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Peng Qiang - - 2013
An immunologically active pectin, named LRGP5, was firstly isolated from the fruits of Lycium ruthenicum Murr. It contained rhamnose, arabinose, xylose, galactose and galacturonic acid in the molar ratio of 1.0:2.2:0.5:1.2:4.7. Its molecular weight was estimated to be approximately 1.37×10(5)Da by high performance gel permeation chromatography. The structure was elucidated ...
Giraud William W Laboratoire de Génie chimique, UMR CNRS 5503, 118 route de Narbonne, 31062 CEDEX 9, Toulouse, - - 2013
This study shows that electroanalysis may be used in vanillin biotechnological production. As a matter of fact, vanillin and some molecules implicated in the process like eugenol, ferulic acid, and vanillic acid may be oxidized on electrodes made of different materials (gold, platinum, glassy carbon). By a judicious choice of ...
Blanco Carlos A CA Dpto. Ingeniería Agrícola y Forestal (Tecnología de los Alimentos), E.T.S. Ingenierías Agrarias, 34004 Palencia. Universidad de Valladolid, - - 2013
Iso-α-acids and their chemically modified variants are responsible of the beer bitterness and play a disproportionately large role in the final quality of beer. The current study was undertaken to predict the degradation of commercial lager beers related to changes in the concentration of trans-iso-α-acids during storage by using Liquid ...
Kupiainen-Määttä Oona - - 2013
Quantum chemical calculations have been performed on negatively charged nitric acid - sulfuric acid - dimethylamine clusters. The cluster energies were combined with a kinetic model to study the chemical ionization of sulfuric acid molecules and sulfuric acid - dimethylamine clusters with nitrate ions. Both the sulfuric acid monomer and ...
Rand Amy Ann - - 2013
The biotransformation of fluorotelomer based compounds yields saturated and unsaturated fluorotelomer aldehydes (FTALs and FTUALs, respectively) and carboxylic acids (FTCAs and FTUCAs, respectively) as intermediate metabolites that subsequently transform to perfluorinated carboxylic acids (PFCAs). Previous studies have demonstrated that the FTCAs and FTUCAs are 1 to 5 orders of magnitude ...
Jovanović Vesna B - - 2013
During investigation of the changes of Cys34 thiol group of human serum albumin (HSA) (isolated by affinity chromatography with Cibacron Blue (CB)) in diabetes, we found that HSA-SH content was higher (11-33%) than total serum thiol content. The influence of fatty acids (FA) binding to HSA on this discrepancy was ...
Marangoni Franca F NFI - Nutrition Foundation of Italy, Viale Tunisia 38, 20124 Milano, Italy. Electronic address: - - 2014
The relationship between whole blood fatty acids and myocardial infarction (MI) risk has not been analyzed in detail, especially in Mediterranean countries. The AGE-IM (Acidi Grassi Essenziali e Infarto Miocardico) study was planned to examine the relationships between MI, whole blood fatty acids and the diet in an Italian cohort. ...
Wu Yi-Nan - - 2013
We report the strategy of using the cationic surfactant cetyltrimethylammonium bromide (CTAB) and amino acid l-histidine (His) as co-templates to produce hierarchical ZIF-8 in an aqueous system at room temperature. The hierarchical ZIF-8 had both meso- and microporous structure, resulting in a high mesopore volume as well as specific surface ...
Srivastava Pramod Kumar - - 2013
Acid phosphatase isolated from Vigna aconitifolia seeds was immobilized onto glutaraldehyde activated chitosan beads by crosslinking method. Chitosan beads activated with 2% of glutaraldehyde have demonstrated maximum immobilization yield (∼83%). The immobilized enzyme showed optimum activity at pH 7.0, while soluble form was maximally active in acidic range (pH5.0). With ...
Periche Angela - - 2013
Stevia, a non-caloric natural sweetener with beneficial properties and considerable antioxidants and amino acids, is increasingly consumed as an infusion. This work evaluates the influence of the conditions (temperature: 50, 70 or 90 °C and time: 1, 5, 20 or 40 min) applied to obtain Stevia infusions, on antioxidants (total phenols, flavonoids ...
Jindal Kajal K Department of Physics and Astrophysics, University of Delhi, Delhi 110007, - - 2013
A third generation uric acid biosensor has been developed by exploiting the electrocatalytic functionality of nitrogen (N) doped zinc oxide (ZnO:N) thin film matrix deposited using pulsed laser deposition technique. The electrochemistry of ZnO:N thin film based electrode is investigated by using electrochemical impedance spectroscopy and cyclic voltammetry. The obtained ...
Lee Je-Hyuk JH Department of Food and Nutrition, Kongju National University, Chungnam 340-702, - - 2013
The aim of this study was to develop rice wine (Yakju) containing various amounts and particle sizes of ginseng powder and to analyze the physicochemical characteristics and content of ginsenosides in ginseng-Yakju. Soluble solid content, pH, ethanol concentration, acidity, amino acid content, and evaluation of preference showed no difference between ...
Guirao Miguelina - - 2013
The effect of ethanol in modulating the intensity and duration of the perceived sourness induced by citric acid was studied. Magnitude Estimation-Converging Limits method was applied to rate the sourness of seven solutions (3-70 mM) of citric acid in aqueous solution presented alone and mixed with 8% V/V or 15% ...
Shankar Sini - - 2013
Esterification of lauric acid with n-butanol, catalyzed by immobilized Candida antarctica lipase (CAL) in aqueous-organic biphasic solvent system was studied. Effects of various reaction parameters on esterification were investigated, such as type and amount of solvent, amount of buffer, pH, temperature, speed of agitation, amount of enzyme, butanol and lauric ...
Kokkinidou S - - 2013
Degradation of the mycotoxin patulin between 25 and 85 °C without and with added ascorbic acid was studied, and the effectiveness of linear and nonlinear models for predicting reaction rates was compared. In agreement with previous reports, ascorbic acid significantly increased (P ≤ 0.05) the rate of patulin degradation at all ...
Neumann Wilma - - 2013
Reduction of hydroxy-functionalised carbaboranyl carboxylic acids by organolithium reagents yields the corresponding tertiary alcohols. This is in contrast to exo-polyhedral C-C bond cleavage of unsubstituted carbaboranyl carboxylic acids upon reaction with lithium organyls. The proposed dimeric contact ion pairs may also explain the formation of tertiary alcohols instead of the ...
Lang Roman - - 2013
Quantitative analysis of the bioactives trigonelline (1), N-methylpyridinium (2), caffeine (3) and caffeoyl quinic acids (4) in a large set of roasted Arabica (total sample size n=113) and Robusta coffees (total sample size n=38) revealed that the concentration of 1 and 4 significantly correlated with the roasting color (P<0.001, two ...
Yurttas Zeynep Sevimli - - 2013
This study assessed the application of an antibrowning solution using vacuum impregnation (VI) and then electron-beam irradiation as a means to extend the shelf life of sliced white button mushrooms (Agaricus bisporus). A preliminary study helped to determine the best antibrowning solution and VI process parameters. Mushroom slices were impregnated ...
Ito Ryo - - 2013
Aim: Previous epidemiological studies demonstrated that the ratio of n-6 to n-3 polyunsaturated fatty acids is associated with cardiovascular diseases. We herein investigated whether the beneficial effect of highly purified eicosapentaenoic acid(EPA) on arterial stiffness is associated with changes in the ratio of polyunsaturated fatty acids, such as EPA, docosahexaenoic ...
You Qing-Ping - - 2013
Compounds with strong intramolecular hydrogen bonds (e.g., salicylic acid) have weak intermolecular hydrogen bonding interactions between them and functional monomers in the imprinting process. Consequently, the corresponding molecularly imprinted polymers (MIPs) have no specific adsorption ability. Here, the first magnetic dummy MIPs (MDMIPs) based on benzonic acid as dummy template ...
Cong Yongzheng - - 2013
An isotachophoresis (ITP) separation of eight lanthanides on a serpentine PMMA microchip with a tee junction and a 230 mm long serpentine channel is described. The cover of the PMMA chip is 175 μm thick so that a contactless conductivity detector (C(4) D) in microchip mode can be used to ...
Liu Ping - - 2013
It is found that the plasmon effect of silver nanoparticles (AgNPs) helps to enhance the fluorescence intensity of the quercetin (Qu) and nucleic acids system. Qu exhibited strong fluorescence enhancement when it bound to nucleic acids in the presence of AgNPs. Based on this, a sensitive method for the determination ...
Komy Zanaty R - - 2013
Equilibrium and kinetics of Cu(2+) adsorption onto soil minerals (kaolinite and hematite) in the absence and presence of humic acid have been investigated under various conditions. The influences of ionic strength, pH and solution cations on the rate of the adsorption have been studied. The rate and the amount of ...
Yuan Xian-Zheng - - 2013
In order to facilitate the application of Anaerobic Digestion Model No. 1 (ADM1), an approach for a detailed calculation of stoichiometric coefficients for amino acids acidogenesis during the anaerobic digestion of blue algae is presented. The simulation results obtained support the approach by good predictions of the dynamic behavior of ...
Aladedunye Felix F Max Rubner-Institut (MRI), Federal Research Institute for Nutrition and Food, Department for Safety and Quality of Cereals, Working Group for Lipid Research, Schützenberg 12, D-32756 Detmold, Germany. Electronic address: - - 2014
Recently, we reported the synthesis of a series of dihydrocaffeic acid amides and evaluated their performance as antioxidants for frying applications using a model frying. In the present study, the possibility of a synergy between the amide, N-propyl-N-benzyl-3-(3,4 dihydroxyphenyl)propanamide (DCA) and phosphatidylcholine (PC) was explored in a 6-day actual frying ...
Gou Faliang - - 2013
Two series dyes of azo-bridged zinc porphyrins have been devised, synthesized and performed in dye-sensitized solar cells. In which, salicylic acids and azo groups were introduced as new anchoring group and π-conjugated bridge via simple synthetic procedure. The representation of the new dyes has been investigated by optical, photovoltaic, and ...
Aydoğan Cemil - - 2013
Chiral ligand exchange enantioseparation of aliphatic and aromatic amino acids was successfully performed using a new open-tubular zwitterionic column with tentacle-type polymer stationary phase. The polymeric stationary phase was prepared using 3-chloro-2-hydroxypropyl methacrylate based (HPMA-CI) a new reactive monomer. The preparation procedure of the open-tubular column included silanization, in situ ...
Albertí P P Centro de Investigación y Tecnología Agroalimentaria (CITA), Gobierno de Aragón, Avda. Montañana 930, 50059 Zaragoza, Spain. Electronic address: - - 2013
The effect of varying concentrate composition to include 5% linseed and 200IU of vitamin E on the growth performance, fatty acid composition, and muscle color during shelf life was assessed in 46 young Pirenaica bulls finished to two fatness levels. Adding 5% linseed lowered the dressing rate without altering daily ...
Zanella Alberto - - 2013
Blood acidification by lactic acid infusion converts bicarbonate to CO2. This effect can be exploited to increase the transmembrane PCO2 gradient of an extracorporeal membrane lung, resulting in a significant increase of extracorporeal CO2 removal. Lactic acid, however, is an energetic substrate and its metabolism might increase total body CO2 ...
Sangwallek Juthaporn - - 2013
Yeast fatty acid synthase (Fas) comprises two subunits, α6 and β6, encoded by FAS2 and FAS1, respectively. To determine features of yeast Fas that control fatty acyl chain length, chimeric genes were constructed by combining FAS sequences from Saccharomyces cerevisiae (ScFAS) and Hansenula polymorpha (HpFAS), which mostly produces C16 and ...
Bureau Sylvie - - 2013
The prediction of internal quality properties, such as sweetness and acidity, in peach fruit by mid-infrared spectroscopy is of interest for rapid determination. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) was tested here on two populations of peach fruits issued from contrasting genitors providing a large phenotypic variability. Over ...
Yu Xiao-Hong - - 2013
Cyclopropane fatty acids (CPA) are desirable as renewable chemical feedstocks for the production of paints, plastics and lubricants. Towards our goal of creating a CPA-accumulating crop we expressed nine higher-plant cyclopropane synthase (CPS) enzymes in the seeds of fad2fae1 Arabidopsis, and observed accumulation of <1% CPA. Surprisingly, expression of the ...
Segatin Nataša - - 2013
Model vegetable oil mixtures with significantly different basic oil quality indices (free fatty acid, iodine and Totox values) were prepared by adding oleic acids, synthetic saturated triglycerides, or oxidized safflower oil (Carthamus tinctorius) to the oleic type of sunflower oil. Dielectric constants, dielectric loss factors, quality factors, and electrical conductivities ...
Liu Yilan - - 2013
Microbial production of fatty acids and fatty alcohols has attracted increasing concerns because of energy crisis and environmental impact of fossil fuels. Therefore, simple and efficient methods for the extraction and quantification of these compounds become necessary. In this study, a high-performance liquid chromatography-refractive index detection (HPLC-RID) method was developed ...
Qin Xiao-Li XL College of Food Sciences, Southwest University, Chongqing, 400715, People's Republic of China; College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510640, People's Republic of - - 2013
T1 lipase has received considerable attention due to its thermostability. Fatty acid specificity of T1 lipase (crude and purified) was investigated, and its potential in the synthesis of acylglycerols was also evaluated. Fatty acid specificity of T1 lipase (crude and purified) was investigated in the esterification of fatty acids (C6:0 ...
Orozco Angela M - - 2013
The urgent need for alternative renewable energies to supplement petroleum-based fuels and the reduction of landfill sites for disposal of solid wastes makes it increasingly attractive to produce inexpensive biofuels from the organic fraction of the municipal solid waste. Therefore, municipal waste in the form of newspaper was investigated as ...
Aiken Christopher Geoffrey Alexander CG Neonatal Unit, Labcare Pathology, Pharmacy and Medical Records Taranaki Base Hospital , New Plymouth, New Zealand - - 2013
To establish that arterial blood carbonic acid varies inversely with lactic acid in accordance with bicarbonate exchanging for lactate across cell membranes through the anion exchange mechanism to maintain the Gibbs-Donnan equilibrium. Over 5 years, lactate was measured on all blood gases taken from neonatal admissions, as well as organic ...
Spiga Fabio M - - 2013
A more specific and intense signal is desirable for most kinds of biosensors for biomedical or environmental applications, and it is especially so for label-free biosensors. In this paper, we show that hybridization chain reaction (HCR) can be exploited for the easily detectable accumulation of nucleic acids on metal surfaces ...
Cwik Paweł P Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, - - 2014
Gold electrodes were functionalized with thiolated phenylboronic acids or by sequential immobilization of alkanethiols with terminal carboxylic groups and conjugation with aminophenylboronic acids. The stepwise assembly of organic molecules was characterized by several voltammetric techniques with systematic monitoring of surface coverage of organic molecules anchored to the gold electrodes. The ...
Eissa Shimaa Hassan Hassan - - 2013
This work describes the selection and identification of DNA aptamers that bind with high affinity and specificity to okadaic acid (OA), a lipophilic marine biotoxin that accumulates in shellfish. The aptamers selected using systematic evolution of ligands by exponential enrichment (SELEX) exhibited dissociation constants in the nanomolar range. The aptamer ...
Berardinelli Annachiara - - 2013
The main aim of the present research is to assess the possibility of quick screening of fatty acid alkyl esters (FAAE) in olive oils using time domain reflectometry (TDR) and PLS multivariate statistical analysis. Eighteen virgin olive oil samples with fatty acid alkyl ester contents and fatty acid ethyl ester/methyl ...
Reyes-Reveles Juan - - 2013
Dendrimer chemistries have virtually exploded in recent years with increasing interest in this class of polymers as gene delivery vehicles. An effective nucleic acid delivery vehicle must efficiently bind its cargo and form physically stable complexes. Most importantly, the nucleic acid must be protected in biological fluids and tissues, as ...
Lin Hui - - 2013
The electrochemical mineralization of environmentally persistent long-chain perfluorinated carboxylic acids (PFCAs), i.e., perfluorononanoic acid (C8F17COOH, PFNA) and perfluorodecanoic acid (C9F19COOH, PFDA) was investigated in aqueous solutions (0.25 mmol L(-1)) over Ti/SnO2-Sb-Ce (SnO2), Ti/SnO2-Sb/Ce-PbO2 (PbO2), and Ti/BDD (BDD) anodes under galvanostatic control at room temperature. Based on PFCA decay rate, total ...
Xia Xi - - 2013
Although serum uric acid level appears to be associated with mortality in individuals treated with hemodialysis, the relationship between serum uric acid level and death is uncertain in patients treated with peritoneal dialysis (PD). Cohort study. 985 patients from a single PD center in South China followed up for a ...
Shin In-Sub - - 2013
A new highly selective probe for biothiols, squarylium dye (SQ), was designed and synthesized. The probe displayed a color change from blue to colorless upon reaction with biothilos such as cysteine (Cys), homocysteine (Hcy) and glutathione (GSH). The competition experiments revealed that no obvious interference was observed by performing the ...
Lin Lin - - 2013
Batch experiments were carried out on anaerobic digestion of swine manure under 10 % of total solids and 60 g/L of zeolite addition at 35 °C. Four distinctive volatile fatty acid (VFAs) evolution stages were observed during the anaerobic process, i.e., VFA accumulation, acetic acid (HAc) and butyric acid (HBu) utilization, propionic acid ...
Shih Lifan L Biochemistry and Molecular Medicine, University of California Davis, Davis CA - - 2013
Previous studies have shown that palmitate (PA) can bind specifically and non-specifically to Fe (III) MbCN. The present study has observed PA interaction with physiological states of Fe (II) Mb, and the observations support the hypothesis that Mb may have a potential role in facilitating intracellular fatty acid transport. (1)H ...
Yusubov Mekhman S - - 2013
New powerful hypervalent iodine(v) oxidants, tosylate and mesylate derivatives of 2-iodoxybenzoic acid (IBX), were prepared by the reaction of IBX with the corresponding sulfonic acids. Single crystal X-ray crystallography of the diacetate derivative of IBX-tosylate revealed an unusual heptacoordinated iodine geometry without any significant intermolecular secondary interactions.
Wang Hui-Chen - - 2013
A bis-boronic acid modified electrode for the sensitive and selective determination of glucose concentrations has been developed. The electrochemical characteristics of the sensor with added saccharides were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The bis-boronic acid modified electrode was both sensitive and selective for glucose.
Yang Zhijun - - 2013
We report mass analyzed threshold ionization spectroscopy of supersonically cooled gas phase carboxylic complexes with 9-hydroxy-9-fluorenecarboxylic acid (9HFCA), an analog of glycolic acid. The vibrationally resolved cation spectrum for the 9HFCA complex with formic acid allows accurate determination of its ionization potential (IP), 64 374 ± 8 cm(-1). This is 545 ...
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