Chemical compositions and larvicidal activities of leaf essential oils from two eucalyptus species

In the current study, the mosquito larvicidal activity of leaf essential oils and their constituents from two eucalyptus species ( Eucalyptus camaldulensis and Eucalyptus urophylla) against two mosquito species, Aedes aegypti and Aedes albopictus, was investigated. In addition, the chemical composit...

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Bibliographic Details
Published in:Bioresource technology 2009, Vol.100 (1), p.452-456
Main Authors: Cheng, Sen-Sung, Huang, Chin-Gi, Chen, Ying-Ju, Yu, Jane-Jane, Chen, Wei-June, Chang, Shang-Tzen
Format: Article
Language:English
Subjects:
Aedes aegypti
Aedes albopictus
Animals
Biological and medical sciences
chemical constituents of plants
Culicidae - drug effects
Essential oils
Eucalyptus
Eucalyptus - classification
Eucalyptus - metabolism
Eucalyptus camaldulensis
Eucalyptus urophylla
forest trees
Fundamental and applied biological sciences. Psychology
gas chromatography
insecticidal properties
Insecticides - administration & dosage
Insecticides - chemistry
Larva - drug effects
larvae
larvicides
leaves
mass spectrometry
Oils, Volatile - chemistry
Oils, Volatile - pharmacology
pesticidal plants
Plant Extracts - administration & dosage
Plant Extracts - chemistry
Plant Leaves - classification
Plant Leaves - metabolism
Survival Rate
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Summary:In the current study, the mosquito larvicidal activity of leaf essential oils and their constituents from two eucalyptus species ( Eucalyptus camaldulensis and Eucalyptus urophylla) against two mosquito species, Aedes aegypti and Aedes albopictus, was investigated. In addition, the chemical compositions of the leaf essential oils were analyzed using gas chromatography–mass spectrometry. Results from the larvicidal tests revealed that essential oil from the leaves of E. camaldulensis had an excellent inhibitory effect against both A. aegypti and A. albopictus larvae. The 12 pure constituents extracted from the two eucalyptus leaf essential oils were also tested individually against two mosquito larvae. Among the six effective constituents, α-terpinene exhibits the best larvicidal effect against both A. aegypti and A. albopictus larvae. Results of this study show that the leaf essential oil of E. camaldulensis and its effective constituents might be considered as a potent source for the production of fine natural larvicides.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2008.02.038