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Toxic effects of neem cake extracts on Aedes albopictus (Skuse) larvae

TitleToxic effects of neem cake extracts on Aedes albopictus (Skuse) larvae
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2010
AuthorsNicoletti, M., Serafini M., Aliboni A., D’Andrea Armando, and Mariani Susanna
JournalParasitology Research
Volume107
Pagination89 - 94
Date Published2010///
Abstract

In order to investigate its insecticide potential, the neem cake methanol extract was first analyzed and then separated by different solvents. The high-performance liquid chromatography analysis showed that the neem cake methanol extract still contained relevant quantities of nortriterpenes. Fractions of increasing polarity were obtained from the separation process: hexane fraction (Hp), EtOAc fraction (Ep), n-BuOH fraction (Bp), and aqueous fraction (Wp). The activity of the fractions on Aedes albopictus (Skuse) eggs and larvae was tested, and the Ep fraction exhibits the most relevant larvicide effect. The nuclear magnetic resonance fingerprint analysis of this phytocomplex isolated on EtOAc fraction was performed. The larvicidal effectiveness of the phytocomplex isolated on EtOAc, compared to that of pure and commercial azadirachtin solutions of different concentrations, was checked. The results showed that the activity of the phytocomplex, as a whole, was significantly higher than those of isolated compound solutions. As a consequence, the neem cake is a promising low-cost, easily available on the market, and natural resource to develop a new bioinsecticide, mainly in developing countries. © 2010 Springer-Verlag.

Notes

Export Date: 26 August 2010Source: Scopus

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-77953652055&partnerID=40&md5=dc06d6328aa6342eb2543d8c3c5a8c74
Citation Key303