title: Larvicidal effects of the major essential oil of Pittosporum tobira against Aedes aegypti (L.).
abstract: Essential oil obtained from the leaves of Pittosporum tobira was extracted and its chemical composition and larvicidal effects were studied. Analyses were conducted by gas chromatography and mass spectroscopy (GC-MS) to determine the primary constituents of the essential oil of P. tobira. The yield of P. tobira essential oil (PTEO) was 0.1%, and GC-MS analysis identified its major constituents as undecane (31.11%), 4-methyl-1,3-pentadiene (11.34%), (1,3-dimethyl-2-butenyl)benzene (5.45%), and L-limonene (14.08%). The essential oil had a significant toxic effect against early fourth-stage larvae of Aedes aegypti (L.), with an LC(50) value of 58.92 ppm and an LC(90) value of 111.31 ppm. Finally, the LC(50) and LC(90) values of L-limonene were 39.7 ppm and 78.11 ppm. These results could be useful for seeking newer, safer, and more effective natural larvicidal agents against A. aegypti.
authors.affiliation: Department of Applied Life Science, Kon Kuk University, Seoul, South Korea.
authors.forename: Ill-Min
authors.initials: IM
authors.lastname: Chung
authors.forename: Su-Hyun
authors.initials: SH
authors.lastname: Seo
authors.forename: Eun-Young
authors.initials: EY
authors.lastname: Kang
authors.forename: Won-Hwan
authors.initials: WH
authors.lastname: Park
authors.forename: Hyung-In
authors.initials: HI
authors.lastname: Moon
mesh_terms: D000330:Aedes / Q000187:drug effects*; D000818:Animals; D008401:Gas Chromatography-Mass Spectrometry; D007306:Insecticides / Q000302:isolation & purification; D007814:Larva / Q000187:drug effects*; D009032:Mosquito Control / Q000379:methods; D009822:Oils, Volatile / Q000032:analysis / Q000302:isolation & purification / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry; D010938:Plant Oils / Q000032:analysis / Q000302:isolation & purification / Q000494:pharmacology*; D019685:Rosales / Q000737:chemistry*
chemical_list: D007306:Insecticides; D009822:Oils, Volatile; D010938:Plant Oils