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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996 EISSN: 1596-5996
Vol. 16, No. 4, 2017, pp. 905-910
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Bioline Code: pr17116
Full paper language: English
Document type: Research Article
Document available free of charge
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Tropical Journal of Pharmaceutical Research, Vol. 16, No. 4, 2017, pp. 905-910
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Chemical composition and insecticidal properties of essential oil from aerial parts of Mosla soochowensis against two grain storage insects
Chen, Xu-bo; Chen, Rui & Luo, Zheng-rong
Abstract
Purpose: To determine the insecticidal properties of essential oil from Mosla soochowensis aerial parts
against two insect pests, Sitophilus zeamais and Tribolium castaneum.
Methods: Hydro-distillation of M. soochowensis was used to extract the essential oil. Gas
chromatography/mass spectrometry (GC/MS) analysis was performed, and the contact (topical
application) and fumigant toxicity (sealed space) of the essential oil were evaluated.
Results: Thirty-nine chemical compounds were identified by GC-MS analysis of M. soochowensis
essential oil. The major components are β-caryophyllene (12.82 %), spatulenol (6.34 %), β-eudesmol
(6.26 %), carvone (6.12 %), α-thujone (5.12 %), γ-eudesmol (4.86 %), α-cedrol (4.23 %), and α-caryophyllene (4.04 %). The plant essential oil exerted contact toxicity against adults of S. zeamais and
T. castaneum (median lethal concentration LC50), 25.45 and 10.23 μg/adult, respectively). Moreover,
the essential oil exhibited pronounced fumigant toxicity towards adults of both species LC50 12.19 and
10.26 mg/L air, respectively).
Conclusion: These results show that M. soochowensis essential oil can be used in development of
safer and more natural and effective fumigants/insecticides for stored products.
Keywords
Mosla soochowensis, Contact toxicity, Sitophilus zeamais, Fumigant, Insecticide, Essential oil, Tribolium castaneum
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