Now showing items 1-10 of 667
Extração por fluido supercrítico de alguns inseticidas carbamatos em amostras de batata, com determinação por HPLC/fluorescência e confirmação por HPLC/espectrometria de massas
(Química Nova, 2002-05-01) [Artigo]
Six supercritical fluid extraction (SFE) methods were tested, by varying the following operational parameters: CO2 pressure, time and temperature of extraction, type and proportion of static modifier, and Hydromatrix®/sample ...
Toxicity of extracts and isobutyl amides from Piper tuberculatum: potent compounds with potential for the control of the velvetbean caterpillar, Anticarsia gemmatalis
(Pest Management Science, 2007-04-01) [Artigo]
The isobutyl amides pellitorine (compound 1) and 4,5-dihydropiperlonguminine (compound 2) were extracted from the seeds of Piper tuberculatum Jacq. (Piperaceae) in yields of 6.10 and 4.45% respectively. The acute toxicities ...
Extraction and clean-up procedure for analysis of organochlorine pesticide residues in ethoxylated lanolin
(Farmaco, 2000-09-01) [Artigo]
In the present study an evaluation was made of a method for the determination of organochlorine pesticide residues in ethoxylated lanolin. Samples were homogenized with Celite, transferred to chromatographic columns, ...
Chromatographic fingerprinting and biological activity of different Byrsonima species
(Planta Medica, 2014-11-01) [Resumo]
Special Issue in Honor of Professor David G. I. Kingston
(Journal Of Natural Products, 2009-03-01) [Editorial]
Plant derived alkaloid (-)-cassine induces anti-inflammatory and anti-hyperalgesics effects in both acute and chronic inflammatory and neuropathic pain models
(Neuropharmacology, 2012-02-01) [Artigo]
Natural products have been revealed as relevant sources of therapeutic agents including those for the management of pain states. In this study, the anti-nociceptive and anti-inflammatory effects of (-)-cassine, isolated ...
Vision 2025, The Brazilian Chemical Society (SBQ) and the global chemistry enterprise: Building a sustainable development strategy
(Abstracts of Papers of the American Chemical Society, 2013-04-07) [Resumo]
Two decades of research on natural products chemistry from Brazilian biodiversity: inspirations and motivations
(Abstracts Of Papers Of The American Chemical Society, 2014-08-10) [Resumo]
Rapid method for the determination of thiabendazole and imazalil residues in orange by capillary column gas chromatography
(HRC Journal of High Resolution Chromatography, 1999-05-18) [Artigo]