JBCS



3:04, ter fev 18

Acesso Aberto/TP



vol. 44, No. 5, 2021



Artigo de Capa
Quim. Nova 2021, 44(5), 599-615

Recentes avanços na funcionalização seletiva de quinolinas

Dartagnan S. P. Ferreira; Valter E. Murie#; Thiago dos Santos#; Paulo C. Vieira; Giuliano C. Clososki*

In the last twenty years, quinolines have received much attention due to their wide spectrum of attractive chemical and biological properties. This review describes recent strategies for obtaining structurally diverse quinolines as well relevant synthetic applications.

http://dx.doi.org/10.21577/0100-4042.20170701

Publicado online: janeiro 20, 2021
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Total access: 1220

Artigo de Contra Capa
Quim. Nova 2021, 44(5), 547-552

Avaliação da concentração total e da fração bioacessível de metais em amostras de casca de uva de cultivares tannat e cabernet sauvignon por MIP OES

Bruno JacobsI; Daisa Hakbart BonemannI; Camila Corrêa PereiraI; Alexander Ossanes de SouzaI; Ana Claudia Beduhn LuckowI; Meibel Teixeira LisboaI; Anderson Schwingel RibeiroI; Solange CadoreII; Adriane Medeiros NunesI,*

This study aims a better elemental characterization of grape skin samples based on the determination of the total concentration and the bioaccessible fraction of metals by MIP OES.

http://dx.doi.org/10.21577/0100-4042.20170709

Publicado online: fevereiro 3, 2021
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Total access: 1090

Artigo Quim. Nova 2021, 44(5), 543-546

 

Studies using HPLC-PDA in gabapentin n-derivatization reactions with 9-fluorenylmethyl chloroformate (FMOC-CL)

Emanoel HottesI; Carla Regina G. R. SantosII; Heloisa J. M. de SouzaII; Marco Edilson F. LimaI,*; Rosane N. CastroI


FMOC-OH is a degradation product of the derivatizing agent FMOC-Cl, which is widely used as N-protecting group of amino acids and related molecules, such as gabapentin. The formation of FMOC-OH is conditioned to the pH of the reaction medium. The results obtained allowed the optimization of the gabapentin derivatization reaction with FOMOC-Cl through the analysis of the products obtained by HPLC-PDA.

http://dx.doi.org/10.21577/0100-4042.20170719

Publicado online: fevereiro 18, 2021
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Total access: 1083

Quim. Nova 2021, 44(5), 553-560

 

Vidros automobilísticos como vestígios de cena de crime: uma abordagem multivariada

Caio H. P. RodriguesI,II; Aline T. BruniI,II,*


This work discusses automotive glasses as evidence in traffic forensic analysis. Chemometrics was used to evaluate Energy Dispersive X-ray Fluorescence data for different oxides concentrations according to the glasses' internal and external faces

http://dx.doi.org/10.21577/0100-4042.20170720

Publicado online: fevereiro 18, 2021
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Total access: 1156

Quim. Nova 2021, 44(5), 561-569

 

Oxidação anódica para descontaminação de um efluente contaminado com o herbicida glifosato utilizando anodo de diamante dopado com boro

Maycon D. de LimaI; Ana S. FajardoI,II; Elaine C. de M. SantosI; Aline M. Sales-SolanoI,III; Djalma R. da SilvaI; Carlos A. Martínez-HuitleI,*


Boron‐doped diamond electrodes can be used as a potential tool for environmental applications by employing an electrochemical cell to eliminate the organic pollutants from wastewater with electrogenerated oxidants.

http://dx.doi.org/10.21577/0100-4042.20170715

Publicado online: fevereiro 18, 2021
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Total access: 859

Quim. Nova 2021, 44(5), 570-574

 

FIRST REPORT ON CHEMICAL COMPOSITION AND BIOLOGICAL PROPERTIES OF VOLATILE OIL FROM Psidium firmum O. BERG LEAVES

Cassia Cristina FernandesI; Pietro ChrystalII; Alexandra Cristine PereiraII; Ana Carla ColliIII; Livia StenicoIII; Arthur Barcelos RibeiroIV; Iara Silva SquarisiIV; Ana Carolina Bolela Bovo CandidoIV; Denise Crispim TavaresIV; Lizandra Guidi MagalhãesIV; Antônio Eduardo Miller CrottiIII; Carlos Henrique Gomes MartinsV; Mayker Lazaro Dantas MirandaVI,*


Findings provided strong evidence of the promising potential of volatile oil from Psidium firmum fresh leaves as a nature-based antileishmanial, antibacterial and antiproliferative agent.

http://dx.doi.org/10.21577/0100-4042.20170710

Publicado online: fevereiro 3, 2021
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Total access: 1907

Revisão Quim. Nova 2021, 44(5), 575-583

 

Métodos de injeção da amostra em microssistemas eletroforéticos

Kemilly M. P. PinheiroI; Kariolanda C. A. RezendeI; Wendell K. T. ColtroI,II,*


One of the major challenges related to electrophoresis microsystems refers to the sample injection mode. In this way, this review covers the different electrokinetic and hydrodynamic approaches aiming to provide a complete overview for the readers.

http://dx.doi.org/10.21577/0100-4042.20170700

Publicado online: janeiro 20, 2021
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Total access: 784

Quim. Nova 2021, 44(5), 584-598

 

A química na avaliação do impacto à saúde humana diante da exposição aos pesticidas

Jéssyca Ferreira de Medeiros; Raphael D'Anna Acayaba; Cassiana Carolina Montagner*


Humans are constantly exposed to pesticides in several ways. Since most pesticides are not selective for target species, adverse effects can occur in non-target species, including humans.

http://dx.doi.org/10.21577/0100-4042.20170699

Publicado online: janeiro 20, 2021
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Total access: 1867

Nota Técnica Quim. Nova 2021, 44(5), 616-624

 

Aroma profile and phenolic content of Merlot red wines produced in high-altitude regions in Brazil

Stefany Grutzmann ArcariI,II,*; Vinícius CaliariIII,IV; Edson Luiz de SouzaIV; Helena Teixeira GodoyI,#


Merlot red wines from Água Doce, Campos Novos and Tangará presented borneol, high concentrations of 1-hexanol, 2-phenylethanol, β-damascenone, α-ionone and, syringic and vanillic acids, the last two effective in capturing the free radicals DPPH and ABTS.

http://dx.doi.org/10.21577/0100-4042.20170687

Publicado online: dezembro 8, 2020
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Total access: 932

Quim. Nova 2021, 44(5), 625-635

 

Detection of acid neutralizers in fraudulent milk: full validation of a classical qualitative method

Carina de Souza Gondim; Marina Penna e Palhares; Pedro Paulo Borges dos Santos; Roberto Cesar de Sousa; Roberto Gonçalves Junqueira; Scheilla Vitorino Carvalho de Souza*


The classical rosolic acid method for detection of neutralizing compounds in milk was fully validated for four adulterants, in official and modified versions. Modifications in the analytical procedure improved the method performance.

http://dx.doi.org/10.21577/0100-4042.20170703

Publicado online: janeiro 20, 2021
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Total access: 958

Educação Quim. Nova 2021, 44(5), 636-645

 

Relações sociedade-natureza em perspectiva: Educação Ambiental nas licenciaturas em química dos Institutos Federais no Brasil

Wesley F. MagelaI; Nyuara A. S. MesquitaII*


Considering the increase in the number of training courses for Chemistry teachers offered by Federal Institutes from the first decade of the 21st century, it is important to investigate the formative elements of these courses, such as Environmental Education.

http://dx.doi.org/10.21577/0100-4042.20170694

Publicado online: dezembro 15, 2020
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Total access: 942

Quim. Nova 2021, 44(5), 646-654

 

Basic concepts of self-organized phenomena in chemical systems

Leonardo Silva-Dias*


The BZ reaction is a typical oscillating reaction, which can spontaneously evolve to organized states under the influence of small perturbations. Such features make this reaction a suitable kinetic mechanism to theoretically study the emergence of oscillations, waves, and stationary patterns.

http://dx.doi.org/10.21577/0100-4042.20170684

Publicado online: dezembro 1, 2020
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Total access: 883

Quim. Nova 2021, 44(5), 655-658

 

Simultaneous spectrophotometric determination and classical least squares method: a simple experiment to introduce the concept of multivariate calibration

Jhonatas R. Carvalho; Larissa R. Lopes; Luciano N. Vidal; Poliana M. Santos*


All data produced in a measurement may contain useful information that can be employed to build a more robust and reliable calibration model, through multivariate analysis.

http://dx.doi.org/10.21577/0100-4042.20170686

Publicado online: dezembro 8, 2020
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Total access: 1243

Quim. Nova 2021, 44(5), 659-666

 

Carbonato de cálcio ou cálcio quelado? elucidando essa dúvida por meio de estudo de caso

Adriana Nori de Macedo; Mariana Ramos Almeida; Ana Luiza de Quadros*


A case study involving a question about calcium supplementation using calcium carbonate or calcium chelate.

http://dx.doi.org/10.21577/0100-4042.20170706

Publicado online: fevereiro 3, 2021
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Total access: 1382

Assuntos Gerais Quim. Nova 2021, 44(5), 667-672

 

Phytochemicals as potential antiviral agents in sars-cov-2 therapy: an update

Nerilson M. LimaI*; Teresinha de Jesus A. S. AndradeII; Kojo S. AcquahIII; Marcone A. L. de OliveiraI*; Kellyane F. GoisIV; Lis Cardoso M. MedeirosIV


This work describes some medicinal plant species, and phytochemicals and their derivatives, with promising antiviral potential against coronavirus, which could be explored as potential candidates for drug prototypes in the treatment of COVID-19.

http://dx.doi.org/10.21577/0100-4042.20170714

Publicado online: fevereiro 18, 2021
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Total access: 857

On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
Química Nova
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