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Current Issue vol. 26, No. 3, 2015, p. 403-631

 

Who is Reading and Who is Citing the JBCS?

On visiting the JBCS webpage, the following information will be easily found: "The Journal of the Brazilian Chemical Society embraces all aspects of chemistry except education, philosophy and history of chemistry. It is a medium for reporting selected original and significant contributions to new chemical knowledge. The JBCS is published monthly by the Brazilian Chemical Society without cost for the authors". No fees for publication are charged and, since 2004, a free open access policy has been adopted.1
The JBCS goal is to be a platform for the dissemination of chemical knowledge for both the Brazilian community and abroad.
Despite not being obsessed about performance parameters, such as journal impact factors, we certainly want to increase our overall impact by assuring that we are serving the community who works with and learns about chemistry mainly by publishing relevant papers.

(Read more at Editorial)


Cover Article
J. Braz. Chem. Soc. 2015, 26(3), 580-591

Nano-Detoxification of Organophosphate Agents by PAMAM Derivatives

Esteban F. Durán-Lara; Fabian Ávila-Salas; Sebastian Galaz; Amalraj John; Adolfo Maricán; Margarita Gutiérrez; Fabiane M. Nachtigall; Fernando D. Gonzalez-Nilo; Leonardo S. Santos

How to cite this article

Comparative in-silico/experimental study of functionalized dendrimers for nano-detoxification of organophosphate agents. The rational design of these nanoparticles allows increase their affinity and ability to capture organophosphates. Details are presented in the Article Nano-Detoxification of Organophosphate Agents by PAMAM Derivatives by Esteban F. Durán-Lara, Fabian Ávila-Salas, Sebastian Galaz, Amalraj John, Adolfo Maricán, Margarita Gutiérrez, Fabiane M. Nachtigall, Fernando D. Gonzalez-Nilo and Leonardo S. Santos on page 580.

http://dx.doi.org/10.5935/0103-5053.20150013

Published online: February 3, 2015
Editorial J. Braz. Chem. Soc. 2015, 26(3), 403-404

Who is Reading and Who is Citing the JBCS?

Joaquim A. Nóbrega; Watson Loh

How to cite this article

 

http://dx.doi.org/10.5935/0103-5053.20150018

Communication J. Braz. Chem. Soc. 2015, 26(3), 405-410

Asymmetric Synthesis of Highly Functionalized Cyclohexa-1,3-dienes via Organocatalyzed One-Pot Three-Component Domino Reaction of Malononitrile with α,β-Unsaturated Imines

Wei Chen; Ren-Zun Zhang; Xiao-Yan Lu; Jian-Wu Xie

How to cite this article

 

The enantioselective synthesis of highly functionalized cyclohexa-1,3-dienes was achieved via an organocatalytic one-pot three-component domino reaction.

http://dx.doi.org/10.5935/0103-5053.20140294

Published online: December 16, 2014

Articles J. Braz. Chem. Soc. 2015, 26(3), 411-419

Non-Thermal Plasma Induced Total Mineralization of Glyphosate in Water in the Presence of Iron II Ions

Moïse Fouodjouo; Samuel Laminsi; Georges Y. Kamgang; Michele T. Mengue; Nito A. Debacher

How to cite this article

 

Glidarc plasma completely mineralized glyphosate into CO2, NH4+ and PO43−. The kinetics has been studied and a plausible degradation pathway has been proposed.

http://dx.doi.org/10.5935/0103-5053.20140292

Published online: December 12, 2014
J. Braz. Chem. Soc. 2015, 26(3), 420-433

Investigation of the Interaction of 2-(2'-Hydroxyphenyl)-benzoxazoles and their Derivatives with B-DNA by Docking and Molecular Dynamics

Fábio dos S. Grasel; Tiago E. de Oliveira; Paulo A. Netz

How to cite this article

 

Quantum calculations, docking and molecular dynamics simulations were performed, analyzing the interactions between six 2-(2'-hydroxyphenyl)-benzoxazoles derivatives and the dodecamer d(CGCGAATTCGCG)2. They showed favorable interactions, without DNA denaturation, and may act as potential biological probes.

http://dx.doi.org/10.5935/0103-5053.20140293

Published online: December 16, 2014

J. Braz. Chem. Soc. 2015, 26(3), 434-450

Experimental and Theoretical Studies of Volatile Corrosion Inhibitors Adsorption on Zinc Electrode

Deiver A. Teixeira; Marco A. G. Valente Jr.; Assis V. Benedetti; Gustavo T. Feliciano; Sebastião C. da Silva; Cecílio S. Fugivara

How to cite this article

 

Amine-based volatile corrosion inhibitors (VCI) are adsorbed on Zn surface under a VCI positive vapor pressure environment, and the adsorbed inhibitors are easily removed by opening the container having the pieces, saving costs and time to clean the metallic surface.

http://dx.doi.org/10.5935/0103-5053.20140296

Published online: December 19, 2014
J. Braz. Chem. Soc. 2015, 26(3), 451-457

Selective Determination of Unsymmetrical Dimethylhydrazine on a Prussian Blue Modified Carbon Paste Electrode

Bagher Sobhanmanesh; Mostafa Najafi

How to cite this article

 

This paper describes a carbon paste electrode modified with Prussian Blue for selective determination of unsymmetrical dimethylhydrazine (UDMH) in the presence of hydrazine.

http://dx.doi.org/10.5935/0103-5053.20140297

Published online: December 19, 2014
J. Braz. Chem. Soc. 2015, 26(3), 458-465

Improving Natural Biopolymeric Membranes Based on Chitosan and Collagen for Biomedical Applications Introducing Silver

Camelia Ungureanu; Daniela Ioniţă; Elena Berteanu; Luminiţa Tcacenco; Adina Zuav; Ioana Demetrescu

How to cite this article

 

New membranes have been elaborated and their physicochemical properties were assessed. The water absorption permitted the evaluation of the diffusion coefficient and the enhancement of antibacterial activity and hemolytic properties was emphasized.

http://dx.doi.org/10.5935/0103-5053.20150298

Published online: January 13, 2015
J. Braz. Chem. Soc. 2015, 26(3), 466-474

A Prompt, Tough and Eco-Friendly (PTOCO) System for Mini-Scale Extraction of Samples for Antioxidant Capacity Assays

Thiago Claus; Oscar O. Santos Júnior; Janksyn Bertozzi; Swami A. Maruyama; Sylvio V. Palombini; Eduardo J. Pilau; Carlos A. P. da Camara; Makoto Matsushita; Jesuí V. Visentainer

How to cite this article

 

The PTOCO (P = Prompt, TO = TOugh and CO = eCO-friendly) system of mini-scale antioxidant compounds extraction attends the need of obtain extracts in sufficient amounts for rapid and efficient application at several analytical methods, turning the routine of analysis in something more enjoyable.

http://dx.doi.org/10.5935/0103-5053.20150299

Published online: January 13, 2015
J. Braz. Chem. Soc. 2015, 26(3), 475-483

Element Determination in Pharmaceuticals Using Direct Solid Analysis-Electrothermal Vaporization Inductively Coupled Plasma Optical Emission Spectrometry

Suelem Kaczala; Adilson B. Costa; Ederson L. Posselt; Juliano S. Barin; Erico M. M. Flores; Valderi L. Dressler

How to cite this article

 

A solid sampling electrothermal vaporization inductively coupled plasma optical emission spectrometry (ETV-ICP OES) method was developed for element determination in pharmaceuticals.

http://dx.doi.org/10.5935/0103-5053.20150300

Published online: January 13, 2015
J. Braz. Chem. Soc. 2015, 26(3), 484-489

Flow Injection Analysis System for Screening Organophosphorus Pesticides by their Inhibitory Effect on the Enzyme Acethylcholinesterase

Marcos P. Silva; Matthieu Tubino; Tereza C. R. Elsholz; Olaf Elsholz; Sabir Khan; Marta M. D. C. Vila

How to cite this article

 

A flow-injection spectrophotometric procedure was developed for screening organophosphorus pesticides. The method is based on the inhibition of acetylcholinesterase immobilized on controlled porous glass beads with acetylcholine chloride as the substrate.

http://dx.doi.org/10.5935/0103-5053.20150301

Published online: January 13, 2015
J. Braz. Chem. Soc. 2015, 26(3), 490-497

Cadmium and Lead Determination in Freshwater and Hemodialysis Solutions by Thermospray Flame Furnace Atomic Absorption Spectrometry Following Cloud Point Extraction

Samara Garcia; Fabiana Gerondi; Thiago R. L. C. Paixão; Marco A. Z. Arruda; Ivanise Gaubeur

How to cite this article

 

A procedure of sequential trace-level Cd and Pb determination by thermospray flame furnace atomic absorption spectrometry, after cloud point extraction, was developed. The proposed method presents high sensibility, low reagent consumption and reduced waste disposal.

http://dx.doi.org/10.5935/0103-5053.20150001

Published online: January 20, 2015

J. Braz. Chem. Soc. 2015, 26(3), 498-505

Rapid Preparation of (BiO)2CO3 Nanosheets by Microwave-Assisted Hydrothermal Method with Promising Photocatalytic Activity Under UV-Vis Light

Juliane Z. Marinho; Lidiaine M. Santos; Leilane R. Macario; Elson Longo; Antonio E. H. Machado; Antonio O. T. Patrocinio; Renata C. Lima

How to cite this article

 

(BiO)2CO3 nanosheets have been successfully prepared by a rapid reaction using the hydrothermal method combined with microwave heating. The as prepared (BiO)2CO3 nanosheets presented good photocatalytic activity for degradation of organic dye Ponceau P4R under UV-Vis light.

http://dx.doi.org/10.5935/0103-5053.20150002

Published online: January 20, 2015

J. Braz. Chem. Soc. 2015, 26(3), 506-512

The Performance of Crosslinking with Divinyl Sulfone as Controlled by the Interplay Between the Chemical Modification and Conformation of Hyaluronic Acid

Andréa A. M. Shimojo; Aline M. B. Pires; Rafael Lichy; Maria H. A. Santana

How to cite this article

 

The effects of the alkaline medium of the reaction mixture on the swelling and rheological properties of hyaluronic acid (HA) microparticles crosslinked with divinyl sulfone with regard to the interplay between the HA conformation and the extension of the crosslinking reaction.

http://dx.doi.org/10.5935/0103-5053.20150003

Published online: January 20, 2015
J. Braz. Chem. Soc. 2015, 26(3), 513-520

Classification and Identification of Petroleum Microorganisms by MALDI-TOF Mass Spectrometry

Célio F. F. Angolini; Eduardo J. Pilau; Patrícia F. Lopes-Oliveira; Isabel N. S. Garcia; Fábio C. Gozzo; Valéria M. de Oliveira; Anita J. Marsaioli

How to cite this article

 

Indigenous bacteria isolated from a crude oil sample were successfully classified in groups which match exactly with molecular identification using the gyrB gene sequence, showing the advantages of using this technique to build petroleum bacteria database.

http://dx.doi.org/10.5935/0103-5053.20150004

Published online: January 20, 2015

J. Braz. Chem. Soc. 2015, 26(3), 521-530

Size Reduced Iron Nitroprusside Particles: an Electrochemical Mediator for the Quantification of Peroxodisulfate and Nitrite

Samrat Devaramani; Ramakrishnappa Thippeswamy; Nathan S. Lawrence

How to cite this article

 

Size reduced iron nitroprusside particles modified carbon paste electrode has been used for the electrochemical oxidation and reduction of NO2- and S2O82- respectively.

http://dx.doi.org/10.5935/0103-5053.20150005

Published online: January 23, 2015
J. Braz. Chem. Soc. 2015, 26(3), 531-536

Quantitative Analysis of Endocrine Disruptors by Comprehensive Two-Dimensional Gas Chromatography

Miriany A. Moreira; Leiliane C. André; Alexandra B. Ribeiro; Marco D. R. G. da Silva; Zenilda L. Cardeal

How to cite this article

 

The graphical abstract exemplifies the comparison between two methods of gas chromatography.

http://dx.doi.org/10.5935/0103-5053.20150006

Published online: January 23, 2015
J. Braz. Chem. Soc. 2015, 26(3), 537-544

An Ion-Pair Reagent Incorporated Polystyrene Nanofiber Applied to Solid Phase Extraction of 5-Hydroxytryptamine in Human Plasma

Yu Wang; Xiaoling Zhou; Yuqin Ma; Xuejun Kang

How to cite this article

 

Sodium dodecyl sulfonate incorporated polystyrene electrospun nanofibers was prepared and applied in ion exchange solid phase extraction.

http://dx.doi.org/10.5935/0103-5053.20150007

Published online: January 23, 2015
J. Braz. Chem. Soc. 2015, 26(3), 545-549

Butyrolactones from the Endophytic Fungus Aspergillus versicolor and their Anti-Tobacco Mosaic Virus Activity

Min Zhou; Jie Lou; Yin-Ke Li; Yue-De Wang; Kun Zhou; Bing-Kun Ji; Wei Dong; Xue-Mei Gao; Gang Du; Qiu-Fen Hu

How to cite this article

 

New butyrolactones aspernolides C and D isolated from Aspergillus versicolor.

http://dx.doi.org/10.5935/0103-5053.20150008

Published online: January 27, 2015

J. Braz. Chem. Soc. 2015, 26(3), 550-554

Improving the Toolbox of Bioreductions by the Use of Continuous Flow Systems

Raquel O. Lopes; Simon Grimm; Joyce B. Ribeiro; Ivana C. R. Leal; Leandro S. M. Miranda; Rodrigo O. M. A. de Souza

How to cite this article

 

This report showed the bioreduction of ethyl 3-oxohexanoate by immobilized Kluyveromyces marxianus cells and tert-butyl 3-oxobutanoate by immobilized Rhodotorula rubra cells under continuous flow conditions leading to the desired β-hydroxy esters corresponding in high yields and enantiomeric excess.

http://dx.doi.org/10.5935/0103-5053.20150009

Published online: January 27, 2015

J. Braz. Chem. Soc. 2015, 26(3), 555-561

Adsorption Mechanism of Lignosulfonate at the Air/Liquid Interface

Mingfang Yan; Dongjie Yang

How to cite this article

 

The configuration of PSL at the air/liquid interface will change from disorder to regularly as the concentration of PSL and the ionic strength of solution increase, but it will array from tightly to loose as the pH value of solution increases.

http://dx.doi.org/10.5935/0103-5053.20150010

Published online: January 30, 2015
J. Braz. Chem. Soc. 2015, 26(3), 562-571

Quinolines by Three-Component Reaction: Synthesis and Photophysical Studies

Eric S. Sales; Juliana M. F. M. Schneider; Marcos J. L. Santos; Adailton J. Bortoluzzi; Daniel R. Cardoso; Willy G. Santos; Aloir A. Merlo

How to cite this article

 

Quinolines were synthesised by three-component reaction using Fe(III) and Yb(III) catalysts. From a single-crystal X-ray analysis for a synthesised quinolone, quinolyl and naphtyl groups connected to the C3 and C24 carbon atoms are twisted by torsion angle of 65.2°.

http://dx.doi.org/10.5935/0103-5053.20150011

Published online: January 30, 2015

J. Braz. Chem. Soc. 2015, 26(3), 572-579

Levels of Soybean Oil and Time of Treatment for Nile Tilapia: a Factorial Design for Total n-3 Fatty Acids, n-6/n-3 and PUFA/SFA Ratios

Ana P. Lopes; Vanessa V. A. Schneider; Paula F. Montanher; Ingrid L. Figueiredo; Hevelyse M. C. Santos; Swami A. Maruyama; Angela M. M. Araújo; Jesuí V. Visentainer

How to cite this article

 

Response surfaces were obtained from a 22 factorial design for total n-3 fatty acids and n-6/n-3 and polyunsaturated fatty acids (PUFA)/saturated fatty acids (SFA) ratios in lipids of Nile tilapia fed with diets containing soybean oil.

http://dx.doi.org/10.5935/0103-5053.20150012

Published online: January 30, 2015
J. Braz. Chem. Soc. 2015, 26(3), 580-591

Nano-Detoxification of Organophosphate Agents by PAMAM Derivatives

Esteban F. Durán-Lara; Fabian Ávila-Salas; Sebastian Galaz; Amalraj John; Adolfo Maricán; Margarita Gutiérrez; Fabiane M. Nachtigall; Fernando D. Gonzalez-Nilo; Leonardo S. Santos

How to cite this article

 

Polyamidoamine (PAMAM) derivatives showed in in vitro studies the ability to capture methamidophos efficiently and could be used as an antidote to maintain acetylcholinesterase activity in poisoning events.

http://dx.doi.org/10.5935/0103-5053.20150013

Published online: February 3, 2015

J. Braz. Chem. Soc. 2015, 26(3), 592-599

Developing Fast and Facile Method for Speciation Analysis of Vanadium (V/IV) Ions with Calmagite Immobilization on Triacetyl Cellulose Membrane in Water Samples

Hossein Tavallali; Rozita Nejabat

How to cite this article

 

The first speciation of V(VI/V) ions with optical sensor, which is more superior in terms of sensitivity and simplicity.

http://dx.doi.org/10.5935/0103-5053.20150014

Published online: February 3, 2015
J. Braz. Chem. Soc. 2015, 26(3), 600-608

Optimization of Process Variables in the Synthesis of Isoamyl Isovalerate Using Sulfonated Organic Heteropolyacid Salts as Catalysts

Keke Chen; Wei Yan; Xiaofang Zhang; Yingying Kuang; Xiujuan Tang; Xiaoxiang Han

How to cite this article

 

Sulfonated organic heteropolyacid salts with superior esterification rate, excellent durability, and unique self-separation property desirable for facile recovery and recycling during homogeneous synthesis of isoamyl isovalerate are reported.

http://dx.doi.org/10.5935/0103-5053.20150015

Published online: February 3, 2015
J. Braz. Chem. Soc. 2015, 26(3), 609-618

Optimized Separation Method for Estriol, 17-β-Estradiol and Progesterone by Capillary Electrochromatography with Monolithic Column and its Application to a Transdermal Emulsion

Rafael Marques; Fernando A. S. Vaz; Hudson C. Polonini; Marcone A. L. de Oliveira

How to cite this article

 

A 23 factorial design was employed to optimize separation between estriol, 17-β-estradiol and progesterone by capillary electrochromatography through a monolithic column based on 3-(methacryloxypropyl)trimethoxysilane monomer. Once optimized, the method was applied to the quantitative analysis of a transdermal emulsion.

http://dx.doi.org/10.5935/0103-5053.20150016

Published online: February 3, 2015
J. Braz. Chem. Soc. 2015, 26(3), 619-631

QSAR Study of the Inhibitors of the Acetyl-CoA Carboxylase 1 and 2 using Bayesian Regularized Genetic Neural Networks: A Comparative Study

Abolfazl Valadkhani; Mohammad Asadollahi-Baboli; Ahmad Mani-Varnosfaderani

How to cite this article

 

The Monte-Carlo sampling strategy was implemented in Bayesian regularized genetic neural network (BRGNN) algorithm for quantitative structure-activity relationship modeling of acetyl-CoA carboxylase (ACC) inhibitors. The calculated activities using BRGNN algorithm in this work are in good agreement with experimental values. The results of the present work emphasizes on the role of positive charge and polarity of molecules on ACC inhibitory activity.

http://dx.doi.org/10.5935/0103-5053.20150017

Published online: February 3, 2015

Online version ISSN 1678-4790 Printed version ISSN 0103-5053
Journal of the Brazilian Chemical Society
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