Line Bisection Judgments in Untreated and Undertreatment ADHD Children; Prevalence of human Myiasis infestation among primary school pupils in Ayamelum Local Government Area, Anambra State South- Eastern Nigeria.

E3 Journal of Medical Research

E3 Journal of Medical Research Vol. 1 (1) pp. 014-016, February 2012; © E3 Journals; ISSN 2276-9900

Larvicidal activity of some essential oil hydrolates against dengue and filariasis vectors

Bipul Rabha * , Reji Gopalakrishnan , Indra Baruah , Lokendra Singh
Defence Research Laboratory, Tezpur 784 001, Assam, India
*Corresponding Author E-mail:
Accepted 3 January 2012


Essential oil hydrolates are aqueous solutions obtained during the steam distillation of medicinal and aromatic plants. The hydrolates of four plants - Zanthoxylum limonella, Zingiber officinale, Curcuma longa and Cymbopogon citratus were evaluated for their larvicidal activity against two laboratory reared mosquito species - Aedes albopictus and Culex quinquefasciatus. The hydrolate of Z. limonella was most effective against both Ae. albopictus and Cx. quinquefasciatus with LC50 11 and 15.5 (%v/v) respectively. The larvicidal activity of hydrolates of Z. officinale, C. longa and C. citratus were also found promising with LC50 of at 15.8, 24.7 and 33.7 (%v/v) respectively against Ae. albopictus and 21.8, 35.5 and 38.8 (%v/v) against Cx. quinquefasciatus. The results suggest the potential utilisation of hydrolates of essential oils for the control of mosquito populations.

Keywords: Essential oil ;Hydrolates ;Larvicidal activity ; Aedes albopictus ;Culex quinquefasciatus.

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