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Molecules 2014, 19(12), 20929-20940; doi:10.3390/molecules191220929

The Biological Activities of Cinnamon, Geranium and Lavender Essential Oils

1
Environmental Biology Department, Medical University of Lodz, ul Żeligowskiego 7/9, Lodz 90-752, Poland
2
Pharmacology and Toxicology Department, Medical University of Lodz, ul Żeligowskiego 7/9, Lodz 90-752, Poland
3
Department of Microbiology and Medical Laboratory Immunology, Medical University of Lodz, ul Pomorska 251, Lodz 92-213, Poland
*
Author to whom correspondence should be addressed.
Received: 24 October 2014 / Revised: 24 November 2014 / Accepted: 3 December 2014 / Published: 12 December 2014
(This article belongs to the Collection Bioactive Compounds)
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Abstract

Acinetobacter sp. represent an important cause of nosocomial infections. Their resistance to some antibiotics, their ability to survive on inanimate surfaces in the hospital environment and their ability to produce biofilms contributes to their virulence. The aim of the study was to determine the antibacterial properties of cinnamon, lavender and geranium essential oils against bacteria of the genus Acinetobacter isolated from several clinical materials and from the hospital environment. A comprehensive evaluation of the susceptibility of Acinetobacter sp. clinical strains to recommended antibiotics was performed. The constituents of cinnamon, lavender and geranium essential oils were identified by GC-FID-MS analysis, and their Minimal Inhibitory Concentrations (MICs) against tested clinical strains were determined by the micro-dilution broth method. In addition, the effects of essential oils on the viability of human microvascular endothelial cells (HMEC-1) and glioblastoma cell line (T98G) were evaluated. Cinnamon bark oil was the most active against clinical and environmental strains of Acinetobacter baumannii with MIC values ranging from 0.5 to 2.5 µL/mL. The MIC values for geranium oil were between 7.5 and 9.5 µL/mL, and between 10.5 and 13.0 µL/mL for lavender oil. These essential oils can be best employed in the fight against infections caused by bacteria from Acinetobacter genus as components of formulations for hygiene and disinfection of hospital environment. View Full-Text
Keywords: Acinetobacter sp.; cinnamon oil; ESBL-positive strains; geranium oil; Minimal Inhibitory Concentration; lavender oil Acinetobacter sp.; cinnamon oil; ESBL-positive strains; geranium oil; Minimal Inhibitory Concentration; lavender oil
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sienkiewicz, M.; Głowacka, A.; Kowalczyk, E.; Wiktorowska-Owczarek, A.; Jóźwiak-Bębenista, M.; Łysakowska, M. The Biological Activities of Cinnamon, Geranium and Lavender Essential Oils. Molecules 2014, 19, 20929-20940.

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