Now showing items 1-6 of 6
Application of preparative high-speed counter-current chromatography for the separation of flavonoids from the leaves of Byrsonima crassa Niedenzu (IK)
(Journal of Chromatography A, 2004-04-30) [Artigo]
The methanolic extract of the leaves of the medicinal plant Byrsonima crassa (Malpighiaceae) contain flavonoids with antioxidant activity. They were separated in a preparative scale using high-speed counter-current ...
Application of low-pressure gas chromatography-ion-trap mass spectrometry to the analysis of the essential oil of Turnera diffusa (Ward.) Urb.
(Journal of Chromatography A, 2004-02-20) [Artigo]
Turnera diffusa Willd. var. afrodisiaca (Ward) Urb. (syn. T. aphrodisiaca) belongs to the family of Turneraceae and is an aromatic plant growing wild in the subtropical regions of America and Africa. It is widely used in ...
Gastric antiulcer activity of Syngonanthus arthrotrichus SILVEIRA
(Biological & Pharmaceutical Bulletin, 2004-03-01) [Artigo]
Syngonanthus arthrotrichus SILVEIRA, popularly known as sempre-vivas mini-saia, is found in mountains of the Espinhaco range in the Brazilian states of Bahia and Minas Gerais. Extracts of this species contain several ...
Intermediate reactive oxygen and nitrogen from macrophages induced by Brazilian lichens
(Fitoterapia, 2004-07-01) [Artigo]
The activity of ten compounds isolated from Brazilian lichen over the release of hydrogen peroxide and nitric oxide was evaluated in the culture of peritoneal macrophage cells from mice. Salazinic, secalonic A and ...
Chemical profile of the polar extract of Paepalanthus microphyllus (Guill.) Kunth (Eriocaulaceae)
(Revista Brasileira de Ciências Farmacêuticas, 2004-09-01) [Artigo]
Do extrato etanólico dos capítulos de Paepalanthus microphyllus, isolou-se um derivado do ácido cafeico (1). Sua estrutura foi caracterizada por métodos espectroscópicos (RMN mono e bi-dimensionais) e por espetrometria de ...
Chemistry in Paepalanthus and taxonomic implications
(Biochemical Systematics and Ecology, 2004-05-01) [Artigo]