JBCS

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Open Access/APCs

 

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vol. 30, No. 12, 2019, p. 2501-2736

 

For Gender Equality in Science

"All spiritual perfection is a real benefit:
Well then, science is spiritual perfection:
So science is a real benefit. '

(Princess Isabel file, Grão Pará Archive)1

Promoting the inclusion of women and girls implies to create opportunities for intellectual growth and to fight inequalities in access to skills, health, education, protection, profession, and well-being. In this context, it is stimulating to follow the promising worldwide progress towards the implementation of the 2030 United Nations' Agenda for Sustainable Development, which includes the achievement of gender equality and empowerment of all women and girls as a goal. The commitment of world leaders to this Agenda has given rise to several cheering initiatives, although there is still a long way to go before we genuinely approach sustainable development through the necessary combination of economic growth, social inclusion, and environmental protection.

To add to these efforts and mark the 30th anniversary of its first launching in 1990, the Journal of the Brazilian Chemical Society now publishes a special volume to honor the work of distinguished Brazilian Women in Chemistry. It contains original contributions in all aspects of Chemistry within the scope of the JBCS, submitted by women research leaders who illustrate and represent the quality of the current Brazilian chemical science. Given the enthusiastic welcome given by the community to this idea, reflected in the high number of submissions received for this special volume, the original proposal to release it in just one issue has been expanded to three. As part of this successful initiative of the Brazilian Chemical Society, the Editorial Board of the JBCS thanks all authors for considering our invitation and joining us on this special anniversary celebration.

1. Filgueiras, C. A. L.; Quim. Nova, 2004, 27, 349.

(Read more at Editorial)

Special Issue Brazilian Women in Chemistry




Review J. Braz. Chem. Soc. 2019, 30(12), 2501-2535

The Research on Porphyrins and Analogues in Brazil: A Small Review Covering Catalytic and other Applications since the Beginning at Universidade de Sao Paulo in Ribeirao Preto until the Joint Venture between Brazilian Researchers and Colleagues from Universidade de Aveiro, Portugal

Shirley Nakagaki ; Kelly A. D. F. Castro; Maria da Graça P. M. S. Neves; Maria do Amparo Faustino; Yassuko Iamamoto

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The aim of this review is to provide insight into porphyrin chemistry research in Brazilian institutions, especially that involving catalytic purposes, and discuss some advances achieved in the topic with the collaboration of researchers from the Universidade de Aveiro, Portugal.

http://dx.doi.org/10.21577/0103-5053.20190153

Published online: July 4, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2536-2560

(Bio)conjugation Strategies Applied to Fluorescent Semiconductor Quantum Dots

Goreti Pereira; Camila A. P. Monteiro; Gabriela M. Albuquerque; Maria I. A. Pereira; Mariana P. Cabrera; Paulo E. Cabral Filho; Giovannia A. L. Pereira; Adriana Fontes; Beate S. Santos

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In this review we present the state of the art of (bio)conjugation strategies applied to semiconductor quantum dots for biomedical / bioanalytical purposes.

http://dx.doi.org/10.21577/0103-5053.20190163

Published online: July 16, 2019
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Articles J. Braz. Chem. Soc. 2019, 30(12), 2561-2566

A New Tetraglycosylated Flavonoid from Leaves of Platycyamus regnellii Benth. Isolated by High-Speed Countercurrent Chromatography

Carla M. Leal; Ricardo M. Borges; Rosineide C. Simas; Fernanda N. Costa; Gilda G. Leitao

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A new tetraglycosylated flavonoid was isolated from the butanol extract of leaves of Platycyamus regnellii using high-speed countercurrent chromatography (HSCCC).

http://dx.doi.org/10.21577/0103-5053.20190143

Published online: June 21, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2567-2574

Acid Hydrolysis of Regular Corn Starch under External Electric Field

Nádya P. da Silveira ; Roberta Zucatti; Andrielle D. Vailatti; Daiani C. Leite

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Acid hydrolysis of regular corn starch under external electric field greatly reduces the reaction time and increases starch crystallinity. Amylose and amylopectin are depicted in light and dark pink, respectively.

http://dx.doi.org/10.21577/0103-5053.20190168

Published online: July 23, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2575-2581

Multi-Energy Calibration: A Practical Method for Determination of Macro and Micro Nutrients in Meat by ICP OES

Julymar M. Higuera ; Ana Beatriz S. Silva ; Ana Rita A. Nogueira

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Multi-energy calibration (MEC) was successfully employed to nutrients determination in beef and meats of sheep and chicken by inductively coupled plasma optical spectrometry (ICP OES).

http://dx.doi.org/10.21577/0103-5053.20190171

Published online: July 23, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2582-2589

Feasibility of a New Method for Identification and Discrimination of Gunshot Residues by Total Reflection X-Ray Fluorescence and Principal Component Analysis

Luisa P. Ferreira; Clésia C. Nascentes ; Frederico N. Valladao; Rogério A. Lordeiro

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A simple and innovative method to identify gunshot residues and discriminate ammunition of six different calibers employing total reflection X-ray fluorescence (TXRF) and chemometric tools.

http://dx.doi.org/10.21577/0103-5053.20190173

Published online: July 25, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2590-2598

Synthesis of Hybrid Monolithic Columns Using a Click Chemistry Reaction for Application in Capillary Liquid Chromatography

Marcella E. P. Schmidt; Carla B. G. Bottoli

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Synthesis of a hybrid monolith using a thiol-ene click chemistry reaction, for use in capillary liquid chromatography.

http://dx.doi.org/10.21577/0103-5053.20190174

Published online: July 26, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2599-2609

Nanostructured Systems Obtention Using LbL Self-Assembly or the Cysteine-Assisted Adsorption Method and Their Application as a Water Splitting Single Catalyst

Rhauane A. Galvao ; Paloma B. Barreto; Thiago A. S. Soares ; Letícia B. V. Sales; Jeice M. dos Santos; Larissa A. de Santa-Cruz; Tassia S. Seeger ; Fabio A. Duarte ; Germana M. M. Silva; Giovanna Machado

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Titanium dioxide nanotubes were obtained through anodization, and its surface was modified through layer-by-layer (LbL) self-assembly or cysteine adsorption to attach gold ions, which were reduced in Au(0) to be used as photocatalysts for hydrogen production.

http://dx.doi.org/10.21577/0103-5053.20190176

Published online: July 30, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2610-2623

Kaolinite/TiO2/cobalt(II) Tetracarboxymetallophthalocyanine Nanocomposites as Heterogeneous Photocatalysts for Decomposition of Organic Pollutants Trimethoprim, Caffeine and Prometryn

Tiago H. da Silva; Anderson O. Ribeiro; Eduardo J. Nassar ; Raquel Trujillano; Vicente Rives; Miguel A. Vicente; Emerson H. de Faria; Katia J. Ciuffi

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Nanocomposites kaolinite/TiO2/phthalocyanine and molecular structures of organic pollutants used in photodegradation studies.

http://dx.doi.org/10.21577/0103-5053.20190178

Published online: July 31, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2624-2633

Interplay between Near-Field Properties and Au Nanorod Cluster Structure: Extending Hot Spots for Surface-Enhanced Raman Scattering

Klester S. Souza; Erico Teixeira-Neto; Marcia L. A. Temperini; Diego P. dos Santos

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Correlation between surface-enhanced Raman scattering (SERS) spectrum and gold nanorod cluster structure; end-to-end with side-by-side interactions may lead to strong enhancements.

http://dx.doi.org/10.21577/0103-5053.20190179

Published online: July 31, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2634-2641

Cardol-Derived Organophosphorothioates as Inhibitors of Acetylcholinesterase for Dengue Vector Control

Mayara O. Almeida; Thayllan T. Bezerra; Nayane M. A. Lima; Anderson F. Sousa; Maria T. S. Trevisan; Viviane G. P. Ribeiro; Diego Lomonaco ; Selma E. Mazzetto

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Larvicidal action of organophosphorothioates derived from cardol through inhibition of the acetylcholinesterase enzyme.

http://dx.doi.org/10.21577/0103-5053.20190181

Published online: August 6, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2642-2648

Photochemical Synthesis of Ag and Au Nanoparticles Using a Thioxanthone Substituted Chitosan as Simultaneous Photoinitiator and Stabilizer

Silvano R. Valandro; Alessandra L. Poli; Miguel G. Neumann; Carla C. Schmitt

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Silver and gold nanoparticles were formed by irradiating the metal salt in the presence of a thioxanthone-derivated chitosan that acts as photoinitiator and stabilizer.

http://dx.doi.org/10.21577/0103-5053.20190182

Published online: August 6, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2649-2659

Light Response of Three Water-Soluble MnI PhotoCORMs: Spectroscopic Features and CO Release Investigation

Vitor C. Weiss; André L. Amorim; Fernando R. Xavier; Adailton J. Bortoluzzi; Ademir Neves; Rosely A. Peralta

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Water-soluble MnI compounds release CO when exposed to light. The proposed mechanism occurs in two steps, with photo and redox processes.

http://dx.doi.org/10.21577/0103-5053.20190183


J. Braz. Chem. Soc. 2019, 30(12), 2660-2671

Silica/Titania Graphite Composite Modified with Chitosan and Tyrosinase Employed as a Sensitive Biosensor for Phenolic Compounds

Marina T. Laranjo; Franciele M. Morawski; Silvio L. P. Dias; Edilson V. Benvenutti; Leliz T. Arenas; Tania M. H. Costa

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Biosensor based on new carbon ceramic electrode prepared with silica-titania/graphite composite and modified with chitosan for tyrosinase immobilization.

http://dx.doi.org/10.21577/0103-5053.20190190

Published online: August 12, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2672-2680

Structure and Absolute Configuration of Secondary Metabolites from Two Strains of Streptomyces chartreusis Associated with Attine Ants

Humberto E. Ortega ; Joao M. Batista Jr. ; Weilan G. P. Melo ; Gabriela T. de Paula; Mônica T. Pupo

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Natural products produced by Streptomyces chartreusis strains associated to Brazilian fungus-growing ants. Absolute configurations of strepchazolin A (3) and strepchazolin B (4) were determined by vibrational circular dichroism (VCD) and ecological function of cyclooctasulfur (5) was established.

http://dx.doi.org/10.21577/0103-5053.20190194

Published online: August 15, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2681-2690

Nanoparticles of Fe2O3 and Co3O4 as Efficient Electrocatalysts for Oxygen Reduction Reaction in Acid Medium

Ismael C. B. Alves; José R. N. Santos; Deracilde S. S. Viégas; Edmar P. Marques; Cristina A. Lacerda; Lei Zhang; Jiujun Zhang; Aldaléa L. B. Marques

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Oxygen reduction reaction (ORR) catalyzed by nanoparticles of Fe2O3 and Co3O4 applied on the surface of a glassy carbon electrode (GCE).

http://dx.doi.org/10.21577/0103-5053.20190195

Published online: August 19, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2691-2701

Analysis of the Seasonal Variation in Chemical Profile of Piper glabratum Kunth Essential Oils using GCxGC/qMS and Their Antioxidant and Antifungal Activities

Anaí L. dos Santos; Allan S. Polidoro; Cláudia A. L. Cardoso; Jonas S. Mota; Rosângela A. Jacques; Elina B. Caramao

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The influence of seasonality on chemical composition, antioxidant and antifungal activities of Piper glabratum essential oils was evaluated. The two-dimensional gas chromatography coupled with quadrupole mass spectrometry (GCxGC/qMS) allowed the detailed chemical characterization and the oils showed biological activities. Composition and activities were influenced by seasonality.

http://dx.doi.org/10.21577/0103-5053.20190196

Published online: August 20, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2702-2711

Transmissive to Dark Electrochromic and Fluorescent Device Based on Poly(fluorene-bisthiophene) Derivative

Fred A. R. Nogueira; Ana Julia C. da Silva; Johnnatan D. de Freitas; Amanda S. Tintino; Anna Paula L. A. Santos; Italo N. Oliveira; Adriana S. Ribeiro

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Electrochromic and fluorescent device based on poly(fluorene-bisthiophene) derivative.

http://dx.doi.org/10.21577/0103-5053.20190202

Published online: August 26, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2712-2720

High Throughput Mass Spectrometry Platform for Prospecting High Value Chemicals from Bioconversion of Glycerin

Diana R. Amazonas ; Augusto L. Souto; Flávia S. Vieira; Andréia A. J. Carneiro; Rebeca B. Vianna; Thaís D. Mendes; Karen S. Lima; José A. A. Ribeiro; Mônica C. T. Damaso; Clenilson M. Rodrigues; Patrícia V. Abdelnur

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High throughput mass spectrometry platform for prospecting high value chemicals from bioconversion of glycerin by filamentous fungi.

http://dx.doi.org/10.21577/0103-5053.20190210

Published online: September 2, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2721-2730

Bioaccessibility of Zinc from Yogurt and Determination of Total Concentration Using Slurry Sampling and Flame Atomic Absorption Spectrometry

Camila K. de Andrade ; Jucimara K. de Andrade; Vanessa E. dos Anjos ; Sueli P. Quináia

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The bioaccessibility of Zn was determined from yogurt by flame atomic absorption spectrometry (FAAS). Slurry sampling procedure, in total Zn determination in yogurt by FAAS, was used.

http://dx.doi.org/10.21577/0103-5053.20190213

Published online: September 3, 2019
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J. Braz. Chem. Soc. 2019, 30(12), 2731-2736

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