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Antibacterial activities of plant essential oils against Legionella pneumophila.
Water Res. 2008 Jan; 42(1-2):278-86.WR

Abstract

The objective of this study was to determine the antimicrobial activity of essential oils (EOs) extracted from Cinnamomum osmophloeum leaves and different tissues of Cryptomeria japonica against pathogenic Legionella pneumophila at 42 degrees C. Ten kinds of EOs were extracted by water distillation and their chemical constituents were quantified by gas chromatography-mass spectroscopy (GC-MS). The results showed that cinnamon leaf EO possessed stronger anti-L. pneumophila activity than C. japonica EO. In particular, the highest bactericidal effect was noted in contact with C. osmophloeum leaf EO of cinnamaldehyde type (characterized by its major constituent of cinnamaldehyde accounting for 91.3% of EO), regardless of contacted cell concentration (2 and 4 log CFU ml(-1)) or exposure time (10 and 60 min). Cinnamaldehyde is responsible for anti-L. pneumophila activity based on the results of antimicrobial testing and statistical analysis. Stepwise regression analyses show that EO concentration is the most significant factor affecting the bioactivity of EO. It is concluded that C. osmophloeum leaf oil of cinnamaldehyde type and its major constituent, cinnamaldehyde, possess strong anti-L. pneumophila activities, and have the great potential to be used as an antibacterial agent to control legionellosis associated with hot tubs and spa facilities widely used in homes and resorts.

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Authors+Show Affiliations

Chang CW
Institute of Environmental Health, College of Public Health, National Taiwan University, Taipei 100, Taiwan, Republic of China. chingwenchang@ntu.edu.tw
Chang WL
No affiliation info available
Chang ST
No affiliation info available
Cheng SS
No affiliation info available

MeSH

AcroleinAnti-Bacterial AgentsCinnamomumColony Count, MicrobialCryptomeriaHot TemperatureLegionella pneumophilaLegionellosisOils, VolatilePlant BarkPlant LeavesPlant OilsPlant StemsWood

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17659763

Citation

Chang, Ching-Wen, et al. "Antibacterial Activities of Plant Essential Oils Against Legionella Pneumophila." Water Research, vol. 42, no. 1-2, 2008, pp. 278-86.
Chang CW, Chang WL, Chang ST, et al. Antibacterial activities of plant essential oils against Legionella pneumophila. Water Res. 2008;42(1-2):278-86.
Chang, C. W., Chang, W. L., Chang, S. T., & Cheng, S. S. (2008). Antibacterial activities of plant essential oils against Legionella pneumophila. Water Research, 42(1-2), 278-86.
Chang CW, et al. Antibacterial Activities of Plant Essential Oils Against Legionella Pneumophila. Water Res. 2008;42(1-2):278-86. PubMed PMID: 17659763.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antibacterial activities of plant essential oils against Legionella pneumophila. AU - Chang,Ching-Wen, AU - Chang,Wei-Lung, AU - Chang,Shang-Tzen, AU - Cheng,Sen-Sung, Y1 - 2007/07/14/ PY - 2006/10/26/received PY - 2007/06/14/revised PY - 2007/07/11/accepted PY - 2007/7/31/pubmed PY - 2008/3/14/medline PY - 2007/7/31/entrez SP - 278 EP - 86 JF - Water research JO - Water Res VL - 42 IS - 1-2 N2 - The objective of this study was to determine the antimicrobial activity of essential oils (EOs) extracted from Cinnamomum osmophloeum leaves and different tissues of Cryptomeria japonica against pathogenic Legionella pneumophila at 42 degrees C. Ten kinds of EOs were extracted by water distillation and their chemical constituents were quantified by gas chromatography-mass spectroscopy (GC-MS). The results showed that cinnamon leaf EO possessed stronger anti-L. pneumophila activity than C. japonica EO. In particular, the highest bactericidal effect was noted in contact with C. osmophloeum leaf EO of cinnamaldehyde type (characterized by its major constituent of cinnamaldehyde accounting for 91.3% of EO), regardless of contacted cell concentration (2 and 4 log CFU ml(-1)) or exposure time (10 and 60 min). Cinnamaldehyde is responsible for anti-L. pneumophila activity based on the results of antimicrobial testing and statistical analysis. Stepwise regression analyses show that EO concentration is the most significant factor affecting the bioactivity of EO. It is concluded that C. osmophloeum leaf oil of cinnamaldehyde type and its major constituent, cinnamaldehyde, possess strong anti-L. pneumophila activities, and have the great potential to be used as an antibacterial agent to control legionellosis associated with hot tubs and spa facilities widely used in homes and resorts. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/17659763/Antibacterial_activities_of_plant_essential_oils_against_Legionella_pneumophila_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(07)00470-8 DB - PRIME DP - Unbound Medicine ER -