Abstract
The present work is a modification for Serpen et al.’s method for antioxidant activity determination for insoluble materials with special reference to metal oxide nanoparticles. As reported in our former publications the mixing procedures were followed as mentioned by Serpen et al. A new mixing procedure was followed for enhancing the reaction between metal oxide nanoparticles and DPPH in the solution. The sonication inside a water bath enhances the DPPH scavenging capacity of metal oxide nanoparticles up to 13.94% and 18.96% in case of ferric oxide and nickel oxide nanoparticles respectively. The control DPPH solution without any nanoparticles does not show any degradation due to sonication.
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