Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/22131

Title: Chemical Composition, Antibacterial, Antibiofilm and Synergistic Properties of Essential Oils from Eucalyptus globulus Labill. and seven Mediterranean Aromatic Plants
Authors: Vieira, Maria
Bessa, Lucinda
Martins, M. Rosario
Arantes, Silvia
Teixeira, António
Mendes, Angelo
Martins da Costa, Paulo
Belo, A.D.F.
Keywords: Wild-grown aromatic plants
Essential oils
Antibacterial activity
Antibiofilm
Synergistic effects
Issue Date: Jun-2017
Citation: Vieira M, Bessa LJ, Martins MR, Arantes S, Teixeira APS, Mendes A, Martins da Costa P, Belo ADF (2017). Chemical Composition, Antibacterial, Antibiofilm and Synergistic Properties of Essential Oils from Eucalyptus globulus Labill. and seven Mediterranean Aromatic Plants. Chem Biodivers. 2017 Jun;14(6). doi: 10.1002/cbdv.201700006.
Abstract: Essential oils (EOs) from Eucalyptus globulus LABILL. ssp. globulus and from Mediterranean autochthonous aromatic plants – Thymus mastichina L., Mentha pulegium L., Rosmarinus officinalis L., Calamintha nepeta (L.) SAVI ssp. nepeta, Cistus ladanifer L., Foeniculum vulgare L., Dittrichia viscosa (L.) GREUTER ssp. viscosa – were extracted by hydrodistillation and characterized by GC-FID and NMR spectroscopy. EOs were evaluated for antimicrobial properties against several bacterial strains, using diverse methods, namely, the agar disc-diffusion method, the microdilution method, the crystal violet assay and the Live/Dead staining for assessment of biofilm formation. Potential synergy was assessed by a checkerboard method. EOs of R. officinalis and C. ladanifer showed a predominance in monoterpene hydrocarbons (> 60%); EOs of C. nepeta, M. pulegium, T. mastichina, E. globulus and F. vulgare were rich in oxygenated monoterpenes (62 – 96%) whereas EO of D. viscosa was mainly composed of oxygenated sesquiterpenes (54%). All EOs showed antimicrobial activity; M. pulegium and E. globulus generally had the strongest antimicrobial activity. EO of C. nepeta was the most promising in hampering the biofilm formation. The combinations D. viscosa/C. nepeta and E. globulus/ T. mastichina were synergistic against Staphylococcus aureus. These results support the notion that EOs from the aromatic plants herein reported should be further explored as potential pharmaceuticals and/or food preservatives.
URI: http://hdl.handle.net/10174/22131
Type: article
Appears in Collections:ICAAM - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
HERCULES - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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