Antimicrobial activity of propolis and essential oils and synergism between these natural products
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Data
2011-01-01
Autores
Probst, I. S. [UNESP]
Sforcin, J. M. [UNESP]
Rall, V. L. M. [UNESP]
Fernandes, A. A. H. [UNESP]
Fernandes, A. [UNESP]
Título da Revista
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Título de Volume
Editor
Universidade Estadual Paulista (Unesp), Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP)
Resumo
In the present study, Apis mellifera propolis and essential oils (EOs) obtained from aromatic plants were evaluated as alternative antimicrobials. We aimed to establish the antimicrobial activity of ethanolic extracts of propolis (EEP) from Apis mellifera and of EOs from Caryophyllus aromaticus, Zingiber officinale, Cinnamomum zeylanicum and Mentha piperita against 32 Staphylococcus aureus and Escherichia coli strains from human clinical specimens. The antimicrobials were diluted in agar and the minimal inhibitory concentrations (MIC) were found whereas MIC(90%) values were calculated. Time-kill curve assays using mixtures containing one quarter of MIC(90%) for EEP with all EOs as well cinnamon EO were performed. The cinnamon EO was found to be the most efficient, with MIC(90%) values of 1.22 and 0.96 mg x mL(-1) respectively against S. aureus and E. coli, whereas MIC(90%) of EEP were 1.86 and 20.12 mg x mL(-1) respectively against S. aureus and E. coli. The combinations of EEP with ginger and mint EOs, and cinnamon with ginger and clove EOs, showed synergistic effects. Consequently, further studies are necessary to confirm these activities in vivo and to evaluate the phytochemical characteristics of natural products.
Descrição
Palavras-chave
Apis mellifera, aromatic plants, ethanolic extract of propolis, Staphylococcus aureus, Escherichia coli
Como citar
Journal of Venomous Animals and Toxins Including Tropical Diseases. Botucatu: Cevap-unesp, v. 17, n. 2, p. 159-167, 2011.