Photoassisted Synthesis of Silver Nanoparticles Using Riceberry Rice Extract and Their Antibacterial Application

Figure 10

Inhibition zones of AgNPs obtained from various conditions of (a) volume ratios of AgNO₃ to RB extract (pH 2.5, 30 min irradiation), (b) pH (AgNO₃ : RB; 1 : 12.5, 30 min irradiation), and (c) irradiation times (AgNO₃ : RB; 1 : 12.5, pH 2.5) against S. aureus and E. coli compared with the mean of particle size. Each symbol indicates the (). Significant difference between Gram-positive and Gram-negative bacteria ().

(a)

(b)

(c)