Sedative effects of the jasmine tea odor and (R)-(-)-linalool, one of its major odor components, on autonomic nerve activity and mood states

We investigated the effects of the odor of jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R-R intervals...

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Bibliographic Details
Published in:European journal of applied physiology 2005-10, Vol.95 (2-3), p.107-114
Main Authors: Kuroda, Kyoko, Inoue, Naohiko, Ito, Yuriko, Kubota, Kikue, Sugimoto, Akio, Kakuda, Takami, Fushiki, Tohru
Format: Article
Language:English
Subjects:
Administration, Inhalation
Adult
Affect - drug effects
Aromatherapy - psychology
Autonomic Nervous System - drug effects
Camellia sinensis
Female
Flowers
Heart rate
Heart Rate - drug effects
Humans
Hypnotics and Sedatives - pharmacology
Jasminum
Lavandula
Male
Monoterpenes - pharmacology
Odorants
Oils, Volatile
Plant Oils
Plant Preparations - pharmacology
Stereoisomerism
Tea
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Summary:We investigated the effects of the odor of jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R-R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control (P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of (R)-(-)-linalool, one of its major odor components, at the same concentration as in the tea, and (S)-(+)-linalool. Only (R)-(-)-linalool elicited a significant decrease in heart rate (P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and (R)-(-)-linalool, one of its components, can mimic these effects.
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-005-1402-8