Green and black tea infusion-mediated synthesis of silver nanoparticles and their antibacterial and antifungal activities

Silver nanoparticles (AgNPs) using plant extract have drawn the attention of researchers due to their eco-friendly nature. In this study, AgNPs were prepared using a 0.1 mM silver nitrate solution and confirmed by monitoring the color changes from yellow to brown using a UV-visible spectrophotometer. The average crystallite sizes of AgNPs, which have been stabilized by green and black tea extract, were were~53.58 and 43.43 nm. However, both extracts showed predominantly spherical morphology according to TEM analysis. The bacterial and fungal study showed that synthesized AgNPs exhibited a considerable zone of inhibition against pathogenic microbes. Therefore, the synthesized AgNPs using green and black tea extracts can be used for the development of antimicrobial agents.