Chemical composition, antioxidant and antibacterial activities of essential oils from leaves and flowers of Eugenia klotzschiana Berg (Myrtaceae)
| Autor: | Gustavo Amadeu Micke, Mayker Lazaro Dantas Miranda, Lizandra C. Bretanha, Maira Pereira Balleste, Eduardo V. Silveira, Carlos Henrique Gomes Martins, José Milton Alves, Cassia Cristina Fernandes Alves, Thayná de Souza Silva, Nárgella Silva Carneiro, Mariana Buranelo Egea |
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| Rok vydání: | 2017 |
| Předmět: |
Antioxidant
DPPH medicine.medical_treatment Prevotella Flowers Microbial Sensitivity Tests Eugenia 01 natural sciences Antioxidants Gas Chromatography-Mass Spectrometry law.invention chemistry.chemical_compound Eugenia klotzschiana Prevotella nigrescens Antioxidant activity antibacterial activity sesquiterpenes law Botany medicine drying Food science lcsh:Science Essential oil Multidisciplinary biology 010405 organic chemistry Chemistry 010401 analytical chemistry Myrtaceae Streptococcus Antimicrobial biology.organism_classification Brazilian pear Anti-Bacterial Agents 0104 chemical sciences Plant Leaves Streptococcus salivarius lcsh:Q Antibacterial activity |
| Zdroj: | Anais da Academia Brasileira de Ciências, Volume: 89, Issue: 3, Pages: 1907-1915, Published: 31 JUL 2017 Anais da Academia Brasileira de Ciências, Iss 0 Anais da Academia Brasileira de Ciências v.89 n.3 2017 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC |
| ISSN: | 1678-2690 0001-3765 |
| DOI: | 10.1590/0001-3765201720160652 |
| Popis: | Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC-MS. The major compounds were α-copaene (10.6 %) found in oil from leaves in natura, β-bisabolene (17.4 %) in the essential oil from dry leaves and α-(E)-bergamotene (29.9 %) in oil from flowers. The antioxidant activity of essential oils showed similarities in both methods under analysis (DPPH and ABTS˙+) and the results suggested moderate to high antioxidant activity. The antibacterial activity was evaluated by determining minimum inhibitory concentrations (MICs), using the microdilution method. MIC values below 400 µg/mL were obtained against Streptococcus salivarius (200 µg/mL), S. mutans (50 µg/mL), S. mitis (200 µg/mL) and Prevotella nigrescens (50 µg/mL). This is the first report of the chemical composition and antibacterial and antioxidant activities of the essential oils of E. klotzschiana. These results suggest that E. klotzschiana, a Brazilian plant, provide initial evidence of a new and alternative source of substances with medicinal interest. |
| Databáze: | OpenAIRE |
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