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    • Keywords


      Silver nanoparticle; radical scavenging efficacy; Thiol; DPPH.

    • Abstract


      Radical scavenging efficacy of L-cysteine (L-Cys), glutathione (GSH) and thioctic acid (TA) in the presence of silver nanoparticles (AgNPs) were determined by 1,1-diphenyl 2-picryl hydrazil (DPPH), nitric oxide (NO) and hydroxyl (OH) radicals as spectrophotometric assay. The hydrogen peroxide (H2O2) scavenging efficacy has been determined by titration method. Ascorbic acid has been used as standard for all radical scavenging efficacies. In general, antioxidant activity decreases in the presence of AgNPs. The covalent interactions of thiols (-SH) were found to be a key factor for the decreases in scavenging activity. The effect of thiol concentrations has been discussed. The size and shape of the nanoparticles and AgNP-SR interactions have been characterized through Transmission Electron Microscopy (TEM) and Fourier Transform Infrared (FTIR) spectroscopy, respectively.

    • Author Affiliations


      Kumudini Chandraker1 Sandeep Kumar Vaishanav1 Rekha Nagwanshi2 Manmohan L Satnami1

      1. School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492 010, India
      2. Department of Chemistry, Govt. Madhav Science P. G. College, Ujjain (M.P.), 456 010 India
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    • Supplementary Material

  • Journal of Chemical Sciences | News

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