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Search results for: PROPANOIC ACID OXIDATION
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Reaction of aniline with ammonium persulphate and concentrated hydrochloric acid: Experimental and DFT studies
PublicationIn this paper, the reaction of aniline with ammonium persulphate and concentrated HCl was studied. As a result of our experimental studies, 2,4,6-trichlorophenylamine was identified as the main product. This shows that a high concentration of HCl does not favour oxidative polymerisation of phenylamine, even though the ammonium persulphate/HCl system is widely used in polyaniline synthesis. On the basis of the experimental data...
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Thermal properties of lanthanide(III) complexes with 5-amino-1,3-benzenedicarboxylic acid
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Gallic Acid-Functionalized, TiO2-Based Nanomaterial—Preparation, Physicochemical and Biological Properties
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Effect of sodium acetate on citric acid production from glucose by Yarrowia lipolytica
PublicationZbadano wpływ octanu sodu na produkcję kwasu cytrynowego z glukozy w hodowli wgłębnej przez nie utylizującego octanu mutanta (oct-) Yarrowia lipolytica A-101.1.31. Octan będący ko-substratem glukozy w pożywce zwiększał produktywność i plon kwasu cytrynowego w ciągu pierwszych 24 godzin procesu. Największy pozytywny wpływ na biosyntezę kwasu cytrynowego przez Y. lipolytica A-101.1.31 miał dodatek 2g/L octanu sodu (przy zbadanych...
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Influence of sodium dodecyl sulfate presence on esterification of propylene glycol with lauric acid
PublicationZbadano wpływ obecności dodecylosiarczanu sodu na bezpośrednią estryfikację glikolu propylenowego kwasem laurynowym. Zbadano także rozkład wielkości cząstek mikroemulsji tworzącej się in situ w trakcie estryfikacji glikolu propylenowego kwasem laurynowym w obecności różnych stężeń dodecylosiarczanu. Oceniono wartość równowagi hydrofilowo - lipofilowej zsyntetyzowanych emulgatorów.
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Effect of Long-Term Potato Starch Retention with Citric Acid on Its Properties
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Surface Property Modification of Collagen, Hyaluronic Acid, and Chitosan Films with the Neodymium Laser
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The Oxolane Ring Opening of Some Muramic Acid Derivatives Under Acidic Conditions
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The influence of UV-irradiation on the poly(vinyl alcohol)/hyaluronic acid film properties
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Anomalous Thermal Behavior of Salicylsalicylic Acid and Evidence for a Monotropic Transition to a Nematic Phase
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Examining the Impact of Squaric Acid as a Crosslinking Agent on the Properties of Chitosan-Based Films
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Effect of heterocycle donor in 2-cyanoacrylic acid conjugated derivatives for DSSC applications
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β2-Homo-Amino Acid Scan of µ-Selective Opioid Tetrapeptide TAPP
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Uric acid and xantine-oxidase inhibitors in patients with gout: A re-assessment and an update
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The Effect of Citric Acid on Physicochemical Properties of Hydrophilic Carboxymethyl Starch-Based Films
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The influence of UV-radiation on hyaluronic acid and its blends with addition of collagen and chitosan
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Synthesis of Usnic Acid Derivatives and Evaluation of Their Antiproliferative Activity against Cancer Cells
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Context dependent effects of ascorbic acid treatment in TET2 mutant myeloid neoplasia
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INFLUENCE OF THE INTERMOLECULAR INTERACTION ON PHYSICO-CHEMICAL PROPERTIES OF CHITOSAN/HYALURONIC ACID BLENDS
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The miscibility of collagen/hyaluronic acid/chitosan blends investigated in dilute solutions and solids
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Enhanced thermal properties of poly(lactic acid)/MoS2/carbon nanotubes composites
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Characterization of Mesorhizobium huakuii lipid A containing bothD-galacturonic acid and phosphate residues.
PublicationLipid A jest mieszaniną co najmniej 6 związków, różniących się stopniem fosforylacji i strukturą kwasów tłuszczowych przyłączonych do szkieletu polisacharydowego. Szkielet cukrowy zawiera beta(1'->6)połączone dwie cząsteczki 2,3-diamino-2,3-dideoksyglucosy (DAG)oraz aglikon kwas alfa-D-galaktouronowy.
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How acidic amino acid residues facilitate DNA target site selection
PublicationDespite the negative charge of the DNA backbone, acidic residues (Asp/Glu) commonly participate in the base readout, with a strong preference for cytosine. In fact, in the solved DNA/protein structures, cytosine is recognized almost exclusively by Asp/Glu through a direct hydrogen bond, while at the same time, adenine, regardless of its amino group, shows no propensity for Asp/Glu. Here, we analyzed the contribution of Asp/Glu...
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Application of surface active amino acid ionic liquids as phase-transfer catalyst
PublicationFive structurally related morpholinium derived ionic liquids containing N-acetyl-glycinate anion were synthesized and their thermal stability, surface properties and activity as phase transfer catalysts investigated. The thermal properties were studied by differential scanning calorimetry, while the adsorption at the air/water interface and micellization behavior was analyzed by surface tension measurements, conductometry and isothermal...
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Novel “acid tuned” deep eutectic solvents based on protonated L-proline
PublicationThe paper presents new types of deep eutectic solvents (DESs) based on L-proline protonated using three different acids (hydrochloric, sulfuric and phosphoric)and playing the role of a hydrogen bond acceptor(HBA). Glucose and xylitol were used as hydrogen bond donors (HBD). A series of deep eutectic solvents with various mole ratios were obtained for the systems L-proline: glucose and L-proline: xylitol. Density, melting point,...
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Environmentally Friendly Fabrication of High-Efficient Fe-ZnO/Citric Acid-Modified Cellulose Composite and the Enhancement of Photocatalytic Activity in the Presence of H2O2
PublicationIn the present study, a novel Fe-ZnO/citric acid-modified cellulose composite (x%Fe-ZnOy% CAC) was synthesized using an environmentally friendly hydrothermal method. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV−vis diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FTIR), nitrogen physisorption, and electrochemical and photocurrent density...
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Synthesis and biological activity of novel ester derivatives of N3-(4-metoxyfumaroyl)-(S)-2,3-diaminopropanoic acid containing amide and keto function as inhibitors of glucosamine-6-phosphate synthase
PublicationA short series of novel ester derivatives of N3-4-methoxyfumaroyl-(S)-2,3-diaminopropanoic acid (FMDP) containing amido or keto functions have been designed and synthesized. Their antifungal activity and inhibitory properties toward fungal glucosamine-6-phosphate synthase has also been evaluated. The obtained compounds 11-13 and 15-17 demonstrated good antifunga activity against Candida albicans. Compounds 11-13 displayed also...
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Dynamic Electrochemical Impedance Spectroscopy (DEIS) as a Tool for Analyzing Surface Oxidation Processes on Boron-Doped Diamond Electrodes
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Effect of Inoculation with Probiotics and Ageing Time on Selected Functional Properties and Oxidation of Proteins in Dry-Cured Pork Loins
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Oxidation, Glycation, and Carbamylation of Salivary Biomolecules in Healthy Children, Adults, and the Elderly: Can Saliva Be Used in the Assessment of Aging?
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Preliminary Microbiological Tests of S-Carvone and Geraniol and Selected Derivatives of These Compounds That May Be Formed in the Processes of Isomerization and Oxidation
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Selective and efficient catalytic and photocatalytic oxidation of diphenyl sulphide to sulfoxide and sulfone: the role of hydrogen peroxide and TiO2 polymorph
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The Studies on α-Pinene Oxidation over the TS-1. The Influence of the Temperature, Reaction Time, Titanium and Catalyst Content
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Modelling relation between oxidation resistance and tribological properties of non-toxic lubricants with the use of artificial neural networks
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Electro oxidation of methanol and ethanol on poly(3,4-ethylenedioxythiophene) with dispersed Pt, Pt+Sn, and Pt+Pb particles.
PublicationWpływ mikrocząstek cyny i ołowiu na aktywność katalityczną platyny zdyspergowanej na podłożu polimerowym poli(3,4 etylenodioksytiofenu) w stosunku do reakcji elektrodowego utleniania alkoholu etylowego i metylowego określono za pomocą metody chronowoltamperometrycznej, spektroskopii fotoelektronów w zakresie promieniowania x (XPS) oraz mikrowagi elektrochemicznej. Wykazano,że zarówno cyna jak i ołów zwiększają szybkość procesu...
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The bismuth vanadate thin layers modified by cobalt hexacyanocobaltate as visible-light active photoanodes for photoelectrochemical water oxidation
PublicationBismuth vanadate thin films deposited using the pulsed laser deposition technique were modified using cobalt hexacyanocobaltate (Cohcc). The 2-step method of Cohcc nanocubes preparation was applied: i) metallic cobalt deposition and ii) cobalt electrooxidation in Co(CN)63− containing electrolyte. The presence of CN stretching vibrations was confirmed by Raman spectroscopy. The energy band gap was equal to 2.5 eV and was estimated...
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Band engineering of BiOBr based materials for photocatalytic wastewater treatment via advanced oxidation processes (AOPs) – A review
PublicationSemiconductor based photocatalysts have been an efficient technology for water and wastewater remediation, addressing the concepts of green chemistry and sustainable development. Owing to narrow and suitable band structure, BiOBr is a promising candidate for efficient wastewater treatment via photocatalysis. Enhancement of photocatalytic properties can be obtained by various techniques like doping, element rich strategy, facet...
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Ultrasound assisted dispersive solid phase microextraction using polystyrene-polyoleic acid graft copolymer for determination of Sb(III) in various bottled beverages by HGAAS
PublicationA new polyoleic acid-polystyrene (PoleS) block/graft copolymer was synthesized and applied as adsorbent for ultrasound assisted dispersive solid phase microextraction (UA-DSPME) of Sb(III) in different bottled beverages and analysis using hydride generation atomic absorption spectrometry (HGAAS). Adsorption capacity of the PoleS was 150 mg g−1. Several sample preparation parameters such as sorbent amount, solvent type, pH, sample...
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The effect of freeze-drying and storage on lysozyme activity, lactoferrin content, superoxide dismutase activity, total antioxidant capacity and fatty acid profile of freeze-dried human milk
PublicationPooled human milk samples were freeze-dried and stored for 6 weeks at a temperature of 5 C and 25 C. Freeze-drying decreased the water content of milk by 86.5%, and the obtained lyophilizate was readily soluble in water. The freeze-drying process did not affect superoxide dismutase (SOD) activity, fatty acid (FA) profile or lactoferrin (LF) content, but it decreased total antioxidant capacity (TAC) of human milk by 22.1% and induced...
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Efficient method for Knoevenagel condensation in aqueous solution of amino acid ionic liquids (AAILs)
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CROSSLINKING OF EPOXY-OLIGOESTERIC MIXTURES IN THE PRESENCE OF DIOXYDIPHENYLPROPANE DIGLYCIDYL ETHER MODIFIED WITH ADIPIC ACID
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Lipoic Acid-Coated Silver Nanoparticles: Biosafety Potential on the Vascular Microenvironment and Antibacterial Properties
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Bioactive peptides from beef products fermented by acid whey – in vitro and in silico study
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Synthesis and characterization of metal polycarboxylates constructed from lanthanides(iii) and 1,2,4,5-benzenetetracarboxylic acid
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Adipocyte Fatty Acid‐Binding Protein as a Novel Marker of Psoriasis and Clinical Response to Acitretin
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Aroma profile and lactic acid bacteria characteristic of traditional Slovak cheese “May bryndza”
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Photodegradation of lauric acid at an anatase single crystal surface studied by atomic force microscopy
PublicationBadania obejmowały obserwację zmian topografii powierzchni, za pomocą mikroskopii sił atomowych, cienkiej warstwy kwasu laurynowego osadzonego na monokrysztale anatazu. Warstwę kwasu laurynowego o grubości 80-90 nm naświetlano promieniowaniem z zakresu UV-Vis. Zauważono, że kwas laurynowy osadzany metodą wirującego dysku tworzy na powierzchni monokryształów TiO2 struktury domenowe. Stwierdzono, że podczas naświetlania nie ulega...
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Catalysis on polymer supports: ESR of molybdenum (V) dispersed in poly(acrylic acid) matrices
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Effect of thienyl units in cyanoacrylic acid derivatives toward dye-sensitized solar cells
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The thermal degradation of acrylic pressure-sensitive adhesives based on butyl acrylate and acrylic acid
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