Fig. 10. Antimicrobial ability (IC₅₀) of AgNPs (synthetized using S. asoca leaf extract stored in dark at room temperature) monitored at regular time interval of every 30 days, data are presented as mean (n = 3) ± SEM, the comparison of the data between every 3 months is represented as *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001, and between every 6 months is represented as ^#p ≤ 0.05, ^##p ≤ 0.01, ^###p ≤ 0.001 significance level.