|
|
|
|
|
| Faria,Terezinha de Jesus; Ferreira,Rafael Sottero; Yassumoto,Lidiane; Souza,José Roberto Pinto de; Ishikawa,Noemia Kazue; Barbosa,Aneli de Melo. |
| An investigation of antifungal activity of the essential oil obtained by steam-distillation (1.1% w/w) of the aerial parts of Ocimum gratissimum and of an ethanolic extract from the steam-distillation residue was carried out using the agar diffusion method. The results revealed that the essential oil inhibited the growth of all fungi tested, including the phytopathogens, Botryosphaeria rhodina, Rhizoctonia sp. and two strains of Alternaria sp., while the extract from the residue was inactive. The essential oil was subjected to TLC bioautography used to detect fungitoxic constituents. The compound that showed antifungal activity was isolated and identified as eugenol. GC/MS analysis showed that eugenol was the main constituent of the essential oil studied.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocimum gratissimum; Antifungal activity; Eugenol; Phytopathogenic fungi. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700002 |
| |
|
|
| Custódio,Dayana Lacerda; Burgo,Rafaela Pinheiro; Moriel,Bárbara; Barbosa,Aneli de Melo; Rezende,Maria Ines; Daniel,Juliana Feijó de Souza; Pinto,Jurandir Pereira; Bianchini,Edmilson; Faria,Terezinha de Jesus. |
| The present study describes the chemical composition and antimicrobial activity of essential oils obtained by hydrodistillation from the leaves of Pimenta pseudocaryophyllus (1.0% w/w) and Tynanthus micranthus (1.1% w/w). GC and GC/MS analysis demonstrated that eugenol was the only component in the T. micranthus essential oil (99.9%) and the major component in the P. pseudocaryophyllus essential oil (92.59%), which also presented methyleugenol, terpinen-4-ol, o-cymene and (E)-caryophyllene, among others. Both the oils presented antimicrobial activity against bacteria, yeast and filamentous fungi tested.The Bioautography test revealed that eugenol was the bioactive component in both the oils against Cladosporium herbarum. This is the first report about the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pimenta pseudocaryophyllus; Tynanthus micranthus; Essential oil; Antimicrobial activity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000600013 |
| |
|
|
| Ferreira,Magda Cristiani; Souza,José Roberto Pinto de; Faria,Terezinha de Jesus. |
| O picão-preto (Bidens pilosa L.) é uma planta daninha muito agressiva, que está presente em quase todo Brasil. O principal método de controle é o químico, porém apresenta elevado impacto ambiental, risco de intoxicação humana e possibilidade de causar fitotoxicidade as culturas. O objetivo do trabalho foi avaliar o efeito alelopático de extratos etanólicos de Eucalyptus citriodora Hook. e Pinus elliottii L. na germinação e no crescimento inicial de picão-preto e alface (Lactuca sativa L.). Foram testadas quatro concentrações de cada extrato (0,25; 0,50; 1,0 e 2,0 %) além do controle (0,0 %) água destilada com Tween 20 a 0,08 %. O delineamento experimental foi o inteiramente casualizado, com quatro repetições em condições de laboratório. O extrato de P.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus citriodora; Pinus elliottii; Bidens pilosa; Lactuca sativa. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000400017 |
| |
|
|
|
