Comparative Larvicidal Activity of Essential Oils from Three Medicinal Plants against Aedes aegypti L

• Published in: Chemistry & biodiversity Vol. 7; no. 11; pp. 2801 - 2807
• Main Authors: Freitas, Flávia P., Freitas, Silvério P., Lemos, Gloria C. S., Vieira, Ivo J. C., Gravina, Geraldo A., Lemos, Francisco J. A.
• Format: Journal Article
• Language: English
• Published: Zürich WILEY-VCH Verlag 01.11.2010; WILEY‐VCH Verlag
• Subjects: Aedes - growth & development; Aedes aegypti; Alpinia; Alpinia - chemistry; Alpinia speciosa; Animals; Cymbopogon - chemistry; Cymbopogon citratus; Essential oils; Insecticides - chemistry; Insecticides - isolation & purification; Larva - drug effects; Larvicidal activity; Oils, Volatile - chemistry; Oils, Volatile - isolation & purification; Plant Leaves - chemistry; Plants, Medicinal - chemistry; Rosmarinus - chemistry; Rosmarinus officinalis
• ISSN: 1612-1872; 1612-1880; 1612-1880
• DOI: 10.1002/cbdv.200900260

This work aimed at comparing larvicidal activity of essential oils extracted from the dried leaves of Alpinia speciosa, Cymbopogon citratus, and Rosmarinus officinalis against Ae. aegypti larvae. The larvae were observed for 4 h and at 24 h according to a completely randomized design with three replications and the following concentrations [μl/ml]: 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and controls were distilled water, and commercial standard citral, camphor, eucalyptol, α‐pinene, and β‐myrcene. The essential oil of C. citratus had the lowest LC50 (0.28) and LC90 (0.56) values, followed by that of A. speciosa (0.94 and 1.2, resp.) and of R. officinalis (1.18 and 1.67, resp.), and only the commercial standards citral and α‐pinene were larvicidal.