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Nāgercoil, India

Rajesh K.,Kerala University | Rathika Nath G.,Sree Ayyappa College for Women
Oriental Journal of Chemistry | Year: 2012

Transition metal complexes on polymers were found to be highly efficient in many catalysis reactions. The activity of Fe(III), Co(II), Ni(II) and Cu(II) complexes of polystyrene bound Isoxazole resin have been tested towards the epoxidation of alkenes by the decomposition of hydrogen peroxide. The reactions show a first order dependence on the concentration of both the substrates and the catalyst. The metal complexes having less cross linking at the backbone and ring-activating group near the active site showed high catalytic efficiency. Source


Hemarana K.,Tamil University | Jeyashree K.V.,Sree Ayyappa College for Women | Michael Babu M.,Tamil University | Kannan M.,VHNSN College
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2014

Various researches have been in progress to screen the bioactive potentials from floral source due to the negative impacts occurred during the intake of chemicals as a drug. So the present work aimed screen the bioactive potential of Hibiscus rosasinensis. The extracts prepared from the leaves of the Hibiscus were screened for antimicrobial activity against the pathogen isolated from skin. A portion of the extract was subjected to analyse various phytochemical present in the sample. Qualitative analysis was performed to find the presence of tannins, saponins, flavanoids, terpenoids, alkaloids and glycosides. In phytochemical studies the extracts of Hibiscus contains tannins, saponins, flavanoids, alkaloids and terpenoids. The Minimum Inhibitory Concentration (MIC) values showed the maximum of 13mm zone of inhibition at 80μl against Escherichia coli followed by 12mm against Enterobacter aerogenes and Staphylococcus aureus has been occurred. The present studies concluded the bioactive potential of methanolic extract of Hibiscus rosasinensis effective against various skin infecting pathogens. Source


Nath G.R.,Sree Ayyappa College for Women | Rajesh K.,University College
Asian Journal of Chemistry | Year: 2012

Functionalized polymers are found to be highly efficient in immobilizing transition metal ions. The activity of Fe(III), Co(II), Ni(II) and Cu(II) complexes of polystyrene bound pyrazole resin have been tested towards the epoxidation of alkenes by the decomposition of hydrogen peroxide. The reactions show a first order dependence on the concentration of both the substrates and the catalyst. The metal complexes having less cross linking at the backbone and ring-activating group near the active site show high catalytic efficiency. Source


Nath G.R.,Sree Ayyappa College for Women | Rajesh K.,Kerala University
Oriental Journal of Chemistry | Year: 2011

Functionalized polymers are found to be highly efficient in immobilizing transition metal ions. The activity of Fe(III), Co(II), Ni(II) and Cu(II) complexes of polystyrene bound pyrazole resin have been tested towards the decomposition of hydrogen peroxide. The reactions show a first order dependence on the concentration of both the substrates and the catalyst. The metal complexes having less cross linking at the backbone and ring-activating group near the active site show high catalytic efficiency. Source


Deepa S.,St Peters University | Valivittan K.,St Peters University | Vincent I.,Presidency College at Chennai | Tharadevi C.S.,Sree Ayyappa College for Women
Journal of Pure and Applied Microbiology | Year: 2013

Tannery effluents are of large-scale environmental concern because they colour and diminish the quality of water bodies and create adverse effects. The present study deals with isolation, identification and characterization of fungi isolated from tannery effluents collected from Ambur in Tamilnadu, India. Samples were studied from the period of April 2011 to March 2012 to know the occurrence and distribution of fungi. On serial dilution, it was found that a total of 21 fungal species belonging to 9 different genera were isolated. The collected data were subjected to statistical analysis like Standard error, ANOVA and species diversity index. Among the genera, Aspergillus was represented by 7 species followed by Penicillium with 6 species. The fungus, Penicillium purpurescens (644 CFU/ml), Aspergillus japonicas (461 CFU/ml), Gliocladium roseum (397 CFU/ml) and Aspergillus flavus (280 CFU/ml) showed their dominance. The average CFU/ml, percentage contribution and isolation frequency were calculated. Further, the fungal species like Aspergillus flavus, A. japonicus, A. niger, Paecilomyces variotii and Penicillium citrinum were selected based on their prevalent and dominant to study their Chromium adsorption ability. The order of adsorption showed, Penicillium citrinum > Paecilomyces variotii >A. japonicus > A. niger > A. flavus. Source

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