Larvicidal effects of the major essential oil of Pittosporum tobira against Aedes aegypti (L.).
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.
Chung
Ill-Min
IM
Department of Applied Life Science, Kon Kuk University, Seoul, South Korea.
Seo
Su-Hyun
SH
Kang
Eun-Young
EY
Park
Won-Hwan
WH
Moon
Hyung-In
HI
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*
D007306:Insecticides; D009822:Oils, Volatile; D010938:Plant Oils