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    GREEN SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM NYMPHAEA ODORATAROOT EXTRACT AND ITS ANTIBACTERIAL ACTIVITY
    (K.S.G. College of Arts and Science, 2018-08-11) Sujithra V; Geetha M; Jeevadharshni S; Kanchana M
    The biosynthesis of nanoparticles has been proposed as a cost-effective and environmentally friendly alternative to chemical and physical methods. Plant-mediated synthesis of nanoparticles is a green chemistry approach that connects nanotechnology with plants. Various techniques used to characterize synthesized nanoparticles are SEM and UV–Visible spectrophotometer. UV–Visible spectrophotometer showed absorbance peak in range of 450–550nm. The silver nanoparticles showed antibacterial activities of Nymphaea odorataroot extract against both gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) microorganisms. The synthesized (silverNps) were found to be effective as antimicrobial agents against some important human pathogens
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    GREEN SYNTHESIS AND PHYTOCHEMICAL ANALYSIS OF SILVER NANO PARTICLES USING ROOT OF NELUMBO NUCIFERA AND THEIR ANTIBACTERIAL ACTIVITY
    (KSG College of Arts and Science, CBE., 2018-08-11) Geetha M; Muthumeenachi; Jeevadharshni S; Sujithra V; Kanchana M
    In the present study, biochemical analysis of Acalyphaindica,biosynthesis of silver nanoparticles and its antimicrobial activity on clinical laboratory bacterial pathogens were investigated. Silver nanoparticles were rapidly synthesized using root extract of Acalyphaindica and the formation of nanoparticles was observed. The results recorded from UV-vis spectrum, and scanning electron microscopy (SEM) support the biosynthesis and characterization of silver nanoparticles. Further, the antibacterial activity of synthesized silver nanoparticles showed effective inhibitory activity against clinical laboratory pathogens Viz., Escherichia coli (gram negative) and Staphylococcus aureus (gram positive).