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Autores: A partir do fascículo 39/9 a revista Química Nova adotou a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.

vol. 37, No. 6, 2014, p. 929-1109

 

Submission procedures for OPEN ACCESS

The Board of Directors of the Sociedade Brasileira de Química-SBQ (publisher of the Química Nova-QN) decided that QN will adopt the full open access format in which authors are required to cover part of the publication costs for their articles. See more...



Artigo de Capa
Quim. Nova 2014, 37(6), 1000-1003

Simple method for mass production of polypyrrole/carbon nanotubes hybrid artificial muscle

Marcelo R. dos Santos; Helinando P. de Oliveira*

Interfacial polymerization represents a simple and low cost technique for the preparation of electromechanical actuators based on polypyrrole-carbon nanotubes composite.

http://dx.doi.org/10.5935/0100-4042.20140161

Publicado online: junho 17, 2014
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Editorial Quim. Nova 2014, 37(6), 929-930

 

37ª Reunião Anual da Sociedade Brasileira de Química

Aldo J. G. Zarbin


http://dx.doi.org/10.5935/0100-4042.20140177

Artigos Quim. Nova 2014, 37(6), 931-936

 

Nanocompósito de polpa de mamão e nanopartículas de quitosana para aplicação em embalagens

Marcos V. LoreviceI,II; Marcia R. de MouraIII,*; Luiz H. C. MattosoII


Novel packagings produced with polysaccharides and papaya's puree, improved with chitosan nanoparticles. A way to decrease environmental impact caused by disposal packaging that are difficult to degrade.

http://dx.doi.org/10.5935/0100-4042.20140174

Publicado online: junho 30, 2014
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Quim. Nova 2014, 37(6), 937-942

 

Starch/poly (butylene adipate-co-terephthalate)/montmorillonite films produced by blow extrusion

Rodrigo A. L. SantosI; Carmen M. O. MullerI; Maria V. E. GrossmannI; Suzana MaliII,*; Fabio YamashitaI


Biodegradable films produced by blow-extrusion of starch, PBAT, and nanoclay. The blended materials were initially pelletized in a single-screw pilot extruder, followed by subsequent extrusion of the pellets to form films.

http://dx.doi.org/10.5935/0100-4042.20140170

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 943-949

 

Influência das substâncias húmicas de sedimentos na biodisponibilidade de metais para o sistema aquático

Wander Gustavo BoteroI,*; Shenia de Oliveira SouzaI; Oseas Silva SantosI; Luciana Camargo de OliveiraII; Cristine Bastos do AmaranteIII


The sediment humic substances showed influences the complexation of metals by influencing their bioavailability for the aquatic environment.

http://dx.doi.org/10.5935/0100-4042.20140164

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 950-955

 

Adsorção de alfa-lactalbumina do soro de leite em hidroxiapatita: efeito do pH e da temperatura e análise termodinâmica

Rita de Cássia Superbi de SousaI,*; Jane Sélia dos Reis CoimbraII; Liliana de Luca Xavier AugustoI; Leomir Samuel Tormen ReisI


Steps for obtaining the adsorption isotherms of α-la in hydroxyapatite and their values of qm as a function of different pH and temperature values.

http://dx.doi.org/10.5935/0100-4042.20140149

Publicado online: junho 5, 2014
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Quim. Nova 2014, 37(6), 956-963

 

Solo contaminado com cádmio: extratibilidade do metal e cinética química de degradação da matéria orgânica de torta de filtro

Lucia Pittol FirmeI,*; Felipe Carlos Alvarez VillanuevaI; Antonio Arnaldo RodellaII


The chemical kinetics of sugarcane filter cake (FC) organic matter degradation in soil with different levels of cadmium (Cd) contamination was studied by quantifying CO2 emitted during 72 days of incubation. The total CO2 emitted from FC decreased with Cd contamination.

http://dx.doi.org/10.5935/0100-4042.20140173

Publicado online: junho 30, 2014
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Quim. Nova 2014, 37(6), 964-968

 

Determinação de bromo e iodo em alga marinha comestível por ICP-MS após decomposição por combustão iniciada por micro-ondas

Marcia Foster MeskoI,*; Isis Gonçalves TorallesI; Marcelo Guerreiro CrizelI; Vanize Caldeira CostaI; Natanael Rodrigo Xavier PiresII; Claudio Martin Pereira de PereiraI; Rochele Sogari PicolotoIII; Paola Azevedo MelloIII


A method based on microwave-induced combustion (MIC) was applied for decomposition of different edible seaweed for subsequent determination of bromine and iodine by inductively coupled plasma mass spectrometry (ICP-MS).

http://dx.doi.org/10.5935/0100-4042.20140156

Publicado online: junho 11, 2014
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Quim. Nova 2014, 37(6), 969-976

 

Imobilização de lipase por encapsulação em sílica aerogel

Anderson dos S. BarbosaI; Matheus Albuquerque de O. SilvaI; Nayara B. CarvalhoI; Silvana MattediII; Miguel Angel IglesiasII; Alini T. FricksI; Álvaro S. LimaI; Elton FranceschiI; Cleide M. F. SoaresI,*


Lipase from Burkholderia cepacia immobilized by encapsulation in silica matrix modified with protic ionic liquid and dried in pressurized media (aerogel) shows attractive potential for industrial applications in the hydrolysis of vegetable oils.

http://dx.doi.org/10.5935/0100-4042.20140155

Publicado online: junho 11, 2014
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Quim. Nova 2014, 37(6), 977-981

 

Volatile constituents of Aristolochia trilobata L. (Aristolochiaceae): a rich source of sulcatyl acetate

Darlisson de Alexandria SantosI; Péricles Barreto AlvesI,*; Emmanoel Vilaça CostaI; Clovis Roberto Pereira FrancoII; Angelita NepelIII; Andersson BarisonIII


Sulcatyl acetate (6-methyl-5-hepten-2-yl acetate) was isolated for the first time from Aristilochia trilobata and identified as the major component of volatile compounds.

http://dx.doi.org/10.5935/0100-4042.20140163

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 982-988

 

Desenvolvimento de tecnologia de pré-polímeros na síntese de poliuretanos empregados em combustíveis sólidos

Marcelo Clemente*; Roberta J. Rocha; Koshun Iha; José A. F. F. Rocco


Polyurethane pre-polymer technology applied in the aerospace area. Used as a binder like a solid fuel in hybrid propulsion. Soybean-based polyol was the best starting raw material in the synthesis of polyurethane network.

http://dx.doi.org/10.5935/0100-4042.20140154

Publicado online: junho 11, 2014
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Quim. Nova 2014, 37(6), 989-995

 

Synthesis, characterization, and biological activity of a new class of dialkylphosphorylhydrazone derivatives of isatin

Letícia Silotti ZampirolliI; Marcela Jacques de LemosI; Vinícius Tomaz GonçalvesI,II; Marco Andre Alves de SouzaI; Sonia Regina de SouzaI; Victor Marcos RumjanekI; João Batista Neves DaCostaI,*


This figure shows the growth inhibition of Rhizoctonia solani by phosphorohydrazidic acid N'-[1,2-dihydro-1-methyl-2-oxo-3H-indol-3-ylidene]-dibutyl ester (12).

http://dx.doi.org/10.5935/0100-4042.20140162

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 996-999

 

Desenvolvimento de um método para a determinação de tioconazol associado a nanocápsulas poliméricas por cromatografia líquida

Andréia P. G. Härter; Mariana H. Motta; Júlia G. de Barros; Roseane F. Ribeiro; Andréa I. H. Adams; Scheila R. Schaffazick; Cristiane de B. da Silva*


In this work, a rapid and simple HPLC method has been developed and validated for the assay of tioconazol in polymeric nanocapsule suspensions. The method showed good results with respect to specificity, linearity, precision, accuracy, and robustness.

http://dx.doi.org/10.5935/0100-4042.20140153

Publicado online: junho 11, 2014
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Quim. Nova 2014, 37(6), 1004-1009

 

Synthesis and evaluation of octocrylene-inspired compounds for UV-filter activity

Hudson C. PoloniniI; Rosângela S. LopesII; Adilson BeatrizII; Roberto S. GomesII; Adriano O. SilvaII; Ricardo V. de LimaII; Gláucia. A. NunesII; Marcos Antônio F. BrandãoI; Nádia R. B. RaposoI; Dênis P. de LimaII,*


Compounds 4, 5, and 7 showed the best protection against UVB sunrays, while compounds 5, 6, and 7 presented the best results for protection from UVA, so compound 7 had the most balanced protection.

http://dx.doi.org/10.5935/0100-4042.20140160

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 1010-1014

 

Terpenoides e cumarinas de Jatropha ribifolia (Pohl) Baill

Pedro Henrique Jataí BatistaI; José Roberto M. de AndradeI; Taynara Simão MatosI; Thiciana da Silva SousaI; Francisco das Chagas L. PintoI; Edilberto Rocha SilveiraI; Maria Iracema B. LoiolaII; Otilia D. Loiola PessoaI,*


Eight compounds, including terpenoids (jatrophone, hydroxyjatrophone, 6-hydroxycyperene, cabraleadiol monoacetyl, and cabraleadiol) and coumarins (fraxetin, fraxidin, and isofraxidin), were isolated from Jatropha ribifolia (Euphorbiaceae).

http://dx.doi.org/10.5935/0100-4042.20140172

Publicado online: junho 30, 2014
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Quim. Nova 2014, 37(6), 1015-1021

 

In vitro radical-scavenging activity, toxicity against A. salina, and NMR profiles of extracts of lichens collected from Brazil and Antarctica

Luciana M. RavagliaI; Kerolayne GonçalvesI; Nathália Mitsuko OyamaI; Roberta Gomes CoelhoI; Adriano A. SpielmannII; Neli K. HondaI,*


Extracts of lichens collected from Brazil and Antarctica were evaluated for their 2,2'-diphenyl-1-picrylhydrazyl (DPPH) free-radical scavenging activity and for their toxicity in Artemia salina bioassay. The composition of the extracts was determined using TLC and NMR, leading to the identification of nine compounds.

http://dx.doi.org/10.5935/0100-4042.20140159

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 1022-1027

 

Epoxidação do β-cariofileno com lipases imobilizadas em gel de ágar

Jaqueline M. R. da Silva; Maria da Graça Nascimento*


Lipases from various sources were immobilized in agar gel and the system used as a catalyst in the chemo-enzymatic epoxidation of β-caryophyllene under mild reaction.

http://dx.doi.org/10.5935/0100-4042.20140171

Publicado online: junho 30, 2014
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Revisão Quim. Nova 2014, 37(6), 1028-1036

 

Monitorando atividades enzimáticas com sondas fluorogênicas

Caroline da Costa Silva Gonçalves; Anita Jocelyne Marsaioli*


Latent fluorogenic probes are chemical tools for the detection and understanding of enzymatic activities, providing real-time clues about complex biological processes.

http://dx.doi.org/10.5935/0100-4042.20140142

Publicado online: maio 8, 2014
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Quim. Nova 2014, 37(6), 1037-1046

 

A química e toxicidade dos corantes de cabelo

Ricardo A. G. de OliveiraI; Thalita B. ZanoniII; Guilherme G. BessegatoI; Danielle P. OliveiraII; Gisela A. UmbuzeiroIII; Maria Valnice B. ZanoniI,*


Reaction using the primary intermediate (p-phenyldiamine) and the coupler (resorcinol) in the presence of hydrogen peroxide, resulting in the formation of the dye Idoaniline, of red color.

http://dx.doi.org/10.5935/0100-4042.20140143

Publicado online: maio 8, 2014
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Quim. Nova 2014, 37(6), 1047-1057

 

Super/subcritical fluid chromatography with packed columns: state of the art and applications

Carla Grazieli Azevedo da Silva*; Carol H. Collins


Separations using super/subcritical fluid chromatography (SFC) with packed columns have been re-discovered and explored in recent years. SFC with the use of CO2 and modifiers (5-50%) have been providing fast, efficient and greener separations.

http://dx.doi.org/10.5935/0100-4042.20140158

Publicado online: junho 11, 2014
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Nota Técnica Quim. Nova 2014, 37(6), 1058-1062

 

Inertization of small-scale chemical wastes using iron phosphate glass

João P. GobboI; Dalva L. A. de FariaI,*; José R. MartinelliII


The immobilization of heavy-metal wastes in iron phosphate glass decreases their release rate into the environment and constitutes an option for the management of hazardous metal residues produced on a small scale.

http://dx.doi.org/10.5935/0100-4042.20140175

Publicado online: junho 30, 2014
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Quim. Nova 2014, 37(6), 1063-1066

 

Method for determining the photocatalytic potential of Portland cement mortar containing TiO2 for decomposing the pollutant nitrogen monoxide

Marcelle M. BonatoI; Mariana O. G. P. BragançaII; Kleber F. PortellaII,*; Mateus E. VieiraI; Eliseu EsmanhotoII; Dailton P. CerqueiraIII; Jeannette C. M. dos SantosIII


Photocatalytic decomposition of NOx pollutants by mortars containing TiO2 nanoparticles.

http://dx.doi.org/10.5935/0100-4042.20140167

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 1067-1071

 

Determinação simultânea de carbamazepina, fenitoína e fenobarbital em sangue seco em papel por cromatografia líquida de alta eficiência

Gabriela Martins Silva de Lima; Roberta Zilles Hahn; Cristina Rama; Liliane Rhoden; Paulina Hidalgo; Cleber Álvares da Silva; Marina Venzon Antunes; Rafael Linden*


The antiepileptic drugs phenobarbital, phenytoin and carbamazepina were extracted from a single blood spot on paper and simultaneously determined by HPLC-DAD

http://dx.doi.org/10.5935/0100-4042.20140166

Publicado online: junho 17, 2014
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Educação Quim. Nova 2014, 37(6), 1072-1077

 

Diretrizes para a formação de professores da educação básica em interface com a Licenciatura em Química: em contexto as possibilidades formativas

Nyuara Araújo da Silva Mesquita*; Márlon Herbert Flora Barbosa Soares


The improvement in chemistry teacher training involves discussions that interrelate educational policies, supervised stage, and chemistry teaching in undergraduate courses in Brazilian context.

http://dx.doi.org/10.5935/0100-4042.20140169

Publicado online: junho 17, 2014
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Quim. Nova 2014, 37(6), 1078-1084

 

Construção de eletrodo de grafite retirado de pilha comum: aplicações didáticas

José Augusto Fragale Baio; Luiz Antônio Ramos; Éder Tadeu Gomes Cavalheiro*


Voltammetric electrodes were prepared using recycled graphite obtained from exhausted commercial 1.5 V batteries and its application in electroanalysis with didactic purposes is described in several simple laboratory experiments.

http://dx.doi.org/10.5935/0100-4042.20140151

Publicado online: junho 5, 2014
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Quim. Nova 2014, 37(6), 1085-1093

 

Avaliação da "microverdura" de sínteses com a estrela verde

Rita C. C. DuarteI; Maria Gabriela T. C. RibeiroI,*; Adélio A. S. C. MachadoII


The separate evaluation of the steps of the synthesis (reaction, isolation and purification) for several protocols with the green star (GS) allows reaching an optimized protocol from information on the greenness of each step.

http://dx.doi.org/10.5935/0100-4042.20140168

Publicado online: junho 17, 2014
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Assuntos Gerais Quim. Nova 2014, 37(6), 1094-1109

 

Bateria de métricas para avaliação da verdura material de reações de síntese

Adélio A. S. C. Machado*


A battery of three hierachized metrics (atomic economy, AE, reaction mass efficiency, RME, and mass intensity, MI) is presented for evaluation of the material greenness of synthesis reactions, which involves two components: AE and RME evaluate the atomic greenness (incorporation in the product of the atoms from reagents) and MI evaluates the global massic greenness.

http://dx.doi.org/10.5935/0100-4042.20140152

Publicado online: junho 5, 2014
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