Green Synthesis of Silver Nanoparticles (AgNPs) Using Talinum triangulare (Jacq.) Willd. Leaf extract and monitoring their antimicrobial activity

The field of nanotechnology is the most active area of research in modern materials science. Though there are many chemical as well as physical methods, green synthesis of nanomaterials is the most emerging method of synthesis. Conventionally, chemical reduction is the most frequently applied approach for preparation of metallic nanoparticles but in most of the synthesis protocols it cannot avoid the use of toxic chemicals. Hence, green approach for synthesis of 1 mM AgNO3 solution using the aqueous leaf extracts of Talinum triangulare (T. triangulare) (Jacq.) Willd as the reducing and stabilizing agents. Characterization of the synthesized AgNPs was carried out using UV-Vis spectroscopy and Fourier transform infrared (FTIR) spectroscopy. FTIR analysis revealed that the AgNPs were stabilized by eugenols, terpenes, and other aromatic compounds present in the extract. The green biosynthesized T. triangulare Ag NPs considerably inhibited the growth of human pathogenic both Gram-positive Staphylococcus aureus (2.35 mm) and Gram-negative bacteria Escherichia coli (2.55 mm) and Candida albicans (1.65 mm) showing promising antimicrobial activity. Thus, a simple efficient, an eco-friendly, cost effective and green approach of metal nanoparticles was established and it antimicrobial activity.