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Objective:To identify the larvicidal activities of silver nano particles synthesised with Rhizophora mucronata(R.mucronata) leaf extract against the larvae of Aedes aegypti(Ae.aegypti) and Culex quinquefasciatus(Cx.quinquefasciatus).Methods:In vitro larvicidal activities such as LC_(50) and LC_(90) were assessed for the Ae.aegypti and Cx.quinquefasciatus larval species.Further, characterisation such as UV,XRD,FTIR and AFM analysis were carried out for the synthesised silver nano particles.Results:The LC_(50) value of the synthesised silver nano particle was identified as 0.585 and 0.891 mgg/L for Ae.aegypti and Cx.quinquefasciatus larvae respectively. Further,the LG_(90) values are also identified as 2.615 and 6.291 mg/L for Ae.aegypti and Cx. quinquefasciatus species respectively.The synthesised silver nanoparticles have maximum absorption at 420 nm with the average size of 60-95 nm.The XRD data showed 20 intense values with various degrees such as 37.10°,47.66°,63.97°and 70.01°.The FTIR data showed prominent peaks in(3 426.89,2 925.49,2 869.56,2 346.95,1 631.49,1 031.73,669.18 and 455.12) different ranges.Conclusions:The biosynthesis of silver nanoparticles with leaf aqueous extract of R. mucronata provides potential source for the larvicidal activity against mosquito borne diseases.
Objective: To identify the larvicidal activities of silver nano particles synthesised with Rhizophora mucronata (R. mucronata) leaf extract against the larvae of Aedes aegypti (Ae. Aegypti) and Culex quinquefasciatus (Cx. Quinquefasciatus. Methods: In vitro larvicidal activities such as LC_ (50) and LC_ (90) were assessed for the Ae. Aegypti and Cx.quinquefasciatus larval species. Further, characterization of such UV, XRD, FTIR and AFM analysis were carried out for the synthesis of silver nano particles. Results: The LC_ (50) value of the synthesized silver nano-particles was identified as 0.585 and 0.891 mgg / L for Ae. Aegypti and Cx.quinquefasciatus larvae respectively. Further, the values of LG_ (90) are also identified as 2.615 and 6.291 mg / L for Ae .aegypti and Cx. quinquefasciatus species respectively. The synthesised silver nanoparticles have maximum absorption at 420 nm with the average size of 60-95 nm. XRD data showed 20 intense values with various degrees such as 37.10 °, 47.66 °, 63.97 ° and 70.01 ° .T he FTIR data showed prominent peaks in (3 426.89,2 925.49,2 869.56,2 346.95,1 631.49,1 031.73,669.18 and 455.12) different ranges.Conclusions: The biosynthesis of silver nanoparticles with leaf aqueous extract of R. mucronata provide potential source for the larvicidal activity against mosquito borne diseases.