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Medicines 2015, 2(4), 331-339; doi:10.3390/medicines2040331

Compositional Variation and Bioactivity of the Leaf Essential Oil of Montanoa guatemalensis from Monteverde, Costa Rica: A Preliminary Investigation

Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA
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Author to whom correspondence should be addressed.
Academic Editor: Satyajit D. Sarker
Received: 22 October 2015 / Revised: 11 November 2015 / Accepted: 17 November 2015 / Published: 24 November 2015
(This article belongs to the Special Issue Essential Oils: Chemistry and Bioactivity)
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Abstract

Background: Montanoa guatemalensis is a small to medium-sized tree in the Asteraceae that grows in Central America from Mexico south through Costa Rica. There have been no previous investigations on the essential oil of this tree. Methods: The leaf essential oils of M. guatemalensis were obtained from different individual trees growing in Monteverde, Costa Rica, in two different years, and were analyzed by gas chromatography—mass spectrometry. Results: The leaf oils from 2008 were rich in sesquiterpenoids, dominated by α-selinene, β-selinene, and cyclocolorenone, with lesser amounts of the monoterpenes α-pinene and limonene. In contrast, the samples from 2009 showed no α- or β-selinene, but large concentrations of trans-muurola-4(14),5-diene, β-cadinene, and cyclocolorenone, along with greater concentrations of α-pinene and limonene. The leaf oils were screened for cytotoxic and antimicrobial activities and did show selective cytotoxic activity on MDA-MB-231 breast tumor cells. Conclusion: M. guatemalensis leaf oil, rich in cyclocolorenone, α-selinene, and β-selinene, showed selective in vitro cytotoxic activity to MDA-MB-231 cells. The plant may be a good source of cyclocolorenone. View Full-Text
Keywords: essential oil composition; cyclocolorenone; selinene; muuroladiene; cadinene; limonene; pinene; cytotoxicity essential oil composition; cyclocolorenone; selinene; muuroladiene; cadinene; limonene; pinene; cytotoxicity
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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

Flatt, V.D.; Campos, C.R.; Kraemer, M.P.; Bailey, B.A.; Satyal, P.; Setzer, W.N. Compositional Variation and Bioactivity of the Leaf Essential Oil of Montanoa guatemalensis from Monteverde, Costa Rica: A Preliminary Investigation. Medicines 2015, 2, 331-339.

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