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Myles Lauren - - 2013
The ability of triazolium salts to serve as a precatalyst for both an acid and a powerful base/nucleophile (controlled by additives) has been exploited in a process characterised by a unique in situ catalyst modification strategy.
Giacomino S - - 2013
Human consumption of flaxseed is increasing due to its health benefit properties and extrusion processes can enhance its nutritional quality. Extruded flaxseed meal (EFM) obtained in a pilot plant was characterized and incorporated in flour mixes and cereal-based bars to demonstrate its nutritious usefulness. Amino acid content was not affected ...
Chirinos Rosana - - 2013
Fatty acids (FA), phytosterols, tocopherols, phenolic compounds, total carotenoids and hydrophilic and lipophilic ORAC antioxidant capacities were evaluated in 16 cultivars of Sacha inchi (SI) seeds with the aim to valorise them and offer more information on the functional properties of SI seeds. A high α linolenic (α-Ln) fatty acid ...
Plianwong Samarwadee - - 2013
A new method was developed for the estimation of polyethylenimine (PEI) to nucleic acid ratio at which the polyplex was completely formed. The assay relied on the attraction of dichlorofluoresceinate dye to adsorb on self-assembling particles as counterions, as induced by the surface charge of the polyplex which became positive ...
Soto-Barajas Milton Carlos - - 2013
The present study addresses the prediction of the time of ripening and type of mixtures of milk (cow's, ewe's and goat's) in cheeses of varying composition using artificial neural networks (ANN). To accomplish this aim, neural networks were designed using as input data the content of 19 fatty acids obtained ...
Brose Dominic A - - 2013
Chromite ore processing residue (COPR), the solid waste product from the high-temperature alkaline processing of ferrochromite (FeO·CrO), contains Cr(VI) in soluble and insoluble compounds formed in the roasting process. This research investigated tartaric acid in combination with Mn and isopropyl alcohol (IPOH ) as co-reductants for reagent- and COPR-derived Cr(VI). ...
Gupta A - - 2013
Gemcitabine (dFdC) mediated cancer treatment faces obstacles, due to its high hydrophilicity. A valuable strategy was executed by synthesizing lipophilic fatty acid derivative of dFdC i.e., 4-(N)-stearoyl gemcitabine (C18dFdC), built-in into polymeric poly-lactic-co-glycolic acid nanoparticles (PLGA NPs) and compared with that of parent drug. Encapsulation of derivative within NPs was ...
Chen Liyan - - 2013
BACKGROUND: Phytic acid of soy meal (SM) could influence protein and important minerals digestion of monogastric animals. Aspergillus oryzae (ATCC 9362) solid state fermentation was applied to degrade phytic acid in SM. Two - stage temperature fermentation protocol was investigated to increase the degradation rate. The first stage was to ...
Bernard Jürgen - - 2013
Twenty years ago two different polymorphs of carbonic acid, α- and β-H2CO3, were isolated as thin, crystalline films. They were characterized by infrared and, lately, by Raman spectroscopy. Determination of the crystal structure of these two polymorphs, using cryo-powder and thin film X-ray diffraction techniques, has failed so far. Recently, ...
Liu Long - - 2013
In this work, the specificity of cyclodextrin glycosyltransferase (CGTase) of Paenibacillus macerans towards maltose was improved by the site-saturation engineering of lysine 47, and the enzymatic synthesis of 2-O-d-glucopyranosyl-l-ascorbic acid (AA-2G) with l-ascorbic acid and maltose as substrates was optimized. Compared to the AA-2G yield of the wild-type CGTase, that ...
Berker Kadriye Isil - - 2013
Folin-Ciocalteau method of total phenolics assay, originally developed for protein determination, has recently evolved as a total antioxidant capacity assay, but found to be incapable of measuring lipophilic antioxidants due to the high affinity of FC chromophore, i.e. multivalent-charged phospho-tungsto-molybdate(V), toward water. Thus, the FC method was modified and standardized ...
Chandru Kuhan - - 2013
We tested the stability and reaction of several amino acids using hydrothermal system simulators: an autoclave and two kinds of flow reactors at 200-250 °C. This study generally showed that there is a variation in the individual amino acids survivability in the simulators. This is mainly attributed to the following factors; ...
Cavalieri Francesca - - 2013
We report loading of vitamin C (ascorbic acid) on to lysozyme-shelled microbubbles. The interaction between lysozyme-shelled microbubbles and vitamin C was studied by use of cyclic and differential pulse voltammetry, zeta potential measurements, and scanning electron microscopy. The effect of microbubbles on electrochemical measurement of ascorbic acid was evaluated. The ...
Zech Hajo - - 2013
Time-resolved utilization of multiple amino acids by Phaeobacter inhibens DSM 17395 was studied during growth with casamino acids. The 15 detected amino acids could be grouped according to depletion rate into four different categories, i.e. from rapid (category I) to non-depletion (category IV). Upon entry into stationary growth phase, amino ...
Sheng Long - - 2013
The influences of Tween 80 on the pullulan production, cell growth, glucosyltransferase activity and fatty acid composition of the cells were studied. The addition of Tween 80 to the culture medium significantly enhanced the pullulan production, but had no impact to biomass accumulation. Glucosyltransferase activity involved in pullulan synthesis was ...
Duka Ada - - 2013
Hepatopancreatic brush border membrane vesicles (BBMV), made from Atlantic White shrimp (Litopenaeus setiferus), were used to characterize the transport properties of (3)H-L-leucine influx by these membrane systems and how other essential amino acids and the cations, sodium and potassium, interact with this transport system. (3)H-L-leucine uptake by BBMV was pH-sensitive ...
Winichayakul Somrutai - - 2013
Our dependency on reduced carbon for energy has led to a rapid increase in the search for sustainable alternatives and a call to focus on energy densification and increasing biomass yields. In this study we generated a uniquely stabilised plant structural protein (cysteine-oleosin) that encapsulates triacylglycerol (TAG). When co-expressed with ...
Karri Phaneendrasai - - 2013
Know your limit! IsoGNA (a structural isomer of GNA) was found-in sharp contrast to GNA-to be highly restricted in its ability to base-pair with itself and other nucleic acids. While homogeneous sequences (e.g. isoGNA(A)16 ) formed duplexes, the heterogeneous sequences showed no base-pairing. This exemplifies the limitations of canonical nucleobases ...
Tezcan Filiz - - 2013
A new chiral micellar electrokinetic chromatography-laser induced fluorescence (MEKC-LIF) method was developed using sodium dodecylbenzene sulphonate (SDBS) as surfactant for the determination of chiral amino acids in pomegranate juices. The use of SDBS as the micellar medium enhanced the fluorescence intensities of amino acids derivatised with fluorescein isothiocyanate (FITC). The ...
Ko Chih-Yu - - 2013
A highly selective, sensitive, and stable non-enzymatic glucose sensor based on Ni hydroxide modified nitrogen-incorporated nanodiamonds (Ni(OH)2-NND) was developed. The sensor was fabricated by e-beam evaporation of a thin Ni film on NND followed by the growth of Ni(OH)2 using an electrochemical process. It was found that the Ni film ...
Damm Markus - - 2013
Safe only in a microreactor! The synthesis of adipic acid from cyclohexene by tungstic acid-catalyzed oxidation using hydrogen peroxide following the classical Noyori protocol can be accomplished in good yields with residence times as short as 20 min at 140 °C using a safe and scalable microreactor environment. Under these intensified conditions ...
Liu Qingchao - - 2013
Twenty-six naturally occurring oleanolic acid saponins and their derivatives, 16 of which were synthesized in this study, were preliminarily evaluated against human cancer cells. From SAR studies, the presence of α-l-rhamnosyl residue at the terminal of both C-3 and C-28 position for oleanolic acid bidesmosides was important to enhance cytotoxicity, ...
Aithal Mahesh - - 2013
Enzymatic synthesis of propyl gallate in organic solvent was studied using cell-associated tannase (EC 3.1.1.20) of Bacillus massiliensis. Lyophilized biomass showing tannase activity was used as the biocatalyst. The effects of solvent, surfactant treatment, and bioimprinting on the propyl gallate synthesis were studied and subsequently optimized. Among various solvents, benzene ...
Reddy G V Bhaskar - - 2013
The antioxidant and antimicrobial efficacy of grape seed extract (GSE) was studied in restructured mutton slices (RMS) under aerobic and vacuum packaging conditions during refrigerated storage. The RMS treated with grape seed extract (GSE) had significantly (P<0.05) lower thiobarbituric acid reactive substance (TBARS) values and free fatty acids (FFA) % ...
Liu Meiling - - 2013
A double signal amplification platform for ultrasensitive and simultaneous detection of ascorbic acid (AA), dopamine (DA), uric acid (UA) and acetaminophen (AC) was fabricated by a nanocomposite of ferrocene thiolate stabilized Fe3O4@Au nanoparticles with graphene sheet. The platform was constructed by coating a newly synthesized phenylethynyl ferrocene thiolate (Fc-SAc) modified ...
Najim N - - 2013
Pulsed electric field (PEF) processing involves the application of pulses of voltage for less than 1 s to fluid products placed between 2 electrodes. The effect of mild PEF on beneficial characteristics of probiotic bacteria Lactobacillus acidophilus and Lactobacillus delbrueckii ssp. bulgaricus is not clearly understood. The objective of this ...
Deng Dunying - - 2013
Conductive copper nano-inks can be used as a low-cost replacement for silver and gold nano-inks that are used in inkjet printing of conductive patterns. We describe a high-throughput, simple and convenient method for the preparation of copper nanoparticles in aqueous solution at room temperature. Copper acetate is used as the ...
Baran Paul P Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, 40225 Düsseldorf, - - 2013
Signaling of the pleiotropic cytokine Interleukin-6 (IL-6) is coordinated by membrane-bound and soluble forms of the IL-6 receptor (IL-6R) in processes called classic and trans-signaling, respectively. The soluble IL-6R is mainly generated by ADAM10- and ADAM17-mediated ectodomain shedding. Little is known about the role of the 52-amino acid-residue-long IL-6R stalk ...
Ju Kim Hyun - - 2013
Most current metabolic engineering applications rely on the inactivation of unwanted reactions and the amplification of product-oriented reactions. All of the biochemical reactions involved with cellular metabolism are tightly coordinated with the electron flow, which depends on the cellular energy status. Thus, the cellular metabolic flux can be controlled either ...
Buglione Lucia - - 2013
The determination of fatty acids by nonaqueous CZE with capacitively coupled contactless conductivity detection was investigated. A new deoxycholate-based BGE, which had previously been found to give significantly improved baseline stability in the determination of lipophilic organic ammonium ions, was found to be similarly beneficial for the determination of the ...
Hu Liang L Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2 - - 2013
We present the hysteresis of the response of the poly(N-isopropylacrylamide)-co-acrylic acid microgel-based etalons to solution temperature and pH changes. We find that the optical hysteresis of the etalon can be controlled using various solution ionic strengths and/or counterions, as well as by varying the microgel's acrylic acid concentration.
Xia Ao - - 2013
The thermodynamic comparison in dark fermentation between amino acids and reducing sugars released from Nannochloropsis oceanica biomass are investigated for the first time. The total utilisation efficiencies of amino acids and reducing sugars are both about 95% in dark fermentation. But the consumption time of most amino acids is about ...
Chatterjee Abhishek - - 2013
Selected: A tryptophanyl-tRNA synthetase(TrpRS)/tRNA pair was evolved to genetically encode tryptophan analogues and other unnatural amino acids with large side chains in E. coli. A selection scheme was employed to identify TrpRS variants able to selectively charge tRNACUA (Trp) with Trp analogues. Substitution of Trp66 in enhanced cyan fluorescent protein ...
Emami Razavi Amirnader - - 2013
Aim: High-density lipoprotein (HDL) particles are heterogeneous in their composition, structure and size and may differ in conferring protection against coronary artery disease. The aim of this study is to investigate the associations between HDL size and its fatty acid composition. Patients & methods: HDL mean particle size from 140 ...
Siebels Amanda M - - 2013
The Madison Metropolitan Sewerage District (The District) in Madison, Wisconsin has been experiencing seasonal foaming in their anaerobic biosolids digesters, which has occurred from mid-November to late June for the past few years. The exact cause(s) of foaming is unknown. Previous research findings are unclear as to whether applications of ...
Desai Vilas - - 2013
Silver based antimicrobial agents with TiO2 as a host support (AgCl/TiO2) are increasingly being evaluated for disinfection and therapeutic applications. In this work TiO2 supported silver chloride nanocomposites were synthesized and functionalized with fumaric acid. X-ray diffraction results showed that the TiO2 was in anatase phase and AgCI was in ...
Chen Bin - - 2013
To establish a ultra-pressure liquid chromatography (UPLC) method for the determination of 5 phenolic acids including neochlorogenic acid, chlorogenic acid, caffeic acid, cryptochlorogenic acid, and cynarin in fried Fructus xanthii from different production sites and its dispensing granule. An Acquity BEH C18 chromatographic column (100 mm × 2.1 mm,1.7 μm) ...
Tong Xuejiao - - 2013
The removal efficiency of copper (Cu(II)) from an actual acidic electroplating effluent by biochars generated from canola, rice, soybean and peanut straws was investigated. The biochars simultaneously removed Cu(II) from the effluent, mainly through the mechanisms of adsorption and precipitation, and neutralized its acidity. The removal efficiency of Cu(II) by ...
Li Shigui - - 2013
After biocontrol Trichoderma longbrachiatum T2 was applied in the rhizosphere of cucumber, the functional diversity of the rhizomicrobes utilizing carbon sources was investigated by using Biolog Eco-microplates technique. The result showed that T longbrachiatum T2 had a significant effect on the rhizomicrobes in terms of their metabolic activity and their ...
Wang Manli M Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of - - 2013
To develop effective and safe penetration enhancers, a series of l-carvyl esters, namely, 5-isopropenyl-2-methylcyclohex-2-en-1-yl heptanoate (C-HEP), 5-isopropenyl-2- methylcyclohex-2-en-1-yl octanoate (C-OCT), 5-isopropenyl-2-methylcyclohex-2-en-1-yl decanoate (C-DEC), 5-isopropenyl-2-methylcyclohex-2-en-1-yl dodecanoate (C-DOD), 5-isopropenyl-2-methylcyclohex-2-en-1-yl tetradecanoate (C-TET), and 5-isopropenyl-2-methylcyclohex-2-en-1-yl palmitate (C-PAL), was synthesized from l-carveol and saturated fatty acids (C7-C16). The volatility of l-carveol and l-carvyl esters was ...
Zhang Ning - - 2013
BACKGROUND: Shiitake, the second cultivated mushroom, is famous for its high nutritional value and medicinal properties. In this study, some of the chemical parameters and antioxidant properties of caps and stipes of shiitake dried by different methods (freeze drying, shade drying and hot air drying) were comparatively investigated with spectrophtotometric ...
West Megan E - - 2013
The color and chemical stabilities of six anthocyanins, including cyanidin 3-glucoside, highly purified and present in semi-purified extracts (also containing other anthocyanins) from grape pomace, purple corn, and black rice, were determined in combination with ascorbic acid in solutions at differing pH (3.0 and 4.0) and temperatures (6 to 40 ...
Hu Ting - - 2013
Guluronic acid oligosaccharides (GOS) with degree of polymerization (DP) ranging from 1 to 10 were prepared by a rapid microwave degradation method. Polyguluronic acid, fractionated from alginate hydrolysate, was dissolved in dilute ammonia water at a concentration of 20mg/mL (pH 5) and then hydrolyzed under microwave irradiation (1600W) at 130°C ...
Nodake Kazumasa - - 2013
The purpose of this study was to assess an evaluation method using an artificial taste sensor, in comparison with chemical analysis and sensory evaluation of the taste of meat during curing. Samples of Canadian pork were treated with salt, nitrite and phosphate. Curing time ranged from 0 to 168 h. In ...
Godovikova Tatyana Sergeevna - - 2013
Herein, we report a novel strategy to engineer an acid-sensitive anticancer theranostic agent using a vector-drug ensemble. The ensemble was synthesized by directly conjugating the linoleic acid (LA)-modified branched polyethyleneimine with a chemotherapeutic drug trifluorothymidine. Linoleic acid residues were grafted onto 25 kDa polyethyleneimine (PEI) by treating PEI with linoleic ...
Behera Sailesh N - - 2013
Aerosol acidity is one of the most important parameters that can influence atmospheric visibility, climate change and human health. Based on continuous field measurements of inorganic aerosol species and their thermodynamic modeling on a time resolution of 1h, this study has investigated the acidic properties of PM2.5 and their relation ...
Golshan Tafti Abolfazl - - 2013
In present study, spray-dried sourdough was produced using a pilot scale spray dryer and the physico-chemical and microbial characteristics of the obtained sourdough powder were investigated. The application of the spray-dried sourdough at different levels (3%, 6%, 9% and 15%) in breadmaking was also evaluated. Bulk density, wettability and suspensibility ...
Tanino Takanori - - 2013
The coproduction of a useful material and electricity via a novel application of microbial fuel cell (MFC) technology to oxidative fermentation was investigated. We focused on vinegar production, i.e., acetic acid fermentation, as an initial and model useful material that can be produced by oxidative fermentation in combination with MFC ...
Wu Zhisheng - - 2013
Six cyclic thiourea/urea functionalized triphenylamine-based dyes (AZ1-AZ6) containing 2-cyanoacrylic acid as an acceptor and various linkers (phenyl, biphenyl, and bithiophene) were synthesized. They exhibited high photovoltaic performance owing to an improved short-circuit photocurrent density (Jsc) and open-circuit voltage (Voc). Among them, AZ6 bearing a cyclic thiourea group and bithiophene linker ...
Bornik Maria-Anna - - 2013
Thermal treatment of aqueous solution of D-galacturonic acid at pH 3, 5 and 8 led to rapid browning of the solution and to the formation of carbocyclic compounds like reductic acid (2,3-dihydroxy-2-cyclopenten-1-one), DHCP (4,5-dihydroxy-2-cyclopenten-1-one) and furan-2-carbaldehyde as degradation products in weak acidic solution. Studies on their formation revealed 2-ketoglutaraldehyde as ...
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