JBCS

13:39, Thu Mar 30

Open Access/APCs

Forthcoming Papers - 2017

Articles published online ahead of print




Short Report J. Braz. Chem. Soc. 2017

Phenylethylpyranone and Aristolochic Acid Derivatives from Aristolochia urupaensis

Juliana C. Holzbach; Isabele R. Nascimento; Lucia M. X. Lopes

A new pyranone and three new aristolochic acid derivatives were isolated from Aristolochia urupaensis stems together with 31 known compounds.

http://dx.doi.org/10.21577/0103-5053.20170059

Published online: March 27, 2017.


Communication J. Braz. Chem. Soc. 2017

Brønsted Acid-Catalyzed Dipeptides Functionalization through Azlactones

Igor F. dos Santos; Pedro P. de Castro; Angelina M. de Almeida; Giovanni W. Amarante

The work reports the functionalization of peptide derivatives achieved through carbodiimide mediated intramolecular cyclization and an organocatalytic azlactone ring opening reactions.

http://dx.doi.org/10.21577/0103-5053.20170058

Published online: March 27, 2017.


Articles J. Braz. Chem. Soc. 2017

A Potential Visible-Light NO Releaser: Synthesis, Reactivity and Vasodilator Properties

Aurideia P. de Sousa; André F. Fernandes; Iury A. Paz; Nilberto R. F. Nascimento; Javier Ellena; Eduardo H. S. Sousa; Luiz G. F Lopes; Alda K. M. Holanda

A new ruthenium nitrosyl complex containing benzoylpyridine ligand showed promising visible light induced release of NO and vasodilation activity.

http://dx.doi.org/10.21577/0103-5053.20170057

Published online: March 27, 2017.


J. Braz. Chem. Soc. 2017

Strategies for the Efficient Synthesis of Biheterocyclic 5-[2-(Trifluoromethylheteroaryl)-ethyl]-1,3,4-oxadiazoles from Levulinic Acid

Juliana L. Malavolta; Leandro M. Frigo; Sidnei Moura; Darlene C. Flores; Alex F. C. Flores

New ethylene-spaced biheterocyclic 5-[2-(trifluoromethyl heteroaryl)-ethyl]-1,3,4-oxadiazoles were synthesized by two consecutive cyclocondensations from methyl 7,7,7-trifluoro-4-methoxy-6-oxo-4-heptenote derived from the renewable levulinic acid.

http://dx.doi.org/10.21577/0103-5053.20170056

Published online: March 24, 2017.


J. Braz. Chem. Soc. 2017

Lipophilicity Study of 1-(Benzofuran-2-yl)ethan-1-one Oxime and its Substituted O-Benzyl Ethers

Tomasz Kosmalski; Renata Studzińska; Małgorzata Redka; Robert Pluskota; Bożena Modzelewska-Banachiewicz

Lipophilicity parameters for 1-(benzofuran-2-yl)ethan-1-one oxime and its nine biological active ethers were evaluated using reversed phase high performance liquid chromatography (RP-HPLC) method. The log kw lipophilicity parameters were compared with computed log P values using methanol, 2-propanol and acetonitrile as organic modifier of the mobile phases.

http://dx.doi.org/10.21577/0103-5053.20170055

Published online: March 24, 2017.

J. Braz. Chem. Soc. 2017

An Environmental Friendly Flow-Injection Procedure for On Line Extraction and Spectrophotometric Determination of Gossypol in Cottonseed Meal

Bianca Daminato; Marcos Y. Kamogawa; Wanessa R. Melchert

A fast, simple, inexpensive and green flow analysis procedure for the determination of gossypol in cottonseed meal.

http://dx.doi.org/10.21577/0103-5053.20170054

Published online: March 24, 2017.

J. Braz. Chem. Soc. 2017

Antifungal Properties of High Efficient W/WO3 Electrodes Acting under UV-Vis and Visible Light and Chloride Medium

Barbara C. A. Souza; Thais T. Guaraldo; Michelle F. Brugnera; Regina H. Pires; Maria J. S. M. Giannini; Maria V. B. Zanoni

Fast inactivation of C. parapsilosis by photoelectrocatalysis. The attack of HO∙ radicals to the cell wall of the fungus promotes rapid death and high degradation of organic compounds from the cell lyse. Photoelectrocatalysis is an efficient alternative to threat wastewater with high chloride content containing fungus.

http://dx.doi.org/10.21577/0103-5053.20170053

Published online: March 21, 2017.

J. Braz. Chem. Soc. 2017

Structural Invariance of a ZnII Coordination Polymer with 5-Aminoisophthalic Acid under Different Synthetic Conditions

Iara M. L. Rosa; Ana C. Z. dos Santos; Luana A. R. Giusto; Carlos B. Pinheiro; Antonio C. Doriguetto

Synthesis of coordination polymer [Zn(aip)(DMSO)] (aip: 5-aminoisophthalate and DMSO: dimethylsulfoxide) using several synthetic conditions, which show the high stability and structural invariance of the network.

http://dx.doi.org/10.21577/0103-5053.20170052

Published online: March 21, 2017.


J. Braz. Chem. Soc. 2017

Cellulose Oxidation and the Use of Carboxyl Cellulose Metal Complexes in Heterogeneous Catalytic Systems to Promote Suzuki-Miyaura Coupling and C−O Bond Formation Reaction

Guilherme B. C. Martins; Marcelo R. dos Santos; Marcus V. R. Rodrigues; Renata R. Sucupira; Luisa Meneghetti; Adriano L. Monteiro; Paulo A. Z. Suarez

Application of metal-modified cellulose as ligand in heterogeneous catalytic systems of coupling reactions as a new option for green and sustainable chemistry.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20170051

Published online: March 14, 2017.

J. Braz. Chem. Soc. 2017

Synthesis, Anti-Diabetic and Renoprotective Activity of Some New Benzazole, Thiazolidin-4-one and Azetidin-2-one Derivatives

Ahmed Abdou O. Abeed; Mohamed Salah K. Youssef; Rehab Hegazy

A new series of heterocycles were synthesized. Some of these compounds were evaluated for their anti-hyperglycemic and renoprotective activity.

http://dx.doi.org/10.21577/0103-5053.20170050

Published online: March 14, 2017.


Review J. Braz. Chem. Soc. 2017

The Chemistry of the Sesquiterpene Alkaloids

Timothy J. Brocksom; Kleber T. de Oliveira; André L. Desiderá

This review presents the structures, biological activities, biosynthesis, and syntheses of the sesquiterpene alkaloids, principally the dendrobine and guaipyridine groups.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20170049

Published online: March 14, 2017.

Articles J. Braz. Chem. Soc. 2017

DLLME-GC/ECD Method for the Residual Analysis of Parathion-Methyl and its Application in the Study of the UV-Photodegradation Process

Gustavo G. Pimenta; Maria E. L. R. de Queiroz; Raquel P. D. Victor; Luiz M. Noronha; Antônio A. Neves; André F. de Oliveira; Fernanda F. Heleno

A DLLME-GC/ECD was optimized and validated to analyze the parathion-methyl in water and evaluate its UV-photodegradation.

http://dx.doi.org/10.21577/0103-5053.20170048

Published online: March 14, 2017.


J. Braz. Chem. Soc. 2017

An Automated Multicommuted Flow Analysis Procedure for Photometric Determination of Reducing Sugars in Wine Employing a Directly Heated Flow‑Batch Device

Marcos A. S. Brasil; Boaventura F. Reis

Diagram of the setup for reducing sugar determination in wines.

http://dx.doi.org/10.21577/0103-5053.20170047

Published online: March 10, 2017.

J. Braz. Chem. Soc. 2017

Composite Superabsorbent Hydrogel of Acrylic Copolymer and Eggshell: Effect of Biofiller Addition

Marcos Vinícius A. Queirós; Maslândia N. Bezerra; Judith P. A. Feitosa

The addition of eggshell to an acrylic copolymer improves the gel strength and the water absorption and also provides a more useful destination for the residue.

http://dx.doi.org/10.21577/0103-5053.20170046

Published online: March 9, 2017.

Review J. Braz. Chem. Soc. 2017

Silver and Silver Chloride Nanoparticles and their Anti-Tick Activity: a Mini Review

Nelson Durán; Marcela Durán; Celso E. de Souza

Silver nanoparticles can act against ticks or against major pathogens transmitted by the bite of ticks such as bacteria, viruses or protozoa with equal or better efficacy of antibiotics, antiviral or antiparasitic agents.

http://dx.doi.org/10.21577/0103-5053.20170045

Published online: March 9, 2017.

Articles J. Braz. Chem. Soc. 2017

Synthesis of TiO2/SiO2-B2O3 Ternary Nanocomposites: Influence of Interfacial Properties on their Photocatalytic Activities with High Resolution Mass Spectrometry Monitoring

Susana F. Resende; Rafael L. Gouveia; Bernardo S. Oliveira; Wander L. Vasconcelos; Rodinei Augusti

Summary of the process used to synthesize the TiO2/SiO2-B2O3 ternary nanocomposites.

http://dx.doi.org/10.21577/0103-5053.20170044

Published online: March 6, 2017.


J. Braz. Chem. Soc. 2017

Boron Isotopic Ratio in Brazilian Red Wines: a Potential Tool for Origin and Quality Studies?

Cibele M. S. de Almeida; Ana Cristina Almeida; Tatiana D. Saint'Pierre; José Marcus Godoy

Boron isotopic composition was applied as a tool to differentiate among Brazilian red wine origin. The results have demonstrated that is possible to discriminate between wines produced on the Southern region from those produced on São Francisco Valley and also between the Brazilian red wines from Chilean, Italian and Portuguese wines.

http://dx.doi.org/10.21577/0103-5053.20170043

Published online: March 6, 2017.


J. Braz. Chem. Soc. 2017

Using Magnetized (Fe3O4 / Biochar Nanocomposites) and Activated Biochar as Adsorbents to Remove Two Neuro-Active Pesticides from Waters

Tassya T. S. Matos; Juliana Schultz; Muhammad Y. Khan; Everton F. Zanoelo; Antônio S. Mangrich; Bruno R. Araújo; Sandro Navickiene; Luciane P. C. Romão

Biochars prepared from exhausted husk (EH) and tannin (TAN) derived from black wattle were used to remove thiacloprid (TCL) and thiamethoxam (TMX) agrotoxics from spiked sample of the Marcela Dam, a natural reservoir in Itabaiana Municipality, Sergipe State, Brazil.

http://dx.doi.org/10.21577/0103-5053.20170042

Published online: March 3, 2017.

J. Braz. Chem. Soc. 2017

Application of Full Factorial Design to Evaluate the Effect of Different Variables on the Stability of Biodiesel:Diesel Blends under Storage Conditions

Michelle J. C. Rezende; Daniella L. Vale; Paula F. Aguiar; Carlos A. S. Riehl; Debora A. Azevedo

The stability of biodiesel:diesel blends were studied in actual Brazilian storage conditions. The degradation was quantified by target compounds in the oxidation process and a full factorial design evaluated the effect of variables.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20170041

Published online: February 24, 2017.

J. Braz. Chem. Soc. 2017

Determination of Rare Earth Elements in Some Flower Herb Teas and their Infusions

Zhanglin Ni; Chuanyi Ren; Junyong Cheng; Fubin Tang

The sixteen rare earth elements content in twelve types of popular flower herb teas and their infusions consumed in China was evaluated by ICP-MS.

http://dx.doi.org/10.21577/0103-5053.20170039

Published online: February 23, 2017.

J. Braz. Chem. Soc. 2017

New Design of Mini PTFE Vessels for Sample Preparation in Micro Scale: Determination of Cd, K, Mg and Na in Biological Sample

Camila M. Oliz; Alexander O. Souza; Camila C. Pereira; Richard M. Oliveira; Aline L. Medina; Mariana A. Vieira; Anderson S. Ribeiro; Adriane M. Nunes

The new mini PTFE vessel was evaluated as a potential system for the preparation of biological samples and subsequent determination of metals.

http://dx.doi.org/10.21577/0103-5053.20170037

Published online: February 22, 2017.

J. Braz. Chem. Soc. 2017

A Novel Nanofibrous Film Chemosensor for Highly Selective and Sensitive Optical Signaling of Zn2+

Chen Zhou; Heng Liu

Recognition mechanism of the nanofibrous film chemosensor for Zn2+.

http://dx.doi.org/10.21577/0103-5053.20170036

Published online: February 20, 2017.


Short Report J. Braz. Chem. Soc. 2017

Synthesis of Diiodo-Functionalized Benzo[b]furans via Electrophilic Iodocyclization

Carlise Frota; Allan F. C. Rossini; Gleison A. Casagrande; Lucas Pizzuti; Cristiano Raminelli

Diiodo-functionalized benzo[b]furans were achieved through a simple electrophilic iodocyclization reaction involving alkynylated
2-iodoanisoles and molecular iodine in the presence of sodium bicarbonate.

http://dx.doi.org/10.21577/0103-5053.20170035

Published online: February 20, 2017.


Articles J. Braz. Chem. Soc. 2017

Effects of Iron Enrichment of Adzuki Bean (Vigna angularis) Sprouts on Elemental Translocation, Concentrations of Proteins, Distribution of Fe-Metalloproteins, and Fe Bioaccessibility

Aline P. de Oliveira; Juliana Naozuka

Enrichment effects with different iron species on translocation of this element, chemical composition (essential elements, proteins and Fe-proteins) and Fe bioaccessibility.

http://dx.doi.org/10.21577/0103-5053.20170034

Published online: February 17, 2017.

Short Report J. Braz. Chem. Soc. 2017

Synthesis, Inhibition of Mycobacterium tuberculosis Enoyl-acyl Carrier Protein Reductase and Antimycobacterial Activity of Novel Pentacyanoferrate(II)‑isonicotinoylhydrazones

Thais P. Gazzi; Mariane Rotta; Anne D. Villela; Valnês Rodrigues-Junior; Leonardo K. B. Martinelli; Francisco Adilson M. Sales; Eduardo Henrique Silva de Sousa; Maria Martha Campos; Luiz Augusto Basso; Diógenes S. Santos; Pablo Machado

The pentacyanoferrate(II)-isonicotinoylhydrazones inhibited the reaction catalyzed by Mycobacterium tuberculosis 2-trans-enoyl-ACP(CoA) reductase (MtInhA), showed antitubercular activity against M. tuberculosis H37Rv strain with no apparent toxicity to mammalian cells and presented intracellular activity in a macrophage model of infection.

http://dx.doi.org/10.21577/0103-5053.20170033

Published online: February 17, 2017.


Articles J. Braz. Chem. Soc. 2017

Synthesis of New Xanthenes Based on Lawsone and Coumarin via a Tandem Three‑Component Reaction

Mariana F. C. Cardoso; Luana S. M. Forezi; Victor G. S. Cavalcante; Cecília S. R. Juliani; Jackson Antônio L. C. Resende; David R. da Rocha; Fernando C. da Silva; Vitor F. Ferreira

The synthesis of several xanthenes based on the 1,3-dicarbonyl scaffolds lawsone and coumarin was developed using tandem three-component reactions involving the reagents ortho-hydroxybenzaldehyde, as bifunctional reagent, and an appropriate thiol. These reactions generated two series of para- and ortho-naphthoxanthenes that are structurally related to β- and β-pyranaphthoquinones and one series of coumarin-xanthene derivatives.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20170032

Published online: February 16, 2017.


J. Braz. Chem. Soc. 2017

Nuclear Magnetic Resonance (1.40 T) and Mid Infrared (FTIR-ATR) Associated with Chemometrics as Analytical Methods for the Analysis of Methyl Ester Yield Obtained by Esterification Reaction

Sara R. M. Kollar; Etelvino H. Novotny; Claudia J. do Nascimento; Paulo A. Z. Suarez

1H NMR (60 and 300 MHz) and FTIR-ATR associated with chemometrics were used to quantify esterification of fatty acids with methanol.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20170031

Published online: February 15, 2017.


J. Braz. Chem. Soc. 2017

Isolation and Structural Characterization of Two New Furanoditerpenes from Pterodon emarginatus (Fabaceae)

Leandra A. R. Oliveira; Gerlon A. R. Oliveira; Geralda F. Lemes; Wanderson Romão; Boniek G. Vaz; Sérgio Albuquerque; Cristiana Gonçalez; Luciano M. Lião; Maria Teresa F. Bara

Two new furanoditerpenes were obtained from Pterodon emarginatus. Methyl 6α-acetoxy-7β-hydroxyvouacapan-17β-oate (previously identified) showed leishmanicidal activity.

http://dx.doi.org/10.21577/0103-5053.20170029

Published online: February 15, 2017.


J. Braz. Chem. Soc. 2017

Volatile Compounds from the Bark Bugs Phloea subquadrata and Phloeophana longirostris (Heteroptera: Phloeidae)

Francine S. A. da Fonseca; Adriana T. Salomão; João Vasconcellos-Neto; Thiago I. B. Lopes; Anita J. Marsaioli

The volatile compounds differed both within and between Phloeidae species. Some compounds were sex specific, and others were characteristic of different developmental stages.

This article is part of the Special Issue BIOprospecTA-BIOTA.

http://dx.doi.org/10.21577/0103-5053.20170028

Published online: February 14, 2017.


Short Report J. Braz. Chem. Soc. 2017

"Sweet Chemistry": a Green Way for Obtaining Selenium Nanoparticles Active against Cancer Cells

Adriana P. Vieira; Erika M. Stein; Daniel X. Andreguetti; Gerardo Cebrián‑Torrejón; Antonio Doménech-Carbó; Pio Colepicolo; Ana Maria D. C. Ferreira

A clean synthesis was developed to prepare selenium nanoparticles using fructose as the reducing agent. The obtained nanoparticles presented high toxicity toward cancer cells, and on the contrary are not toxic against human P4 fibroblasts.

http://dx.doi.org/10.21577/0103-5053.20170025

Published online: February 13, 2017.

Articles J. Braz. Chem. Soc. 2017

On the Fluorescent, Steric and Electronic Factors Affecting the Detection of Metallic Ions Using an Imidazolyl-Phenolic Derived Fluorescent Probe

Ronaldo B. Orfão Jr.; Fabrício de Carvalho; Paula Homem-de-Mello; Fernando H. Bartoloni

Addition of CuII or FeIII switches OFF the probe emission, but FeIII also induces the formation of a fluorescent coordinated compound (switch ON).

http://dx.doi.org/10.21577/0103-5053.20170024

Published online: February 10, 2017.


J. Braz. Chem. Soc. 2017

Commercial and Noncommercial Peroxidases Activity under Ultrasound and Microwave Treatment: a Pretreatment to Improve Wastewater Treatment

Simone M. Golunski; Thamarys Scapini; Tatiani Andressa Modkovski; Camila T. Marques; Aline F. Camargo; Karina Paula Preczeski; Camila Dalla Rosa; Daiane P. Baldissarelli; Jéssica Mulinari; Bruno Venturin; Gean D. L. P. Vargas; Jaqueline G. Buffon; Altemir José Mossi; Helen Treichel

Using a power of 30% and a temperature of 55 °C an increase in relative activity of 147.9% in the enzyme from soybean meal was obtained.

http://dx.doi.org/10.21577/0103-5053.20170023

Published online: February 10, 2017.

J. Braz. Chem. Soc. 2017

Polypyridyl Ruthenium Complexes: Novel DNA-Intercalating Agents against Human Breast Tumor

João P. Barolli; Rodrigo S. Corrêa; Fabio S. Miranda; Juliana U. Ribeiro; Carlos Bloch Jr.; Javier Ellena; Virtudes Moreno; Márcia R. Cominetti; Alzir A. Batista

Ruthenium(II) complexes with the extended planar ligand [dipyrido[3,2-a:2′,3′-c]quinoxaline[2,3-b]quinoxaline)] have been synthesized and shown to be active against breast tumor cells (MDA-MB 231 and MCF-7).

http://dx.doi.org/10.21577/0103-5053.20170019

Published online: February 7, 2017.


J. Braz. Chem. Soc. 2017

Multi-gram Preparation of 7-Nitroquinoxalin-2-amine

Daniel N. do Amaral; Fernando R. de Sá Alves; Eliezer J. Barreiro; Stefan A. Laufer; Lídia M. Lima

A methodology to obtain 7-nitroquinoxalin-2-amine using o-phenylenediamine as starting material in a five-step procedure in good yields and high purity.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20170018

Published online: February 6, 2017.


J. Braz. Chem. Soc. 2017

Magnetic Solid-Phase Extraction in Combination with Ultra High-Performance Liquid Chromatography-Tandem Mass Spectrometry Analysis: Quantification of Risperidone and 9-Hydroxyrisperidone in Biological Samples

Qinhong Yin; Yanqin Zhu; Yaling Yang

Magnetic solid phase extraction procedure used for the determination of targeted compounds in biological samples.

http://dx.doi.org/10.21577/0103-5053.20170016

Published online: February 6, 2017.

J. Braz. Chem. Soc. 2017

Grape and Apple Pomaces from Southern Brazil: Valorization of By-Products through Investigation of Their Antioxidant Potential

Mariéli Karling; Thariane C. Bicas; Vanderlei Aparecido de Lima; Tatiane Luiza C. Oldoni

Optimizing the extraction of phenolic antioxidants from grape and apple pomaces from Brazil using response surface methodology.

http://dx.doi.org/10.21577/0103-5053.20170014

Published online: February 3, 2017.

J. Braz. Chem. Soc. 2017

Synthesis by Click Reactions and Antiplasmodial Activity of Lupeol 1,2,3-Triazole Derivatives

Tatiane F. Borgati; Guilherme R. Pereira; Geraldo C. Brandão; Juliana O. Santos; Dayane Aparecida M. Fernandes; Renata C. de Paula; Maria Fernanda A. do Nascimento; Luciana F. Soares; Júlio César D. Lopes; José D. de Souza Filho; Alaíde B. de Oliveira

Five new lupeol 1,2,3-triazole derivatives were synthesized from lupeol which was isolated from Parahancornia fasciculata and were assayed for antiplasmodial and cytotoxic activity.

http://dx.doi.org/10.21577/0103-5053.20170013

Published online: February 3, 2017.


J. Braz. Chem. Soc. 2017

Femtoliter Scale Detection of an Antithyroid Drug Using Gold Nanoparticles in a Microfluidic Chip

Atefeh Abbasi-Ahd; Nader Shokoufi; Sara Adeleh; Kazem Kargosha

Photo thermal lens effect of gold nanoparticles (GNPs) capped with methimazole.

http://dx.doi.org/10.21577/0103-5053.20170011

Published online: February 3, 2017.

J. Braz. Chem. Soc. 2017

Effect of PVA Concentration on Structure and Performance of Precipitated Iron-Based Catalyst for Fischer-Tropsch Synthesis

Cailian Ma; Guanghua Dong; Xia Liu; Jiangang Chen

Polyvinyl alcohol (PVA) concentration has a significant effect on the structure of catalysts and dispersion of their active phase. Therefore, the catalyst prepared with 15 wt.% PVA, exhibits high performance and good thermal stability for Fischer-Tropsch synthesis.

http://dx.doi.org/10.21577/0103-5053.20170010

Published online: January 30, 2017.

J. Braz. Chem. Soc. 2017

A Straightforward Method for Determination of Al and Na in Aluminosilicates Using ICP OES

Francisca S. O. Ramos; Ramon K. S. Almeida; Cícero A. Lopes Júnior; Marco Aurélio Z. Arruda; Heloise O. Pastore

Microwave-assisted acid decomposition using closed vessels was applied to aluminosilicates in order to quantify Na and Al, reducing the time consumed for samples preparation step. This procedure avoided analytes loses and contamination.

http://dx.doi.org/10.21577/0103-5053.20170008

Published online: January 30, 2017.


J. Braz. Chem. Soc. 2017

Preliminary Evaluation of Novel Triglyceride-Based Nanocomposites for Biomedical Applications

Raimundo R. de Almeida; Juan Gallo; Aiêrta C. C. da Silva; Ana K. O. da Silva; Otilia D. L. Pessoa; Tamara G. Araújo; Luzia K. A. M. Leal; Pierre B. A. Fechine; Manuel Bañobre-López; Nágila M. P. S. Ricardo

Magnetic solid lipid nanoparticles (MSLNs) for application in magnetic hyperthermia and controlled delivery of oncocalyxone-A.

http://dx.doi.org/10.21577/0103-5053.20170007

Published online: January 26, 2017.

J. Braz. Chem. Soc. 2017

Exploratory Analysis of Sparkling Wines Based in the Combined Data of Stable Isotope Analysis with Physicochemical Variables and Volatile Profile

Victor H. J. M. dos Santos; Paulo G. Celso; Artur L. G. Rocha; Samuel Giovanaz; Carolina Z. Guerra; Jessica P. Pires; Pâmela M. Engelmann; Luiz F. Rodrigues

The chemometric tool was applied to the physicochemical, volatiles and stable isotope data to perform the exploratory analysis and classification of sparkling wines samples.

http://dx.doi.org/10.21577/0103-5053.20170006

Published online: January 24, 2017.


J. Braz. Chem. Soc. 2017

Methylene Violet 3 RAX Dye as a New Reagent for the Determination of Nitrite in Cured Meats and Vegetables

Caroline O. da Rocha; João Flávio S. Petruci; Arnaldo A. Cardoso

Methylene Violet 3 RAX dye as a new reagent for the determination of nitrite in cured meats and vegetables.

http://dx.doi.org/10.21577/0103-5053.20170004

Published online: January 24, 2017.

J. Braz. Chem. Soc. 2017

Implementation of a Spectrofluorimetric Method to the Determination of 8-Methoxypsoralen in Capsules and Creams Used in Treatment of Psoriasis and Vitiligo: an Evaluation of the Quality of Compounding Pharmacies in Rio de Janeiro

Catarina A. Oliveira; Marcos M. Gouvêa; Flávio H. S. A. Ribeiro; Eduardo Ricci‑Júnior; Flávia F. de C. Marques

The spectrofluorimetric determination of 8-methoxypsoralen was applied to assessing the quality of medicines produced by compounding pharmacies.

http://dx.doi.org/10.21577/0103-5053.20170003

Published online: January 24, 2017.

J. Braz. Chem. Soc. 2017

Multivariate Calibration to Determine Phorbol Esters in Seeds of Jatropha curcas L. Using Near Infrared and Ultraviolet Spectroscopies

Jussara V. Roque; Luiz A. S. Dias; Reinaldo F. Teófilo

Determination of phorbol esters of Jatropha curcas L. using NIR and UV spectroscopies employing PLS regression and variable selection.

http://dx.doi.org/10.21577/0103-5053.20160332

Published online: January 18, 2017.

J. Braz. Chem. Soc. 2017

Coencapsulation of trans-Dehydrocrotonin and trans-Dehydrocrotonin:hydroxypropyl-β-cyclodextrin into Microparticles

Waldenice A. Morais; Benício de Barros Neto; Isabella M. F. Cavalcanti; Francisco H. Xavier Junior; Nereide S. Santos-Magalhães; Maria Aparecida M. Maciel

Coencapsulation of t-DCTN and t-DCTN:HP-β-CD into PCL and PLGA microspheres were developed using factorial design. Oral formulations of PLGA microparticles containing t-DCTN and/or t-DCTN:HP-β-CD were obtained to be applied in in vivo studies.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160331

Published online: January 18, 2017.

J. Braz. Chem. Soc. 2017

AC Induced Corrosion of Underground Steel Pipelines under Cathodic Protection: III. Theoretical Approach with Electrolyte Resistance and Double Layer Capacitance for Mixed Corrosion Kinetics

Ibrahim Ibrahim; Michel Meyer; Hisasi Takenouti; Bernard Tribollet

Cathodic protection potential in presence of a stray AC voltage for steel pipe buried in a mildly corrosive soil provided that AC corrosion does not induce any change of soil chemistry.

http://dx.doi.org/10.21577/0103-5053.20160330

Published online: January 18, 2017.

J. Braz. Chem. Soc. 2016

Development of a Novel Spectrophotometric Method Based on Diazotization-Coupling Reaction for Determination of Bisphenol A

Zhiqun Xu; Qiao Wu; Yunjian Duan; Meixia Yang; Minrui Ou; Xiaoping Xu

A novel, rapid, and easy method for quantification of BPA via diazo coupling reaction and its applications in the actual food samples.

http://dx.doi.org/10.21577/0103-5053.20160328

Published online: December 20, 2016.

J. Braz. Chem. Soc. 2016

Antiproliferative Activity of Dibenzoylmethanes from Root Bark of Muellera filipes (Benth) M.J. Silva & A.M.G. Azevedo

Érica L. Santos; Juliana Jo; Francisco A. Marques; Ana Maria G. A. Tozzi; Ana Lúcia T. G. Ruiz; Beatriz Helena L. N. S. Maia

Dibenzoylmethane derivatives with a substituent on C-8 are extremely rare in nature. These compounds can potentially be used as biomarkers of closely related genera. Two compounds showed strong activity against human cancer cell lines.

http://dx.doi.org/10.21577/0103-5053.20160327

Published online: December 20, 2016.


Short Report J. Braz. Chem. Soc. 2016

Suzuki-Miyaura Coupling between 3-Iodolawsone and Arylboronic Acids. Synthesis of Lapachol Analogues with Antineoplastic and Antileishmanial Activities

Sara L. S. Gomes; Gardenia C. G. Militão; Arinice M. Costa; Cláudia Ó. Pessoa; Letícia V. Costa-Lotufo; Edézio F. Cunha-Junior; Eduardo C. Torres-Santos; Paulo R. R. Costa; Alcides J. M. da Silva

Suzuki-Miyaura cross coupling reaction between 2-hydroxy-3-iodonaphthalene-1,4-dione and a series of arylboronic acids/esters followed by OH-protection as the corresponding N,N-diethyl carbamates is reported. The synthesized compounds were evaluated regarding their antineoplastic and antileishmanial activities furnishing promising results.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160326

Published online: December 20, 2016.


Articles J. Braz. Chem. Soc. 2016

Differentiation of Toxic and Non-Toxic Leaves of Jatropha curcas L. Genotypes by Leaf Spray Mass Spectrometry

Igor Pereira; Thays C. de Carvalho; Wanderson Romão; Paulo R. Filgueiras; Bruno G. Laviola; Clenilson M. Rodrigues; Patrícia V. Abdelnur; Boniek G. Vaz

A recent ambient ionization mass spectrometry technique known as leaf spray (LS-MS) is a simple and fast method for screening of plant samples. In this work, toxic and non-toxic Jatropha curcas leaves were differentiated by LS-MS.

http://dx.doi.org/10.21577/0103-5053.20160325

Published online: December 20, 2016.


J. Braz. Chem. Soc. 2016

Sensitive Estrogens Determination in Wastewater Samples by HPLC and Fluorescence Detection

Marcus Vinicius de Liz; Bianca do Amaral; Sandra Stets; Noemi Nagata; Patricio Peralta-Zamora

Fluorescence-based HPLC method for quantification of estrogens (17β-estradiol and 17α-ethinylestradiol) in both influent and effluent wastewater samples.

http://dx.doi.org/10.21577/0103-5053.20160324

Published online: December 20, 2016.

J. Braz. Chem. Soc. 2016

Improved Reactivity in the Ring-Opening Polymerization of ε-Caprolactone with a Trinuclear Titanium(IV) Oxochloroneopentoxide as Initiator

Siddhartha O. K. Giese; Thiago A. da Silva; David L. Hughes; André Luis Rüdiger; Eduardo L. de Sá; Sônia F. Zawadzki; Jaísa F. Soares; Giovana G. Nunes

Complexes [Ti3(OiPr)11][FeCl4] and [Ti3(O)(Cl)(ONep)9] were employed as initiators for the polymerization of ε-caprolactone (ε-CL). The better polymerization reactivity of [Ti3(O)(Cl)(ONep)9] seems to be associated with the maintenance of its polynuclear structure in the reaction mixture.

http://dx.doi.org/10.21577/0103-5053.20160321

Published online: December 15, 2016.


J. Braz. Chem. Soc. 2016

Physical-Chemical Properties of the Support Immobead 150 Before and After the Immobilization Process of Lipase

Carla R. Matte; Carolina Bordinhão; Jakeline K. Poppe; Edilson V. Benvenutti; Tania M. H. Costa; Rafael C. Rodrigues; Plinho F. Hertz; Marco A. Z. Ayub

Immobead 150 possess interesting features to be used as a support for immobilization of lipases.

http://dx.doi.org/10.21577/0103-5053.20160319

Published online: December 13, 2016.


J. Braz. Chem. Soc. 2016

Catechol Oxidase, Phosphatase-Like Activity, DNA/BSA Binding Studies of RuII Complexes of S-Allyldithiocarbazate: Synthesis and Spectral Studies

Ponnusamy Selvakumar; Ramaswamy Narayanasamy; Nanjan Nanjundan; Krishnaswamy Velmurugan; Raju Nandhakumar

Ruthenium(II) complexes containing S-allyldithiocarbazate derivatives, potentially active towards in vitro biomolecular interactions and bio-catalytic transformations such as catechol oxidation and phosphate hydrolysis.

http://dx.doi.org/10.21577/0103-5053.20160318

Published online: December 13, 2016.


J. Braz. Chem. Soc. 2016

Atom Transfer Radical Polymerization of Methyl Methacrylate Mediated by Grubbs 1st and 2nd Generation Catalysts: Insight into the Active Species

Maria Beatriz A. Afonso; Lucas G. Gonçalves; Patrícia Borim; José Luiz S. Sá; Beatriz E. Goi; Valdemiro P. Carvalho-Jr.

Grubbs 1st and 2nd generation catalyst were evaluated as catalyst in atom-transfer radical polymerization (ATRP) of methyl methacrylate (MMA) and their yet unknown mechanism for ATRP was investigated.

http://dx.doi.org/10.21577/0103-5053.20160314

Published online: December 6, 2016.


J. Braz. Chem. Soc. 2016

Multifunctional Nanocomposites between Different Carbon Nanostructures and Styrene Acrylic Latex

Carolina F. Matos; Fernando Galembeck; Aldo J. G. Zarbin

Multifunctional nanocomposites between carbon nanostructures and acrylic latex were successfully prepared, with improved and tunable properties compared to the neat polymer.

http://dx.doi.org/10.21577/0103-5053.20160313

Published online: December 5, 2016.


J. Braz. Chem. Soc. 2016

Antimicrobial Screening of Endophytic Fungi Isolated from the Aerial Parts of Paepalanthus chiquitensis (Eriocaulaceae) Led to the Isolation of Secondary Metabolites Produced by Fusarium fujikuroi

Felipe Hilário; Vanessa M. Chapla; Angela R. Araujo; Paulo T. Sano; Taís M. Bauab; Lourdes C. dos Santos

Metabolite produced by Fusarium fujikuroi isolated from the capitulae of Paepalanthus chiquitensis (Eriocaulaceae). Photo of P. chiquitensis was taken by Marcelo T. L. de Oliveira.

http://dx.doi.org/10.21577/0103-5053.20160312

Published online: December 5, 2016.


J. Braz. Chem. Soc. 2016

Study of the Influence of Biodiesel in Soot Emissions of Diesel Laminar Diffusion Flames

Lincoln Tolomelli e Tolomelli; Luiz G. Barreta; Pedro T. Lacava; Dermeval Carinhana Jr.

Biodiesel/diesel blends flames are investigated using LII. The results showed a decrease of soot production as the amount of biodiesel was increased.

http://dx.doi.org/10.21577/0103-5053.20160311

Published online: November 29, 2016.

J. Braz. Chem. Soc. 2016

Copaiba Oil and Its Constituent Copalic Acid as Chemotherapeutic Agents against Dermatophytes

Marcela T. Nakamura; Eliana H. Endo; João Paulo B. de Sousa; Daniel R. Callejon; Tânia Ueda-Nakamura; Benedito P. Dias Filho; Osvaldo de Freitas; Celso V. Nakamura; Norberto P. Lopes

Copalic acid activity against dermatophytes Trichophyton rubrum, Trichophyton mentagrophytes and Microsporum gypseum.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160309

Published online: November 29, 2016.


J. Braz. Chem. Soc. 2016

Dammarane Triterpenoids from Carnauba, Copernicia prunifera (Miller) H. E. Moore (Arecaceae), Wax

Buana C. de Almeida; Bruno Q. Araújo; Elcio D. S. Barros; Sâmya D. L. Freitas; Dayany S. A. Maciel; Ari J. S. Ferreira; Rafael C. Guadagnin; Gerardo M. Vieira Júnior; João H. G. Lago; Mariana H. Chaves

Sixteen dammarane-type triterpenoids, including thirteen new, were identified from carnauba (Copernicia prunifera) wax (types 1 and 4).

http://dx.doi.org/10.21577/0103-5053.20160308

Published online: November 25, 2016.


J. Braz. Chem. Soc. 2016

Synthesis of N,O-Type Inherently Chiral Calix[4]arenes Substituted on the Lower Rim and their Organocatalysis Properties

Ming-Liang Chang; Yong He; Jing Zhou; Shao-Yong Li

Inherently chiral calix[4]arenes can catalyze Henry reaction between aromatic aldehydes and nitromethane in excellent yields but poor enantioselectivities.

http://dx.doi.org/10.21577/0103-5053.20160307

Published online: November 24, 2016.


J. Braz. Chem. Soc. 2016

An Investigation on Morphology and Fractal Dimension of Diesel and Diesel‑Biodiesel Soot Agglomerates

Aline L. N. Guarieiro; Arantzazu Eiguren-Fernandez; Gisele O. da Rocha; Jailson B. de Andrade

Fractal-like dimension and morphology of ultrafine particles emitted by a diesel engine run with B4, B50, and B100 are evaluated.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160306

Published online: November 24, 2016.


Short Report J. Braz. Chem. Soc. 2016

Synergistic Effect in Drug Solubility by New Binary Micelles of Poly(ε‑caprolactone)-poly(ethylene oxide) and F127®

Lillian M. U. Dutra; Igor M. Cavalcante; Débora H. A. de Brito; Ícaro G. P. Vieira; Maria T. S. Trevisan; Maria E. N. P. Ribeiro; Stephen G. Yeates; Nágila M. P. S. Ricardo

Binary mixtures presented synergistic effect for drug release.

http://dx.doi.org/10.21577/0103-5053.20160302

Published online: November 17, 2016.

J. Braz. Chem. Soc. 2016

Secondary Metabolites from an Infusion of Lippia gracilis Schauer Using the LC‑DAD-SPE/NMR Hyphenation Technique

Valéria R. S. Moraes; Sérgio S. Thomasi; Ricardo F. Sprenger; Vilma M. J. Prado; Elizangela M. O. Cruz; Quezia B. Cass; Antônio G. Ferreira; Arie F. Blank

Chemical structures of the compounds isolated from Lippia gracilis Schauer.

http://dx.doi.org/10.21577/0103-5053.20160299

Published online: November 17, 2016.


Articles J. Braz. Chem. Soc. 2016

Intercalation of Molybdate Ions into Ni/Zn Layered Double Hydroxide Salts: Synthesis, Characterization, and Preliminary Catalytic Activity in Methyl Transesterification of Soybean Oil

Kamila Colombo; Swami A. Maruyama; Carlos I. Yamamoto; Fernando Wypych

Layered nickel/zinc double hydroxide salt was intercalated with acetate anions, which were replaced by molybdate anions. After dehydration at 250 °C, the obtained material was investigated as solid catalysts in the methyl transesterification reaction of soybean oil. Conversions up 65% were obtained with 5% of reusable catalyst in relation to the mass of oil, methanol/soybean oil molar ratio of 35:1, temperature of 120 °C and 4 h of reaction.

http://dx.doi.org/10.21577/0103-5053.20160298

Published online: November 11, 2016.

J. Braz. Chem. Soc. 2016

Differential Scanning Calorimetry and Infrared Spectroscopy Combined with Chemometric Analysis to the Determination of Coffee Adulteration by Corn

Ariadne M. Brondi; Claudia Torres; Jerusa S. Garcia; Marcello G. Trevisan

The results have demonstrate that is possible to detect and quantify the adulteration of coffee by corn, even at low concentrations (less than 1% m/m), employing differential scanning calorimetry and Fourier transform infrared spectroscopy coupled with chemometric analysis.

http://dx.doi.org/10.21577/0103-5053.20160296

Published online: November 11, 2016.

J. Braz. Chem. Soc. 2016

Liver Damage Induced by Succinylacetone: A Shared Redox Imbalance Mechanism between Tyrosinemia and Hepatic Porphyrias

Vanessa E. S. Cardoso; Fernando Dutra; Chrislaine O. Soares; Atecla N. L. Alves; Estela Bevilacqua; Sonia M. Gagioti; Carlos A. A. Penatti; Etelvino J. H. Bechara

Overproduction of ALA in SAME-treated rats impairs redox balance and mimics the liver mitochondrial damage long detected in liver biopsies of porphyric individuals.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160294

Published online: November 8, 2016.

J. Braz. Chem. Soc. 2016

Detection of Counterfeit Durateston® Using Fourier Transform Infrared Spectroscopy and Partial Least Squares - Discriminant Analysis

Diana B. J. Neves; Márcio Talhavini; Jez Willian B. Braga; Jorge J. Zacca; Eloisa D. Caldas

Method using Fourier transform infrared spectroscopy (FTIR) and partial least squares - discriminant analysis (PLS-DA) to discriminate original and counterfeit samples of Durateston®.

http://dx.doi.org/10.21577/0103-5053.20160293

Published online: November 4, 2016.


J. Braz. Chem. Soc. 2016

Brazoides A-D, New Alkaloids from Justicia gendarussa Burm. F. Species

Luciana G. S. Souza; Macia C. S. Almeida; Telma L. G. Lemos; Paulo R. V. Ribeiro; Kirley M. Canuto; Raimundo Braz-Filho; Catarina N. Del Cistia; Carlos Mauricio R. Sant'Anna; Francisco S. Barreto; Manoel O. de Moraes

Four new alkaloids, named Brazoides A-D, together with three known compounds were isolated from Justicia gendarussa Burm. F. (Acanthaceae).

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160291

Published online: November 4, 2016.


J. Braz. Chem. Soc. 2016

Using Gold Nanoparticles as Passive Sampler for Indoor Monitoring of Gaseous Elemental Mercury

Elias B. Santos; Stacy Ferlin; Anne H. Fostier; Italo O. Mazali

Gold nanoparticles film shows a potential applicability as passive sampler for indoor monitoring of gaseous elemental mercury (GEM).

http://dx.doi.org/10.21577/0103-5053.20160290

Published online: November 3, 2016.

J. Braz. Chem. Soc. 2016

Vasoactive Thiomethyl-Pyrimidines: Promising Drug Candidates with Vascular Activity

Audrey N. de Andrade; Alice V. Araújo; Hugo B. W. Barbosa; Almir G. Wanderley; Oscar L. Malta; Janaína V. dos Anjos

Multicomponent ultrasound assisted synthesis of thiomethyl-pyrimidinones with vascular activity.

http://dx.doi.org/10.21577/0103-5053.20160289

Published online: November 3, 2016.


J. Braz. Chem. Soc. 2016

Facile Synthesis Strategy to Create Mesoporous Magnetic Iron Oxides Using Pectin‑Based Precursors

Filipe Q. Mariani; Mariane Dalpasquale; Sérgio H. Toma; Koiti Araki; Helton J. Alves; Fauze J. Anaissi

The methodology of synthetic magnetic iron oxides (MIO), gelation and calcination steps. MIO in the presence of a permanent magnetic field.

http://dx.doi.org/10.21577/0103-5053.20160288

Published online: November 3, 2016.

J. Braz. Chem. Soc. 2016

Assessment of Triazine Herbicides Residual in Fruit and Vegetables Using Ultrasound Assisted Extraction-Dispersive Liquid-Liquid Microextraction with Solidification of Floating Organic Drop

Yahya Pasdar; Meghdad Pirsaheb; Reza Akramipour; Toraj Ahmadi-Jouibari; Nazir Fattahi; Kiomars Sharafi; Hamid Reza Ghaffari

A new ultrasound assisted extraction combined with dispersive liquid-liquid microextraction with solidification of floating organic drop (UAE-DLLME-SFO) method has been developed for the preconcentration of traces of triazine herbicides from fruit and vegetables. In UAE-DLLME-SFO, sonication for extraction of compounds from semisolid and solid matrices and a low-density and less-toxic solvent were used to overcome the disadvantages of conventional DLLME.

http://dx.doi.org/10.21577/0103-5053.20160287

Published online: November 1, 2016.

J. Braz. Chem. Soc. 2016

Simultaneous Quantification of Three Chemical Types Bioactive Compounds in Radix Isatidis and Its Relevant Pharmaceutical Dosage Forms by HPLC-DAD

Ping Xiao; Xiang Li; Jianwei Chen; Jin-ao Duan

A simple and rapid high performance liquid chromatography coupled with diode array detector (HPLC-DAD) method was firstly developed for simultaneous quantification of three chemical types of bioactive components including an alkaloid, six nucleosides and four phenylpropanoids in Radix Isatidis and its relevant pharmaceutical dosage forms.

http://dx.doi.org/10.21577/0103-5053.20160286

Published online: October 27, 2016.

J. Braz. Chem. Soc. 2016

Studies of the Interaction between BSA and a Plumeran Indole Alkaloid Isolated from the Stem Bark of Aspidosperma cylindrocarpon (Apocynaceae)

Otávio A. Chaves; Flávia S. M. Teixeira; Heloisa A. Guimarães; Raimundo Braz‑Filho; Ivo José C. Vieira; Carlos Mauricio R. Sant'Anna; José Carlos Netto-Ferreira; Dari Cesarin-Sobrinho; Aurélio B. B. Ferreira

Plumeran indole alkaloid (PIA) interacts strongly with bovine serum albumin (BSA). Site I is the hottest binding site for PIA and hydrogen bonding as well as hydrophobic interactions are the main intermolecular forces in the association BSA:PIA.

http://dx.doi.org/10.21577/0103-5053.20160285

Published online: October 25, 2016.

J. Braz. Chem. Soc. 2016

Toxic Elements and Microbiological Content of Food: Evidence from a Case Study in a Brazilian City Heavily Contaminated by Lead and Cadmium

Kelly M. Macedo; Isabella M. M. da Silva; Fábio S. de Oliveira; Jacira T. Castro; Daniele C. M. B. dos Santos; Fernanda Freitas; Maykson C. de Jesus

Microbiological and toxic elements (Pb and Cd) analysis were successfully performed to evaluate food quality from a highly contaminated city in Bahia State, Brazil.

http://dx.doi.org/10.21577/0103-5053.20160283

Published online: October 24, 2016.

J. Braz. Chem. Soc. 2016

Determination of Chlorophenol in Environmental Samples Using a Voltammetric Biosensor Based on Hybrid Nanocomposite

Renata K. Mendes; Beatriz S. Arruda; Elizabeth F. de Souza; Alessandra B. Nogueira; Omar Teschke; Luiz O. Bonugli; Augusto Etchegaray

Laccase was successfully immobilized on hybrid nanocomposite, producing a selective biosensor for the quantification of 4-chlorophenol.

http://dx.doi.org/10.21577/0103-5053.20160282

Published online: October 24, 2016.

Short Report J. Braz. Chem. Soc. 2016

Direct Determination of N-Nitrosoglyphosate in Technical Glyphosate Using Ion Chromatography with UV Detection

Mário H. P. Santana; Adriano O. Maldaner; William G. Fraga; Fernanda V. Almeida

A direct and simple ion chromatography (IC) method with UV detection for the determination of NNG in samples of technical glyphosate, below the maximum concentration determined by the Brazilian regulation.

http://dx.doi.org/10.21577/0103-5053.20160280

Published online: October 18, 2016.

Articles J. Braz. Chem. Soc. 2016

Volatile Organic Compounds (VOCs) Emitted by Ilex paraguariensis Plants are Affected by the Herbivory of the Lepidopteran Thelosia camina and the Coleopteran Hedypathes betulinus

Camila B. C. Martins; Diogo M. Vidal; Sandra M. S. Gomes; Paulo H. G. Zarbin

Main volatile organic compounds (VOCs) emitted by I. paraguariensis after the herbivory of Hedypathes betulinus and Thelosia camina

http://dx.doi.org/10.21577/0103-5053.20160279

Published online: October 18, 2016.

J. Braz. Chem. Soc. 2016

Electrodeposition Study of Ni Coatings on Copper from Choline Chloride-Based Deep Eutectic Solvents

Amanda S. C. Urcezino; Luis P. M. dos Santos; Paulo N. S. Casciano; Adriana N. Correia; Pedro de Lima-Neto

SEM images showing the Ni films morphologies involving: ChCl:2EG (left) and ChCl:2U (right) deep eutectic solvents (DES) associated with their corrosion performance.

http://dx.doi.org/10.21577/0103-5053.20160278

Published online: October 14, 2016.

J. Braz. Chem. Soc. 2016

Easy and Simple SiO2 Immobilization of Lipozyme CaLB-L: Its Use as a Catalyst in Acylation Reactions and Comparison with Other Lipases

Mateus Mittersteiner; Tayani M. Machado; Paulo Cesar de Jesus; Patrícia B. Brondani; Dilamara R. Scharf; Renato Wendhausen Jr.

Herein we explore the immobilization of Lipozyme CaLB-L in SiO2, its application in acylation reactions and a comparison of the selectivity with other commercial lipases.

http://dx.doi.org/10.21577/0103-5053.20160277

Published online: October 14, 2016.

J. Braz. Chem. Soc. 2016

Development and Characterization of Vitamin A-Loaded Solid Lipid Nanoparticles for Topical Application

Mauricio Argimón; Mariano Romero; Pablo Miranda; Álvaro W. Mombrú; Iris Miraballes; Patricia Zimet; Helena Pardo

In this work we present the development and characterization of a novel formulation of vitamin A-loaded solid lipid nanoparticles, containing Gelucire 44/14® and cetyl alcohol, prepared using hot homogenization.

http://dx.doi.org/10.21577/0103-5053.20160276

Published online: October 14, 2016.

J. Braz. Chem. Soc. 2016

The Role that Electrolytes Play in the Synthesis of Water-Soluble CdTe Quantum Dots Prepared at Ambient Temperature

Melissa S. Carvalho; Caroline Mayrinck; Ellen Raphael; Jefferson Bettini; Jefferson L. Ferrari; Marco A. Schiavon

Weak electrolytes acted in the electrical double layer of the growing nanocrystals by competing with mercapto ligands for coordination with cadmium ions.

http://dx.doi.org/10.21577/0103-5053.20160275

Published online: October 14, 2016.


J. Braz. Chem. Soc. 2016

Tailored Degree of Functionalization and Length Preservation of Multiwalled Carbon Nanotubes by an Optimized Acid Treatment Process

Vinícius G. Castro; Ingrid B. Costa; Magnovaldo C. Lopes; Rodrigo L. Lavall; Kátia C. S. Figueiredo; Glaura G. Silva

An efficient functionalization method of multiwalled carbon nanotubes (MWCNTs) was developed. Length reduction and degree of functionalization were statistically determined and can be tailored for different applications.

http://dx.doi.org/10.21577/0103-5053.20160274

Published online: October 11, 2016.


J. Braz. Chem. Soc. 2016

A Multi-Pumping Flow System with Pulsed Fluidization to Evaluate Soil Capacity for Phosphate Adsorption

Jeane M. C. Machado; Wanessa R. Melchert; Elias A. G. Zagatto; Marcos Y. Kamogawa

A multi-pumping flow system with a fluidized bed column is proposed to determination of the soil capacity in adsorb phosphate.

http://dx.doi.org/10.21577/0103-5053.20160273

Published online: October 6, 2016.

Short Report J. Braz. Chem. Soc. 2016

Assessment of Metabolism of the Eastern Oyster and Eastern Elliptio Using NMR Spectroscopy

Haakil Lee

Magnetic resonance image of eastern oyster and the biochemical schematic relating metabolites to biochemical pathways.

http://dx.doi.org/10.21577/0103-5053.20160272

Published online: October 5, 2016.

Articles J. Braz. Chem. Soc. 2016

Ethylene Glycol Electro-Oxidation on Platinum-Free Surfaces: How the Composition of PdRuRh Surfaces Influences the Catalysis

Gisele A. B. Mello; Pedro H. B. Fernandes; Martha Janete de Giz; Giuseppe A. Camara

Opposite to Pt, on PdRuRh catalysts CO2 is produced earlier than oxalic acid, and there is no self-inhibitory effect when EG concentration is increased.

http://dx.doi.org/10.21577/0103-5053.20160270

Published online: October 5, 2016.

J. Braz. Chem. Soc. 2016

Study of Viability of Solid-Phase Microextraction, in vivo, in the Extraction of Microbial Volatile Organic Compounds Associated to the Pigment Production Process by the Monascus Fungus, in Submerged Fermentation

Robson L. Schacker; Denise E. Moritz; Miguel S. B. Caro; Luiz A. S. Madureira; Adriana N. Dias; Josias O. Merib; Douglas Isfran; Eduardo Carasek

Seventeen compounds were found associated with the presence of the Monascus fungus (in vivo solid phase microextraction (SPME)), the main being ethanol, 2-methyl-propanol, 3-methylbutanol, 2-methylbutanol and 2-phenylethanol, such compounds have been studied by empirical models.

http://dx.doi.org/10.21577/0103-5053.20160269

Published online: October 4, 2016.


J. Braz. Chem. Soc. 2016

Antitubercular Activity Increase in Labdane Diterpenes from Copaifera Oleoresin through Structural Modification

Aline N. Silva; Ana Carolina F. Soares; Mirela M. W. Cabral; Alex R. P. de Andrade; Marilza B. M. da Silva; Carlos H. G. Martins; Rodrigo C. S. Veneziani; Sérgio R. Ambrósio; Jairo K. Bastos; Vladimir C. G. Heleno

Our work with natural diterpenes from Copaifera oilresin led to derivatives with remarkably increased anti-tubercular activity. Derivatives were obtained through synthetic structural modifications and their activities reached two, five and twenty-fold compared to natural precursors.

http://dx.doi.org/10.21577/0103-5053.20160268

Published online: September 30, 2016.

J. Braz. Chem. Soc. 2016

Thermodynamic Feasibility of Pure Hydrogen Production and Storage in Iron and Germanium Based Double Chemical Looping Process

Grzegorz Słowiński; Adam Smoliński

The idea of pure hydrogen production and storage in iron and germanium based double chemical looping process.

http://dx.doi.org/10.21577/0103-5053.20160267

Published online: September 29, 2016.

J. Braz. Chem. Soc. 2016

Electrooxidation of Mixed Ethanol and Methanol Solutions on PtSn/C Electrocatalysts Prepared by the Polymeric Precursor Method

Aline Amorim; Luanna S. Parreira; Júlio César M. Silva; Mauro C. dos Santos

PtSn/C (3:1) electrocatalyst for mixed solutions EtOH:MeOH oxidation can result the formation of CO2 at low potentials, as well as the highest amount of by-products than ethanol and methanol.

http://dx.doi.org/10.21577/0103-5053.20160266

Published online: September 29, 2016.


Short Report J. Braz. Chem. Soc. 2016

Eco-Friendly, Catalyst and Solvent-Free, Synthesis of Acetanilides and N-Benzothiazole-2-yl-acetamides

Silvio Cunha; Lourenço L. B. de Santana

An expeditious and green synthesis of acetamides is described in good yield without external heating, and with simple purification.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160265

Published online: September 27, 2016.


Articles J. Braz. Chem. Soc. 2016

Strategy for Correction of Matrix Effect on the Determination of Pesticides in Water Bodies Using SPME-GC-FID

Vitor P. A. Silva; Mário S. O. Paz; Rivelino M. Cavalcante; Ronaldo F. Nascimento

Determination of pesticides in river water, estuarine, seawater and weir water using standard surrogate and relation factor by solid phase microextraction gas chromatography with flame ionization detector (SPME-GC-FID).

http://dx.doi.org/10.21577/0103-5053.20160264

Published online: September 27, 2016.

J. Braz. Chem. Soc. 2016

Development and Characterization of Synthetic Chalcones-Loaded Eudragit RS 100 Microparticles for Oral Delivery

Cristian R. Kleemann; Talitha C. dos Santos; Luciana C. Tavares; Moacir G. Pizzolatti; Angela M. de Campos

The study presents the development of a drug delivery system and validation of a simple and rapid high performance liquid chromatography method for the characterization of two chalcones in Eudragit® RS100-based microparticles

http://dx.doi.org/10.21577/0103-5053.20160263

Published online: September 26, 2016.

J. Braz. Chem. Soc. 2016

Synthesis, Characterization and Dielectric Properties of New 5-(4-Hydroxyphenyl)-10,15,20-tri-4-[2-(3-pentadecylphenoxy)ethoxy]phenyl porphyrin and Their Ni, Co and Cu Complexes

João P. F. Mota; Antônio E. da Costa Júnior; Viviane G. P. Ribeiro; Samuel G. Sampaio; Nayane M. A. Lima; Fernando L. F. da Silva; Claudenilson S. Clemente; Giuseppe Mele; Diego Lomonaco; Selma E. Mazzetto

Synthesis of a novel asymmetric porphyrin based on cardanol.

http://dx.doi.org/10.21577/0103-5053.20160261

Published online: September 26, 2016.


J. Braz. Chem. Soc. 2016

Study of Reactions of Two Mannich Bases Derived of 4'-Hydroxychalcones with Glutathione by RP‑TLC, RP‑HPLC and RP‑HPLC‑ESI‑MS Analysis

Aline Bernardes; Caridad N. Pérez; Mátyás Mayer; Cameron C. da Silva; Felipe T. Martins; Pál Perjési

Study on formation of GSH conjugation reaction of Mannich bases of 4'-hydroxylchalcones by RP-TLC, RP-HPLC and RP-HPLC-MS methods.

http://dx.doi.org/10.21577/0103-5053.20160260

Published online: September 20, 2016.


J. Braz. Chem. Soc. 2016

Preparative Separation and Structural Identification of Impurities of a New α2‑Adrenoceptor Agonist Using Stacking Injection, LC-MSn and LC-SPE-NMR

Josiane O. Cardoso; Sérgio S. Thomasi; Tiago Venâncio; Ivan R. Pitta; Maria do Carmo A. de Lima; Regina V. Oliveira

A semi-preparative chromatography application and stacking injection for purification of drugs with high efficiency and lower consumption of solvents associated with liquid chromatography-multistage mass spectrometry (LC-MSn) and liquid chromatography-solid phase extraction-nuclear magnetic resonance (LC-SPE-NMR) techniques for structural characterization of impurities.

http://dx.doi.org/10.21577/0103-5053.20160259

Published online: September 20, 2016.


J. Braz. Chem. Soc. 2016

Development of a Dissolution Test for Fenbendazole-Praziquantel Capsules Using UV-PLS Method

Silvana E. Vignaduzzo; María A. Operto; Patricia M. Castellano

The aim was to develop a dissolution test for fenbendazole-praziquantel capsules and an UV-PLS method for its evaluation.

http://dx.doi.org/10.21577/0103-5053.20160258

Published online: September 19, 2016.

J. Braz. Chem. Soc. 2016

First Asymmetric Reduction of Isatin by Marine-Derived Fungi

Willian G. Birolli; Irlon M. Ferrreira; David E. Q. Jimenez; Bianca N. M. Silva; Bárbara V. Silva; Angelo C. Pinto; André L. M. Porto

A screening was carried out and several strains of marine-derived fungi were able to reduce isatin and produced the enantioenriched dioxindole, up to 66% ee and with different conversions (11-98%).

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

http://dx.doi.org/10.21577/0103-5053.20160256

Published online: September 14, 2016.


J. Braz. Chem. Soc. 2016

Miscellaneous Diterpenes from the Aerial Parts of Plectranthus ornatus Codd

Fábio N. Ávila; Francisco C. L. Pinto; Thiciana S. Sousa; Maria Conceição M. Torres; Leticia V. Costa-Lotufo; Danilo D. Rocha; Mayron A. de Vasconcelos; Nairley Cardoso-Sá; Edson H. Teixeira; Maria Rose Jane R. Albuquerque; Edilberto R. Silveira; Otília D. L. Pessoa

Nine diterpenes, including five unknown diterpenes derivatives, were isolated from the aerial parts of cultivated specimens of Plectranthus ornatus. All compounds were assayed against the four human cancer cell lines, and Gram-positive and Gram-negative bacteria strains.

http://dx.doi.org/10.21577/0103-5053.20160255

Published online: September 14, 2016.


J. Braz. Chem. Soc. 2016

Larvicidal Activity of Beauveria bassiana Extracts against Aedes aegypti and Identification of Beauvericins

Juliana F. S. Daniel; Andressa A. Silva; Danielle H. Nakagawa; Lívia S. de Medeiros; Mário G. Carvalho; Lucineli J. Tavares; Lucas M. Abreu; Edson Rodrigues-Filho

The cyclodepsipeptides beauvericins and bassianolide were identified from the Beauveria bassiana extracts. These extracts showed larvicidal activity on 3rd instar of Aedes aegypti.

http://dx.doi.org/10.21577/0103-5053.20160253

Published online: September 9, 2016.

J. Braz. Chem. Soc. 2016

Direct Incorporation of Ginger and Oregano Antioxidants in Canola Oil

Andressa H. A. Grabsk; Alexandre S. Avincola; Thiago Claus; Carla Porto; Jesuí V. Visentainer; Eduardo J. Pilau

This is an efficient method of direct extraction/incorporation of antioxidants from oregano and ginger in canola oil using a green extraction process, which is safe for health and contributes to environmental sustainability.

http://dx.doi.org/10.21577/0103-5053.20160252

Published online: September 9, 2016.

J. Braz. Chem. Soc. 2016

Isopropyl Octanoate Synthesis Catalyzed by Layered Zinc n-Octanoate

Swami A. Maruyama; Luis Ricardo S. Kanda; Fernando Wypych

Reusable layered zinc n-octanoate was employed as catalyst in the esterification of octanoic acid with isopropanol, providing high acid to ester conversions.

http://dx.doi.org/10.21577/0103-5053.20160251

Published online: September 5, 2016.


Short Report J. Braz. Chem. Soc. 2016

A New Prenylisoflavone from the Antifungal Extract of Leaves of Vatairea guianensis Aubl.

Ronilson F. Souza; Geilson A. da Silva; Alberto C. Arruda; Milton N. da Silva; Alberdan S. Santos; Daniella P. A. Grisólia; Moises B. Silva; Claudio G. Salgado; Mara Silvia P. Arruda

One new isoflavone, in addition to two known ones were isolated from the leaves of Vatairea guianensis Aubl. (Fabaceae). The extract, AcOEt fraction and two isolated compounds exhibited antifungal activity through in vitro testing.

http://dx.doi.org/10.21577/0103-5053.20160250

Published online: September 1, 2016.


Articles J. Braz. Chem. Soc. 2016

Synthesis, Three-Dimensional Structure, Conformation and Correct Chemical Shift Assignment Determination of Pharmaceutical Molecules by NMR and Molecular Modeling

Sirlene O. F. de Azeredo; Edijane M. Sales; José D. Figueroa-Villar

Synthesis and application of NMR and molecular modeling to confirm the complete structure and the non questionable chemical shift assignment of these products.

http://dx.doi.org/10.21577/0103-5053.20160248

Published online: August 31, 2016.


J. Braz. Chem. Soc. 2016

In Tube Ultrasonic and Air Assisted Liquid-Liquid Microextraction-Gas Chromatography-Mass Spectrometry Determination: a Novel Method for the Determination of Phthalate Esters in Aqueous Samples

Abolfazl Farahani; Majid Ramezani; Jalal Hassan; Ali Niazi

In tube ultrasonic and air assisted liquid-liquid microextraction IT-UAA-LLME) method, was developed for the preconcentration of some phthalate esters, prior to their determination using gas chromatography mass spectrometry.

http://dx.doi.org/10.21577/0103-5053.20160247

Published online: August 31, 2016.

J. Braz. Chem. Soc. 2016

Laccase-Assisted Rapid Synthesis of Colloidal Gold Nanoparticles for the Catalytic Reduction of 4-Nitrophenol

Fang Li; Zheng Li; Chang Zeng; Yonggang Hu

Gold nanoparticles were rapidly synthesized by using laccase in alkaline medium at ambient conditions, and exhibited high catalytic stability for the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4.

http://dx.doi.org/10.21577/0103-5053.20160246

Published online: August 30, 2016.

J. Braz. Chem. Soc. 2016

A Simple and Fast Method for Magnetic Solid Phase Extraction of Ochratoxin A

Azam Sargazi; Amin Aliabadi; Ali Rahdari; Samin Allahdini-Hesaroiyeh; Massoud Nejati-Yazdinejad; Mostafa Heidari Majd

Dopamine loaded MNPs were used as an electrostatic sorbent in magnetic solid phase extraction for separation of ochratoxin A.

http://dx.doi.org/10.21577/0103-5053.20160245

Published online: August 30, 2016.

J. Braz. Chem. Soc. 2016

Calcium Phosphate Coatings by Sol-Gel on Acrylonitrile-butadiene-styrene Substrate

Lucimara C. Bandeira; Beatriz M. de Campos; Katia J. Ciuffi; Eduardo J. Nassar; Jorge V. L. Silva; Marcelo F. Oliveira; Izaque A. Maia

The sol-gel methodology affords materials with useful properties for application in biological medium. Additive manufacture is an effective technology to produce complex macrostructures. In combination, sol-gel and additive manufacture produce materials with new properties for various applications.

http://dx.doi.org/10.21577/0103-5053.20160244

Published online: August 24, 2016.

Online version ISSN 1678-4790 Printed version ISSN 0103-5053
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