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

Molecules

Shan-Shan Guo¹  Chun-Xue You¹  Jun-Yu Liang¹  Wen-Juan Zhang¹  Zhu-Feng Geng¹  Cheng-Fang Wang¹  Shu-Shan Du¹  Ning Lei² 

[1] Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Beijing Normal University, No.19 Xinjiekouwai Street, Beijing 100875, China; E-Mails:;Department of Pharmacy General Hospital of Second Artillery, PLA, Haidian District, Beijing 100088, China

关键词: Etlingera yunnanensis;    contact activity;    repellency;    composition;    stored product insects;   

DOI  :  10.3390/molecules200915735

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
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