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Antibacterial activity of crude methanolic extract and fractions obtained from ...
Martins, Silvia; Amorim, Elba L. C.; Sobrinho, Tadeu J. S. Peixoto; Saraiva, Antonio M.; Pisciottano, Maria N. C.; Aguilar, Cristóbal N.The emergence of new infections and increase of bacteria drug-resistance rise up the urgent need for the development of new antibacterial agents from natural sources. This study was designed to evaluate the antibacterial activity of the crude methanolic extract (CME) and fractions [hexane (H), dichloromethane (DCM), ethyl acetate (EA) and ethanol (Et)] obtained from Larrea tridentata (Sessé & Moc. Ex DC.) Covil...
Antibacterial activity of crude methanolic extract and fractions obtained from ...
Martins, Silvia; Mussatto, Solange I.; Aguilar, Cristóbal N.; Amorim, Elba L. C.; Peixoto, Tadeu; Saraiva, Antonio M.; Teixeira, J. A.Larrea tridentata (Zygophyllaceae), commonly known as creosote bush, is a plant that grows in semiarid areas of Southwestern United States and Northern Mexico and was traditionally used for medicinal purposes. This plantis a notable source of natural compounds with approximately 50% of the leaves (dry weight) being extractable matter. This study was designed to evaluate the antibacterial activity of the crude m...
Análise da pluviosidade e do efeito de borda sobre os teores de flavonóides em ...
Peixoto Sobrinho,Tadeu J. da S.; Cardoso,Késsio de C. M.; Gomes,Tiago de L. B.; Albuquerque,Ulysses P.; Amorim,Elba L. C.Este estudo avaliou a influência do efeito de borda e da pluviosidade sobre a produção de flavonóides em indivíduos de Bauhinia cheilantha (Bong.) Steud., Fabaceae, em uma área de caatinga no estado de Pernambuco, Nordeste do Brasil. Foi utilizada metodologia analítica por complexação com cloreto de alumínio para quantificar a concentração de flavonóides contidos nos extratos foliares de B. cheilantha, por meio...
Influence of biflorin on the labelling of red blood cells, plasma protein, cell...
Aquino,Thiago M.; Amorim,Elba L. C.; Feliciano,Gláucio Diré; Lima,Elaine A. C.; Gomes,Maria L.; Lima,Cláudia S. A.; Albuquerque,Ulysses P.In this paper we report the results of an in vitro study involving the influence of biflorin (an o-quinone isolated from Capraria biflora L. that has potent antimicrobial activity) on the Tc-99m labeling of red blood cells, plasma protein, cells protein, and lymphocytes. Blood was withdrawn from Wistar rats and incubated with various concentrations of biflorin, and solutions of stannous chloride and Tc-99m were...
The effects of seasonal climate changes in the caatinga on tannin levels in Myr...
Monteiro,Júlio M.; Albuquerque,Ulysses P.; Lins Neto,Ernani M.F.; Araújo,Elcida L.; Albuquerque,Miracy M.; Amorim,Elba L.C.The influence of seasonal climatic changes on tannin concentrations was examined in two caatinga (semi-arid) plant species (Myracrodruon urundeuva (Engl.) Fr. All. and Anadenanthera colubrina (Vell.) Brenan). The Folin-Ciocalteau method was used to quantify total phenols, and the casein precipitation method was used for tannins. In general, there is a close relationship between tannin levels and rainfall, altho...
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