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Open Access/APCs

Forthcoming Papers Brazilian Women in Chemistry

Articles published online ahead of print

Articles J. Braz. Chem. Soc. 2019

Halogen Determination in Polymeric Waste of Electrical and Electronic Equipment: Overcoming Limitations in Sample Preparation

Jussiane S. Silva; Gabrielle D. Iop; Rodrigo M. Pereira ; Marcia F. Mesko ; Lisarb O. Diehl; Erico M. M. Flores; Paola A. Mello

A critical evaluation of digestion methods for polymeric parts of waste of electrical and electronic equipment was carried out for further determination of halogens.


Published online: June 13, 2019.

J. Braz. Chem. Soc. 2019

SBSE(EG-Silicone)-UFLC-MS/MS and HPLC-Flu Analysis of Norharman in Passiflora edulis Rinds

Vítor F. Freire ; Renata Colombo; Janete H. Yariwake

Norharman was identified and quantified in Passiflora edulis rinds by ultra-fast liquid chromatography coupled to tandem mass spectrometry (UFLC-MS/MS) and a stir bar sorptive extraction with a copolymer of polydimethylsiloxane and polyethylene glycol as stationary phase and high performance liquid chromatography with fluorescence detection (SBSE(EG-Silicone)-HPLC-Flu) method.


Published online: June 12, 2019.

J. Braz. Chem. Soc. 2019

Modification of Chitosan by Zincke Reaction: Synthesis of a Novel Polycationic Chitosan-Pyridinium Derivative

Fernanda J. Gonçalves; Rossimiriam P. Freitas

Chitosan was modified by converting its amino group at C-2 into a pyridinium ring, for the first time, via Zincke reaction.


Published online: June 11, 2019.

J. Braz. Chem. Soc. 2019

On-Flow Ligand Screening Assay Based on Immobilized Nucleoside Diphosphate Kinase B from Homo sapiens

Juliana M. Lima; Claudia Seidl; Elise M. F. Cunha; Arthur H. C. Oliveira; Carmen L. Cardoso

Two-dimensional on-flow zonal affinity-based chromatography assay for nucleoside diphosphate kinase B.


Published online: June 7, 2019.

J. Braz. Chem. Soc. 2019

Antimicrobial Effects of Silver(I) and Bismuth(III) Complexes with Secnidazole‑Derived Schiff Base Ligands: the Role of the Nitro Group Reduction

Ana P. A. Oliveira; João F. G. Ferreira; Luiz M. Farias; Paula P. Magalhães; Leticia R. Teixeira; Heloisa Beraldo

Silver(I) and bismuth(III) complexes with secnidazole-derived ligands show anti anaerobic bacteria activity. Silver(I) complexes exhibit antifungal effects.


Published online: June 6, 2019.

J. Braz. Chem. Soc. 2019

Comparison of Volatile Profile and Antioxidant Activity of Piper divaricatum G. Meyer (Piperaceae) Using Cuttings and Cell Tissue

Rosana Corpes; Lidiene Monteiro; Eloísa H. Andrade; José G. Maia; Ilmarina Menezes; William N. Setzer; Alessandra R. Ramos; Joyce K. R. da Silva

Piper divaricatum plants propagated by cuttings and cell tissue had the same volatile profile, phenolic content and similar antioxidant activity.


Published online: June 6, 2019.

J. Braz. Chem. Soc. 2019

Physicochemical Study of the Interaction between Gold Nanoparticles and Lipase from Candida sp. (CALB): Insights into the Nano-Bio Interface

Heloise R. de Barros; Mary C. Santos; Leandro R. S. Barbosa; Leandro Piovan; Izabel C. Riegel-Vidotti

The interaction between lipase from Candida sp. and gold nanoparticles was fully investigated at different length scales revealing important information about the nano-bio interface of this bio-conjugate, as seen by transmission electron microscopy (TEM) images.


Published online: June 6, 2019.

J. Braz. Chem. Soc. 2019

Compatibility of GROMOS-Derived Atomic Parameters for Lipopolysaccharide Membranes with the SPC/E Water Model and Alternative Long-Range Electrostatic Treatments Using Single Nonbonded Cutoff and Atom-Based Charge Schemes

Manoela P. M. Lima; Manuela Nader; Denys E. S. Santos; Thereza A. Soares

The effect of water models, long-range electrostatics treatment and charge cutoff schemes on atomistic molecular dynamics (MD) simulations of bacterial outer membranes with the GROMOS force field.


Published online: May 29, 2019.

Review J. Braz. Chem. Soc. 2019

Raman Imaging Spectroscopy: History, Fundamentals and Current Scenario of the Technique

Hery Mitsutake; Ronei J. Poppi; Márcia C. Breitkreitz

Representation of a Raman imaging experiment: the spectral array of data and the univariate/multivariate data treatment for the generation of chemical images.


Published online: May 24, 2019.

Articles J. Braz. Chem. Soc. 2019

Facile One-Step Electrodeposition Fabrication of Amorphous MoS2 Catalysts in Titanium for Hydrogen Evolution Reaction

Marina Medina ; Patricia G. Corradini ; Lucia H. Mascaro

For Ti substrate the electron transfer rate is very fast, which should be responsible for the high activity of the catalyst. Hydrogen evolution reaction is more favorable on Ti/MoS2 than fluorine-tin doped oxide (FTO)/MoS2 decreasing the overpotential and Tafel slope.


Published online: May 24, 2019.

J. Braz. Chem. Soc. 2019

Thermal Stability and Kinetic of Decomposition of Mono- and Dicationic Imidazolium-Based Ionic Liquids

Caroline R. Bender; Bruna L. Kuhn; Carla A. A. Farias; Francieli I. Ziembowicz; Thaíssa S. Beck; Clarissa P. Frizzo

Phase transitions, thermal stability, kinetics, and activation parameters of degradation of imidazolium-based ionic liquids were evaluated.


Published online: May 24, 2019.

J. Braz. Chem. Soc. 2019

Chlorine and Fluorine Determination in Eye-Pencil: Development of an Eco‑Friendly Sample Preparation Method for Ion Chromatography Analysis

Marcia F. Mesko ; Vanize C. Costa; Rodrigo M. Pereira ; Carla A. Hartwig

An eco-friendly method was developed for chlorine and fluorine determination in eye-pencil, combining microwave-induced combustion (MIC) for sample preparation with ion chromatography (IC) for the element determination.


Published online: May 24, 2019.

J. Braz. Chem. Soc. 2019

Catalytic Transformation Conditions of Ethanol on Dealuminated BEA Zeolites

Maria Clara H. Clemente; Deborah S. Valadares; André B. Lacava; Lais S. Barbosa; Gesley A. V. Martins; José A. Dias;
Sílvia C. L. Dias

The image is a representation of porous of BEA zeolite after reaction with ammonium hexafluorosilicate (AHFS), showing the formation of bigger extra-framework aluminum (EFAL) species without washing, and the respective washing procedure, as well as product selectivity depending on weight hourly space velocity (WHSV).


Published online: May 23, 2019.

J. Braz. Chem. Soc. 2019

Degradation of Acid Red 8 Dye Using Photo-Fenton Reaction Mediated by Titanium Modified Catalysts

André C. Bento; Elissandro S. Emídio; Peter Hammer; Raquel F. P. Nogueira

Dye degradation mediated by titanium free catalyst occurs mostly in homogeneous phase while with molar ratio Ti/Fe = 0.4 heterogeneous process is predominant at pH 5.6.


Published online: May 21, 2019.

J. Braz. Chem. Soc. 2019

Gold Catalysis for Selective Hydrogenation of Aldehydes and Valorization of Bio‑Based Chemical Building Blocks

Rerison J. M. Silva; Jhonatan L. Fiorio; Pedro Vidinha; Liane M. Rossi

Gold catalysts activated by Lewis bases are highly selective for the hydrogenation of bio-derived aldehydes into alcohols, such as 2,5-dihydroxymethylfuran (DHMF).


Published online: May 21, 2019.

J. Braz. Chem. Soc. 2019

Linear Peptide Analogues from Jatropha's Orbitides Promote Migration of Human Neonatal Foreskin Fibroblasts in vitro and Collagen Deposition

Suelem D. Ramalho ; Meri Emili F. Pinto ; Renata K. Andricopulo; Paulo R. S. Sanches; Edilberto R. Silveira ; Eduardo M. Cilli; Adriano D. Andricopulo; Vanderlan S. Bolzani

Linear pohlianin B and linear ribifolin are peptide analogues originally designed from natural orbitides. The promising results demonstrated that they have the potential to induce neonatal human foreskin fibroblast migration and collagen deposition.


Published online: May 21, 2019.

Articles J. Braz. Chem. Soc. 2019

Oxone®-Promoted One-Pot Synthesis of 1-Aryl-4-(organylselanyl)-1H-pyrazoles

Raquel G. Jacob ; Daniela H. de Oliveira; Thiago J. Peglow; José E. R. Nascimento; Ricardo H. Bartz

The one-pot synthesis of 4-organylselanylpyrazoles from 1,3-diketones, hydrazines and diaryl diselenides using Oxone® was developed.


Published online: May 15, 2019.

J. Braz. Chem. Soc. 2019

Determination of Amino Acids in Plasma Samples of Preeclampsia Patients by Liquid Chromatography Coupled to High-Resolution Mass Spectrometry

Eliane do Nascimento; Helvécio C. Menezes; Rodrigo R. Resende; Vânia A. M. Goulart; Zenilda L. Cardeal

The analysis of plasma samples from pregnant women with preeclampsia and healthy pregnancies by liquid chromatography coupled to high-resolution mass spectrometry shows that there are significant differences between samples in the levels of some free amino acids.


Published online: May 14, 2019.

J. Braz. Chem. Soc. 2019

Tianeptine Esters Derivatives: A Study of Protein-Drug Interaction Performed by Fluorescence Quenching and Molecular Docking

Franciela A. Soares; Marco A. Ceschi; Daniel B. Franceschini; Vanessa P. do Canto; Paulo A. Netz; Leandra F. Campo

The antidepressant tianeptine and its esters induce the fluorescence quenching of BSA due to the proximity to Trp134 and Trp213 amino acids as revealed by molecular modeling.


Published online: May 14, 2019.

J. Braz. Chem. Soc. 2019

Are Imidazoles Versatile or Promiscuous in Reactions With Organophosphates? Insights From the Case of Parathion

Valmir B. Silva; Elisa S. Orth

Imidazole reacts differently with various organophosphates, including an unusual N-alkylation. This promiscuity boosts the versatility of imidazoles.


Published online: May 8, 2019.

Review J. Braz. Chem. Soc. 2019

Aspergillus niger: A Hundred Years of Contribution to the Natural Products Chemistry

Mary Anne S. Lima ; Maria da Conceição F. de Oliveira; Antônia T. Á. Pimenta; Paula K. S. Uchôa

This review celebrates the centenary of chemical investigations on Aspergillus niger. Structurally diverse secondary metabolites produced by this fungus, besides its potential on selective biotransformation of terpenes, are presented.


Published online: May 7, 2019.

Articles J. Braz. Chem. Soc. 2019

Direct Assay to Evaluate Phosphoenolpyruvate Carboxykinase Activity

Bruno S. do Amaral; Katia Celina S. Correa; Arlene G. Corrêa; Dulce H. F. de Souza; Quezia B. Cass

A typical direct assay for phosphoenolpyruvate carboxykinase by liquid chromatography-tandem mass spectrometry (LC-MS/MS) with phosphoenolpyruvate detection.


Published online: May 3, 2019.

Review J. Braz. Chem. Soc. 2019

Magneto-Responsive Hydrogels: Preparation, Characterization, Biotechnological and Environmental Applications

Emilli C. G. Frachini ; Denise F. S. Petri

Magneto-responsive hydrogels are important platforms for biomedical applications, such as drug delivery, tissue engineering and cancer therapy, and for environmental applications.


Published online: April 26, 2019.

Articles J. Braz. Chem. Soc. 2019

Iridium-Based Catalysts for the Ethanol Electrooxidation in Acidic Media

Fabiano R. P. da Silva; Luiz C. Silva-Junior; Giuseppe A. Camara; Martha Janete Giz

IrRh surfaces are selective to CO2 production (from ethanol), while IrRhSn promotes the occurrence of a dual oxidation pathway that also generates acetic acid.


Published online: April 25, 2019.

J. Braz. Chem. Soc. 2019

Integrated Chemometric Approach to Optimize Sample Preparation for Detecting Metabolic Changes Provoked by Abiotic Stress in Coffea arabica L. Leaf Fingerprints

Gustavo G. Marcheafave; Cláudia D. Tormena ; Sabrina Afonso; Miroslava Rakocevic; Roy E. Bruns; Ieda S. Scarminio

Fingerprinting provides an indication of the changes in regulatory metabolites in leaves provoked by water-deficit stress by means of an integrated chemometric approach. Fermentation, nutritional deficiencies, senescence and abscission were prevalent in unirrigated plants.


Published online: April 23, 2019.

J. Braz. Chem. Soc. 2019

Electrode Modified with the Ionic Liquid [P6,6,6,14+]2[MnCl42–] for the Determination of Bisphenol A in Plastic Samples

Tânia Regina Silva; Josias Merib; Daniel A. Spudeit; Eduardo Carasek ; Iolanda C. Vieira

Simple and fast electrode for determination of bisphenol A in plastic samples using a carbon paste electrode modified with ionic liquid.


Published online: April 18, 2019.

J. Braz. Chem. Soc. 2019

Gold Nanoparticles and [PEDOT-Poly(D,L-Lactic Acid)] Composite: Synthesis, Characterization and Application to H2O2 Sensing

Aruã C. da Silva; Marco A. O. S. Minadeo; Susana I. C. de Torresi

Synthesis of Au nanoparticles with poly(3,4-ethylenedioxythiophene)-poly(D,L-lactic acid) (PEDOT-PDLLA) composite was demonstrated, easily immobilizing films with conductive and biocompatible properties used as biointerface.


Published online: April 15, 2019.

Review J. Braz. Chem. Soc. 2019

DNA Damage by Endogenous and Exogenous Aldehydes

Marisa H. G. Medeiros

Formation and biological effects of deoxyribonucleic acid (DNA) adducts from endogenous and exogenous aldehydes.


Published online: April 9, 2019.

Articles J. Braz. Chem. Soc. 2019

A New Cytotoxic Naphthoquinone and Other Chemical Constituents of Sinningia reitzii

Adson S. Silva; Magali S. Amorim; Mariana M. Fonseca; Marcos J. Salvador; Eduardo L. de Sá; Maria Élida A. Stefanello

Three new naphthoquinones, including one with cytotoxic activity, were isolated from the tubers of Sinningia reitzii.


Published online: April 4, 2019.

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