Investigação sobre compostos voláteis de espécies de Baccharis nativas do Rio Grande do Sul
AUTOR(ES)
Vanessa Barbieri Xavier
FONTE
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia
DATA DE PUBLICAÇÃO
21/11/2011
RESUMO
The species of Baccharis spp. (Compositae) are an important source of research to investigation new active ingredients for medicinal natural products. Thus, this work presents a proposition of research on volatile compounds of three native species of Baccharis (Baccharis anomala DC, Baccharis dentata (Vell) G. M. Barroso and Baccharis uncinella DC) collected in january and may of 2011, in São Francisco de Paula (RS) in Centro de Pesquisa e Conservação da Natureza Pró-Mata (CPCN Pró-Mata). For this, it was performed the extraction of essential oil by steam distillation, the analysis by gas chromatography-mass spectrometry (GC/MS), olfactometry analysis (GC/FID/O) and qualitative evaluation of antimicrobial activity against S. aureus, S. choleraesuis, P. aeruginosas, C. albicans, A. niger, C. parapsilosis, C. neoformans, Rh. stolonifer, F. solani e A. Oryzae using the bioautography indirect method. Moreover, it was performed the mathematical modeling of extraction process by steam distillation, based on mass transfer, which was applied to correlate the experimental data of yield versus time of volatile oil. The results showed that the time of the collection has influence on the compositions of essential oils, but a little influence on the yield. The mathematical model applied were correlated the experimental data. The essential oils of Baccharis anomala and Baccharis uncinella can be used as disinfectants. The analysis of GC/MS and GC/FID/O are needed due to differences in intensity of volatile compounds detected in the two analysis. This study provides new olfactometric profiles for the three species of Baccharis studied and new results for the chemical compositions of essential oils of Baccharis anomala and Baccharis dentata.
ASSUNTO(S)
engenharias engenharia de materiais cromatografia a gÁs Óleos essenciais plantas aromÁticas
ACESSO AO ARTIGO
http://tede.pucrs.br/tde_busca/arquivo.php?codArquivo=3810Documentos Relacionados
- Óleos voláteis de espécies de Myrcia nativas do Rio Grande do Sul
- FENOLOGIA DE ESPÉCIES NATIVAS ARBÓREAS NA REGIÃO CENTRAL DO ESTADO DO RIO GRANDE DO SUL
- Relações entre variáveis nas análises de sementes de espécies florestais nativas do Rio Grande do Sul
- CRESCIMENTO DE ESPÉCIES NATIVAS DE UMA FLORESTA ESTACIONAL DECIDUAL/OMBRÓFILA MISTA DO RIO GRANDE DO SUL
- Potencial alelopàtico do óleo essencial de espécies de Heterothalamus Less.(Asteraceae) nativas do Rio Grande do Sul