Phytochemical Screening and Insecticidal Activity of Three Extracts of Tapinanthus bangwensis (Engl. Krause) on Sitophilus zeamais (Maize Weevil) - Open Access Library Journal

OALibJ > Vol.3 No.8, August 2016

Phytochemical Screening and Insecticidal Activity of Three Extracts of Tapinanthus bangwensis (Engl. Krause) on Sitophilus zeamais (Maize Weevil) ()

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DOI: 10.4236/oalib.1102962 1,248 Downloads 2,444 Views Citations

Author(s)

El Hadji Gorgui Diouf^1,2*, Moussoukhoye Diop¹, Aboubacary Sene¹, Abdoulaye Samb¹

Affiliation(s)

¹Laboratory of Natural Products, Department of Chemistry, Faculty of Sciences and Technology, University Cheikh Anta Diop, Dakar, Senegal.
²Regional Centre for Ecotoxicology Studies and Environment Security (CERES-Locustox), Dakar, Senegal.

ABSTRACT

In order to find alternative to synthetic pesticides, plants are increasingly used by farmers to protect stocks against crop pests. Thus, phytochemical and biological tests are performed on three organic extracts (cyclohexan, chloroform and methanol) of Tapinanthus bangwensis. The data were analyzed by the General Linear Model procedure using the software Minitab 16. These results showed that the methanol extract gives a better insecticidal activity on Sitophilus zeamais. RIZA software was used to calculate the LC50 of each extract. The cyclohexane extract gives an LC50 of 2.66 mg/ml after 18 days of treatment, while the chloroform extract and methanol respectively give LC50 of 4.49 mg/ml and 6.99 mg/ml after 19 and 20 days of treatment.

KEYWORDS

Extracts, Tapinanthus bangwensis, Sitophilus zeamais, Stored Food, Maize

Share and Cite:

Diouf, E. , Diop, M. , Sene, A. and Samb, A. (2016) Phytochemical Screening and Insecticidal Activity of Three Extracts of Tapinanthus bangwensis (Engl. Krause) on Sitophilus zeamais (Maize Weevil). Open Access Library Journal, 3, 1-10. doi: 10.4236/oalib.1102962.

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