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citrate trisodium

Aihui Liang, Xin Li, Xinghui Zhang, Guiqing Wen, Zhiliang Jiang
The nanogold reaction between HAuCl4 and trisodium citrate (TCA) proceeded very slowly at 60°C in a water bath. The as-prepared graphene oxide nanoribbons (GONRs) exhibited strong catalysis during the reaction to form gold nanoparticles (Au NPs) and appeared as a strong surface-enhanced Raman scattering (SERS) peak at 1616 cm-1 in the presence of the molecular probe Victoria blue 4R (VB4r). With increase in GONR concentration, the SERS peak increased due to increased formation of Au NPs. Upon addition of dimethylglyoxime (DMG) ligand, which was adsorbed onto the GONR surface to inhibit GONR catalysis, the SERS peak decreased...
June 13, 2018: Luminescence: the Journal of Biological and Chemical Luminescence
Šalandová Jana, Franc Aleš, Hofmann Jiří, Dumicic Aleksandra, Kukačková Lenka, Červená Tereza, Beránek Josef, Srbek Jan, Repický Andrej, Vladovičová Beata, Vetchý David
The purpose of this work was to develop a new supergeneric product Meloxicam/Omeprazole. Such a combination brings a benefit in terms of decreasing side effects for the patients using meloxicam. The new combination is composed of a meloxicam powder blend (MPB) and omeprazole gastro-resistant pellets (OAP) in hard gelatin capsules. The main tasks were to select the excipients to keep the functional layer of OAP active and to prove the bioequivalence to the original products of meloxicam tablets together with omeprazole capsules...
May 11, 2018: International Journal of Pharmaceutics
Chongning Li, Libing Wang, Yanghe Luo, Aihui Liang, Guiqing Wen, Zhiliang Jiang
Fullerene exhibited strong catalysis of the redox reaction between HAuCl₄ and trisodium citrate to form gold nanoplasmon with a strong surface-enhanced Raman scattering (SERS) effect at 1615 cm−1 in the presence of Vitoria blue B molecule probes. When fullerene increased, the SERS peak enhanced linearly due to formation of more AuNPs as substrate. Upon addition of Ba2+ , Ba2+ ions adsorb on the fullerene surface to inhibit the catalysis of fullerene that caused the SERS peak decreasing. Analyte SO₄2− combined with Ba2+ to form stable BaSO₄ precipitate to release free fullerene that the catalysis recovered, and the SERS intensity increased linearly...
April 26, 2018: Nanomaterials
Zhili Han, Jiangnan Shu, Qiaoshi Jiang, Hua Cui
In this work, the eletrochemiluminescence (ECL) behavior of Cu2+ /cysteine complexes and N-(aminobutyl)-N-(ethylisoluminol) (ABEI) functionalized gold nanoparticles combined with chitosan (Cu2+ -Cys-ABEI-GNPs-CS) were studied by cyclic voltammetry and a double-step potential, which exhibited excellent ECL properties without any coreactant. It was found that the ECL intensity of Cu2+ -Cys-ABEI-GNPs-CS could increase at least one order of magnitude compared with that of Cu2+ -Cys-ABEI-GNPs. Furthermore, a coreactant-free and label-free ECL immunosensor has been established for the determination of early acute myocardial infarction biomarker copeptin based on luminescent immuno-gold nanoassemblys consisting of Cu2+ -Cys-ABEI-GNPs-CS and immuno-gold nanoparticles prepared by connecting copeptin antibody with trisodium citrate stabilized gold nanoparticles...
April 25, 2018: Analytical Chemistry
Sukhbayar Gankhuyag, Kyoung Lee, Dong Sik Bae
We have suggested that a facile synthesis of CoFe2O4/Ag composite material as an antibacterial agent for substitution of a chlorination agent for microbial infected wastewater treatment. The CoFe2O4/Ag was synthesized by an impregnation method in assistance with trisodium citrate as a reducing agent. The as-prepared uncalcined CoFe2O4 (CFG), calcined CoFe2O4 (CFG600), and calcined CoFe2O4/Ag (CFG600/Ag) composites were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM) and Energy Dispersive X-ray (EDX) techniques...
September 1, 2018: Journal of Nanoscience and Nanotechnology
Franz Ratzinger, Mona Lang, Sabine Belik, Klaus G Schmetterer, Helmuth Haslacher, Thomas Perkmann, Peter Quehenberger
CONTEXT: - Coagulation testing is challenging and depends on preanalytic factors, including the citrate buffer concentration used. OBJECTIVE: - To better estimate preanalytic effects of the citrate buffer concentration in use, the difference between results obtained by samples with 3.2% and 3.8% citrate was evaluated. DESIGN: - In a prospective observational study with 76 volunteers, differences related to the citrate concentration were evaluated...
April 6, 2018: Archives of Pathology & Laboratory Medicine
M Zimbone, A Contino, G Maccarrone, P Musumeci, M J Lo Faro, L Calcagno
The stability of silver nanoplatelet (NP) suspensions prepared with different concentrations of trisodium citrate (TSC) was studied by depolarized dynamic light scattering (DDLS) and UV-vis spectrometry. The morphology of the nanoparticles, as well as the color and stability of the sols, are tuned by the concentration of the capping agent. The nanoparticles prepared with high TSC concentration (>10-4 M) are blue triangular NPs showing a slight truncation of the tips with aging. When low TSC concentrations are used, the color of the sols changes from blue to yellow with aging time and a strong modification of the morphology occurs: the nanoparticle shape changes from triangular to spherical...
June 29, 2018: Nanotechnology
Dohyoung Kim, Jongsung Kim
Recently various nanomaterials have been prepared using the microwave irradiation technology because of its advantages over conventional thermal decomposition methods such as the precise control of reaction temperature, lower energy consumption, and target-oriented uniform heating. In this study, water-soluble Cu-In-S/ZnS core/shell quantum dots (QDs) with average size in the range 3.5-3.7 nm were successfully synthesized in aqueous phase by microwave irradiation. L-glutathione and trisodium citrate dihydrate were used as a stabilizer between indium and copper ions...
February 1, 2018: Journal of Nanoscience and Nanotechnology
Wenjea J Tseng, Yi-Chen Chuang
Bimetallic iron/silver (Fe/Ag) core/shell nanoparticles were prepared by chemical reduction from ferrous sulfate in the presence of sodium borohydride as a reducing agent in water, followed then by redox transmetalation with addition of silver nitrate (AgNO3) solution. When the reduction temperature was increased from room temperature to 85 °C, Fe nanoparticles with a reduced crystallite size ranging from 5.5 to 2.0 nm resulted. The particles changed from spherical to plate-like morphology as the temperature reached 85 °C...
April 1, 2018: Journal of Nanoscience and Nanotechnology
Ying Chen, Qian Ma, Hui Li, Dan Wang, Quande Che, Junpeng Wang, Gang Wang, Ping Yang
Triangular- and circular-like Ag/AgCl nanoplates with various edge length and thickness have been successfully synthesized by a facile in situ oxidation process. Uniform Ag triangular nanoplates with tunable sizes and thicknesses obtained by adjusting the adding amounts of trisodium citrate and polyvinylpyrrolidone (PVP) were employed as Ag precursors to form triangular- and circular-like Ag/AgCl heterostructures by changing the adding amounts of FeCl3 in the reaction process. The morphological evolution mechanism of Ag nanoplates and Ag/AgCl heterostructures was discussed...
April 1, 2018: Journal of Nanoscience and Nanotechnology
Wei Fu, Yurika Watanabe, Hayaka Satoh, Keita Inoue, Natsumi Moriguchi, Kazunao Fusa, Yuya Yanagisawa, Takaaki Mutoh, Takashi Nakamura
The creaming effects, mechanical properties and microstructures of processed cheeses were investigated under different emulsifying conditions using a rapid visco-analyzer, and the changes in protein network related to the creaming effect and the occurrence of yielding points were discussed. The higher stirring speed affected the fat globules to be smaller, and gave the processed cheese more firmness at fixed stirring time. The longer stirring time caused the protein network to become fine-stranded. A fine-stranded structure promoted the creaming effect, and hence the formation of yielding point in the mechanical properties...
March 2018: Bioscience, Biotechnology, and Biochemistry
Inayat Ullah, Khakemin Khan, Muhammad Sohail, Kifayat Ullah, Anwar Ullah, Shabnum Shaheen
In this research work, copper (Cu), palladium (Pd) and their bimetallic palladium@ copper (Pd@Cu) nanoparticles were synthesized using trisodium citrate as a stabilizing agent using the known chemical reduction method. The synthesized Cu, Pd and Pd@Cu nanoparticles were characterized by the ultraviolet-visible spectroscopy, scanning electron microscopy and X-ray diffraction spectroscopy, respectively. The different volumes of trisodium citrate were used for the stability of synthesized monometallic Cu, Pd and bimetallic Pd@Cu nanoparticles...
2017: International Journal of Nanomedicine
T Francey, A Schweighauser
BACKGROUND: The traditional systemic heparinization used for anticoagulation in extracorporeal therapies may cause fatal complications in animals at risk of bleeding. HYPOTHESIS/OBJECTIVES: To develop and validate a protocol of regional citrate anticoagulation (RCA) for intermittent hemodialysis in dogs. ANIMALS: A total of 172 dogs treated with hemodialysis for acute kidney injury. METHODS: In vitro titration was performed, adding trisodium citrate and calcium chloride to heparinized canine blood...
January 2018: Journal of Veterinary Internal Medicine
Wenhong Gao, Yangping Huang, Ruixue He, Xin-An Zeng
A new ion exchange column method was investigated to synthesize the soluble soybean polysaccharide-iron(III) complex (SSPS-FeIII1 ) using soluble soybean polysaccharides (SSPS). The feasibility of ion exchange column reaction was explored firstly. Results indicated the D730 anion macroporous adsorption resin could effectively absorb SSPS and the static adsorption saturation time was 20h. The iron content of the complex reached up to 15.07% when trisodium citrate concentration was 2mg/mL. The structure of SSPS-FeIII complex synthesized by this method (SSPS-FeIII1 2 ) was compared with that prepared by trisodium citrate - ferric chloride method (SSPS-FeIII2 3 )...
March 2018: International Journal of Biological Macromolecules
Junqi Tang, Kunpeng Gao, Quanhong Ou, Xuewen Fu, Shi-Qing Man, Jie Guo, Yingkai Liu
Gold nanoparticles (AuNPs) have been researched extensively, such as applied in various biosensors, biomedical imaging and diagnosis, catalysis and physico-chemical analysis. These applications usually required to know the nanoparticle size or concentration. Researchers have been studying a simply and quick way to estimate the concentration or size of nanoparticles from their optical spectra and SPR feature for several years. The extinction cross-sections and the molar attenuation coefficient were one of the key parameters...
February 15, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Peter Barton, Sanjoy Mukherjee, Jithin Prabha, Bryan Boudouris, Liang Pan, Xianfan Xu
Silver nanostructures were fabricated by femtosecond laser-induced reduction of silver ions and the impact of solution chemistry on the fabricated structures was evaluated. By investigating the exact photochemistry of the nanofabrication solutions, which contained varying amounts of diamine silver ions, trisodium citrate, and n-lauroylsarcosine sodium, and optimizing the laser processing parameters, we fabricated two-dimensional silver pads with surface roughness values of 7 nm and stable 2.5-dimensional shell structures with heights up to 10 µm and aspect ratios of 20 in a ready manner...
November 1, 2017: Nanotechnology
Poppy Das, Gaurav Gupta, Vinodhini Velu, Rajendra Awasthi, Kamal Dua, Himaja Malipeddi
BACKGROUND: Struvite is one of the most common urinary/kidney stones, composed of magnesium ammonium phosphate (MgNHPO4 ·H2 O). They are also termed as infection stones as these are associated with urinary tract infections. Numerous studies have been carried out to examine the growth and inhibition of struvite stones. OBJECTIVE: This review summarizes various reports on the factors responsible for inducing struvite stones in the kidney and gives a detailed account of studies on inhibition of growth of struvite crystals...
December 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Razwan Baber, Luca Mazzei, Nguyen Thi Kim Thanh, Asterios Gavriilidis
In this work we present a detailed study of flow technology approaches that could open up new possibilities for nanoparticle synthesis. The synthesis of gold and silver nanoparticles (NPs) in a flow device based on a coaxial flow reactor (CFR) was investigated. The CFR comprised of an outer glass tube of 2 mm inner diameter (I.D.) and an inner glass tube whose I.D. varied between 0.142 and 0.798 mm. A split and recombine (SAR) mixer and coiled flow inverter (CFI) were further employed to alter the mixing conditions after the CFR...
September 28, 2017: Nanoscale
Jingyi Feng, Yaxi Hu, Edward Grant, Xiaonan Lu
Thiabendazole, a systemic fungicide used to treat vegetables and fruits during postharvest process, persists as detrimental residue to consumers. We combine a molecularly imprinted polymers (MIPs) with surface enhanced Raman spectroscopy (SERS) to form a novel MISPE-SERS chemosensor and determined thiabendazole in orange juice. Kinetic and static adsorption tests validated the efficient and selective adsorption of thiabendazole using synthesized MIPs via precipitation polymerization. Synthesized MIPs were packed into solid phase extraction (SPE) cartridge to serve as tailor-made sorbents for the separation of thiabendazole in orange juice...
January 15, 2018: Food Chemistry
Mohamed Rehan, S Zaghloul, F A Mahmoud, A S Montaser, A Hebeish
The ideal biomedical fiber/fabric materials can both promote the drug delivery properties and prevent microbial infection. Herein we present an innovation-based strategy for fabrication of biomedical cotton gauze which concomitantly displays antimicrobial and drug delivery performance properties. The innovative strategy involved three distinct steps: (1) Cationization of cotton gauze by reacting it with 3-chloro-2-hydroxypropyl trimethyl ammonium chloride [Quat-188] or anionization of cotton gauze through partial carboxymethylation...
November 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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