期刊
JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
卷 21, 期 4, 页码 1466-1472出版社
KOREAN SOC APPLIED ENTOMOLOGY
DOI: 10.1016/j.aspen.2018.10.008
关键词
Essential oil; Eco-friendly; Formulation; Dengue; Herbal repellent; Adulticides
类别
资金
- Department of Biotechnology, New Delhi [BT/04/NE/2009]
Fresh leaves of Piper betle Linn. (Piperales: Piperaceae) and Sphaeranthus indicus Linn. (Asterales: Asteraceae), commonly known as betel leaves and East Indian globe thistle, respectively, were harvested and steam distilled for the extraction of P. betle and S. indicus crude volatile oils (Pb-CVO and Si-CVO, respectively). LC50 calculated on 3rd instar larvae of dengue mosquito Aedes aegypti Linn. (Diptera: Culicidae) was 42.17 ppm for PbSi-CVO (i.e., herbal formulation based on the EOs of P. betle and S. indicus). The larval and pupal duration were significantly longer post-treatment with 100 ppm of PbSi-CVO, if compared to control. We observed that PbSi-CVO significantly altered the detoxifying enzymes GST and CYP450 compared to the expression of control. Sub-lethal concentrations of PbSi-CVO showed strong repellent properties against dengue mosquitoes, without adverse reactions on the volunteers experiencing the repellent assays. Lastly, the adulticidal activity of PbSi-CVO was studied. Overall, our study outlined that this herbal product represents a promising candidate for the development of botanical based adulticidal agents.
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