medical - - 2014
Muscle protein synthesis (MPS) rate is conventionally determined by obtaining two or more tissue biopsies during a primed continuous infusion of a stable isotopically labeled amino acid. The purpose of the present study was to test whether tracer priming given as a flooding dose, thereby securing an instantaneous labeling of ...
Amory John K JK Department of Medicine, University of Washington, Seattle, Washington. Electronic address: - - 2014
To determine whether decreased testicular levels of enzymes necessary for retinoic acid biosynthesis were associated with male infertility, as retinoic acid is known to be necessary for spermatogenesis. Observational analysis of testicular tissue samples, sperm indices, and serum hormone concentrations. Two infertility centers in Chile. 32 infertile men and 11 ...
Fuentes Ricardo R Department of Cell and Developmental Biology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19104, - - 2014
A new procedure for improved in situ hybridization of zebrafish whole-mount oocytes, embryos, and early larvae is described. The procedure relies on the simultaneous fixation/permeabilization of samples using formaldehyde as fixative and short C-chain aliphatic carboxylic acids, particularly glacial acetic acid, as permeabilizers. As compared with in situ hybridization performed ...
Alvite Gabriela G Sección Bioquímica, Facultad de Ciencias, Universidad de la República, Montevideo, - - 2014
Two fatty acid binding proteins, MvFABPa and MvFABPb were identified in the parasite Mesocestoides vogae (Platyhelmithes, Cestoda). Fatty acid binding proteins are small intracellular proteins whose members exhibit great diversity. Proteins of this family have been identified in many organisms, of which Platyhelminthes are among the most primitive. These proteins ...
Hoffman Arthur - - 2013
Traditional surveillance in patients with Barrett's esophagus (BE) has relied on random biopsies. Targeted biopsies that use advanced imaging modalities may significantly improve detection of specialized columnar epithelium (SCE). We compared the efficacy of targeted biopsies that used i-scan or acetic acid to random biopsies in the detection of SCE. ...
Kanaley Jill A JA Mayo Clinic, Rochester, - - 2013
We hypothesized that insulin alters plasma free fatty acid (FFA) trafficking into intramyocellular (im) long-chain acylcarnitines (imLCAC) and triglycerides (imTG). Overnight-fasted adults (n = 41) received intravenous infusions of [U-¹³C]palmitate (0400-0900 h) and [U-¹³C]oleate (0800-1400 h) to label imTG and imLCAC. A euglycemic-hyperinsulinemic (1.0 mU·kg fat-free mass⁻¹·min⁻¹) clamp (0800-1400 h) ...
Nya-Ngatchou J J JJ Departments of Medicine, University of Washington, Seattle, WA 98195, - - 2013
Intratesticular retinoic acid is necessary for spermatogenesis, but the relationship between intratesticular retinoic acid and sperm quality in man has not been studied. We hypothesized that intratesticular concentrations of retinoic acid would be lower in men with abnormal semen analyses compared to men with normal semen analyses. We recruited men ...
Agler Matthew T - - 2012
To maximize the production of carboxylic acids with open cultures of microbial consortia (reactor microbiomes), we performed experiments to understand which factors affect the community dynamics and performance parameters. We operated six thermophilic (55°C) bioreactors to test how the factors: i. biomass pretreatment; ii. bioreactor operating conditions; and iii. bioreactor ...
Brasile Giuseppina - - 2012
An efficient method for the synthesis of long-chain α,ω-diamino acids, starting from natural α-amino acids, has been developed. The long-chain skeleton has been generated through condensation between a protected aldehyde, derived from L: -aspartic acid, and an ylide obtained from an ω-hydroxy-alkyl phosphonium salt. After conversion of the ω-hydroxy group ...
Dobretsov G E - - 2012
Albumin is a carrier of nonesterified long-chain fatty acids and many other ligands. The status of its binding centers was studied for various proportions of nonesterified long-chain fatty acids and albumin as exemplified by palmitic acid. The status of the binding center was tested by recording K-35 probe fluorescence decay ...
Swoboda Marko M B CUBE, Center for Molecular Bioengineering, Technische Universität Dresden, Arnoldstraße 18, 01307 Dresden, - - 2012
Over the past years, bottom-up bionanotechnology has been developed as a promising tool for future technological applications. Many of these biomolecule-based assemblies are characterized using various single-molecule techniques that require strict anaerobic conditions. The most common oxygen scavengers for single-molecule experiments are glucose oxidase and catalase (GOC) or protocatechuate dioxygenase ...
Voigt Christian C - - 2012
In contrast to birds, bats are possibly limited in their capacity to use body fat as an energy source for long migrations. Here, we studied the fuel choice of migratory Pipistrellus nathusii (approximate weight: 8 g) by analysing the stable carbon isotope ratio (δ(13)C(V-PDB)) of breath and potential energy sources. ...
Barbieri Manuela - - 2012
The fate of the three environmentally relevant β-blockers atenolol, metoprolol and propranolol has been studied in batch experiments involving aquifer material and nitrate reducing conditions. Results from the about 90d long tests indicate that abiotic processes, most likely sorption, jointly with biotransformation to atenololic acid were responsible for the 65% ...
Zhang Dong Qing - - 2012
This study evaluated the effect of continuous and batch feeding on the removal of 8 pharmaceuticals (carbamazepine, naproxen, diclofenac, ibuprofen, caffeine, salicylic acid, ketoprofen and clofibric acid) from synthetic wastewater in mesocosm-scale constructed wetlands (CWs). Both loading modes were operated at hydraulic application rates of 5.6 cm day(-1) and 2.8 cm day(-1). Except for ...
Fuereder Markus - - 2012
Teicoplanin aglycone-based chromatography columns (Chirobiotic TAG) enable amino acid enantioseparation with aqueous mobile phases, which perfectly accommodates the distinct hydrophilicity of most amino acids. Therefore, this stationary phase constitutes a promising option in particular for preparative-scale separations that require high feed concentrations for economic operation. However, detailed studies revealed a ...
Chen Lijun - - 2012
This paper introduces a novel process for recovery and refining of l-lactic acid from a fermentation broth. The use of a solvent extraction step, in the novel approach, has significant impacts on the following centrifugal short-path distillation conditions (operating pressure, evaporator temperature and feed flow rate). As the conditions were ...
Mathia František - - 2012
Bi(OTf)(3)·nH(2)O was found to be an efficient promoter of the cyclisative hydroamination of unactivated alkenyl sulfonamides, giving rise to the N-protected 2-methyl pyrrolidines in good to excellent yields (up to 95%). Based on control experiments, a joint Lewis acid-Brønsted acid catalysis might be in operation, or triflic acid itself, generated ...
Conde-Frieboes Kilian - - 2012
We report in vitro and in vivo data of new α-melanocyte-stimulating hormone (α-MSH) analogues which are N-terminal modified with a long chain fatty acid derivative. While keeping the pharmacophoric motif (d-Phe-Arg-Trp) fixed, we tried to improve selectivity and physicochemical parameters like solubility and stability of these analogues by replacing amino ...
Harden Charlotte J - - 2012
Long-chain fatty acids have been shown to suppress appetite and reduce energy intake (EI) by stimulating the release of gastrointestinal hormones such as cholecystokinin (CCK). The effect of NEFA acyl chain length on these parameters is not comprehensively understood. An in vitro screen tested the capacity of individual NEFA (C12 ...
Rendina Victor L - - 2012
A new protocol for titrating nonstabilized diazoalkane solutions by quantitative (19)F NMR is reported. An excess of 2-fluorobenzoic acid dissolved in CDCl(3) is treated with the diazoalkane solution at a low temperature, immediately forming the corresponding 2-fluorobenzoate ester upon warming. A significant difference in the (19)F chemical shift between the ...
Coblentz W K - - 2012
During 2009 and 2010, alfalfa (Medicago sativa L.) hays from 2 cuttings harvested from the same field site were used to evaluate the effects of a propionic acid-based preservative on the storage characteristics and nutritive value of hays stored as large round bales. A total of 87 large round bales ...
Serrano-Medina A - - 2011
The synthesis and properties of thermal/pH-sensitive core-shell copolymer nano/microgels were investigated. The crosslinked core consisted of N-isopropylacrylamide (NIPAAm) while the shell was stabilized by poly(ethylene glycol) methyl ether methacrylate (PEGMA) and 2-methacryloyloxybenzoic acid (2MBA) using a "one pot" soapless emulsion polymerization method. Monodisperse particles were produced with average hydrodynamic diameters ...
Kurita Y - - 2011
Chitosan was reacted with four alkyl halides, monobromoacetic acid, benzyl bromide, 2-bromoethanol, and monochloroacetic acid, in the presence of NaHCO(3) in water. Chemical structures, degrees of substitution, and degrees of polymerization of reaction products were studied by FT-IR, NMR, SEC-MALLS, and elementary analyses. All alkyl groups were introduced selectively into ...
Ré Martín D - - 2011
BACKGROUND: Tomato fruit is of prime importance owing to its qualities for human nutrition and its economic value. In order to extend its commercial life, it is harvested at mature but unripe stages and stored at low temperatures. The goal of this work was to study the influence of harvest ...
Watanabe Nobuko - - 2011
Diphenylparabanic acid 4 was found to react with >2 eq of organolithiums at -78 degrees C to effectively give the corresponding symmetrical alpha-diketones 5. However, upon treatment with 1 eq of organolithium, 4 gave mainly 5-substituted 5-hydroxyimidazolidine-2,4-diones 7. On the other hand, Grignard reagents were less reactive toward 4 at ...
Yemiş Gökçe Polat - - 2011
Preservatives could be part of an effective intervention strategy for the control of Cronobacter species in foods, but few compounds with the desired antimicrobial properties have been identified to date. We examined the antibacterial activity of vanillin, ethyl vanillin, and vanillic acid against seven Cronobacter spp. in quarter-strength tryptic soy ...
Bromberg Lev - - 2011
Porous materials based on chromium (III) terephthalate metal organic frameworks (MIL-101) and their composites with phosphotungstic acid (PTA) were studied as heterogeneous acid catalysts in aldehyde-alcohol reactions exemplified by acetaldehyde-phenol (A-P) condensation and dimethylacetal formation from benzaldehyde and methanol (B-M reaction). The MIL-101 was synthesized solvothermically in water, and the ...
Stefanov Ivan - - 2011
The feasibility of Raman spectroscopy in combination with partial least squares (PLS) regression for determination of individual or grouped trans monounsaturated fatty acids (trans MUFA) and conjugated linoleic acids (CLA) in milk fat is demonstrated using spectra obtained at two temperature conditions: room temperature and after freezing at -80oC. The ...
Chen Zhuo - - 2011
Stichococcus, a genus of green algae, distributes in ice-free areas throughout Antarctica. To understand adaptive strategies of Stichococcus to permanently cold environments, the physiological responses to temperature of two psychrotolerants, S. bacillaris NJ-10 and S. minutus NJ-17, isolated from rock surfaces in Antarctica were compared with that of one temperate ...
Rosa Antonella A Dipartamento di Biologia Sperimentale, Università degli Studi di Cagliari, Cagliari, Italy. - - 2012
The salted and semidried mullet (Mugil cephalus) ovary product (bottarga) is proposed as an important source of the long-chain n-3 polyunsaturated fatty acids (PUFA), eicosapentaenoic acid, and docosahexaenoic acid. In this work, we investigated the extent of lipid oxidation and browning of grated bottarga samples during 7 mo of storage ...
McClintock Sean Peter - - 2011
A new method for the generation of dicationic species via ionization of diols is described. The method makes use of milder reagents at room temperatures, an advantage over use of Magic Acid at -78 degrees C. A series of mono- and dications were synthesized successfully, including previously unattainable species.
Hashem Ahmed Abdel Rahman - - 2012
The aim of this study was to compare the effect of acidic environment on the dislodgement resistance of mineral trioxide aggregate (MTA) and Bioaggregate (Innovative BioCeramix, Vancouver, Canada) when used as perforation repair materials. Eighty, human, mandibular molars were used. Perforations were made in the furcation of each molar and ...
Bicho Natalina Cavaco - - 2011
Arabica and Robusta coffee beans were roasted at 220 ± 10°C for 7, 9 and 11 min to identify chemical descriptors in the beverages. The pH of the beverages showed the lowest value in the medium roasting level. In each degree of browning, the soluble solids content remained slightly higher in Arabica drinks. ...
Ujihara Kazuya - - 2011
Development of pyrethroids for household use and recent advances in the syntheses of (1R)-trans-chrysanthemic acid, the acid moiety of most of the household pyrethroids, are reviewed. As another important acid moiety, we discovered norchrysanthemic acid to have a significant vapor action at room temperature when esterified with fluorobenzyl alcohols. In ...
Findrik Zvjezdana - - 2011
In this paper esterification of ethanol and lactic acid catalyzed by Candida antarctica B (Novozyme 435) in ionic liquid (Cyphos 104) was studied. The influence of different variables on lipase enantioselectivity and lactic acid conversion was investigated. The variables investigated were ionic liquid mass/lipase mass ratio, water content, alcohol excess ...
Madeo Moira - - 2011
Understanding the molecular basis of acid tolerance in the food-borne pathogen Listeria monocytogenes is important as this property contributes to survival in the food-chain and enhances survival within infected hosts. The aim of this study was to identify genes contributing to acid tolerance in L. monocytogenes using transposon mutagenesis and subsequently ...
Dang Tuan Thanh - - 2011
The generation of a hidden Brønsted acid as a true catalytic species in hydroalkoxylation reactions from metal precatalysts has been clarified in case studies. The mechanism of triflic acid (CF(3)SO(3)H or HOTf) generation starting either from AgOTf in 1,2-dichloroethane (DCE) or from a Cp*RuCl(2)/AgOTf/phosphane combination in toluene has been elucidated. ...
Hachana Y - - 2011
For yoghurts were made from milk with different levels of somatic cell count (SCC) (low 95,000 cells ml(- 1), intermediate 398,000 cells ml(- 1) and high 1,150,000 cells ml(- 1)). Yoghurt samples were analysed for the degree of proteolysis, lipolysis (free fatty acid (FFA) content), acidity, pH and apparent viscosity on days 1, 14 and 28. The SCC had ...
Sui Xian-Wei - - 2011
Fast pyrolysis of bagasse pretreated by sulfuric acid was conducted in a fixed bed reactor to prepare levoglucosenone (LGO), a very important anhydrosugar for organic synthesis. The liquid yield and LGO yield were studied at temperatures from 240 to 350°C and sulfuric acid loadings from 0.92 to 7.10wt.%. An optimal ...
Boonmanumsin P - - 2011
Microwave-assisted ammonium hydroxide (NH(4)OH) followed by phosphoric acid (H(3)PO(4)) treatments were used to release monomeric sugars from Miscanthus sinensis grown in Cha-Chueng-Sao province, Thailand. Treatment with 1.0% (w/v) NH(4)OH, 15:1 liquid-to-solid ratio (LSR) at 120°C temperature for 15min liberated 2.9g of monomeric sugars per 100g of dried biomass, whereas the ...
1 2 3 4 5 6 7 8 9 10 >