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    • DNA-assisted synthesis of chitosan/$\alpha$-Fe$_2$O$_3$ nanocomposites for antioxidant and antimicrobial activities

      MALU SOMARAJ NANCY JOHN NISHA J THARAYIL

      Volume 40 Issue 7 December 2017 pp 1463-1469

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/040/07/1463-1469

    • Keywords

       

      Metal oxide nanoparticles; nanocomposites; antioxidant; antibacterial activity.

    • Abstract

       

      Novel nanocomposites, based on chitosan/α-Fe$_2$O$_3$ (C/FD), have been successfully synthesized. The FDnanoparticles were prepared by co-precipitation method using DNA as the capping agent. The samples were characterizedby XRD, EDAX, SEM and TEM. The hematite nanoparticles that were prepared using DNA were compared withthe samples prepared using EDTA and CTAB as capping agents. The effect of C/FD nanocomposites on the growth offew common water pathogens were studied to explore its use as an antibacterial agent to be used in water purification.The antioxidant activity of samples was tested using a DPPH assay at two different concentrations of FD. It provides thepossibility of improving radical scavenging activity by varying the preparation conditions. The results also showed that theC/FD being a bio-compatible, eco-friendly and low cost material is used to inhibit the growth of several fungi and bacteriathat can be useful for a number of applications in the food and pharmaceutical industry.

    • Author Affiliations

       

      MALU SOMARAJ1 NANCY JOHN1 NISHA J THARAYIL1

      1. Department of Physics, SN College for Women, Kollam 691001, India

    • Dates

       
      Published
      15 December 2017
      Manuscript received
      11 August 2016
      Accepted
      7 April 2017

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      Click here for Editorial Note on CAP Mode

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