Synthesis of white pepper oleoresin mediated silver nanoparticles and its antioxidant effect

Introduction and Aim: Nanotechnology deals with the synthesis of different types of nanoparticles that can be used in various fields including medicine as they have completely new or enhanced properties based on size, shape, dispersity, and morphology. White pepper (Piper nigrum L.), known as “the king of spices,” has several properties and can be used as herbal medicines, preservatives, dietary supplements, and fragrances. The present study aimed to synthesize white pepper oleoresin mediated silver nanoparticles and to evaluate its antioxidant activity. Materials and Methods: White pepper oleoresin mediated silver nanoparticles were synthesized and were characterized by UV-Vis spectroscopy. The antioxidant activity was evaluated by DPPH assay using ascorbic acid as standard. Results: UV Vis spectroscopy showed a peak at the wavelength of 410 nm, indicating the presence of silver nanoparticles. It was found that at 100µL, the white pepper oleoresin mediated silver nanoparticles showed greater antioxidant activity compared to ascorbic acid. Conclusion: White pepper oleoresin can be effciently used in the synthesis of silver nanoparticles as a green route, and since the biosynthesized silver nanoparticles showed good antioxidant properties, it may be used for various conditions with oxidative stress.