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vol. 32, No. 7, 2021, p. 1301-1497

 

The last 15 years have been marked by intense research in feedstocks, catalysts and technologies for the production of biodiesel. The quality of biodiesel has also been the focus of attention through additives as well as the emission of pollutants from its use. Details are presented in the Review Biodiesel: An Overview II by Michelle J. C. Rezende, Ana Lúcia de Lima, Bárbara V. Silva, Claudio J. A. Mota, Ednildo A. Torres, Gisele O. da Rocha, Ingrid M. M. Cardozo, Kênia P. Costa, Lilian L. N. Guarieiro, Pedro A. P. Pereira, Sabrina Martinez and Jailson B. de Andrade on page 1301.


Cover Article
J. Braz. Chem. Soc. 2021, 32(7), 1301-1344

Biodiesel: An Overview II

Michelle J. C. Rezende ; Ana Lúcia de Lima; Bárbara V. Silva; Claudio J. A. Mota; Ednildo A. Torres; Gisele O. da Rocha; Ingrid M. M. Cardozo; Kênia P. Costa; Lilian L. N. Guarieiro; Pedro A. P. Pereira ; Sabrina Martinez; Jailson B. de Andrade

How to cite this article

The last 15 years have been marked by intense research in feedstocks, catalysts and technologies for the production of biodiesel. The quality of biodiesel has also been the focus of attention through additives as well as the emission of pollutants from its use. Details are presented in the Review Biodiesel: An Overview II by Michelle J. C. Rezende, Ana Lúcia de Lima, Bárbara V. Silva, Claudio J. A. Mota, Ednildo A. Torres, Gisele O. da Rocha, Ingrid M. M. Cardozo, Kênia P. Costa, Lilian L. N. Guarieiro, Pedro A. P. Pereira, Sabrina Martinez and Jailson B. de Andrade on page 1301.

https://dx.doi.org/10.21577/0103-5053.20210046

Published online: April 8, 2021
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Review J. Braz. Chem. Soc. 2021, 32(7), 1301-1344

Biodiesel: An Overview II

Michelle J. C. Rezende ; Ana Lúcia de Lima; Bárbara V. Silva; Claudio J. A. Mota; Ednildo A. Torres; Gisele O. da Rocha; Ingrid M. M. Cardozo; Kênia P. Costa; Lilian L. N. Guarieiro; Pedro A. P. Pereira ; Sabrina Martinez; Jailson B. de Andrade

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Worldwide use and advances in biodiesel research over the past 15 years are reported in this review.

https://dx.doi.org/10.21577/0103-5053.20210046

Published online: April 8, 2021

 

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Articles J. Braz. Chem. Soc. 2021, 32(7), 1345-1353

Adsorption of Calcium(II), Cadmium(II) and Copper(II) Ions from Water by Prepared Silicon-Aluminum-Zirconium Oxide Using Sol-Gel Process

Cristiano N. da Silva; Maiyara C. Prete; César R. T. Tarley; Júlio C. Afonso ; Emerson S. Ribeiro

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Ternary oxide silica-alumina-zirconia (SiO2/Al2O3/ZrO2) obtained by the sol-gel process was applied as novel adsorbent of ions in aqueous solution. Batch isotherms were performed using standard CuII, CdII and CaII solutions at variable pH and different concentrations. A real sample of produced water was also tested.

https://dx.doi.org/10.21577/0103-5053.20210032

Published online: March 5, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1354-1360

A Theoretical Antioxidant Mechanism for Cytoprotective Effect of p-Acetamide-Salicylate Derivatives against Free Radical Initiator AAPH in Human Erythrocytes

Valéria A. Barros; Glaécia A. N. Pereira; Sirlene S. B. Ota; Fernanda P. A. Melo; Ana Carolina S. P. S. de Jesus; Anderson B. Lima; Albérico B. F. da Silva; Rosivaldo S. Borges

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Aminophenol-salicylate derivatives show good cytoprotective effects. Acetaminophen is cytoprotective and salicylic acid has hemolytic activity. Low pKa or less antioxidant capacity can be involved.

https://dx.doi.org/10.21577/0103-5053.20210033

Published online: March 8, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1361-1372

Development of Analytical Method for Determination of Inorganic Constituents in Powder Refreshment Using Dilute Mineral Acids and Detection by ICP OES

Samir H. Santos; Silvânio S. L. Costa; Sidnei O. Souza; Karina S. Garcia; Sarah A. R. Soares; Carlos A. B. Garcia; Tarcísio S. Almeida; Rennan G. O. Araujo

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An analytical method for twenty-four inorganic constituent determination in powder refreshment by inductively coupled plasma optical emission spectroscopy (ICP OES) was developed.

https://dx.doi.org/10.21577/0103-5053.20210034

Published online: March 12, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1373-1380

Synthesis of Triazoles by Electro-Assisted Click Reaction Using a Copper Foil Electrode

Luceldi Carre-Rangel; Karla A. Espinoza; Mercedes T. Oropeza-Guzmán; Ignacio A. Rivero

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Electrochemical assistance in the click reaction provides a remarkable fast effect.

https://dx.doi.org/10.21577/0103-5053.20210035

Published online: March 12, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1381-1390

Essential Oils Obtained from Aerial Eugenia punicifolia Parts: Chemical Composition and Antiproliferative Potential Evidenced through Cell Cycle Arrest

Yan M. L. Fernandes; Julia V. S. Matos ; Carolina A. Lima; Angela M. Tardini; Flavio A. P. Viera; Jose G. S. Maia ;
Odair S. Monteiro; Giovanna B. Longato; Cláudia Q. Rocha

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Essential oils of the leaves of three Eugenia punicifolia specimens, from Maranhão State, Brazil, were characterized and evaluated in tumor cells.

https://dx.doi.org/10.21577/0103-5053.20210036

Published online: March 15, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1391-1395

Klein's Remdesivir-Nucleobase Synthesis Revisited: Chemoselective Cyanation of Pyrrol-2-carboxaldehyde

Juliana A. dos Santos; Vinícius R. D. Pereira; Adilson D. da Silva; Giovanni W. Amarante

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Three chemical steps route, including a highly chemoselective cyanation of pyrrol-2-carboxaldehyde, for the preparation of remdesivir's nucleobase is presented.

https://dx.doi.org/10.21577/0103-5053.20210037

Published online: March 18, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1396-1404

Utilization of the Corncob Agro-Industrial Residue as a Potential Adsorbent in the Biosorption of Bisphenol-A

Jhéssica C. S. Golveia ; Mariângela F. Santiago ; Leandro B. Silva ; Luiza C. Campos ; Fernando Schimidt

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Utilization of the corncob agro-industrial residue as an alternative adsorbent in the efficient removal of bisphenol-A.

https://dx.doi.org/10.21577/0103-5053.20210038

Published online: March 22, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1405-1412

Development of a TD-NMR Method to Monitor Brazil Nuts Oil Content: A Green and Low-Cost Based Approach

Úrsula A. Ribeiro; Leonardo C. Queiroz; Agide G. Marassi ; André S. Carvalho; Gabriel A. Barros; Daniel M. Consalter;
Jaqueline A. Bezerra ; Alan D. C. Santos ; Luiz Alberto Colnago; Marcos B. Machado

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A time-domain 1H nuclear magnetic resonance spectroscopy (TD-NMR) method was developed and validated (DOQ-CGCRE-008) for determining Brazil nuts oil content. Statistically similar contents were found in two different labs (66.93 ± 4.69 and 70.13 ± 4.15%). Such approach can be embraced as a reference method for in situ monitoring of the oil contents.

https://dx.doi.org/10.21577/0103-5053.20210039

Published online: March 23, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1413-1423

Design, Synthesis and Antitubercular Activity of 2-(Benzylthio)-1H-benzo[d]imidazoles

Raoní S. Rambo; Etienne C. Waldow; Bruno L. Abaddi; Maiele D. Silveira; Adilio S. Dadda; Nathalia Sperotto; Cristiano V. Bizarro; Luiz Augusto Basso; Pablo Machado

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A series of 2-(benzylthio)-1H-benzo[d]imidazoles was synthesized and evaluated as in vitro inhibitors of Mycobacterium tuberculosis growth.

https://dx.doi.org/10.21577/0103-5053.20210040

Published online: March 30, 2021

 

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Total access: 865


J. Braz. Chem. Soc. 2021, 32(7), 1424-1434

Anti-Inflammatory Meroterpenoids of Cordia glazioviana (Boraginaceae)

Ana Karine O. Silva; Francisco C. L. Pinto; Kirley M. Canuto; Raimundo Braz-Filho; Rose Anny C. Silva; Flávia A. Santos; Norberto K. V. Monteiro; Edilberto R. Silveira; Otília D. L. Pessoa

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The phytochemical reinvestigation from the heartwood extract of Cordia glazioviana (Boraginaceae) led to the isolation of five compounds previously undescribed.

https://dx.doi.org/10.21577/0103-5053.20210041

Published online: March 31, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1435-1446

A Systematic Pipeline to Enhance the Fecal Metabolome Coverage by LC-HRMS

Marina A. Alves; Ana Carolina R. da Silva; Clarisse L. Torres; Lana R. de Almeida; Ana Maria O. Mastella;
Ricardo M. Borges; Rafael Garrett

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A comprehensive profile of the fecal metabolome was achieved by the combination of extractions and liquid chromatography-high resolution mass spectrometry (LC-HRMS) methods.

https://dx.doi.org/10.21577/0103-5053.20210042

Published online: April 5, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1447-1455

Through-Bond and Through-Space Interactions in [2,2]Cyclophanes

Sérgio E. Galembeck; Renato P. Orenha; Rafael M. Madeira; Letícia B. Peixoto; Renato L. T. Parreira

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Cyclophanes and toluene dimers behave similarly and the through space (ts), are more important than the through bond (tb) interactions.

https://dx.doi.org/10.21577/0103-5053.20210043

Published online: April 5, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1456-1466

Electrochemical Determination of Trifluralin Herbicide Using Silver Solid Amalgam Electrode: Application in Fresh Food Samples

Danielle Gonçalves Filho; Djenaine de Souza

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A simple, sensitive, fast and nontoxic electroanalytical methodology for the trifluralin herbicide determination in fresh food samples was developed using a polished silver solid amalgam electrode with square wave voltammetry.

https://dx.doi.org/10.21577/0103-5053.20210044

Published online: April 5, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1467-1475

Development of a Simple and Fast Procedure Based on Acid Dilution for Determination of Macro and Microelements in Guarana-Based Beverages by ICP OES

Vinnícius Henrique C. da Silva ; André Luiz S. da Silva Jr. ; Herick M. Santos ; Ivon P. Lôbo; Marcos A. Bezerra ; Raildo M. de Jesus

How to cite this article

 

Development and optimization of methodology for determination of macro and micronutrients in guarana-based drinks.

https://dx.doi.org/10.21577/0103-5053.20210045

Published online: April 6, 2021

 

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J. Braz. Chem. Soc. 2021, 32(7), 1476-1490

Molecular Modeling and Chemical Synthesis of New Safrol Oxime Ether Derivatives

Mariana G. R. Silva ; Marcia P. Veloso; Thaynan A. B. Chagas; Mirian M. Cordeiro; Levy B. Alves; Paloma A. G. Monti; Ruth V. Souza

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Synthesis of oxime ethers from safrol and studies of molecular modeling with new molecules against the enzymes rCPB2.8 and CRK3 of Leishmania.

https://dx.doi.org/10.21577/0103-5053.20210047

Published online: April 8, 2021

 

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Total access: 708


J. Braz. Chem. Soc. 2021, 32(7), 1491-1497

Allyl Dibenzoylmethane Derivative: Antimelanoma Activity and Study of Its Molecular Mechanism of Interaction with DNA

Jefferson V. P. B. Baeta; Ulisses M. S. Andrade; Rayane M. Oliveira; Leandro Oliveira; Anésia A. Santos; Gaspar Diaz-Muñoz; Márcio S. Rocha; Marisa A. N. Diaz

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This study describes the DNA (deoxyribonucleic acid) interaction with the allyl dibenzoylmethane derivative (1,3-diphenyl-2-allyl-1,3-propanedione, DPAP) that presents antitumor activity against B16F10 and Tm5 melanoma cells.

https://dx.doi.org/10.21577/0103-5053.20210048

Published online: April 8, 2021

 

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