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| Celotto,Andréa Carla; Nazario,Daniela Zaupa; Spessoto,Marcela de Almeida; Martins,Carlos Henrique Gomes; Cunha,Wilson Roberto. |
| The antimicrobial activity of nine crude extracts of three Miconia species (M. albicans, M. rubiginosa and M. stenostachya) was tested against eleven selected microorganisms: Staphylococcus aureus, Staphylococcus saprophyticus, Proteus mirabilis, Escherichia coli, Enterococcus faecalis, Shigella flexneri, Klebsiella pneumoniae, Salmonella sp, Pseudomonas aeruginosa, Streptococcus agalactiae and Candida albicans. The results of the test showed that three extracts had some antimicrobial activity by well diffusion method. The ethanol extracts of Miconia albicans and Miconia rubiginosa were the most active. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Antimicrobial activity; Miconia; Melastomataceae. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000400010 |
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| Severino,Vanessa Gisele Pasqualotto; Silva,Maria Fátima das Graças Fernandes da; Lucarini,Rodrigo; Montanari,Lilian Bueno; Cunha,Wilson Roberto; Vinholis,Adriana Helena Chicharo; Martins,Carlos Henrique Gomes. |
| Extracts from Hortia oreadica afforded four dihydrocinnamic acid derivatives, isolated from the n-hexane extract, as well as limonoid guyanin and the furoquinoline alkaloid dictamnine, both isolated from the dichloromethane extract. The extracts and the isolated compounds were tested against some oral pathogens, so as to investigate their antibacterial activity. The results showed that the n-hexane extract and the compound dictamnine are the most active against the selected microorganisms. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hortia oreadica; Rutaceae; Antibacterial activity; MIC; Oral pathogens. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000300015 |
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| Melo,Nathalya Isabel de; Carvalho,Carlos Eduardo de; Fracarolli,Letícia; Cunha,Wilson Roberto; Veneziani,Rodrigo Cassio Sola; Martins,Carlos Henrique Gomes; Crotti,Antônio Eduardo Miller. |
| In Brazilian folk medicine, Tetradenia riparia (Hochst.) Codd. (Lamiaceae) is used to treat toothaches and dental abscesses and diseases induced by worms, bacteria, or fungi. This paper aims to investigate the chemical composition and the antibacterial effects of the essential oil obtained from Tetradenia riparia leaves (TR-EO) grown in Southeastern Brazil against a representative panel of oral pathogens. We evaluated the antibacterial activity of TR-EO in terms of the minimal inhibitory concentration (MIC). We identified aromadendrene oxide (14.0%), (E,E)-farnesol (13.6%), dronabinol (12.5%), and fenchone (6.2%) as the major constituents of TR-EO. TR-EO displayed MIC values between 31.2 and 500 μg/mL, with the lowest MIC value being obtained against... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus mutans; Oral pathogens; Cariogenic bacteria. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200519 |
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| Petrolini,Fernanda Villas Boas; Lucarini,Rodrigo; Souza,Maria Gorete Mendes de; Pires,Regina Helena; Cunha,Wilson Roberto; Martins,Carlos Henrique Gomes. |
| In this study we evaluated the antibacterial activity of the crude hydroalcoholic extracts, fractions, and compounds of two plant species, namely Rosmarinus officinalis and Petroselinum crispum, against the bacteria that cause urinary tract infection. The microdilution method was used for determination of the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The crude hydroalcoholic extract of R. officinalis displayed in vitro activity against Gram-positive bacteria, with satisfactory MBC for the clinical isolate S. saprophyticus. The fractions and the pure compound rosmarinic acid did not furnish promising results for Gram-negative bacteria, whereas fractions 2, 3, and 4 gave encouraging results for Gram-positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial activity; Bioassay; Rosmarinus officinalis; Petroselinum crispum; Urinary Tract Infections (UTI). |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300025 |
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| Oliveira,Guilherme Ferreira de; Furtado,Niege Araçari Jacometti Cardoso; Silva Filho,Ademar Alves da; Martins,Carlos Henrique Gomes; Bastos,Jairo Kenupp; Cunha,Wilson Roberto; Silva,Márcio Luís de Andrade e. |
| The antimicrobial activity of Syzygium cumini leaves extract, known as "jambolão", was evaluated. The crude hydroalcoholic extract was active against Candida krusei (inhibition zone of 14.7 ± 0.3 mm and MIC = 70 µg/mL), and against multi-resistant strains of Pseudomonas aeruginosa, Klebsiella pneumoniae and Staphylococcus aureus. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial activity; Disk diffusion method; Microdilution broth method; Multi-resistant strains; Syzygium cumini. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200035 |
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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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| Pedroso,Rita Cássia Nascimento; Branquinho,Núbia Angélica de Ávila; Hara,Alessandra Cristina Boffino de Almeida Monteiro; Silva,Fabiano Guimarães; Kellner Filho,Luis Claudio; Silva,Marcio Luís Andrade; Cunha,Wilson Roberto; Pauletti,Patricia Mendonça; Januário,Ana Helena. |
| ABSTRACT: Hyptis marrubioides (Lamiaceae) is a medicinal plant that is native from Brazilian Cerrado. In vitro propagation techniques make use of elicitors to alter metabolic pathways, affecting how molecules are produced both qualitatively and quantitatively. This research aimed to evaluate how abiotic elicitors salicylic acid (SA) and silver nitrate (SN) at concentrations of 30µM or 60µM influence Hyptis marrubioides seedling growth by two different in vitro culture methods. The rutin content was quantified by HPLC-DAD. Compared to an untreated culture, the H. marrubioides methanolic extracts cultured in MS medium for 10 days followed by culture in MS medium containing SN (30µM) for 20 days had 1.28 times higher rutin content. In a second experiment,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salicylic acid; HPLC-DAD; Tissue culture; Silver nitrate; Elicitation; Plant growth regulators. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200400 |
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