title: Chemical composition and insecticidal activity of the essential oil of Amethystea caerulea L.
abstract: The essential oil of the aerial parts of Amethystea caerulea L. was obtained from steam distillation and investigated by GC and GC-MS. The main components of the essential oil were morrilol (25.1%), 4-vinylguaiacol (14.3%) and acetoanisole (14.3%), followed by linalool (6.6%), eugenol (5.8%) and α-caryophyllene (5.2%). The essential oil showed pronounced contact toxicity against Drosophila melanogaster L. and maize weevil, Sitophilus zeamais (Motsch.), with LD(50) values of 5.18 and 50.45 µg per adult, respectively. The essential oil also possessed strong fumigant toxicity against the maize weevils with an LC(50) value of 25.39 µg mL(-1).
authors: Department of Entomology, China Agricultural University, 2 Yuanmingyuan West Road, Haidian District, Beijing, China.
authors: Sha Sha
authors: SS
authors: Chu
authors: Quan Ru
authors: QR
authors: Liu
authors: Guo Hua
authors: GH
authors: Jiang
authors: Zhi Long
authors: ZL
authors: Liu
mesh_terms: D000818:Animals; D008401:Gas Chromatography-Mass Spectrometry; D007306:Insecticides / Q000737:chemistry* / Q000494:pharmacology*; D019686:Lamiaceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry* / Q000494:pharmacology*; D035261:Plant Components, Aerial / Q000737:chemistry*; D048889:Weevils / Q000187:drug effects*
chemical_list: D007306:Insecticides; D009822:Oils, Volatile