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Aromatherapy Research News

Wednesday, November 07, 2007

Lavender Essential Oil Stops Mice From Fighting - Really!

Anticonflict effects of lavender oil and identification of its active constituents.

Umezu T, Nagano K, Ito H, Kosakai K, Sakaniwa M, Morita M.

Environmental Chemistry Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-0053, Japan.

The pharmacological effects of lavender oil were investigated using two conflict tests in ICR mice, and then the active constituents were identified. Lavender oil produced significant anticonflict effects at 800 and 1600 mg/kg in the Geller conflict test and at 800 mg/kg in the Vogel conflict test, suggesting that the oil has an anti-anxiety effect. Analysis using GC/MS revealed that lavender oil contains 26 constituents, among which alpha-pinene (ratio, 0.22%), camphene (0.06%), beta-myrcene (5.33%), p-cymene (0.3%), limonene (1.06%), cineol (0.51%), linalool (26.12%), borneol (1.21%), terpinene-4-ol (4.64%), linalyl acetate (26.32%), geranyl acetate (2.14%) and caryophyllene (7.55%) were identified. We examined the effects of linalool, linalyl acetate, borneol, camphene, cineol, terpinen-4-ol, alpha-pinene and beta-myrcene using the Geller and Vogel conflict tests in ICR mice. Cineol, terpinen-4-ol, alpha-pinene and beta-myrcene did not produce any significant anticonflict effects in the Geller test. Linalyl acetate did not produce any significant anticonflict effects in either test. Both borneol and camphene at 800 mg/kg produced significant anticonflict effects in the Geller, but not in the Vogel conflict test. Linalool, a major constituent of lavender oil, produced significant anticonflict effects at 600 and 400 mg/kg in the Geller and Vogel tests, respectively, findings that were similar to those of lavender oil. Thus, we concluded that linalool is the major pharmacologically active constituent involved in the anti-anxiety effect of lavender oil.

Editor's Note: It has long been known that the aroma of lavender oil can reduce anxiety, an effect we've noted many times ourselves while sitting at the computer all day :-) What's particularly interesting is that Linalool has been found to be the component that produces the majority of this effect. Linalool is found in other essential oils as well, particularly the Linalool chemotypes of Basil and Thyme essential oils - both 'sweeter' varieties than others of the same plant species.

*The FDA has not evaluated the statements on this website. The information presented here is for educational purposes of traditional uses and is not intended to diagnose, treat, cure, or prevent any diseases.

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