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| Andrade,Cláudia Alexandra de; Carvalho,João Luiz de Souza; Cunico,Miriam Machado; Lordello,Ana Luísa Lacava; Higaskino,Carmen Etsuko Kataoka; Almeida,Siumara Costa da Cruz; Dias,Josiane de Fátima Gaspari; Kerber,Vitor Alberto; Miguel,Marilis Dallarmi; Miguel,Obdúlio Gomes. |
| The extracts and fractions from the flowers of A. podalyriifolia were analyzed previously for antibacterial activity using diffusion in disk, Antioxidant properties were evaluated by determining radical scavenging power (DPPH test) and total phenol content was measured (Folin method). The present study describes the in vitro antibacterial (determining minimum inhibitory concentration) and antioxidant activities (by thiobarbituric acid reactive species - TBARS method) for the ethanol extract, dichloromethane and ethyl acetate fractions and two flavanones (naringenin and 5-β-D-glycosyl-naringenin) isolated from the flowers of Acacia podalyriifolia A. Cunn. ex G. Don. The flavanones naringenin and 5-β-D-glycosyl-naringenin had not previously been obtained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acacia podalyriifolia/qualitative analysis; Acacia podalyriifolia/phytochemistry; Acacia podalyriifolia/antibacterial activity; Acacia podalyriifolia/antioxidant properties; Flavanones; 5-β-D-glycosyl-naringenin; Naringenin. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502010000400013 |
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| Kalegari,Milena; Miguel,Marilis Dallarmi; Dias,Josiane de Fátima Gaspari; Lordello,Ana Luísa Lacava; Lima,Cristina Peitz de; Miyazaki,Cristina Mayumi Sasaki; Zanin,Sandra Maria Warumby; Verdam,Maria Christina dos Santos; Miguel,Obdulio Gomes. |
| Most active plants are toxic at high doses and it is therefore important to investigate the preliminary toxicity of plant extracts. The Rourea induta species is a potential drug with no phytochemical or biological studies registered in the literature. Thus, a phytochemical study and a toxicity analysis of the ethanolic extract obtained from the leaves of Rourea induta Planch., Connaraceae, was run. A long chain hydrocarbon, n-tetracosane, and four flavonoids were identified: quercetin, and three glycosylated derivates, quercetin-3-O-α-arabinofuranoside, quercetin-3-O-β-xyloside and quercetin-3-O-β-galactoside. This is the first time these have been isolated in this species. The structures were elucidated by 13C NMR, ¹H NMR, UV and IR spectroscopy. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rourea induta/phytochemistry; Connaraceae/phytochemistry; Flavonoids; N-tetracosane; Plant extracts/toxicity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000300023 |
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