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| Bertanha,Camila Spereta; Utrera,Susane Hellen; Gimenez,Valéria Maria Melleiro; Groppo,Milton; Silva,Márcio Luis Andrade e; Cunha,Wilson Roberto; Martins,Carlos Henrique Gomes; Januário,Ana Helena; Pauletti,Patrícia Mendonça. |
| The antibacterial activity of the compounds egonol (1) and homoegonol (2), of the crude ethanolic extract of Styrax pohlii (Styracaceae) aerial parts (EE), and of its n-hexane (HF), EtOAc (EF), n-BuOH (BF), and hydromethanolic (HMF) fractions was evaluated against the following microorganisms: Streptococcus pneumoniae (ATCC 6305), S. pyogenes (ATCC 19615), Haemophilus influenzae (ATCC 10211), Pseudomonas aeruginosa (ATCC 27853), and Klebsiella pneumoniae (ATCC 10031). The broth microdilution method was used for determination of the minimum inhibitory concentration (MIC) during preliminary evaluation of antibacterial activity. The EE yielded MIC values of 400 µg/mL for S. pneumoniae and P. aeruginosa and 300 µg/mL for H. influenzae. The HF and EF fractions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Styrax pohlii/pharmacognosy; Styracaceae/pharmacognosy; Styrax pohlii/ethanolic extract; Styrax pohlii/antibacterial activity; Egonol/antibacterial activity; Homoegonol/antibacterial activity; Natural products/evaluation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400004 |
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| Groppo,Milton; Cruz-Barros,Maria Amélia Vitorino da; Correa,Angela Maria da Silva. |
| A palinological study covering all 10 species of the Neotropical genus Hortia Vand. (Rutaceae) was conducted. Pollen grains were collected from herbarium exsiccates, acetolysed and mounted in glycerine jelly on glass slides. The grains were studied under light and scanning electron microscopy, including measurements of polar and equatorial diameters, shape of the grains, number and shape of apertures, and thickness of the exine. The results demonstrated that the genus is stenopalynous, with pollen grains in monads, subprolate to prolate, 3-colporate, with very thick exine and a psilate-perforate pattern of ornamentation. Pollen grains of all species revealed a great similarity, with few variations in the pattern of ornamentation of exine, number and form... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hortia; Pollen; Rutaceae. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100003 |
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