Chemical Composition and Toxicity against Sitophilus zeamais and Tribolium castaneum of the Essential Oil of Murraya exotica Aerial Parts

Molecules

Wei Qing Li¹  Cai Hong Jiang¹  Sha Sha Chu¹  Ming Xue Zuo¹ 

[1] ¹College of Life Sciences, Beijing Normal University, Haidian District, Beijing 100875, China ²College of Chemical and Biological Engineering, Changsha University of Science and Technology, Changsha 41004, China ³Department of Entomology, China Agricultural University, Haidian District, Beijing 100094, China

关键词: Murraya exotica;    Sitophilus zeamais;    Tribolium castaneum;    fumigant;    contact toxicity;    essential oil;   

DOI  :  10.3390/molecules15085831

来源: mdpi

【 摘 要 】

In our screening program for new agrochemicals from Chinese medicinal herbs, Murraya exotica was found to possess insecticidal activity against the maize weevil, Sitophilus zeamais and red flour beetle, Tribolium castaneum. The essential oil of aerial parts of M. exotica was obtained by hydrodistillation and investigated by GC and GC-MS. The main components of M. exotica essential oil were spathulenol (17.7%), a-pinene (13.3%), caryophyllene oxide (8.6%), and a-caryophyllene (7.3%). Essential oil of M. exotica possessed fumigant toxicity against S. zeamais and T. castaneum adults with LC₅₀ values of 8.29 and 6.84 mg/L, respectively. The essential oils also show contact toxicity against S. zeamais and T. castaneum adults with LD₅₀ values of 11.41 and 20.94 mg/adult, respectively.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.