JBCS



1:49, seg mar 27











Autores: informamos que, a partir do próximo fascículo (39/9), a revista Química Nova adotará a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.

vol. 38, No. 9, 2015, p. 1139-1252

 

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 2015, 38(9), 1140-1147

Nanocristais de celulose a partir de celulose bacteriana

Lais R. LimaI; Daniele B. SantosI; Molíria V. SantosI; Hernane S. BarudI,II,*; Mariana A. HenriqueIII; Daniel PasquiniIII; Edison PecoraroI; Sidney J. L. RibeiroI

A suspension of nanocrystals was obtained by acid hydrolysis of bacterial cellulose. After evaporation of water, nanocrystals films were formed with iridescent characteristics.

http://dx.doi.org/10.5935/0100-4042.20150131

Publicado online: agosto 12, 2015
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Editorial Quim. Nova 2015, 38(9), 1139

 

O olhar de Janus

Adriano D. Andricopulo; Jailson B. de Andrade


http://dx.doi.org/10.5935/0100-4042.20150169

Artigos Quim. Nova 2015, 38(9), 1148-1152

 

Partição de proteínas de soro de leite em sistemas aquosos bifásicos baseados em líquidos iônicos

Benôit MichelI; Mateus Tomaz NevesI; Rita de Cássia Superbi de SousaI,*; Marcelo Martins das ChagasI; Bruna Amaral MartinsI; Jane Sélia dos Reis CoimbraII


Protein partition using aqueous two-phase systems (ATPS) composed of ionic liquids and potassium phosphate. Four ionic liquids were evaluated for their ability to form ATPS and to partition whey proteins.

http://dx.doi.org/10.5935/0100-4042.20150123

Publicado online: julho 22, 2015
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Quim. Nova 2015, 38(9), 1153-1161

 

Caracterização e avaliação in vitro de nanocompósitos de poli (L-ácido lático) e nanotubos de carbono de paredes múltiplas purificados

Claudenete Vieira LealI,*; Diego Stéfani Teodoro MartinezII,III; Andréa Rodrigues EspósitoI; Bruna Antunes MásI,IV; Ana Carolina Mazarin MoraesII; Oswaldo Luiz AlvesII; Eliana Aparecida Rezende de DuekI,IV


Multiwalled carbon nanotubes were purified and characterized for use in biomedical applications. Cell cultures were performed on the nanocomposite of poly (L-lactic acid) and purified carbon nanotubes to evaluate their cytocompatibility.

http://dx.doi.org/10.5935/0100-4042.20150132

Publicado online: agosto 12, 2015
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Quim. Nova 2015, 38(9), 1162-1166

 

Influência do catalisador em soluções poliméricas para o preparo de géis orgânicos de resorcinol-formaldeído

Thalita S. TaiariolI,*; Elizabete Y. KawachiI; Luiz C. PardiniI,II


Viscosity measurements and differential scanning calorimetry were used to characterize polymeric solutions. Fourier transform infrared spectroscopy was used to characterize the formed gels.

http://dx.doi.org/10.5935/0100-4042.20150124

Publicado online: julho 22, 2015
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Quim. Nova 2015, 38(9), 1167-1171

 

Synthesis and biological evaluation of spiro[indoline-3,4'-pyrano[2,3-c:6,5-c']dipyrazol]- 2-ones in the presence of SBA-Pr-SO3H as a nanocatalyst

Ghodsi Mohammadi ZiaraniI,*,#; Razieh MoradiI; Negar LashgariII; Alireza BadieiII; Ali Abolhasani SoorkiIII


Sulfonic acid functionalized SBA-15 nanoporous material (SBA-Pr-SO3H) with a pore size of 6 nm was applied as an efficient heterogeneous nanoporous acid catalyst in the reaction of isatin with pyrazolones under mild reaction conditions.

http://dx.doi.org/10.5935/0100-4042.20150125

Publicado online: julho 22, 2015
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Quim. Nova 2015, 38(9), 1172-1175

 

Chemical composition and anti-inflammatory activity of Roldana platanifolia

Amira ArciniegasI; Ana L. Pérez-CastorenaI,*; Antonio Nieto-CamachoI; Jhon Ironzi MaldonadoI; José Luis VillaseñorII; Alfonso Romo de VivarI


Eremophilanolide compounds (2-6) and chlorogenic acid (7) were isolated from Roldana platanifolia. The acetone and methanol extracts showed dose dependent activities with ID50 0.21 and 0.32 mg/ear, respectively, on the TPA model of induced acute inflammation.

http://dx.doi.org/10.5935/0100-4042.20150133

Publicado online: agosto 12, 2015
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Quim. Nova 2015, 38(9), 1176-1180

 

Discriminação de madeiras similares por fluorescência molecular e mínimos quadrados parciais

Elian Meneses OliveiraI; Jez Willian Batista BragaII,*; Alexandre Florian da CostaI


Direct measurements of molecular fluorescence and PLS-DA data analysis as an efficient method for discriminating between similar woods.

http://dx.doi.org/10.5935/0100-4042.20150127

Publicado online: julho 23, 2015
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Quim. Nova 2015, 38(9), 1181-1186

 

Characterizing the mechanism of quetiapine distribution in lipid-core nanocapsules pseudo-phases using a validated LC/UV method

Fernando Carreño; Karina Paese; Carolina de Miranda Silva; Sílvia S. Guterres; Teresa Dalla Costa*


Quetiapine lipid-core nanocapsules were prepared and using an HPLC/UV method, it was possible to determine the distribution of the drug in the pseudo-phases of the colloidal formulation.

http://dx.doi.org/10.5935/0100-4042.20150137

Publicado online: agosto 27, 2015
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Quim. Nova 2015, 38(9), 1187-1191

 

Ni(II), Cu(II), and Zn(II) complexes derived from a new schiff base 2-((Z)-(3-methylpyridin-2-yleimino)methyl)phenol and synthesis of nano sized metal oxide particles from these compounds

Masoumeh Orojloo; Fereshteh Nourian; Raziyeh Arabahmadi; Saeid Amani*,#


Three new complexes of Ni(II), Cu(II), and Zn(II) cations are described. All three compounds have the general formula [M(L)2(H2O)2]. All complexes have been synthesized in a one-step synthesis and characterized by spectroscopy.

http://dx.doi.org/10.5935/0100-4042.20150128

Publicado online: julho 23, 2015
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Quim. Nova 2015, 38(9), 1192-1195

 

Esteróis e constituintes voláteis da esponja dulcícola trochospongilla paulula (Bowerbank)

Iuri B. de BarrosI,II; Cecília Volkmer RibeiroIII; Valdir F. da Veiga JuniorII,*


The presence of volatile compounds (mainly hexadecanol, 51.6%) and cholesterol in the Amazonian freshwater sponge Trochospongilla paulula (Spongillidae) contributes to the "smell" of the river, and reinforces previous observations of the chemotaxonomic importance of chemical studies of these organisms.

http://dx.doi.org/10.5935/0100-4042.20150134

Publicado online: agosto 12, 2015
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Revisão Quim. Nova 2015, 38(9), 1196-1206

 

Microemulsões: componentes, características, potencialidades em química de alimentos e outras aplicações

José Dilson F. da SilvaI,II; Yara P. da SilvaIII; Clarisse M. S. PiatnickiIII; Wolmir José BöckelIV; Carla R. B. MendonçaI,*


Microemulsions are optically transparent, isotropic, and thermodynamically stable microheterogeneous dispersions of immiscible liquids. The transparency is a consequence of the small cross-sectional size of the dispersed droplets.

http://dx.doi.org/10.5935/0100-4042.20150135

Publicado online: agosto 12, 2015
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Quim. Nova 2015, 38(9), 1207-1218

 

Métodos de extração de poli-hidroxialcanoatos a partir de biomassa bacteriana

Luci K. M. Quines; Mélodi Schmidt; Kellen Zanfonato; Willibaldo Schmidell; Gláucia M. F. Aragão*


Processes for extracting polyhydroxyalkanoates (PHAs), which are biopolymers stored as an intracellular energy and reserve source in bacterial biomass, are described.

http://dx.doi.org/10.5935/0100-4042.20150129

Publicado online: julho 23, 2015
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Nota Técnica Quim. Nova 2015, 38(9), 1219-1225

 

Detection and quantification of phytochemical markers of Ilex paraguariensis by liquid chromatography

Rodrigo M. C. PintoI; Bruna M. LemesI; Acácio A. F. ZielinskiII; Traudi KleinI; Fernado de PaulaIII; Airton KistIV; Anna S. F. MarquesV; Alessandro NogueiraII; Ivo M. DemiateII; Flávio L. BeltrameI,*


Quality by design model, multivariate study, UHPLC-MS, and HPLC-DAD were used to develop and optimize the quality control method for the main phytochemical markers of Ilex paraguariensis.

http://dx.doi.org/10.5935/0100-4042.20150117

Publicado online: julho 6, 2015
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Quim. Nova 2015, 38(9), 1226-1231

 

Sistemas alternativos de calibração para determinação espectrofotométrica simultânea de espécies com interferência espectral

Sandra StetsI; Barbara Duarte da SilvaI; Talita Maria TavaresI; Gilcélia A. CordeiroI; Noemi NagataI; Christiana Andrade PessoaII; Patricio Peralta-ZamoraI,*


Alternative calibration methods, including multivariate calibration routines, increase the potentiality of electronic spectroscopy, facilitating its use in the simultaneous determination of mutually interfered species.

http://dx.doi.org/10.5935/0100-4042.20150141

Publicado online: agosto 31, 2015
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Educação Quim. Nova 2015, 38(9), 1232-1236

 

Practical stochastic model for chemical kinetics

Leonardo Silva-Dias; Alejandro López-Castillo*


Brusselator results were obtained from the Practical Stochastic Model for N=100 (blue) and N=104 (black), with [A] = 0.5, [B] = 1.4 and initial conditions of [X]0 = 1 and [Y]0 = 0.1.

http://dx.doi.org/10.5935/0100-4042.20150136

Publicado online: agosto 12, 2015
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Quim. Nova 2015, 38(9), 1237-1246

 

Ressonância magnética nuclear de substâncias organofluoradas: um desafio no ensino de espectroscopia

Frederico Silva Castelo BrancoI,II; Bárbara V. SilvaII; Gabriel Freitas do RioII; Mábio João SantanaIII; Luiz Henrique Keng Queiroz JúniorIII; Angelo C. PintoII; Núbia BoechatI; Luciano Morais LiãoIII,*


Nuclear magnetic resonance of organofluorine compounds: a challenge in the teaching of spectroscopy.

http://dx.doi.org/10.5935/0100-4042.20150139

Publicado online: agosto 27, 2015
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Assuntos Gerais Quim. Nova 2015, 38(9), 1247-1252

 

Treatment of waste from atomic emission spectrometric techniques and reuse in undergraduate lab classes for qualitative analysis

Francisco L. F. da SilvaI; Thalita O. A. DuarteI; Allan N. S. DantasII; Gisele S. LopesI; Sandro T. GouveiaI; Wladiana O. MatosI,*


Treatment of laboratory trace element analysis wastes for reuse in qualitative analysis in undergraduate course.

http://dx.doi.org/10.5935/0100-4042.20150142

Publicado online: agosto 31, 2015
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