Preparation of titanium dioxide nanoparticles from Solanum Tuberosum peel extract and its applications.

The present study describes a method for the preparation of green titanium dioxide (TiO 2 ) nanoparticles from the peel of Solanum tuberosum , commonly known as potato, and the potato peel being a kitchen waste. The green synthesized TiO 2 (G- TiO 2 ) nanoparticles were characterized using UV-visible spectroscopy, dynamic light scattering, scanning electron microscopy, TEM, XRD, and FTIR spectroscopy. The photocatalytic activity of the G- TiO 2 nanoparticles was also shown using the dye bromophenol blue. To explore the biocompatibility of the G- TiO 2 , the cell viability in normal as well as cancer cells was assessed. Further, the in vivo toxicity of the G- TiO 2 nanoparticles was assessed using zebrafish embryos. The novelty of the present invention is to utilize kitchen waste for a useful purpose for the synthesis of titanium dioxide nanoparticles which is known to have UV light scavenging properties. Moreover, the potato peel is a natural antioxidant and possesses a skin-lightening effect. A combination of the potato peel extract and titanium dioxide prepared using the extract will have a combinatorial effect for protecting UV light exposure to the skin and lightening the skin colour.