Leakage of K + ions from Staphylococcus aureus in response to tea tree oil

The leakage of K + ions from Staphylococcus aureus in response to tea tree oil (TTO) was investigated with an ion-selective electrode. The amount of leaked K + ions and the rate of leakage of K + ions induced by TTO were dependent on the concentration of TTO. Measurements of initial rates required l...

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Bibliographic Details
Published in:Journal of microbiological methods 2003-06, Vol.53 (3), p.309-312
Main Authors: Hada, Toshiko, Inoue, Yoshihiro, Shiraishi, Akiko, Hamashima, Hajime
Format: Article
Language:English
Subjects:
Anti-Infective Agents, Local - pharmacology
Bacteriology
Biological and medical sciences
Cell membrane
Fundamental and applied biological sciences. Psychology
Ion Transport - drug effects
K +-selective electrode
Microbiology
Miscellaneous
Potassium - analysis
Potassium - metabolism
Staphylococcus aureus
Staphylococcus aureus - drug effects
Staphylococcus aureus - metabolism
Tea tree oil
Tea Tree Oil - pharmacology
Time Factors
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Summary:The leakage of K + ions from Staphylococcus aureus in response to tea tree oil (TTO) was investigated with an ion-selective electrode. The amount of leaked K + ions and the rate of leakage of K + ions induced by TTO were dependent on the concentration of TTO. Measurements of initial rates required less time than measurements of total amounts and provided an index of the interaction between TTO and the cell membrane. Thus, the initial rate of leakage might be a more useful measure of the antibacterial activity of TTO than the total amount.
ISSN:0167-7012
1872-8359
DOI:10.1016/S0167-7012(02)00248-8