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vol. 35, No. 5, 2024, p. 1-17

 

The main highlight of this work lies in the synthesis of iron nanoparticles through a green process using Eucalyptus gradis leaf extract as a reducing and stabilizing agent. For the first time, this type of material has shown mimetic behavior as a nanoenzyme in the oxidation reaction of o-phenylenediamine in the presence of hydrogen peroxide, establishing an indirect method for peroxide determination. Details are presented in the Article Green Synthesis of Iron Nanozymes Using Eucalyptus grandis Extract and Their Application as Peroxidase-Like Catalysts for H2O2 Quantification by Luísa F. M. Mazzini, Guilherme Mateus Bousada, Gustavo A. Puiatti and Renata P. L. Moreira on e-20230171.


Cover Article
J. Braz. Chem. Soc. 2024, 35(5), 1-11

Green Synthesis of Iron Nanozymes Using Eucalyptus grandis Extract and Their Application as Peroxidase-Like Catalysts for H2O2 Quantification

Luísa F. M. Mazzini; Guilherme Mateus Bousada; Gustavo A. Puiatti; Renata P. L. Moreira

How to cite this article

The main highlight of this work lies in the synthesis of iron nanoparticles through a green process using Eucalyptus gradis leaf extract as a reducing and stabilizing agent. For the first time, this type of material has shown mimetic behavior as a nanoenzyme in the oxidation reaction of o-phenylenediamine in the presence of hydrogen peroxide, establishing an indirect method for peroxide determination. Details are presented in the Article Green Synthesis of Iron Nanozymes Using Eucalyptus grandis Extract and Their Application as Peroxidase-Like Catalysts for H2O2 Quantification by Luísa F. M. Mazzini, Guilherme Mateus Bousada, Gustavo A. Puiatti and Renata P. L. Moreira on e-20230171.

https://dx.doi.org/10.21577/0103-5053.20230171

Published online: October 26, 2023
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Articles J. Braz. Chem. Soc. 2024, 35(5), 1-7

Toxicological Effects of Synthesized Pyrazoline Derivative 4-(3-(4-Bromophenyl))- 5-(3,4-dimethoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl) Benzenesulfonamide, Compound B8 on Antioxidant Enzymes and Hematological Parameters of Rainbow Trout Alevins (Oncorhynchus mykiss)

Dilan O. Ozgun ; Ahmed O. Maslat; Khalid M. Abu Khadra ; Telat Yanik ; Gonca Alak; Arzu Ucar ; Halise I. Gul; Esat M. Kocaman; Veysel Parlak; Rana Almuhur ; Muhammed Atamanalp

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Effects of synthesized pyrazoline derivative, 4-(3-(4-bromophenyl))-5-(3,4- dimethoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl) benzene sulfonamide (compound B8), on antioxidant enzymes and hematological parameters of rainbow trout alevins (Oncorhynchus mykiss).

https://dx.doi.org/10.21577/0103-5053.20230161

Published online: September 28, 2023

 

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J. Braz. Chem. Soc. 2024, 35(5), 1-13

Effect of the Synthesis Parameters on the Physicochemical Properties and Photocatalytic Performance of Nb2O5 to Water Treatment and H2 Production

Marlete A. Souza ; Marcela P. Bernardo ; Higor O. Alves ; Cleiton P. M. Silva; Antônio Otávio T. Patrocínio ; Osmando F. Lopes

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It was developed Nb2O5 samples with a high photoactivity for organic pollutant photodegradation and H2 production.

https://dx.doi.org/10.21577/0103-5053.20230169

Published online: October 20, 2023

 

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J. Braz. Chem. Soc. 2024, 35(5), 1-11

Green Synthesis of Iron Nanozymes Using Eucalyptus grandis Extract and Their Application as Peroxidase-Like Catalysts for H2O2 Quantification

Luísa F. M. Mazzini; Guilherme Mateus Bousada; Gustavo A. Puiatti; Renata P. L. Moreira

How to cite this article

 

Iron nanoparticles synthesized by green process, using Eucalyptus grandis leaf extract, for use as a peroxidase-like catalyst for H2O2 quantification.

https://dx.doi.org/10.21577/0103-5053.20230171

Published online: October 26, 2023

 

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Total access: 1694


J. Braz. Chem. Soc. 2024, 35(5), 1-8

UPLC-QTOF/MS-MS Based Profiling Coupled to Antioxidant Activity for Evaluation of Unripe Acerola Fruits from Different Clones

Amanda G. Silveira; Laíza B. Ribeiro; Lorena M. F. Sampaio; Amélia R. N. Lima; Elenilson G. Alves Filho; Paulo R. V. Ribeiro; Kirley M. Canuto; Carlos F. H. Moura; Jesus F. Ayala-Zavala; Luciana S. Oliveira

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Scheme for characterization of acerola clones, from harvesting, pulping, and drying (lyophilization) to injection of samples into an ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF/MS-MS) for analysis of the phenolic profile and consequent antioxidant action, followed by chemometric analysis to better understand the physiology of the fruit.

https://dx.doi.org/10.21577/0103-5053.20230172

Published online: October 27, 2023

 

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J. Braz. Chem. Soc. 2024, 35(5), 1-17

In silico Analysis of Natural Products from Brazilian Biodiversity in COVID-19 Treatment: NuBBE Database against SARS-CoV-2 Papain-Like Protease

Caio Felipe A. R. Cheohen; Maria Eduarda A. Esteves; Vinnícius M. S. Gomes; Diego Allonso; Manuela L. da Silva

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Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products Database (NuBBEDB) against papain-like protease (PLpro) in virtual screening. Twenty-one molecules were analyzed with absorption, distribution, metabolism, excretion, and toxicity (ADMET) and three raputindoles were analyzed by molecular dynamics.

https://dx.doi.org/10.21577/0103-5053.20230173

Published online: November 1, 2023

 

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J. Braz. Chem. Soc. 2024, 35(5), 1-8

Prediction Model of Nicotine and Glycerol in Reconstituted Tobacco Leaves Based on Support Vector Machine Algorithm

Qifu Yang; Ma Kun; Liang Ying; Wu Jiaquan; Zhang Xinyu; Shuangyan Yang

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This paper presents a method for quantifying the nicotine (NIC) and glycerol (VG) content in reconstituted tobacco using a handheld near-infrared spectrometer to capture spectral data from tobacco leaves.

https://dx.doi.org/10.21577/0103-5053.20230174

Published online: November 1, 2023

 

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Total access: 564


J. Braz. Chem. Soc. 2024, 35(5), 1-12

Synthesis and Characterization of Polyester Derived from Glycerol and Its Application as an Adhesive on Different Adherents

Érica L. de Oliveira; Maísa B. Costa; Luciana M. Ramos; Olacir A. Araújo

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Polyester derived from glycerol, a by-product of biodiesel, applied as an adhesive on different adherents.

https://dx.doi.org/10.21577/0103-5053.20230175

Published online: November 1, 2023

 

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Total access: 683


J. Braz. Chem. Soc. 2024, 35(5), 1-15

Evaluation of Total Concentrations and Bioaccessible Fractions of Essential and Toxic Elements in Amaranth, Quinoa and Chia by MIP OES

Caroline D. Clasen ; Sandy A. Silva; Kaiane Q. Ribeiro; Anderson S. Ribeiro ; Mariana A. Vieira

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The bioaccessible fractions of Al, B, Ba, Cu, Fe, K, Mg, Mn, Ni, V and Zn were determined in amaranth, quinoa and chia samples by microwave-induced plasma optical emission spectrometry (MIP OES).

https://dx.doi.org/10.21577/0103-5053.20230176

Published online: November 6, 2023

 

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Total access: 617


J. Braz. Chem. Soc. 2024, 35(5), 1-14

Aminoguanidine Hydrazone Derivatives: The Antioxidant, Antineoplastic Profile, and Interaction with ctDNA Studies

Ari S. Guimarães; Woodland S. Oliveira; Aline R. S. Araújo; Mary Ann Foglio ; Pedro G. V. Aquino; João X. de Araújo-Júnior ; Martine Schmitt; Ana Lúcia T. G. Ruiz; Isis M. Figueiredo; Josué C. C. Santos

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Aminoguanidine hydrazone derivatives were synthesized and had their biological activities and biophysical studies carried out, highlighting compound AGH-3.

https://dx.doi.org/10.21577/0103-5053.20230177

Published online: November 7, 2023

 

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Total access: 712


J. Braz. Chem. Soc. 2024, 35(5), 1-10

Is Natural Solar Photolysis Effective for the Removal of Antibiotics and Pathogens from Waste Stabilization Pond?

Karla V. L. Lima ; Jany H. F. de Jesus ; João L. Bronzel Junior; Raquel F. P. Nogueira

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This study explored natural solar photolysis of sulfamethoxazole and trimethoprim in Waste Stabilization Pond samples, considering pH, matrix compounds, and exposure time. It also assessed pathogen elimination and photoproduct formation during the process.

https://dx.doi.org/10.21577/0103-5053.20230178

Published online: November 9, 2023

 

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Total access: 812


J. Braz. Chem. Soc. 2024, 35(5), 1-9

A Simple and Sensitive Non Modified Acetylene Black-Polyurethane Composite Electrode in the Determination of Bisphenol-A in Water Samples

Rafael da Silva; Priscila Cervini ; Éder T. G. Cavalheiro

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A solid composite electrode based on acetylene black and polyurethane resin (ABPUE) without modifier was evaluated regarding its performance in the voltammetric determination of bisphenol-A in water samples.

https://dx.doi.org/10.21577/0103-5053.20230179

Published online: November 9, 2023

 

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Total access: 566


J. Braz. Chem. Soc. 2024, 35(5), 1-14

Experimental Design Modelling and Optimization of the Intercalation of Levofloxacin and Salicylic Acid into the Structure of ZnAl-LDH by Response Surface Method: in vitro Study of Release Kinetics, Antibacterial and Anti-Inflammatory Activities

Ngo T. T. Vy; Dang N. N. Khanh; Le H. Khoa; Nguyen T. Phat; Nguyen Q. Thang; Le H. Trung; Nguyen T. H. Nhu; Doan T. M. Phuong; Nguyen T. K. Phuong

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Nano zinc-aluminium-layered double hydroxide greatly controls the release rate of levofloxacin (LEV) and salicylic acid (SAL), allowing to maintain adequate drug levels for a certain time, reducing dosing frequency but still achieving the desired effect.

https://dx.doi.org/10.21577/0103-5053.20230180

Published online: November 9, 2023

 

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Total access: 933


J. Braz. Chem. Soc. 2024, 35(5), 1-8

Identification of Disease Type of Tobacco Leaves Based on Near Infrared Spectroscopy and Convolutional Neural Network

Liang Ying ; Ma Kun; Zhang Xinyu; Yang Qifu ; Wu Jiaquan; Yang Shuangyan

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The types of tobacco leaf disease are identified rapidly, non-destructively, and accurately, based on a handheld near-infrared spectrometer and convolutional neural network algorithm.

https://dx.doi.org/10.21577/0103-5053.20230181

Published online: November 10, 2023

 

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Total access: 579


J. Braz. Chem. Soc. 2024, 35(5), 1-16

Acidic and Basic Functionalized Biochar from Licuri Nutshell for Methylene Blue Removal: A More Sustainable Solution for Wastewater Treatment

Gustavo F. Bitencourt; Letícia F. L. Machado; Bruno S. Peixoto ; Laís F. de Castro ; Márcia Cristina C. Veloso; Gilberto A. Romeiro; Thiago M. Lima

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In this work, the licuri nutshell residue was transformed into a modified biochar, which showed six times more efficiency than commercial activated carbon towards methylene blue removal.

https://dx.doi.org/10.21577/0103-5053.20230182

Published online: November 14, 2023

 

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Total access: 903


J. Braz. Chem. Soc. 2024, 35(5), 1-12

Biodegradation of the Antibiotic Doxycycline by Bacteria from the Gastrointestinal Tract of Cucurbit Beetles (Diabrotica speciosa)

Karen Susana M. Madera; Luis Guillermo C. Durango ; Orfa Ines C. Martínez; Maria Fátima G. F. da Silva ; João B. Fernandes; Moacir R. Forim

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Biodegradation of doxycycline by gastrointestinal bacteria isolated from the insect pest Diabrotica speciosa.

https://dx.doi.org/10.21577/0103-5053.20230183

Published online: November 16, 2023

 

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J. Braz. Chem. Soc. 2024, 35(5), 1-14

Synthesis of SiO2/ZnO/Fe2O3/ZnFe2O4 from Spent Alkaline Batteries and Mining Tailings Applied as a Photocatalyst and Pseudocapacitor

Luma B. Magnago ; Fernando S. Betim ; Jenifer R. Almeida ; Mayra N. Moura ; Edson L. D. Coelho ; Vitor M. Leal ;
Sandra A. D. Ferreira; Maria F. F. Lelis ; Marcos B. J. G. Freitas

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A mixed oxide (SiO2/ZnO/Fe2O3/ZnFe2O4) was prepared using recycled alkaline batteries and mining tailings and applied as a photocatalyst under solar irradiation and as a pseudocapacitor.

https://dx.doi.org/10.21577/0103-5053.20230184

Published online: November 16, 2023

 

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Total access: 1027


J. Braz. Chem. Soc. 2024, 35(5), 1-7

Exploring Whole Cells of Rhizopus oryzae for Efficient Synthesis of Emollient Esters: Bioesters for Cosmetics

Arthur O. Preto ; Willian S. M. Reis ; Ana K. F. de Carvalho ; Ernandes B. Pereira

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Use and production of intact lipolytic cells of Rhizopus oryzae in the production of emollient esters for application in the cosmetics industry.

https://dx.doi.org/10.21577/0103-5053.20230185

Published online: November 17, 2023

 

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Total access: 819

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