Results 11 to 20 of about 513 (131)

Determinação rápida de fármacos básicos em plasma por cromatografia a gás com detector de nitrogênio e fósforo

Química Nova, 2012
A simple and fast method for determination of 40 basic drugs in human plasma employing gas-chromatography with nitrogen-phosphorus detection was developed and validated. Drugs were extracted from 800 µL of plasma with 250 µL of butyl acetate at basic pH.
Lilian Feltraco Lizot, Luana Letícia da Silva, Bárbara Spaniol, Marina Venzon Antunes, Rafael Linden, Rafael Lanaro   +5 more
doaj   +1 more source

Composição química da cera epicuticular e caracterização da superfície foliar em genótipos de cana-de-açúcar Chemical composition of epicuticular wax and characterization of leaf surface in sugarcane genotypes

Planta Daninha, 2005
Objetivou-se neste trabalho avaliar a composição química da cera epicuticular e caracterizar a superfície foliar dos cultivares de cana-de-açúcar RB855113 (sensível à mistura de herbicidas trifloxysulfuron-sodium + ametryn), SP80-1842 e SP80-1816, do ...
E.A. Ferreira, A.J. Demuner, A.A. Silva, J.B. Santos, M.C. Ventrella, A.E. Marques, S.O. Procópio   +6 more
doaj   +1 more source

Detecção de Resíduos de Agrotóxicos no Mel de Abelha

ACTA Apicola Brasilica, 2014
As abelhas A. melífera são uns dos mais importantes polinizadores de culturas, além disso, elas produzem mel, própolis, geleia real e cera. O mel, principal produto da atividade apícola, utilizado como alimento, adoçante e para fins terapêuticos ...
F. M. Silva, D. C. Coelho, A. V. Machado, R. O. Costa   +3 more
doaj   +1 more source

Determinação simultânea de topiramato, carbamazepina, fenitoína e fenobarbital em plasma empregando cromatografia a gás com detector de nitrogênio e fósforo

Química Nova, 2013
Topiramate and the other frequently co-administered antiepileptic drugs carbamazepine, phenytoin and phenobarbital were determined in 100 µL plasma samples by gas chromatography with nitrogen phosphorus detection (GC-NPD), after a one-step liquid-liquid ...
Roberta Zilles Hahn, Olyr Celestino Kreutz, Marina Venzon Antunes, Rafael Linden, Juliana da Silva, Cléber Álvares da Silva   +5 more
doaj   +1 more source

Essential oil from two populations of Echinodorus grandiflorus (Cham. & Schltdl.) Micheli (Chapéu de couro)

Anais da Academia Brasileira de Ciências, 2006
Analysis by Gas Chromatography and Gas Chromatography/Mass Spectrometry of the essential oils obtained from leaves of Echinodorus grandiflorus ("Chapéu de couro") from two different populations (Big Leaves and Small Leaves), collected monthly between ...
Daniel S. Pimenta, Maria Raquel Figueiredo, Maria Auxiliadora C. Kaplan   +2 more
doaj   +1 more source

Spasmolytic and Antibacterial Activity of Two Citrus sinensis Osbeck Varieties Cultivated in Mexico

Evidence-Based Complementary and Alternative Medicine, Volume 2017, Issue 1, 2017., 2017
Antibacterial activity on ATCC strains of Escherichia coli, Salmonella enterica, Salmonella enteritidis, and Salmonella choleraesuis and spasmolytic effect on contraction on rat ileum trips were determinate. Eight organic extracts (hexanic and methanolic) of albedo (mesocarp) and flavedo (pericarp) of two varieties (Valencian and National) of Citrus ...
Amanda Sánchez-Recillas, Ana Ly Arroyo-Herrera, Jesús Alfredo Araujo-León, Emanuel Hernández Núñez, Rolffy Ortiz Andrade, Vincenzo De Feo   +5 more
wiley   +1 more source

Implementação de método analítico para determinação de resíduos de organofosforados em leite por cromatografia a gás com detector fotométrico de chama

Química Nova, 2012
This paper regards the implementation of the QuEChERS method for the analysis by GC-FPD of 53 different pesticides from the organophosphate class, in whole UHT and pasteurized milk.
Lucia Helena Pinto Bastos, Adherlene Vieira Gouvêa, Fabíola Málaga, Maria Helena Wohlers Morelli Cardoso, Silvana do Couto Jacob, Armi Wanderley da Nóbrega   +5 more
doaj   +1 more source

Production and Characterization of Polyhydroxyalkanoates and Native Microorganisms Synthesized from Fatty Waste

International Journal of Polymer Science, Volume 2016, Issue 1, 2016., 2016
Polyhydroxyalkanoates (PHAs) are biodegradable and biocompatible plastics. They are synthesized by a wide variety of microorganisms (i.e., fungi and bacteria) and some organisms such as plants, which share characteristics with petrochemical‐based plastics.
Javier Ricardo Gómez Cardozo, Amanda Lucía Mora Martínez, María Yepes Pérez, Guillermo Antonio Correa Londoño, Antonio Teixeira   +4 more
wiley   +1 more source

Liposomal Formulation of Turmerone‐Rich Hexane Fractions from Curcuma longa Enhances Their Antileishmanial Activity

BioMed Research International, Volume 2014, Issue 1, 2014., 2014
Promastigote forms of Leishmania amazonensis were treated with different concentrations of two fractions of Curcuma longa cortex rich in turmerones and their respective liposomal formulations in order to evaluate growth inhibition and the minimal inhibitory concentration (MIC).
Ana Claudia F. Amaral, Luciana A. Gomes, Jefferson Rocha de A. Silva, José Luiz P. Ferreira, Aline de S. Ramos, Maria do Socorro S. Rosa, Alane B. Vermelho, Igor A. Rodrigues, Subhash Chandra Parija   +8 more
wiley   +1 more source

Composição química e eficácia do óleo essencial e do extrato etanólico de Alpinia zerumbet sobre Staphylococcus aureus

Arquivos do Instituto Biológico, 2016
RESUMO: O presente trabalho descreve a atividade antibacteriana do óleo essencial e do extrato etanólico das folhas de Alpinia zerumbet (colônia) sobre cepas de Staphylococcus aureus isoladas de vacas com mastite subclínica e cepas padrão ATCC 29213 e ...
Karina Neoob de Carvalho Castro, David Fernandes Lima, Luciene Costa Vasconcelos, Raimunda Cardoso Santos, Alitiene Moura Lemos Pereira, Fabíola Helena dos Santos Fogaça, Kirley Marques Canuto, Edy Sousa de Brito, Rodrigo Maciel Calvet   +8 more
doaj   +1 more source