Gas chromatography mass spectrophotometry analysis and insecticidal activities of essential oils of Azadirachta indica, Citrus sinensis and Anarcadium occidentale on Blattella germanica’
1 Department of Botany, Lagos State University, Lagos, Nigeria.
2 Department of Zoology and Environmental Biology, Lagos State University, Lagos, Nigeria.
Research Article
World Journal of Advanced Pharmaceutical and Life Sciences, 2022, 03(02), 001–010.
Article DOI: 10.53346/wjapls.2022.3.2.0038
Publication history:
Received on 04 September 2022; revised on 09 November 2022; accepted on 12 November 2022
Abstract:
Essential oils are a viable alternative to conventional pesticides because of their natural insect resistance, as well as their environmental and human health implications. In this study, the chemical compositions of essential oils extracted from Citrus sinensis (peel), Anacardium occidentale (nuts) and Azadiractha indica (leaves) were characterized. The insecticidal activities of the oils and its constituents against Blattella germanica (German cockroach) were investigated. The essential oils of A. occidentale, A. indica, and C. sinensis were gotten from the respective plants using hydro distillation methods and were screened for phytochemical components using Gas chromatography and mass spectrometer (GC-MS) Thirty-six (36) compounds were detected with the percentage composition of over 100% from A. occidentale, D-Limonene had the highest composition of about 34.68%. C. sinensis contained 11 compounds with D-Limonene having the highest value of 93.98 % higher than that of A. occidentale and the total percentage composition is lesser than 100%. A. indica essential oil contained 8 compounds in which cyclotrisiloxane had the highest percentage composition of 58.52%. Concentrations of 0.1ml and 0.2ml of the essential oils of A. occidentale, C. sinensis and A. indica were tested on Blattella germanica. The essential oils of C. sinensis and A. indica caused 100% mortality of the cockroach nymphs using continuous exposure method while the essential oil of A. occidentale was repelled by the cockroaches. At the concentrations of 0.1 ml and 0.2 ml of C. sinensis oil, all the cockroaches died within 24 hours, whereas the essential oil of A. indica at the same concentrations mortalized all the cockroaches after 24 hours.
Keywords:
Mortality; Repelled; Phytochemicals; Essential oils; Insecticidal plants
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