Articles written in Bulletin of Materials Science

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


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      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.

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