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Antibacterial activities of essential oils from eight Greek aromatic plants against clinical isolates of Staphylococcus aureus.
Anaerobe. 2011 Dec; 17(6):399-402.A

Abstract

Aromatic plants have been used widely to extend the shelf life of foods but at the same time research is undergoes for their properties as antibacterial agents in clinical use. Although there are promising results for the antimicrobial properties of various essential oils against environmental or food-isolated strains of Staphylococcus aureus, limited work has been done concerning these properties against clinical isolates of this pathogen. S. aureus is responsible for an increase number of nosocomial infections and at the same time exhibits increased resistance to synthetic agents. In this study, essential oils from eight aromatic plants common in Greece were isolated by hydrodistillation, analyzed by gas chromatography (GC) and GC/mass spectrometry (GC/MS) for their chemical components and tested for their antimicrobial activities against 24 clinical isolates of S. aureus. The methods used were disk diffusion and broth dilution in order to determine the Minimum Inhibitory Concentration (MIC). Our results showed that essential oils from Origanum vulgare and Origanum dictamnus were active against S. aureus when tested by disk diffusion, but exhibited increased MIC values (>256 mg/L) with the dilution method. In contrast, the reference strain NCTC 6571 showed to be extremely sensitive in most of the oils tested (MICs 0.25-32.0 mg/L) and resistant only to the essential oil from Ocimum basilicum. Therefore, there is no evidence of a potential clinical use for those essential oils and further research is needed in order to determine if they could substitute efficiently synthetic antibiotics or, perhaps be used in combination.

Authors+Show Affiliations

Democritus University of Thrace, Faculty of Agricultural Development, Laboratory of Microbiology, Biotechnology and Hygiene, 193 Pandazidou Str., GR68200 Orestiada, Greece. alexopo@agro.duth.grNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21521657

Citation

Alexopoulos, A, et al. "Antibacterial Activities of Essential Oils From Eight Greek Aromatic Plants Against Clinical Isolates of Staphylococcus Aureus." Anaerobe, vol. 17, no. 6, 2011, pp. 399-402.
Alexopoulos A, Kimbaris AC, Plessas S, et al. Antibacterial activities of essential oils from eight Greek aromatic plants against clinical isolates of Staphylococcus aureus. Anaerobe. 2011;17(6):399-402.
Alexopoulos, A., Kimbaris, A. C., Plessas, S., Mantzourani, I., Theodoridou, I., Stavropoulou, E., Polissiou, M. G., & Bezirtzoglou, E. (2011). Antibacterial activities of essential oils from eight Greek aromatic plants against clinical isolates of Staphylococcus aureus. Anaerobe, 17(6), 399-402. https://doi.org/10.1016/j.anaerobe.2011.03.024
Alexopoulos A, et al. Antibacterial Activities of Essential Oils From Eight Greek Aromatic Plants Against Clinical Isolates of Staphylococcus Aureus. Anaerobe. 2011;17(6):399-402. PubMed PMID: 21521657.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antibacterial activities of essential oils from eight Greek aromatic plants against clinical isolates of Staphylococcus aureus. AU - Alexopoulos,A, AU - Kimbaris,A C, AU - Plessas,S, AU - Mantzourani,I, AU - Theodoridou,I, AU - Stavropoulou,E, AU - Polissiou,M G, AU - Bezirtzoglou,E, Y1 - 2011/04/16/ PY - 2010/12/19/received PY - 2011/03/12/revised PY - 2011/03/14/accepted PY - 2011/4/28/entrez PY - 2011/4/28/pubmed PY - 2012/3/22/medline SP - 399 EP - 402 JF - Anaerobe JO - Anaerobe VL - 17 IS - 6 N2 - Aromatic plants have been used widely to extend the shelf life of foods but at the same time research is undergoes for their properties as antibacterial agents in clinical use. Although there are promising results for the antimicrobial properties of various essential oils against environmental or food-isolated strains of Staphylococcus aureus, limited work has been done concerning these properties against clinical isolates of this pathogen. S. aureus is responsible for an increase number of nosocomial infections and at the same time exhibits increased resistance to synthetic agents. In this study, essential oils from eight aromatic plants common in Greece were isolated by hydrodistillation, analyzed by gas chromatography (GC) and GC/mass spectrometry (GC/MS) for their chemical components and tested for their antimicrobial activities against 24 clinical isolates of S. aureus. The methods used were disk diffusion and broth dilution in order to determine the Minimum Inhibitory Concentration (MIC). Our results showed that essential oils from Origanum vulgare and Origanum dictamnus were active against S. aureus when tested by disk diffusion, but exhibited increased MIC values (>256 mg/L) with the dilution method. In contrast, the reference strain NCTC 6571 showed to be extremely sensitive in most of the oils tested (MICs 0.25-32.0 mg/L) and resistant only to the essential oil from Ocimum basilicum. Therefore, there is no evidence of a potential clinical use for those essential oils and further research is needed in order to determine if they could substitute efficiently synthetic antibiotics or, perhaps be used in combination. SN - 1095-8274 UR - https://www.unboundmedicine.com/medline/citation/21521657/Antibacterial_activities_of_essential_oils_from_eight_Greek_aromatic_plants_against_clinical_isolates_of_Staphylococcus_aureus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1075-9964(11)00049-7 DB - PRIME DP - Unbound Medicine ER -