Figure 1: Synthesis of AgNPs by culture supernatant of B. funiculus. The figure shows flask containing samples of AgNO3 after exposure to 60 min (a), AgNO3 with the extracellular culture supernatant of B. funiculus (b), and AgNO3 plus supernatant of B. funiculus (c). It is observed that the color of the solution turned from colorless to brown after 1 h of the reaction, indicating the formation of AgNPs.