Biosynthesis of Silver Nanoparticles from Bacillus licheniformis TT01 Isolated from Quail Manure Collected in Vietnam

Silver nanoparticles (AgNPs) find a wide range of use in many fields, and the biosynthesis AgNPs via biological routines has recently gained currency. In this study, Bacillus licheniformis TT01 strain was isolated from quail feces collected Vietnam evaluated for its ability to synthesize AgNPs. Through visual confirmation ultraviolet visible (UV–Vis) spectrum analysis, we found that realized process which biomass B. incubated with AgNO3 solution. Obtained were then assayed antibacterial activity against three species bacteria, namely Escherichia coli, cereus Ralstoniasolanacearum, showing better inhibitory action than solution bacterial extracellular fluid. The minimum concentration (MIC) AgNP 206 ppm E. coli R. solanacearum 343.3 cereus. X-ray diffraction (XRD) transmission electron microscopy (TEM) revealed obtained had spherical shape sizes ranging 2 22 nm, particles 10 nm appeared highest frequency.