Now showing items 1-10 of 121
Antioxidant flavan-3-ols and flavonol glycosides from Maytenus aquifolium
(Phytotherapy Research, 2003-09-01) [Artigo]
TLC autographic assay revealed, in the EtOAc extract obtained from leaves and root bark of Maytenus aquifolium (Celastraceae), the presence of five compounds exhibiting antioxidant properties towards beta-carotene. They ...
Isobutyl amides - potent compounds for controlling Diatraea saccharalis
(Pest Management Science, 2009-01-01) [Trabalho apresentado em evento]
BACKGROUND: A dichloromethane-methanol extract of the seeds of Piper tuberculatum Jacq. (Piperaceae) and two isobutyl amides, 4,5-dihydropiperlonguminine (1) and pellitorine (2), which were isolated by chromatographic ...
Strategy for cloning of oxidosqualene cyclases from Maytenus ilicifolia
(FEBS Journal, 2012-09-01) [Resumo]
Antioxidant activity of Agaricus blazei
(Fitoterapia, 2007-04-01) [Artigo]
The ethanolic extract of Agaricus blazei and ethyl acetate and hydroalcoholic fractions were evaluated for their antioxidant activity. (C) 2007 Elsevier B.V. All rights reserved.
Bioactive flavone dimers from Ouratea multiflora (Ochnaceae)
(Revista Brasileira de Farmacognosia, 2007-09-01) [Artigo]
Chromatographic fractionation of the organic extract from leaves of Ouratea multiflora afforded the flavone dimers heveaflavone, amentoflavone-7¢¢,4¢¢¢-dimethyl eter, podocarpusflavone-A and amentoflavone. Their structures ...
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 ...
Intraspecific variability of dihydrochalcone, chromenes and benzoic acid derivatives in leaves of Piper aduncum L. (Piperaceae)
(African Journal of Biotechnology, 2009-05-18) [Artigo]
Chemical analysis carried out in leaves of 18 specimens of Piper aduncum L. (Piperaceae) occurring at Ripasa Reserve, Araraquara, SP, Brazil indicated two distinct populations when investigated over a period of 14 months ...
Screening test for antibiotics in medicinal plants (STAMP): using powdered plant materials instead of extracts
(American Journal of Plant Sciences, 2013) [Artigo]
Plants are a rich source of antibiotics, but screening all the existing plant species for biological activity using current methods can be time and resource consuming. The present study is to investigate whether powdered ...
Antioxidant activity of Maytenus ilicifolia root bark
(Fitoterapia, 2006-04-01) [Artigo]
Maytenus ilicifolia is an important plant with potential on cancer treatment and has been largely used in Brazil and other countries. We have evaluated the crude ethanolic extract of M. ilicifolia as a potential antioxidant ...
Indução de Metabólitos Bioativos em Culturas de Células de Maytenus Ilicifolia
(Eclética Química, 2002-01-01) [Artigo]
Visando a obtenção de triterpenos quinonametídeos em concentração apreciável protocolo para o desenvolvimento de culturas de células de M. ilicifolia foi estabelecido. Estudos visando observar a influência da luminosidade ...