Table 1: Antimicrobial activity of the AgNPs against various pathogenic micro-organisms. The data is presented as the mean ± value standard deviation of three replicates.

Micro-organismsZone of inhibition (mm in diameter)
10 µg/mL20 µg/mL 30 µg/mL40 µg/mL50 µg/mLAntibiotics 30 µg/mL

BacteriaAmoxicillin
Escherichia coli ATCC 105367.5 ± 0.3515.2 ± 0.3118.8 ± 0.3023.3 ± 0.2027.3 ± 0.1519.3 ± 0.10
Bacillus subtilis ATCC 663311.2 ± 0.3519.4 ± 0.2522.5 ± 0.1028.1 ± 0.2033.2 ± 0.2023.8 ± 0.25
Enterococcus hirae ATCC 105416.3 ± 0.2013.3 ± 0.1417.2 ± 0.1521.8 ± 0.3025.4 ± 0.2519.5 ± 0.10
Pseudomonas aeruginosa ATCC 278539.1 ± 0.1517.7 ± 0.3019.4 ± 0.2023.6 ± 0.3528.3 ± 0.2021.3 ± 0.30
Shigella flexneri ATCC 120225.2 ± 0.2011.2 ± 0.2115.4 ± 0.1519.3 ± 0.2522.5 ± 0.1017.5 ± 0.30
Staphylococcus aureus ATCC 65387.8 ± 0.2515.1 ± 0.3219.1 ± 0.2024.2 ± 0.2027.1 ± 0.1521.3 ± 0.10

FungiNystatin
Aspergillus niger ATCC 10156.7 ± 0.3213.6 ± 0.2217.3 ± 0.2521.4 ± 0.2025.3 ± 0.1518.1 ± 0.10
A. brasiliensis ATCC 164044.8 ± 0.2510.2 ± 0.1514.6 ± 0.2019.4 ± 0.1023.4 ± 0.1515.8 ± 0.30
A. fumigates ATCC 10227.2 ± 0.3515.4 ± 0.2219.3 ± 0.2024.3 ± 0.1026.3 ± 0.3021.4 ± 0.15
Candida albicans ATCC 102319.5 ± 0.2018.1 ± 0.2122.4 ± 0.2525.2 ± 0.2528.4 ± 0.2524.5 ± 0.20