Data/hora: 02/06/2024 13:28:59

Provedor de dados: | 45
País: | Brazil
Título: | Indicadores físico-químicos e atividade antibacteriana de própolis marrom frente à Escherichia coli
Autores: | Bastos,E.M.A.F; Galbiati,C; Loureiro,E.M; Scoaris,D.O.
Data: | 2011-10-01
Ano: | 2011
Palavras-chave: | Abelha; Própolis; Atividade antibacteriana; Indicadores físico-químicos; Escherichia coli.
Resumo: | The activity of 23 samples of ethanolic brown propolis, from the State of Mato Grosso, was investigated against Escherichia coli ATCC 25922. The values of physical and chemical parameters showed significant variation among samples. The percentage of dry extract ranged from 2.6 to 27.6%. The index of oxidation varied from 3 to 519 seconds. All samples showed the percentage of wax higher than the limit preconized by the legislation, with values varying from 3.4 to 74.6%. The quantification of phenolic and flavonoid compounds, responsible for antimicrobial activity, ranged from 0.1 to 5.0 (w/w) and 0.02 to 0.66 (w/w), respectively, being that the higher the index of phenolic compounds the larger the zones of inhibition. Antibacterial activity was observed in seven out of the 23 samples, demonstrating zones of inhibition ranging from 10 to 11.3mm. For these active samples, the minimum inhibitory concentration was determined, ranging from 125 to 1000mg/mL. The value of MIC in 42.9% of these samples was 250mg/mL. These results contribute to the establishment of physical and chemical parameters for the regulation of brown propolis and indicate possible therapeutic applicability in the development of formulations for the treatment of infections caused by E. coli.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000500032
Editor: | Universidade Federal de Minas Gerais, Escola de Veterinária
Relação: | 10.1590/S0102-09352011000500032
Formato: | text/html
Fonte: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.63 n.5 2011
Fonte: | info:eu-repo/semantics/openAccess