Data/hora: 11/06/2024 04:36:01

Provedor de dados: | 58
País: | Brazil
Título: | Chemical and botanical characterization of Chilean propolis and biological activity on cariogenic bacteria Streptococcus mutans and Streptococcus sobrinus
Autores: | Barrientos,Leticia; Herrera,Christian L.; Montenegro,Gloria; Ortega,Ximena; Veloz,Jorge; Alvear,Marysol; Cuevas,Alejandro; Saavedra,Nicolás; Salazar,Luis A.
Data: | 2013-01-01
Ano: | 2013
Palavras-chave: | Propolis; Botanical characterization; Chemical characterization; Streptococcus mutans; Streptococcus sobrinus.
Resumo: | Propolis is a non-toxic natural substance with multiple pharmacological properties including anticancer, antioxidant, fungicidal, antibacterial, antiviral, and anti-inflammatory among others. The aim of this study was to determine the chemical and botanical characterization of Chilean propolis samples and to evaluate their biological activity against the cariogenic bacteria Streptococcus mutans and Streptococcus sobrinus. Twenty propolis samples were obtained from beekeeping producers from the central and southern regions of Chile. The botanical profile was determined by palynological analysis. Total phenolic contents were determined using colorimetric assays. Reverse phase HPLC and HPLC-MS were used to determine the chemical composition. The minimum inhibitory concentration (MIC) was determined on S. mutans and S. sobrinus. All propolis samples were dominated by structures from native plant species. The characterization by HPLC/MS, evidenced the presence of quercetin, myricetin, kaempferol, rutine, pinocembrin, coumaric acid, caffeic acid and caffeic acid phenethyl ester, that have already been described in these propolis with conventional HPLC. Although all propolis samples inhibited the mutans streptococci growth, it was observed a wide spectrum of action (MIC 0.90 to 8.22 µgmL-1). Given that results it becomes increasingly evident the need of standardization procedures, where we combine both the determination of botanical and the chemical characterization of the extracts. Research conducted to date, describes a promising effectiveness of propolis in the prevention of caries and other diseases of the oral cavity, making it necessary to develop studies to identify and understand the therapeutic targets or mechanisms of molecular action of the various compounds present on them.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200038
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822013000200038
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.44 n.2 2013
Fonte: | info:eu-repo/semantics/openAccess