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Larvicidal Activity of Chitosan Nanoparticles Synthesized from Crab and Squilla Species Against Aedes aegypti

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In the present study, chitosan nanoparticles are synthesized from the exoskeleton of marine crab and squilla species which are characterized through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and atomic force microscopy (AFM) techniques. The FTIR spectrum of the chitosan nanoparticles synthesized from crab shells has exhibited major absorption bands at 3446, 2922, 1645 and 1341 cm–1 whereas, the absorption bands are observed at 3454, 2928, 2368 and 1649 cm–1 for the chitosan nanoparticles produced from squilla shells. The XRD results have indicated the presence of characteristic diffraction peak of chitosan nanoparticles. The AFM analysis has revealed that the chitosan nanoparticles are spherical in shape with size range of 30–120 nm and 50–140 nm, respectively for the chitosan nanoparticles synthesized from crab and squilla shells. The chitosan nanoparticles have tested for larvicidal property against third larval instars of Aedes aegypti (A. aegypti) . The LC50 values observed for the crab and squilla chitosan nanoparticles are 30.30 and 26.13 mg l–1, respectively and their corresponding LC90 values are 96.37 and 79.58 mg l–1.
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Keywords: AEDES AEGYPTI; CHITOSAN NANOPARTICLES; LARVICIDAL ACTIVITY; SQUILLA AND CRAB SHELLS

Document Type: Research Article

Publication date: June 1, 2014

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  • Journal of Colloid Science and Biotechnology is an international multidisciplinary peer- reviewed journal covering all aspects of colloid science including colloids preparation, characterization, structure-property relationships, spectroscopy, chemical and physical properties and applications of colloids in biotechnology, medicine and pharmaceuticals. This journal deals with interdisciplinary research areas of chemistry, physics, biology, materials science, polymer science, nanotechnology covering all topics related to colloids such as latexes, emulsions, suspensions, micellar systems, gels, composites, hybrids, surfactants, aerosols, foams, minerals, soft matter, microfluidics, encapsulation processes of active molecules, biomolecules, surfacial and interfacial processes, catalysis, electrochemistry, theoretical aspects, computer simulations and colloids in biotechnology and medicine.
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