title: Composition and repellency of the essential oils of Evodia calcicola Chun ex Huang and Evodia trichotoma (Lour.) Pierre against three stored product insects.
abstract: During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oils of Evodia calcicola and Evodia trichotoma leaves were found to possess strong repellency against the red flour beetle Tribolium castaneum adults, the cigarette beetle Lasioderma serricorne adults and the booklouse Liposcelis bostrychophila. The two essential oils obtained by hydrodistillation were investigated by GC-MS. The main components of E. calcicola essential oil were identified to be (-)-β-pinene (44.02%), β-phellandrene (20.93%), ocimene (16.49%), and D-limonene (9.87%). While the main components of the essential oil of E. trichotoma were D-limonene (69.55%), 1R-a-pinene (11.48%), caryophyllene (2.80%) and spathulenol (2.24%). Data showed that T. castaneum was the most sensitive than other two stored product insects. Compared with the positive control, DEET (N, N-diethyl-3- methylbenzamide), the two essential oils showed the same level repellency against the red flour beetle. However, the essential oil of E. trichotoma showed the same level repellency against the cigarette beetle, while E. calcicola essential oil possessed the less level repellency against L. serricorne, relative to the positive control, DEET. Moreover, the two crude oils also exhibited strong repellency against L. bostrychophila, but lesser level repellency than the positive control, DEET. Thus, the essential oils of E. calcicola and E. trichotoma may be potential to be developed as a new natural repellent in the control of stored product insects.
authors.affiliation: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Haidian District.
authors.forename: Kai
authors.initials: K
authors.lastname: Yang
authors.forename: Chun-Xue
authors.initials: CX
authors.lastname: You
authors.forename: Cheng-Fang
authors.initials: CF
authors.lastname: Wang
authors.forename: Shan-Shan
authors.initials: SS
authors.lastname: Guo
authors.forename: Yin-Ping
authors.initials: YP
authors.lastname: Li
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
authors.forename: Zhu-Feng
authors.initials: ZF
authors.lastname: Geng
authors.forename: Zhi-Wei
authors.initials: ZW
authors.lastname: Deng
authors.forename: Shu-Shan
authors.initials: SS
authors.lastname: Du
mesh_terms: D000818:Animals; D001517:Coleoptera / Q000187:drug effects*; D057168:Distillation / Q000379:methods; D032086:Evodia / Q000737:chemistry*; D007302:Insect Repellents; D007306:Insecticides; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D008003:Phthiraptera / Q000187:drug effects*; D018515:Plant Leaves / Q000737:chemistry*; D014231:Tribolium / Q000187:drug effects*
chemical_list: D007302:Insect Repellents; D007306:Insecticides; D009822:Oils, Volatile