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Chemical composition, antioxidant and antibacterial activities of essential oils from leaves and flowers of Eugenia klotzschiana Berg (Myrtaceae)

Overview of attention for article published in Anais da Academia Brasileira de Ciências, September 2017
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Title
Chemical composition, antioxidant and antibacterial activities of essential oils from leaves and flowers of Eugenia klotzschiana Berg (Myrtaceae)
Published in
Anais da Academia Brasileira de Ciências, September 2017
DOI 10.1590/0001-3765201720160652
Pubmed ID
Authors

NÁRGELLA S. CARNEIRO, CASSIA C.F. ALVES, JOSÉ M. ALVES, MARIANA B. EGEA, CARLOS H.G. MARTINS, THAYNÁ S. SILVA, LIZANDRA C. BRETANHA, MAIRA P. BALLESTE, GUSTAVO A. MICKE, EDUARDO V. SILVEIRA, MAYKER L.D. MIRANDA

Abstract

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.

Mendeley readers

The data shown below were compiled from readership statistics for 82 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 82 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 16 20%
Student > Master 16 20%
Student > Ph. D. Student 10 12%
Student > Postgraduate 6 7%
Researcher 5 6%
Other 11 13%
Unknown 18 22%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 16 20%
Agricultural and Biological Sciences 11 13%
Chemistry 11 13%
Pharmacology, Toxicology and Pharmaceutical Science 5 6%
Immunology and Microbiology 4 5%
Other 12 15%
Unknown 23 28%