Alkaloids Variation
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Development and Validation of a UPLC-ESI-MS Method for Quantitation of the Anti-Alzheimer Drug Galantamine and other Amaryllidaceae Alkaloids in Plants
Our study aimed at the development of a method based on ultra-performance liquid chromatography coupled to mass spectrometry (UPLC-ESI-MS) using selected ion monitoring for the simultaneous quantitation of the alkaloids galantamine, pseudolycorine, sanguinine and narciclasine in Amaryllidaceae species (Hippeastrum elegans, Habranthus cf. irwinianus, Hymenoca
J. Braz. Chem. Soc.. Publicado em: 2020-02
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2. Simultaneous HPLC analysis of crebanine, dicentrine, stephanine and tetrahydropalmatine in Stephania venosa
ABSTRACT Stephania venosa (Blume) Spreng., Menispermaceae, has been traditionally used as tonic drug and treatment of various diseases in South East Asian countries. In order to evaluate the quality and standardization of S. venosa roots, the HPLC method for quantification of the content of major components in S. venosa was developed and validated. The chrom
Rev. bras. farmacogn.. Publicado em: 2017-12
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3. HPLC-DAD DETERMINATION OF BERBERINE, CHELERYTHRINE AND SANGUINARINE IN THE MEXICAN PRICKLY POPPY (Argemone mexicana L. PAPAVERACEAE), A MEDICINAL PLANT
A sensitive, simple, rapid and reliable HPLC-DAD method for the analysis of the benzylisoquinoline alkaloids (BIA's) content in Argemone mexicana (Papaveraceae) is presented. This method allows the simultaneous separation and quantitation of berberine (Bn), chelerythrine (C) and sanguinarine (S) in extracts from A. mexicana tissues, reducing time of analysis
Quím. Nova. Publicado em: 2017-10
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4. Antiherbivory defense mechanisms along an environmental gradient in restinga
ABSTRACT Plant-herbivore interactions have directed the evolution of defense mechanisms in plants, which can vary intraspecifically according to environmental quality. This study evaluated variation in the production of antiherbivory defenses in plant species distributed along an environmental gradient of restinga. The study was performed in Parque Estadual
Acta Bot. Bras.. Publicado em: 21/09/2017
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5. Relação entre os compostos químicos e as categorias psicoativas das plantas psicoativas citadas na obra de Pio Correa: uma ferramenta para a seleção de potenciais bioativos. / Connection between chemical compounds and psychoactive categories present in plants as indicated in the literary work of Pio Correa: a tool for selecting bioactive compounds.
Ethnopharmacological surveys investigate the use of plants and other medicinal and toxic substances by different populations. One of its approaches is researching on the available knowledge of medicinal plants in published literature. The purpose of the current study was read the literary work of Pio Correa and extracts the plants with psychoactive effects.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2009
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6. Analysis of phytochemical variation, genetic structure and economic importance of Annona crassiflora Mart., in cerrado / Análises das variações fitoquímicas, estruturas genética e importância econômica de Annona crassiflora Mart., no cerrado
A Annona crassiflora Mart. é uma espécie frutífera nativa do cerrado que possui alto potencial de uso e ampla distribuição. O presente trabalho tem os seguintes objetivos: identificar e quantificar aminoácidos livres, carboidratos solúveis e ácidos graxos da polpa e das sementes, visando ampliar os conhecimentos sobre potencial econômico de A. crass
Publicado em: 2009
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7. Determinação dos enantiômeros da atropina em soluções oftálmicas empregando a cromatografia líquida de alta eficiência com fase estacionária quiral / Determination of atropine enantiomers in ophthalmic solutions by liquid chromatography using a chiral stationary phase
There are many therapeutic agents commercialized under racemic form. The enantiomers can show significant differences in the pharmacokinetic and pharmacodynamic profiles. The use of pure enantiomer in pharmaceutical formulations can result in better adjustment of dose and less adverse effects. Atropine, an alkaloid of the Atropa belladonna, is a racemic mixt
Publicado em: 2007
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8. Genetic structure and chemical defenses variaton in Brugmansia suaveolens (Solanaceae) / Estruturação genetica e variação de defesas quimicas em Brugmansia suaveolens (Solanaceae)
Populations patchily distributed tend to show high genetic structure and strong micro-evolutionary process evidences. Brugmansia suaveolens (Solanaceae) individuals are restrict to population patches. In this work, the genetic diversity of nine B. suaveolens populations was estimate by means of allozyme electrophoresis (chapter 1). Our results indicate high
Publicado em: 2006
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9. Effect of alkaloid arborinine and flavonoid rutin obtained of native plants from Bahia-Brazil on the viability and function of murine spleen and thymus cells in vitro. / Efeitos do alcalóide arborinina e do flavonóide rutina, extraídos de plantas nativas da Bahia, sobre funcionalidade e viabilidade de células de baço e timo murino in vitro.
Arborinine is an acridone alkaloid obtained from Erthela bahiensis, plant popularly used as diuretic, antidiabetic, antithermic and expectorant. Rutin is a citroflavonol obtained from Dimorphandra mollis a native medicinal plant from cerrado region in Bahia Brazil and has been described as anti-oxidative, anti-hemorrhagic and as a blood vessel protector. The
Publicado em: 2005
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10. Chemical defense against predation in an insect egg
The larva of the green lacewing (Ceraeochrysa cubana) (Neuroptera, Chrysopidae) is a natural predator of eggs of Utetheisa ornatrix (Lepidoptera, Arctiidae), a moth that sequesters pyrrolizidine alkaloids from its larval foodplant (Fabaceae, Crotalaria spp.). Utetheisa eggs are ordinarily endowed with the alkaloid. Alkaloid-free Utetheisa eggs, produced expe
The National Academy of Sciences.
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11. Combined Molecular and Biochemical Approach Identifies Aspergillus japonicus and Aspergillus aculeatus as Two Species
We examined nine Aspergillus japonicus isolates and 10 Aspergillus aculeatus isolates by using molecular and biochemical markers, including DNA sequences of the ITS1-5.8S rRNA gene-ITS2 region, restriction fragment length polymorphisms (RFLP), and secondary-metabolite profiles. The DNA sequence of the internal transcribed spacers (ITS1 and ITS2) and the 5.8S
American Society for Microbiology.