31 results match your criteria Chemical Papers[Journal]

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Fluorescent, colourimetric, and ratiometric probes based on diverse fluorophore motifs for mercuric(II) ion (Hg) sensing: highlights from 2011 to 2019.

Chem Zvesti 2020 May 16:1-38. Epub 2020 May 16.

Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF UK.

Though it has not been shown to deliver any biological importance, mercuric(II) ion (Hg) is a deleterious cation which poses grievous effects to the human body and/or the ecosystem, hence, the need for its sensitive and selective monitoring in both environmental and biological systems. Over the years, there has been a great deal of work in the use of fluorescent, colourimetric, and/or ratiometric probes for Hg recognition. Essentially, the purpose of this review article is to give an overview of the advances made in the constructions of such probes based on the works reported in the period from 2011 to 2019. Read More

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http://dx.doi.org/10.1007/s11696-020-01180-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7229441PMC
May 2020
1.468 Impact Factor

An effect of the tubular baffles configuration in an agitated vessel with a high-speed impeller on the power consumption.

Chem Zvesti 2018 13;72(11):2933-2943. Epub 2018 Jun 13.

Department of Chemical Engineering, West Pomeranian University of Technology, Szczecin, al. Piastów 42, 71-065 Szczecin, Poland.

The results of the power consumption for an agitated vessel equipped with vertical tubular baffles and high-speed impeller are presented in the paper. Aqueous solutions of CMC were agitated within transitional range of the non-Newtonian liquid flow in the agitated vessel of inner diameter equal to 0.6 m. Read More

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http://link.springer.com/10.1007/s11696-018-0533-4
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http://dx.doi.org/10.1007/s11696-018-0533-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6096688PMC
June 2018
2 Reads

Qualitative analysis of activated sludge using FT-IR technique.

Chem Zvesti 2018 9;72(11):2699-2706. Epub 2018 Jun 9.

3Faculty of Energy and Environmental Engineering, Environmental Biotechnology Department, Silesian University of Technology, 2 Akademicka Str., 44-100 Gliwice, Poland.

The ability to measure and control the composition of activated sludge is an important issue, aiming at evaluating the effectiveness of changes occurring in the sludge, what determines its usefulness to treat wastewater. In this research, diffuse reflectance infrared Fourier transform (FTIR-DRIFT) technique was used, which relies on measuring the reflectance of the powdered substance's surface layer and capturing spectra in range of infrared wave. First, spectra correlation table of the substances mostly occurring in wastewater was developed to assess the main components of the tested samples of activated sludge. Read More

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http://dx.doi.org/10.1007/s11696-018-0514-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6096666PMC
June 2018
39 Reads

Comparison of the oxidative stability of soybean and sunflower oils enriched with herbal plant extracts.

Chem Zvesti 2018 28;72(10):2607-2615. Epub 2018 May 28.

Faculty of Food Sciences, Department of Chemistry, Warsaw University of Life Sciences (WULS-SGGW), Nowoursynowska 159C St, 02-776 Warsaw, Poland.

The present study was conducted to determine and compare the oxidative stability of soybean and sunflower oils using differential scanning calorimetry (DSC). These edible oils were enriched with marjoram ( L.), thyme ( L. Read More

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http://link.springer.com/10.1007/s11696-018-0516-5
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http://dx.doi.org/10.1007/s11696-018-0516-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6096694PMC
May 2018
5 Reads

The range of protein hydrolysis and biogenic amines content in selected acid- and rennet-curd cheeses.

Chem Zvesti 2018 2;72(10):2599-2606. Epub 2018 May 2.

4Department of Food Science and Technology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.

The aim of this experiment was to assess the range of proteolysis and biogenic amine content in the selected rennet- and acid-curd cheeses available on the Polish market, randomly chosen for the analyses: three ripened hard with eyes cheeses, three ripened hard smooth cheeses, three ripened soft moulded cheeses, three fresh unripened acid-curd cheeses, three ripened acid-curd cheeses with slimming bacteria-fried, and three ripened acid-curd cheeses with smear bacteria. The results allowed calculating the subsequent indexes and depth of proteolysis. It was found that the acid-curd short ripened cheese (harzer) was characterized by the greatest range of proteolysis and the biogenic amine content in comparison to other rennet- and acid-curd cheeses. Read More

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https://link.springer.com/content/pdf/10.1007%2Fs11696-018-0
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https://www.researchgate.net/publication/296056511_Quantitat
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http://link.springer.com/10.1007/s11696-018-0490-y
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http://dx.doi.org/10.1007/s11696-018-0490-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6096667PMC
May 2018
26 Reads

Dicationic ionic liquids as new feeding deterrents.

Chem Zvesti 2018 16;72(10):2457-2466. Epub 2018 May 16.

2Institute of Plant Protection - National Research Institute, 60-318 Poznan, Poland.

Abstract: In this study, new quaternary bis(ammonium) salts with alkyl-1,X-bis(dimethyldecylammonium) cation and saccharinate, acesulfamate, lactate and pyroglutamate anions were synthesized and characterized by H and C NMR spectroscopy. Thermal gravimetric and differential scanning calorimetry analyses confirmed that all salts were thermally stable and the majority of them exhibited melting points below 100 °C. The physicochemical properties (viscosity, density, refractive index values, and solubility) of the obtained salts were determined for three compounds with lactate anions. Read More

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http://dx.doi.org/10.1007/s11696-018-0495-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6096682PMC
May 2018
3 Reads

The influence of chemical structure on thermal properties and surface morphology of polyurethane materials.

Chem Zvesti 2018 8;72(5):1249-1256. Epub 2017 Dec 8.

1Department of Commodity Industrial Science and Chemistry, Gdynia Maritime University, 83 Morska Street, 81-225 Gdynia, Poland.

The surface morphology and thermal properties of polyurethanes can be correlated to their chemical composition. The hydrophilicity, surface morphology, and thermal properties of polyurethanes (differed in soft segments and in linear/cross-linked structure) were investigated. The influence of poly([,]-3-hydroxybutyrate) presence in soft segments and blending of polyurethane with polylactide on surface topography were also estimated. Read More

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http://dx.doi.org/10.1007/s11696-017-0358-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5908830PMC
December 2017
5 Reads

The evidence of proteases in sprouted seeds and their application for animal protein digestion.

Chem Zvesti 2018 4;72(5):1213-1221. Epub 2017 Dec 4.

2Faculty of Chemistry, Rzeszow University of Technology, 35-959, Rzeszow, Poland.

It has been experimentally proven that germinated plant seeds, such as leek, red clover, broccoli, and others contain proteases, which are able to digest animal protein such as gelatin, bovine albumin, casein, and egg albumin. Preliminary tests were carried out with the use of a semi-qualitative gelatin test, which is often applied to prove the presence of fruit enzymes. Quantitative examinations were carried out with the use of a ninhydrin reaction for amino acid determination as well as the Bradford and Smith methods for protein determination. Read More

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http://link.springer.com/10.1007/s11696-017-0341-2
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http://dx.doi.org/10.1007/s11696-017-0341-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5908832PMC
December 2017
4 Reads

The influence of filler type on the separation properties of mixed-matrix membranes.

Chem Zvesti 2018 15;72(5):1095-1105. Epub 2017 Dec 15.

Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, M. Strzody 9 Street, 44-100 Gliwice, Poland.

Chitosan-based membranes filled with different metal oxide particles were prepared and their performance in ethanol dehydration process depending on the type of oxide and loading was discussed. For membrane preparation three oxides: TiO, CrO or FeO were selected. From experimental data suitable ethanol and water transport coefficients were evaluated. Read More

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http://dx.doi.org/10.1007/s11696-017-0363-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5908829PMC
December 2017
3 Reads

Effect of medium pH on chemical selectivity of oxalic acid biosynthesis by W78C in submerged batch cultures with sucrose as a carbon source.

Chem Zvesti 2018 5;72(5):1089-1093. Epub 2017 Dec 5.

1Department of Biotechnology and Food Analysis, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wroclaw University of Economics, Komandorska 118-120, 53-345 Wrocław, Poland.

The pH of the medium is the key environmental parameter of chemical selectivity of oxalic acid biosynthesis by . The activity of the enzyme oxaloacetate hydrolase, which is responsible for decomposition of oxaloacetate to oxalate and acetate inside the cell of the fungus, is highest at pH 6. In the present study, the influence of pH in the range of 3-7 on oxalic acid secretion by W78C from sucrose was investigated. Read More

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http://dx.doi.org/10.1007/s11696-017-0354-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5908826PMC
December 2017
1 Read

Power consumption for an agitated vessel equipped with pitched blade turbine and short baffles.

Chem Zvesti 2018 28;72(5):1081-1088. Epub 2017 Nov 28.

Department of Chemical Engineering, West Pomeranian University of Technology, al. Piastów 42, 71-065 Szczecin, Poland.

Power characteristics for an agitated vessel equipped with planar short baffles of length and pitched blade turbine of pitch are presented in the paper. The studies were carried out in the vessel of inner diameter  = 0.6 m, where the baffles were located in the distance from the vessel bottom ( +  = ). Read More

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http://dx.doi.org/10.1007/s11696-017-0346-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5908823PMC
November 2017
1 Read

The application of 7H-indolo[1,2-a]quinolinium merocyanine as a new water sensor in organic solvents.

Chem Zvesti 2018 28;72(3):741-752. Epub 2017 Oct 28.

Department of Physical Chemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland.

Abstract: The 7H-indolo[1,2-a]quinolinium merocyanine was applied as a new water sensor in organic solvents such as ethanol, propane-1-ol, propane-2-ol, DMSO, and DMF. The spectral changes of the dye caused by the addition of increasing amount of water into an organic solvent were investigated. Based on the results, the calibration curves were found as a relation between the position of the absorption band of the dye and the water concentration ranging from about 0. Read More

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http://dx.doi.org/10.1007/s11696-017-0328-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5846992PMC
October 2017
1 Read

Comparative PIV and LDA studies of Newtonian and non-Newtonian flows in an agitated tank.

Chem Zvesti 2018 4;72(3):593-602. Epub 2017 Oct 4.

2School of Chemical Engineering, The University of Birmingham, Edgbaston, Birmingham, B15 2TT UK.

The paper presents results of an experimental study of the fluid velocity field in a stirred tank equipped with a Prochem Maxflo T (PMT) type impeller which was rotating at a constant frequency of  = 4.1 or 8.2 s inducing transitional ( = 499 or 1307) or turbulent ( = 2. Read More

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http://link.springer.com/10.1007/s11696-017-0307-4
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http://dx.doi.org/10.1007/s11696-017-0307-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5846996PMC
October 2017
9 Reads

Continuous laccase concentration in an aqueous two-phase system.

Chem Zvesti 2018 11;72(3):555-566. Epub 2017 Nov 11.

1Faculty of Process and Environmental Engineering, Lodz University of Technology, ul. Wólczańska 213, 90-942 Lodz, Poland.

An approach to describe continuous partitioning of laccase in a PEG 6000-phosphate aqueous two-phase system was proposed. The laccase was separated from crude supernatant of -submerged culture, and all the experiments were carried out in 25 °C and pH 7 conditions. Masses of both phases and their compositions at phase equilibrium, as well as laccase activity concentrations at different mixing points, were measured in batch experiments. Read More

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http://link.springer.com/10.1007/s11696-017-0330-5
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http://dx.doi.org/10.1007/s11696-017-0330-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5846976PMC
November 2017
5 Reads

Spectroelectrochemistry of poly(3-hexylthiophenes) in solution.

Chem Zvesti 2018 28;72(1):251-259. Epub 2017 Aug 28.

1Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland.

Abstract: The first comprehensive spectroelectrochemical account of the behaviour of regioregular (RR-P3HT) and statistical (ST-P3HT) poly(3-hexylthiophenes) in solution is presented, in contrast to the many reports dealing with P3HT films merely deposited from solution. The conducted experiments revealed that the two types of P3HTs behave in sharply different ways upon the application of electrochemical stimuli: ST-P3HT readily precipitates at mildly oxidative potentials, while the precipitation of the RR-P3HT takes place to a much lesser extent, even at higher potentials. The two polymers, studied via UV-Vis-NIR-EPR spectroelectrochemistry, exhibited properties mostly in line with earlier reports. Read More

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http://dx.doi.org/10.1007/s11696-017-0277-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5760595PMC
August 2017
2 Reads

The long-term studies of osmotic membrane distillation.

Authors:
Marek Gryta

Chem Zvesti 2018 3;72(1):99-107. Epub 2017 Aug 3.

Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland.

The results of osmotic membrane distillation carried out for 2.5 years were presented in this work. The influence of the process conditions, such as temperature and brine concentration on the permeate flux, was investigated. Read More

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http://dx.doi.org/10.1007/s11696-017-0261-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5760615PMC
August 2017
6 Reads
1.470 Impact Factor

A simple economic and heat transfer analysis of the nanoparticles use.

Authors:
Sylwia Wciślik

Chem Zvesti 2017 27;71(12):2395-2401. Epub 2017 Jun 27.

Department of Environmental Engineering, Kielce University of Technology, Aleja Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland.

In this paper, a review of the impact of most common nanoparticles on the Leidenfrost temperature in heat transfer applications is delivered. Moreover, a simple economic analysis of the nanoparticles use is proposed. When coolant is distilled water, can range 150-220 °C; occasionally, it can even amount to over 400 °C. Read More

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http://dx.doi.org/10.1007/s11696-017-0234-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5648769PMC
June 2017
1 Read

Degradability of cross-linked polyurethanes based on synthetic polyhydroxybutyrate and modified with polylactide.

Chem Zvesti 2017 14;71(11):2243-2251. Epub 2017 Jun 14.

Department of Commodity Industrial Science and Chemistry, Gdynia Maritime University, 83 Morska Street, 81-225 Gdynia, Poland.

In many areas of application of conventional non-degradable cross-linked polyurethanes (PUR), there is a need for their degradation under the influence of specific environmental factors. It is practiced by incorporation of sensitive to degradation compounds (usually of natural origin) into the polyurethane structure, or by mixing them with polyurethanes. Cross-linked polyurethanes (with 10 and 30%wt amount of synthetic poly([]-3-hydroxybutyrate) (R,S-PHB) in soft segments) and their physical blends with poly([d,l]-lactide) (PDLLA) were investigated and then degraded under hydrolytic (phosphate buffer solution) and oxidative (CoCl/HO) conditions. Read More

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http://dx.doi.org/10.1007/s11696-017-0218-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5655605PMC
June 2017
6 Reads

SCRAMBLE'N'GAMBLE: a tool for fast and facile generation of random data for statistical evaluation of QSAR models.

Chem Zvesti 2017 5;71(11):2217-2232. Epub 2017 Jun 5.

ChemPharmSoft, 01-926 Warsaw, Poland.

A common practice in modern QSAR modelling is to derive models by variable selection methods working on large descriptor pools. As pointed out previously, this is intrinsically burdened with the risk of finding random correlations. Therefore it is desirable to perform tests showing the performance of models built on random data. Read More

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http://dx.doi.org/10.1007/s11696-017-0215-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5655615PMC
June 2017
1 Read

Manganese(II) complexes with Bn-tpen as powerful catalysts of cyclohexene oxidation.

Chem Zvesti 2017 26;71(11):2085-2093. Epub 2017 May 26.

Department of Physical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, 35-959 Rzeszów, Poland.

Manganese(II) complex [(Bn-tpen)Mn] activated dioxygen for oxidation of cyclohexene in acetonitrile (MeCN) and methanol (MeOH). In MeCN, ketone (2-cyclohexen-1-one), alcohol (2-cyclohexen-1-ol) and small amounts of epoxide (cyclohexene oxide) were produced in this reaction, while in MeOH only ketone was formed. In the most efficient experiment, the combination of 2. Read More

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http://dx.doi.org/10.1007/s11696-017-0201-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5655609PMC
May 2017
4 Reads

Enzymatic oligomerization and polymerization of arylamines: state of the art and perspectives.

Chem Zvesti 2017 19;71(2):199-242. Epub 2016 Dec 19.

Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland.

The literature concerning the oxidative oligomerization and polymerization of various arylamines, e.g., aniline, substituted anilines, aminonaphthalene and its derivatives, catalyzed by oxidoreductases, such as laccases and peroxidases, in aqueous, organic, and mixed aqueous organic monophasic or biphasic media, is reviewed. Read More

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http://dx.doi.org/10.1007/s11696-016-0094-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495875PMC
December 2016
3 Reads

A new model of cavern diameter based on a validated CFD study on stirring of a highly shear-thinning fluid.

Chem Zvesti 2017 24;71(7):1255-1269. Epub 2017 Jan 24.

Institute of Chemical Engineering and Environmental Protection Processes, West Pomeranian University of Technology, Aleja Piastow 42, 71-065 Szczecin, Poland.

Results of numerical simulations of momentum transfer for a highly shear-thinning fluid (0.2% Carbopol) in a stirred tank equipped with a Prochem Maxflo T type impeller are presented. The simulation results were validated using LDA data and both tangential and axial force measurements in the laminar and early transitional flow range. Read More

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http://dx.doi.org/10.1007/s11696-016-0119-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5486582PMC
January 2017
3 Reads

New thermoplastic poly(carbonate-urethane)s based on chain extenders with sulfur atoms.

Chem Zvesti 2017 22;71(7):1195-1204. Epub 2016 Dec 22.

Department of Polymer Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, ul. Gliniana 33, 20-614 Lublin, Poland.

New thermoplastic segmented polyurethanes were obtained by a one-step melt polyaddition using 40, 50 and 60 mol% poly(hexane-1,6-diyl carbonate) diol of [Formula: see text] g mol, 1,1'-methanediylbis(4-isocyanatobenzene) and 2,2'-[sulfanediylbis(benzene-1,4-diyloxy)]diethanol, 2,2'-[oxybis(benzene-1,4-diylsulfanediyl)]diethanol or 2,2'-[sulfanediylbis(benzene-1,4-diylsulfanediyl)]diethanol as a chain extender. FTIR, atomic force microscopy, differential scanning calorimetry and thermogravimetry were used to examine the polyurethanes' structure and thermal properties. Moreover, their Shore / hardness, tensile, adhesive and optical attributes were determined. Read More

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http://dx.doi.org/10.1007/s11696-016-0112-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5486585PMC
December 2016
3 Reads

Determination of mycotoxins, alkaloids, phytochemicals, antioxidants and cytotoxicity in Asiatic ginseng (Ashwagandha, Dong quai, ).

Chem Zvesti 2017 9;71(6):1073-1082. Epub 2016 Dec 9.

Department of Physiology and Toxicology, Faculty of Natural Sciences, Institute of Experimental Biology, Kazimierz Wielki University, Chodkiewicza 30 Str., Bydgoszcz, Poland.

Mycotoxins and selected hazardous alkaloids in the medicinal plants (Panax , , ) and dietary supplements were determined. Purine alkaloids were found in majority of samples; however, isoquinoline alkaloids were less abundant than indole. The predominant alkaloids appear to be caffeine (purine group), harman (indole group) and berberine (isoquinoline). Read More

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http://link.springer.com/10.1007/s11696-016-0028-0
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http://dx.doi.org/10.1007/s11696-016-0028-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5425489PMC
December 2016
13 Reads

Phosphonium ionic liquids as extractants for recovery of ruthenium(III) from acidic aqueous solutions.

Chem Zvesti 2017 21;71(6):1065-1072. Epub 2016 Dec 21.

Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.

The aim of this work is to investigate extraction of ruthenium(III) from acidic aqueous solutions with phosphonium ionic liquids such as trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101), trihexyl(tetradecyl)phosphonium (2,4,4-trimethylpentyl)phosphinate (Cyphos IL 104) and tributyl(tetradecyl)phosphonium chloride (Cyphos IL 167) as extractants. The influence of HCl content in the feed solutions on extraction of Ru(III) was investigated. The research was performed for model solutions containing Ru(III) and a mixture of waste solutions containing Ru(III) and Rh(III). Read More

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http://dx.doi.org/10.1007/s11696-016-0027-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5425505PMC
December 2016
10 Reads

Quantitative analysis of amphiphilic -alkyloxypyridinecarboximidamide by liquid chromatography-tandem mass spectrometry.

Chem Zvesti 2017 10;71(5):953-960. Epub 2016 Dec 10.

Institute of Bioorganic Chemistry, Polish Academy of Science, Z. Noskowskiego St. 12/14, 61-704 Poznan, Poland.

LC-MS/MS method to determine hydrophobic -alkyloxy substituted amidines: -(2-ethylhexyloxy)pyridine-2-carboximidamide, -(2-ethylhexyloxy)pyridine-3-carboximidamide, -(2-ethylhexyloxy)pyridine-4-carboximidamide, -decyloxy pyridine-2-carboximidamide, -decyloxypyridine-3-carboximidamide and -decyloxypyridine-4-carboximidamide was developed and validated in terms of linearity, precision and accuracy. The developed method was successfully applied to monitor and control the synthesis process. The experimental data points indicated that the straight chain alkyl bromide reacted most rapidly than branched alkyl bromide and the enhancement of the reaction efficiency strongly depended on reaction temperature. Read More

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http://dx.doi.org/10.1007/s11696-016-0019-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5403844PMC
December 2016
10 Reads

Valorisation to biogas of macroalgal waste streams: a circular approach to bioproducts and bioenergy in Ireland.

Chem Zvesti 2017 16;71(4):721-728. Epub 2016 Dec 16.

Department of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, 9 Ireland.

Seaweeds (macroalgae) have been recently attracting more and more interest as a third generation feedstock for bioenergy and biofuels. However, several barriers impede the deployment of competitive seaweed-based energy. The high cost associated to seaweed farming and harvesting, as well as their seasonal availability and biochemical composition currently make macroalgae exploitation too expensive for energy production only. Read More

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http://dx.doi.org/10.1007/s11696-016-0005-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5360856PMC
December 2016
12 Reads

Can glycoprofiling be helpful in detecting prostate cancer?

Chem Zvesti 2015 Jan 28;69(1):90-111. Epub 2014 Nov 28.

Department of Glycobiotechnology, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK - 845 38, Slovakia.

Glycans are chains of carbohydrates attached to proteins (glycoproteins and proteoglycans) or lipids (glycolipids). Glycosylation is a posttranslational modification and glycans have a wide range of functions in a human body including involvement in oncological diseases. Change in a glycan structure cannot only indicate presence of a pathological process, but more importantly in some cases also its stage. Read More

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http://dx.doi.org/10.1515/chempap-2015-0052DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4886849PMC
January 2015
6 Reads

Graphene as a signal amplifier for preparation of ultrasensitive electrochemical biosensors.

Chem Zvesti 2015 Jan 28;69(1):112-133. Epub 2014 Nov 28.

Slovak academy of sciences, Institute of Chemistry, Department of Glycobiotechnology, Dúbravská cesta 9, Bratislava, SK-84538.

Early diagnostics of diseases performed with minimal money and time consumption has become achievable due to recent advances in development of biosensors. These devices use biorecognition elements for selective interaction with an analyte and signal readout is obtained via different types of transducers. Operational characteristics of biosensors have been reported to improve substantially, when a diverse range of nanomaterials was employed. Read More

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http://dx.doi.org/10.1515/chempap-2015-0051DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4884446PMC
January 2015
5 Reads

Methyl-2-arylidene hydrazinecarbodithioates: synthesis and biological activity.

Chem Zvesti 2013 19;67(6):650-656. Epub 2013 Feb 19.

1346Department of Pharmaceutical Sciences, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835 215 India.

Methyl-2-arylidene hydrazine-carbodithioate has not been of particular interest to researchers even though its metal complexes are extensively reported on due to their biological activity. This study examined the cytostatic and antiviral activity of twelve methyl-2-arylidene hydrazinecarbodithioates reported by many researchers as intermediates for the synthesis of thiosemicarbazides and the preparation of their metal complexes. Compounds , , and with tridentate ligand features were found to have the lowest IC value (6. Read More

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http://dx.doi.org/10.2478/s11696-013-0346-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7088650PMC
February 2013

Key side products due to reactivity of dimethylmaleoyl moiety as amine protective group.

Chem Zvesti 2009 Oct 25;63(5):592-597. Epub 2009 Aug 25.

Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.

Dimethylmaleoyl (DMM) moiety has become an important amine protective group in sugar chemistry. We disclose herein that DMM-containing d-glucosamine analogues, because of their electrophilic nature, are prone to reactions with strong nucleophiles, such as hydrazine, resulting in a set of undesired side products that are difficult to detect, yet proved to be problematic for organic synthesis. Read More

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http://dx.doi.org/10.2478/s11696-009-0048-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952067PMC
October 2009
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