Biosynthesis of Copper Oxide Nanoparticles Using Streptomyces MHM38 and Its Biological Applications

Figure 7

Visible observation of optimized copper oxide nanoparticle biosynthesis by Streptomyces sp. (Left: 15 ml of supernatant was added to 15 ml of 5 mM CuSO₄ at pH 8. Right: 15 ml of media was added to 15 ml of 5 mM CuSO₄ at pH 8.)