JBCS

22:00, Sun Jun 16

Open Access/APCs

Current Issue vol. 30, No. 7, 2019, p. 1341-1565

 

This cover reflects the capability of an ozonation treatment in reducing the antimicrobial activity of domestic and hospital wastewater samples, thus proving to be an effective polishing treatment for such effluents. The antimicrobial activity of these samples is caused by the presence of residues of several antibiotics acting synergistically and is reduced by the mineralization of these molecules through ozonation. Details are presented in the Article Fluoroquinolones in Hospital Wastewater: Analytical Method, Occurrence, Treatment with Ozone and Residual Antimicrobial Activity Evaluation by Caio Rodrigues-Silva, Rafael S. Porto, Sabrina G. dos Santos, Jerusa Schneider and Susanne Rath on page 1447.


Cover Article
J. Braz. Chem. Soc. 2019, 30(7), 1447-1457

Fluoroquinolones in Hospital Wastewater: Analytical Method, Occurrence, Treatment with Ozone and Residual Antimicrobial Activity Evaluation

Caio Rodrigues-Silva ; Rafael S. Porto; Sabrina G. dos Santos; Jerusa Schneider; Susanne Rath

How to cite this article

This cover reflects the capability of an ozonation treatment in reducing the antimicrobial activity of domestic and hospital wastewater samples, thus proving to be an effective polishing treatment for such effluents. The antimicrobial activity of these samples is caused by the presence of residues of several antibiotics acting synergistically and is reduced by the mineralization of these molecules through ozonation. Details are presented in the Article Fluoroquinolones in Hospital Wastewater: Analytical Method, Occurrence, Treatment with Ozone and Residual Antimicrobial Activity Evaluation by Caio Rodrigues-Silva, Rafael S. Porto, Sabrina G. dos Santos, Jerusa Schneider and Susanne Rath on page 1447.

http://dx.doi.org/10.21577/0103-5053.20190040

Published online: March 8, 2019

Review J. Braz. Chem. Soc. 2019, 30(7), 1341-1349

Films Formed on Carbon Steel in Sweet Environments - A Review

Igor A. Fioravante; Ronaldo S. Nunes; Heloisa A. Acciari; Eduardo N. Codaro

How to cite this article

 

Illustration of the cross section of an oil pipeline showing the scale formed by sweet corrosion.

http://dx.doi.org/10.21577/0103-5053.20190055

Published online: April 8, 2019

Articles J. Braz. Chem. Soc. 2019, 30(7), 1350-1356

Fatty Acid Determination in Fermented Milk Samples Employing Direct Esterification and Gas Chromatography

Angélica F. B. Piccioli ; Patrícia D. S. Santos; Roberta da Silveira; Elton Bonafé; Jesuí V. Visentainer; Oscar O. Santos

How to cite this article

 

A fast and simple analytical method was developed for the determination of fatty acid in fermented milk samples employing direct esterification and gas chromatography.

http://dx.doi.org/10.21577/0103-5053.20190027

Published online: February 19, 2019

J. Braz. Chem. Soc. 2019, 30(7), 1357-1377

Maturation and Maceration Effects on Tropical Red Wines Assessed by Chromatography and Analysis of Variance - Principal Component Analysis

Janaína A. Barbará; Érica A. S. Silva; Aline C. T. Biasoto; Adriano A. Gomes; Luiz C. Correa; Patrícia C. S. Leão; Cláudia A. Zini

How to cite this article

 

Different experimental conditions were tested in the elaboration of Syrah wines. Wines produced from riper grapes and macerated over longer periods were richer in volatiles with pleasant aromas and phenolics that are known to provide sensory characteristics appropriate to wine.

http://dx.doi.org/10.21577/0103-5053.20190032

Published online: February 25, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1378-1394

Design, Synthesis, Trypanocidal Activity, and Studies on Human Albumin Interaction of Novel S-Alkyl-1,2,4-triazoles

Tatiany N. Franklim; Leonardo Freire-de-Lima; Otávio A. Chaves; Isabel F. LaRocque-de-Freitas; Joana D. da Silva-Trindade; José C. Netto‑Ferreira; Célio G. Freire-de-Lima; Debora Decoté-Ricardo; José O. Previato; Lucia Mendonça‑Previato; Marco E. F. de Lima

How to cite this article

 

A series of eight new 1,2,4-triazoles derived from natural piperine was synthesized. Three compounds showed the best profile of toxic effects against T. cruzi, comparable to that obtained to benznidazole.

http://dx.doi.org/10.21577/0103-5053.20190033

Published online: February 26, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1395-1405

A Comparative Study on Chemical Composition, Antileishmanial and Cytotoxic Activities of the Essential Oils from Leaves of Guarea macrophylla (Meliaceae) from Two Different Regions of São Paulo State, Brazil, Using Multivariate Statistical Analysis

Emerson A. Oliveira; Euder G. A. Martins; Marisi G. Soares; Daniela A. Chagas‑Paula; Luiz F. D. Passero; Patricia Sartorelli; João L. Baldim; João Henrique G. Lago

How to cite this article

 

A study on chemical composition, antileishmanial and cytotoxic activities of the essential oils from leaves of Guarea macrophylla (Meliaceae) using multivariate statistical analysis was performed in the present work.

http://dx.doi.org/10.21577/0103-5053.20190035

Published online: February 27, 2019

J. Braz. Chem. Soc. 2019, 30(7), 1406-1414

Determination of Plant Growth Regulators in Chinese Herbal Medicine: A Comparison of Liquid (QuEChERS) and Solid (MSPD) Extraction Methods

Bingjun Han ; Bing Qian; Yan He; Lixu Peng

How to cite this article

 

Quick, easy, cheap, effective, rugged and safe (QuEChERS) and matrix solid-phase dispersion (MSPD) methods were chosen and compared for the determination of the plant growth regulators in Chinese herbal medicines.

http://dx.doi.org/10.21577/0103-5053.20190036

Published online: February 28, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1415-1424

Characterization and in silico Mutagenic Assessment of a New Betahistine Degradation Impurity

Murilo B. M. de Mello; Antonio A. F. de Oliveira; Caroline L. de Oliveira; Mariah A. Ultramari; Fernando H. S. Gama; Alessandra Mascarello; Cristiano R. W. Guimarães; Miller N. de Freitas; Carlos E. Cunha; Tiago C. Lourenço; Fernanda P. Ferreira; João L. C. Lopes; Giuliano C. Clososki

How to cite this article

 

Systematic investigation of a forced degradation sample led to the characterization of a new betahistine impurity.

http://dx.doi.org/10.21577/0103-5053.20190037

Published online: March 1, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1425-1436

Synthesis and Biological Evaluation of New Eugenol-Derived 1,2,3-Triazoles as Antimycobacterial Agents

Thiago dos Santos; Camila M. Coelho ; Thiago C. Elias; Fallon S. Siqueira; Eloísa S. S. D. Nora; Marli M. A. de Campos; Gabriel A. P. de Souza; Luiz F. L. Coelho; Diogo T. Carvalho

How to cite this article

 

Sixteen eugenol-derived 1,2,3-triazoles were synthesized and evaluated against rapid growing mycobacteria of difficult clinical management.

http://dx.doi.org/10.21577/0103-5053.20190038

Published online: March 6, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1437-1446

Assessing the Spatial Distribution of Key Flavonoids in Mentha × piperita Leaves: An Application of Desorption Electrospray Ionization Mass Spectrometry Imaging (DESI-MSI)

Julia R. L. e Freitas; Pedro H. Vendramini; Júlio O. F. Melo ; Marcos N. Eberlin; Rodinei Augusti

How to cite this article

 

Desorption electrospray ionization mass spectrometry imaging (DESI-MSI) was used to assess the spatial distribution of some key flavonoids in peppermint (Mentha × piperita L.) leaves.

http://dx.doi.org/10.21577/0103-5053.20190039

Published online: March 8, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1447-1457

Fluoroquinolones in Hospital Wastewater: Analytical Method, Occurrence, Treatment with Ozone and Residual Antimicrobial Activity Evaluation

Caio Rodrigues-Silva ; Rafael S. Porto; Sabrina G. dos Santos; Jerusa Schneider; Susanne Rath

How to cite this article

 

Fluoroquinolones were detected in wastewater samples (up to 34 ng mL-1). Ozonation can remove antimicrobial activity from these samples.

http://dx.doi.org/10.21577/0103-5053.20190040

Published online: March 8, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1458-1467

Ligand and Solvent Effects on the Structural and Optical Properties of Au13L83+ Clusters: a Density Functional Theory Study

Edna S. Machado ; Nailton M. Rodrigues; Marcus V. A. Prado; José D. L. Dutra; Nivan B. da Costa Júnior; Viviane C. Felicíssimo

How to cite this article

 

Optical absorption spectra in gas phase and in solvents of different polarities for Au13L83+.

http://dx.doi.org/10.21577/0103-5053.20190041

Published online: March 12, 2019

J. Braz. Chem. Soc. 2019, 30(7), 1468-1474

Determination of Coconut Oil Adulteration with Soybean Oil by Direct Infusion Electrospray Ionization Mass Spectrometry

Jessica S. Pizzo ; Marília B. Galuch ; Patrícia D. S. Santos; Luciana P. Manin ; Caroline D. Zappielo ; Orivaldo J. Silva Filho; Oscar O. Santos ; Jesuí V. Visentainer

How to cite this article

 

Coconut oil is used domestically because of its health benefits. Nevertheless, it is a high-cost material and it has been subject to adulterations with lower price oils and fats. This study reports a fast, simple and conclusive methodology to detect low quantities of intentionally adulterated coconut oil with soybean oil.

http://dx.doi.org/10.21577/0103-5053.20190042

Published online: March 14, 2019

J. Braz. Chem. Soc. 2019, 30(7), 1475-1482

When Serendipity Knocks on the Door: Synthesis and Physicochemical Characterization of 7-Chloro-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one

Christian C. Carmona-Vargas ; Javier Ellena ; Richard F. D'Vries ; Manuel N. Chaur

How to cite this article

 

7-Chloro-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one was obtained in a serendipitous way in a chlorination reaction of a thiobarbituric acid derivative.

http://dx.doi.org/10.21577/0103-5053.20190043

Published online: March 19, 2019



J. Braz. Chem. Soc. 2019, 30(7), 1483-1497

A Microwave-Enhanced Synthesis and Biological Evaluation of N-Aryl‑5,6,7,8‑tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amines

Qing Han ; Zijian Yin; Jingjiao Sui; Qingming Wang; Yaquan Sun

How to cite this article

 

A series of thieno[2,3-d]pyrimidin-4-amine derivatives were synthesized by using a microwave-enhanced conditions. Amongst these compounds, three exhibited moderate cytotoxic activities against A549, CT26 and HepG2 cell lines.

http://dx.doi.org/10.21577/0103-5053.20190044

Published online: March 19, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1498-1505

Determination of Antibiotics Residues in Milk Using a QuEChERS Method Using Full Factorial Design and Liquid Chromatography-Tandem Mass Spectrometry

Andressa H. A. Grabsk; João Raul B. de Souza; Francilaine E. De Marchi; Rodolpho M. do Prado; Geraldo T. dos Santos; Carla Porto; Eduardo J. Pilau

How to cite this article

 

Determination of ceftiofur, cloxacillin and enrofloxacin in cow milk by optimized quick, easy, cheap, effective, rugged and safe (QuEChERS) methodology.

http://dx.doi.org/10.21577/0103-5053.20190046

Published online: March 26, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1506-1514

Optimizing the Extraction of Anthocyanins from the Skin and Phenolic Compounds from the Seed of Jabuticaba Fruits (Myrciaria jaboticaba (Vell.) O. Berg) with Ternary Mixture Experimental Designs

Michelly C. Paludo; Ronan C. Colombo; José Teixeira Filho; Isidro Hermosín‑Gutiérrez; Cristiano A. Ballus; Helena T. Godoy

How to cite this article

 

Extraction protocols for phenolic compounds from the seed and total monomeric anthocyanins from the skin of "Sabará" jabuticaba (SF) were optimized with simplex lattice designs for solvent mixing. Both optimized extraction protocols proved to be fast, simple, and low cost.

http://dx.doi.org/10.21577/0103-5053.20190047

Published online: March 26, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1515-1523

Advanced Oxidation Processes to the Remediation of Liquid Residue from the Thermal Treatment of Oily Sludge

Graziela S. Costa; Christine A. Althoff; Jéssica T. Schneider; Patricio Peralta-Zamora

How to cite this article

 

The thermal treatment of the oily sludge produces three new residues. This study aims to remediate the liquid residue applying advanced oxidative processes.

http://dx.doi.org/10.21577/0103-5053.20190048

Published online: March 27, 2019

J. Braz. Chem. Soc. 2019, 30(7), 1524-1533

An Alternative and Simple Method for the Preparation of Bare Silica Nanoparticles Using Sugarcane Waste Ash, an Abundant and Despised Residue in the Brazilian Industry

Suzimara Rovani ; Jonnatan J. Santos; Paola Corio; Denise A. Fungaro

How to cite this article

 

Bare silica nanoparticles were successfully synthesized from sugarcane waste ash; the particles are smaller than 100 nm and have a surface area of 63 m2 g-1.

http://dx.doi.org/10.21577/0103-5053.20190049

Published online: March 27, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1534-1540

Solid Phase Extraction Using SiO2/Al2O3/TiO2 Ternary Oxide for Cu2+ Preconcentration

Evelyn F. Pinheiro; José Guilherme A. Rodrigues; Gláucio G. Honório; Jéssica N. da Cunha; Carlos Eduardo R. de Paula; Débora F. de Andrade; Emerson S. Ribeiro ; Eliane D'Elia

How to cite this article

 

A SiO2/Al2O3/TiO2 ternary mixed oxides was used to study in preconcentration/separation for Cu2+ determination in cachaça samples by square wave anodic stripping voltammetry.

http://dx.doi.org/10.21577/0103-5053.20190050

Published online: March 29, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1541-1547

BDD-Electrolysis of Oxalic Acid in Diluted Acidic Solutions

Tamires F. da Costa; José E. L. Santos; Djalma R. da Silva; Carlos A. Martínez‑Huitle

How to cite this article

 

The effect of supporting electrolyte concentration as well as the role of oxidants in solution play an important role in the chemical/electrochemical process at the molecular level (electron-transfer, solvation, diffusion, adsorption species) at boron-doped diamond (BDD) surface.

http://dx.doi.org/10.21577/0103-5053.20190051

Published online: March 29, 2019

J. Braz. Chem. Soc. 2019, 30(7), 1548-1557

4D-QSAR Study of 17β-Hydroxysteroid Dehydrogenase Type 3 Inhibitors

João Paulo A. Martins ; Eduardo B. de Melo

How to cite this article

 

4D-quantitative structure-activity relationships (QSAR) models obtained from conformational sampling profiles derived by molecular dynamics.

http://dx.doi.org/10.21577/0103-5053.20190052

Published online: April 1, 2019


J. Braz. Chem. Soc. 2019, 30(7), 1558-1565

Caryopristimerin, the First Example of a Sesquiterpene-Triterpene Homo Diels‑Alder Adduct, and a New 29-nor-Friedelane from Roots of Salacia crassifolia

Josana P. dos Santos; Bernardo L. Rodrigues; Willian X. C. Oliveira ; Fernando C. Silva; Grasiely F. de Sousa ; Sidney A. Vieira Filho; Lucienir P. Duarte ; Roqueline R. Silva

How to cite this article

 

Two new compounds, caryopristimerin and 2α,3α,22β-trihydroxy-21-oxo-29-nor-friedelan-24-oic acid, were isolated from Salacia crassifolia roots. This is the first report of a dimer formed with a quinonemethide-derivative and the sesquiterpene caryophyllene (caryopristimerin) linked by carbon-carbon bonds possibly via homo Diels-Alder reaction.

http://dx.doi.org/10.21577/0103-5053.20190053

Published online: April 4, 2019

Online version ISSN 1678-4790 Printed version ISSN 0103-5053
Journal of the Brazilian Chemical Society
JBCS Editorial and Publishing Office
University of Campinas - UNICAMP
13083-970 Campinas-SP, Brazil

Tel/Fax: +55.19.3521.3151
Free access

GN1