Insecticidal fungal metabolites fabricated chitosan nanocomposite (IM-CNC) preparation for the enhanced larvicidal activity - An effective strategy for green pesticide against economic important insect pests

International Journal of Biological Macromolecules
S Karthick Raja NamasivayamKiruthiga Karunamoorthy

Abstract

In the present study, enhanced pesticidal activity and biocompatibility of chitosan nanocomposite prepared with biocompatible polymer chitosan - insecticidal metabolites derived from potential fungal biopesticidal agent Nomuraea rileyi were studied. Insecticidal metabolites were isolated from the culture filtrate of fungal strain grown in sabouraud maltose yeast extract broth (SMYB) and the collected filtrate was extracted with ethyl acetate followed by purification using G-60 silica gel column. Chitosan nanocomposite was prepared with metabolites thus acquired by ionic gelation method. Synthesized nanocomposite was found to have high stability, uniformly dispersed particles with high loading and entrapment efficiency. Insecticidal activity was studied by determination of cumulative mortality against larval instars of Spodoptera litura and changes in biochemical composition of midgut, hemolymph macromolecules which revealed that the nanocomposite was effective against all the larval stages in terms of high mortality, drastic reduction of midgut and hemolymph macromolecules biochemical composition. Biocompatibility of nanocomposite was carried out by evaluation of developmental toxicity against zebrafish and in vitro hemolysis w...Continue Reading

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Citations

Feb 27, 2021·International Journal of Biological Macromolecules· Um-E-AimanMunawar Iqbal
May 18, 2021·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Najwa BellemjidAbdelghani Iddar
Apr 15, 2020·International Journal of Biological Macromolecules·Priscilla Barbosa Sales AlbuquerqueLuana Cassandra Breitenbach Barroso Coelho
Aug 28, 2021·Pesticide Biochemistry and Physiology·Jayaraman KumaravelMuthugounder Subramanian Shivakumar

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