Plant-mediated green synthesis, characterization and antibacterial efficacy of Ag-NPS using extracts of Wrightia tinctoria leaves for biological application

Abstract

Wrightia tinctoria was one of the medicinal plants that contains enormous amount of phytoconstituents with diverse functions and the plant was said to be the safer drug widely used in treating various ailments. In this present work, silver nanoparticles were synthesized using different solvents (benzene, ethanol and aqueous) of Wrightia tinctoria leaves. The prepared nanoparticles are characterized by UV- Vis spectroscopy, FTIR, XRD, FESEM and HRTEM analysis. Biosynthesized silver nanoparticles of ethanol extract showed strong antibacterial activity compared to the nanoparticles synthesized from other extracts against Staphylococcus aureus and Enterococcus faecalis (gram-positive) and Escherichia coli and Klebsiella pneumoniae(gram-negative) bacterial strains by well diffusion method. In this investigation, the selected plant extract and silver nanoparticle were coated on viscose spunlacednonwoven fabrics and subjected to qualitative and quantitative antibacterial studies.