CHEMICAL COMPOSITION, ADULTICIDAL AND REPELLENT ACTIVITY OF ESSENTIAL OILS FROM Mentha longifolia L. AND Lavandula dentata L. AGAINST Culex pipiens L.

Al-Sarar, Ali

doi:10.21608/jppp.2014.87995

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	CHEMICAL COMPOSITION, ADULTICIDAL AND REPELLENT ACTIVITY OF ESSENTIAL OILS FROM Mentha longifolia L. AND Lavandula dentata L. AGAINST Culex pipiens L.
Article 1, Volume 5, Issue 7, July 2014, Page 817-826 PDF (407.38 K)
Document Type: Original Article
DOI: 10.21608/jppp.2014.87995
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Author
Ali Al-Sarar^*
Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
Abstract
The essential oils from Mentha longifolia L., and Lavandula dentata L. were evaluated for their insecticidal and repellent activity against adult females of Culex pipiens L. The two oils showed LC₅₀ values of 0.215and 0.217 µl / l, respectively. Lavandula dentata oil showed higher repellent activity than Mentha longifolia oil against adults of Culex pipiens; paraffin oil significantly prolonged the time of protection for the two oils. The longest time of protection was 165 min for L dentata oil, at 1 µl/cm², when the tested oils were applied in paraffin oil. The principle compounds in the two oils were pulegone, l-menthone, 1-8-cineole, eucarvone and borneol for (M. longifolia); and camphor, fenchone, linalool and fenchol for (L. dentata). The two oils were effective as repellent substances when compared with commercial materials. Further studies are needed to isolate the most effective mosquito control agents from these oils.
Keywords
essential oils; Culex pipiens; adulticidal activity; Mentha longifolia; repllents; Lavandula dentata


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