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| Fabri,Rodrigo L.; Grazul,Richard M.; Carvalho,Lidiane O. de; Coimbra,Elaine S.; Cardoso,Gabriele M.M.; Souza-Fagundes,Elaine M. de; Silva,Adilson D. da; Scio,Elita. |
| The bioactivity guided fractionation of the dichloromethane extract of Mitracarpus frigidus afforded the pyranonaphthoquinone psychorubrin. This compound, hitherto unknown in the genus Mitracarpus, had its biological activity evaluated against one panel of bacteria and two fungi, three tumor cell lines (HL60, Jurkat and MCF-7) and four Leishmania species. Its identity was confirmed unambiguously by ¹H, 13C, ¹H-COSY, IR and UV-Vis spectroscopy and mass spectrometry. Psychorubrin displayed a very promising antitumor with IC50 of 4.5, 5.6 and 1.1 µM for HL60, Jurkat and MCF-7 cell lines, respectively. Antimicrobial activity, mainly against Cryptococcus neoformans (MIC of 87.3 µM) was observed. A pronounced antileishmanial potential was also verified with IC50... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mitracarpus frigidus; Psychorubrin; Pyranonaphthoquinone; Rubiaceae. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400022 |
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| Cruz,Bruna P.; Chedier,Luciana M.; Fabri,Rodrigo L.; Pimenta,Daniel S.. |
| This study compares the development of Kalanchoe brasiliensis and Kalanchoe pinnata, which are medicinal species known as "saião" and "folha da fortuna" that are used interchangeably by the population for medicinal purposes. The experiment consisted of 20 plots/species planted in plastic bags with homogeneous substrate in a randomized design, which grown under light levels (25%, 50%, 70%, full sunlight) at environment temperature, and a treatment under a plastic with greater temperature range than the external environment. It was obtained for K. pinnata a greater plant height, total length of sprouts, stems, production and dry matter content of leaves than that obtained for K. brasiliensis, which achieved higher averages only for the length of lateral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kalanchoe; Luminosity; Mucilage; Flavonoids. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000400030 |
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| Cruz,Bruna P.; Chedier,Luciana M.; Peixoto,Paulo H.P.; Fabri,Rodrigo L.; Pimenta,Daniel S.. |
| This paper compares two medicinal species of Kalanchoe, which are often used interchangeably by the population, regarding the distribution of anthocyanins under the influence of four luminosity levels for 6 months. For the morphoanatomical analysis, the 6th stem node of each plant was sectioned. Usual histochemical tests revealed the presence of anthocyanins by cross sections of the stems, petioles and leaf blades. The petioles and leaf blades were submitted to the extraction with acidified methanol, and the anthocyanins were quantified by spectrophotometric readings. At the macroscopic level, it was noticed for both species a higher presence of anthocyanins in stems and petioles of plants under full sunlight. The microscopy of K. brasiliensis stems... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthocyanins; Kalanchoe; Luminosity; Vegetal anatomy. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100022 |
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| Fabri,Rodrigo L.; Coimbra,Elaine S.; Almeida,Ana C.; Siqueira,Ezequias P.; Alves,Tânia M.A.; Zani,Carlos L.; Scio,Elita. |
| In our previous work (Fabri et al. 2009), we showed that different extracts of Mitracarpus frigidus had significant antibacterial, antifungal and leishmanicidal activities. In order to increase our knowledge about this species, this work assesses the chemical composition and the in vitro biological activity of its essential oil. Thus, the essential oil obtained by hydrodistillation of the aerial parts of M. frigidus was analyzed by GC/MS. Among several compounds detected, 11 were identified, being linalool and eugenol acetate the major components. The essential oil exhibited a moderate antibacterial effect against Staphyloccocus aureus, Bacillus cereus, Pseudomonas aeruginosa and Enterobacter cloacae (MIC 250 µg/mL). On the other hand, it showed a strong... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mitracarpus frigidus; Essential oil; Antimicrobial; Antileishmanial; Cytotoxicity. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400021 |
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