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Molecules 2015, 20(9), 15735-15747; doi:10.3390/molecules200915735

Chemical Composition and Bioactivities of the Essential Oil from Etlingera yunnanensis against Two Stored Product Insects

Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Beijing Normal University, No.19 Xinjiekouwai Street, Beijing 100875, China
Analytical and Testing Center, Beijing Normal University, Beijing 100875, China
Department of Pharmacy General Hospital of Second Artillery, PLA, Haidian District, Beijing 100088, China
Authors to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 14 July 2015 / Revised: 8 August 2015 / Accepted: 21 August 2015 / Published: 28 August 2015
(This article belongs to the Collection Herbal Medicine Research)
View Full-Text   |   Download PDF [836 KB, uploaded 28 August 2015]   |  


The chemical composition of the essential oil of Etlingera yunnanensis rhizomes and its contact and repellent activities against Tribolium castaneum (Herbst) and Liposcelis bostrychophila (Badonnel) were investigated. The essential oil obtained from E. yunnanensis rhizomes with hydrodistillation was performed by gas chromatography-flame ionization detection and gas chromatography-mass spectrometry. The main components of the essential oil were identified to be estragole (65.2%), β-caryophyllene (6.4%), 1,8-cineole (6.4%), limonene (5.2%), and α-pinene (2.4%). It was found that the essential oil of E. yunnanensis rhizomes possessed contact toxicity against T. castaneum and L. bostrychophila (LD50 = 23.33 μg/adult and LD50 = 47.38 μg/cm2, respectively). Estragole, 1,8-cineole, and limonene exhibited stronger contact toxicity (LD50 values of 20.41, 18.86, and 13.40 μg/adult, respectively) than β-caryophyllene (LD50 = 41.72 μg/adult) against T. castaneum adults. Estragole possessed stronger contact toxicity (LD50 = 30.22 µg/cm2) than β-caryophyllene, 1,8-cineole, and limonene (LD50 values of 74.11, 321.20, and 239.62 μg/adult, respectively) against L. bostrychophila adults. Repellency of the crude oil was also evaluated. The essential oil and constituents possessed strong repellent activity against T. castaneum adults. The four individual constituents showed weaker repellent activity than the essential oil against L. bostrychophila adults. The results indicated that the essential oil of E. yunnanensis rhizomes and the individual constituents had the potential to be developed as a natural insecticide and repellent for the control of T. castaneum and L. bostrychophila. View Full-Text
Keywords: Etlingera yunnanensis; contact activity; repellency; composition; stored product insects Etlingera yunnanensis; contact activity; repellency; composition; stored product insects

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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

Guo, S.-S.; You, C.-X.; Liang, J.-Y.; Zhang, W.-J.; Geng, Z.-F.; Wang, C.-F.; Du, S.-S.; Lei, N. Chemical Composition and Bioactivities of the Essential Oil from Etlingera yunnanensis against Two Stored Product Insects. Molecules 2015, 20, 15735-15747.

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