Free Radical Scavenging and Antioxidant Activity of Silver Nanoparticles Synthesized from Flower Extract of Rhododendron dauricum

By Amit Mittal, Abhishek Kaler, Uttam Chand Banerjee. 2012

194 citations recorded by the source corpus.

A simple and efficient eco-friendly approach for the biosynthesis of stable, monodisperse silver nanoparticles (AgNPs) using Rhododendron dauricum flower extract is described. Different reaction parameters (concentration of plant extract, substrate concentration, pH, temperature and reaction time) were optimized to synthesize AgNPs with controlled properties{}. AgNPs were characterized in terms of synthesis, size distribution (PDI of 0.25), capping functionalities (phenolic compounds) and microscopic evaluation by UV–Visible spectroscopy, dynamic light scattering, Fourier Transform Infrared (FTIR) spectroscopy and Transmission Electron Microscope (TEM). The specific characteristics and loss of organic content (1.81 mg) of the synthesized nanoparticles was measured by Differential Scanning Calorimetry (DSC) and Thermo Gravimetric Analysis (TGA). The results showed the simplistic and feasible approach for obtaining stable aqueous monodispersive AgNPs. Further, the antioxidant activity of AgNPs imparted by plant phenolic components was evaluated using DPPH assay and found to be comparable to standard TROLOX.

Subfields: Materials Chemistry, Plant Science

View Paper: https://www.semanticscholar.org/paper/c26a90a7ed78e081eb0c2dd43e2a33f491fb61f6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Materials Chemistry

1. Uttam Chand Banerjee
2. Amit Mittal
3. Y. Chisti
4. M. S. Mehata
5. A. Verma

In Plant Science

1. Uttam Chand Banerjee
2. Amit Mittal
3. Y. Chisti
4. A. Verma
5. M. S. Mehata

Citations in the corpus

• Synthesis of metallic nanoparticles using plant extracts. (2013, background): “…Au 25–30 nm; spherical Raghunandan et al. (2009) Pyrus sp. (pear fruit extract) Au 200–500 nm; triangular, hexagonal Ghodake et al. (2010) Rhododedendron dauricam Ag 25–40 nm; spherical Mittal et al. (2012) Rosa rugosa Ag, Au 30–60 nm Ag; 50–250 nm Au Dubey et al. (2010a) Sesuvium…”
• Plant Extract as Reducing Agent in Synthesis of Metallic Nanoparticles: A Review (2013, background): “The plant parts can be naturally dried directly under sun [19] or under shade [20].”