Author(s)

Danubia Aparecida Carvalho Selvati Rezende¹, Rafaela Vieira Souza¹, Maisa Lamounier Magalhães², Alex Rodrigues Silva Caetano¹, Marcos Schleiden Sousa Carvalho³, Ellen Cristina de Souza², Luiz Gustavo de Lima Guimarães⁴, David Lee Nelson⁵, Luís Roberto Batista², Maria das Graças Cardoso^1*

¹Departamento de Química, Universidade Federal de Lavras, Lavras, Brasil.
²Departamento de Ciencia dos Alimentos, Universidade Federal de Lavras, Lavras, MG, Brasil.
²Departamento de Ciência dos Alimentos, Universidade Federal de Lavras, Lavras, MG, Brasil.
³Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil.
⁴Universidade Federal de Sao Joao del-Rei, Sao Joao del-Rei, Brasil.
⁵Universidade Federal do Vale do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.

Essential oils from Mentha piperita, Cymbopogon citratus, Rosmarinus officinalis, Peumus boldus and Foeniculum vulgare were extracted by hydrodistillation, chemically characterized and quantified by GC/MS and GC/FID. The principal componentes in the essential oil of M. piperita (carvone and limonene), C. citratus (geranial, neral and myrcene), R. officinalis (1,8-cineole, camphor and α-pinene), P. boldus (α-terpinyl formate, p-cymene and 1,8-cineole) and F. vulgare (methyl chavicol, limonene and fenchone) were identified. The oils were tested for antioxidant activity employing the DPPH (2,2-diphenyl-1-picryl-hydrazyl) radical-capture method, the oxidation of the β-carotene/linoleic acid system, and the ABTS radical-capture method. The essential oils were not effective. The antioxidant activities of the oils were determined by the hydroxyl method, and the highest activity (62.80%) was observed with the essential oil from M. piperita. Activities of 1.54 and 1.82 μg μg^-1, respectively, were observed for the essential oils from C. citratus and P. Boldus using the phosphomolybdenum method. No activity was observed with respect to reducing power. The essential oil from C. citratus was effective in inhibiting the growth of L. monocytogenes (15.63 mg·L^-1), S. choleraesuis (15.63 mg·L^-1) and E. coli (31.25 mg·L^-1), and the essential oil from P. boldus inhibited the growth of S. aureus (62.5 mg·L^-1). No essential oil inhibited the growth of P. aeruginosa. A low antioxidant activity and a promising antibacterial activity were observed for these essential oils.

Natural Products, Antioxidant, Antibacterial Activity

Rezende, D. , Souza, R. , Magalhães, M. , Silva Caetano, A. , Sousa Carvalho, M. , de Souza, E. , de Lima Guimarães, L. , Nelson, D. , Batista, L. and das Graças Cardoso, M. (2017) Characterization of the Biological Potential of the Essential Oils from Five Species of Medicinal Plants. American Journal of Plant Sciences, 8, 154-170. doi: 10.4236/ajps.2017.82012.