Insecticidal and Repellent Activities of Essential Oil from Leaves of Eucalyptus grandis Against Culex pipiens quinquefasciatus

Yu Hong Tian; Xian Chuang Zhou; Xiao Liu Zhou; Qiong Huang

doi:10.4028/www.scientific.net/AMR.233-235.82

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p.82

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Insecticidal and Repellent Activities of Essential...

Insecticidal and Repellent Activities of Essential Oil from Leaves of Eucalyptus grandis Against Culex pipiens quinquefasciatus

Abstract:

The insecticidal and repellent activities of essential oil from leaves of Eucalyptus grandis against Culex pipiens quinquefasciatus were investigated. The essential oil was obtained by hydro-distillation and analyzed by gas chromatography-mass spectrometry (GC-MS). The principal constituents in the essential oil were p-cymene (26.794%), α-pinene (15.864%), eucalyptol (6.281%), α-terpineol (4.100%), limonene (3.614%) and borneol (2.519%). The results indicated that the essential oil of Eucalyptus grandis leaves hold insecticidal and repellent activities against Culex pipiens quinquefasciatus. The complete protection time for people against Culex pipiens quinquefasciatus was correlative with its concentration. It could protect people for 7h when its concentration was 50%. Fumigating insecticidal activity was evaluated by airtight fumigation in conical flask. The LC₅₀ values of the essential oil for adults of Culex pipiens quinquefasciatus were 4.5%(0.5h), 3.6%(1h), 2.6%(2h), 2.1%(4h), 0.56%(8h) and 0.56%(24h). The LT₅₀ value of the essential oil was 19.1 min when its concentration was 6.4%.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

82-86

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.82

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Online since:

May 2011

Authors:

Yu Hong Tian, Xian Chuang Zhou, Xiao Liu Zhou, Qiong Huang

Keywords:

Culex pipiens quinquefasciatus, Essential Oil, Eucalyptus grandis, Gas Chromatography-Mass Spectrometry (GC-MS), Insecticidal, Repellent

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