Table 3.
Minimum inhibitory concentration of AgNPs synthesized by aqueous flower extract of Chrysanthemum indicum
| Indicator bacteria | Minimum inhibitory concentration (μg/mL)
|
|
|---|---|---|
| AgNPs | Streptomycin | |
| Gram-positive | ||
| Bacillus subtilis (MTCC 121) | >25 | 25 |
| Staphylococcus aureus (MTCC 96) | >25 | 12.5 |
| Staphylococcus epidermidis (MTCC 435) | 25 | >25 |
| Gram-negative | ||
| Escherichia coli (MTCC 433) | 12.5 | 12.5 |
| Klebsiella pneumoniae (MTCC 109) | 6.25 | 25 |
| Pseudomonas aeruginosa (MTCC 1934) | 37.5 | 25 |
Note: Streptomycin was the control antibiotic used for the bacteria.
Abbreviations: AgNPs, silver nanoparticles; MTCC, Microbial Type Culture Collection and Gene Bank.