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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 16, No. 2, 2012, pp. 213-216
Bioline Code: ja12036
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 16, No. 2, 2012, pp. 213-216

 en A Molluscicidal Triterpenoid Saponin from the Fruits of Napoleonaea P. Beauv (Lecythidaceae)
Ojinnaka, Chukwunonye M. & Okpala, Dorothy C.

Abstract

A new molluscicidal triterpenoid saponin, napoleonaside [1] has been isolated from the methanolic extract of the fruit of Napoleonaea imperialis check for this species in other resources . The structure of napoleonaside was established as 3β- O-[{β-D-glucopyranosyl(1→4)}{α-L-arabinopyranosyl(1→2)- β-D-glucopyranosyl(1→2)}- β-Dglucuronopyranosyl]- 16α,22α,24,28-tetrahydroxyl-21- β-O-angeloxyolean-12-ene, by spectroscopic (IR, FABMS, 1H and 13C-NMR) methods. Napoleonaside was tested for its molluscicidal properties against Biomphalaria glabrata check for this species in other resources and was found to be one of the most potent naturally occurring plant molluscicides with activity of 0.4ppm (observed after 24hrs).

Keywords
Napoleonaea imperialis, Lecythidaceae, triterpenoid saponin, napoleonaside, molluscicide.

 
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