Table 1 Antibacterial activity of Nymphaea nouchali seed extract in different concentrations
Microorganisms | Zone of inhibition (mm) | ||||||
|---|---|---|---|---|---|---|---|
1000 μg/ml | 500 μg/ml | 250 μg/ml | 125 μg/ml | 62.5 μg/ml | DMSO 1% v/v | Streptomycin 10 μg/ml | |
Gram negative bacteria | |||||||
S. typhi | 12 | 9 | - | - | - | - | 19 |
P. aeruginosa | 25 | 20 | 17 | 15 | 11 | - | 17 |
E. coli | 15 | 14 | 11 | - | - | - | 16 |
V. cholerae | 13 | 10 | 9 | 9 | 8 | - | 20 |
Brucella | 13 | 8 | - | - | - | - | 20 |
K. pneumoniae | 13 | 11 | - | - | - | - | 19 |
S. dysenteriae | 14 | 9 | 8 | - | - | - | 20 |
Gram positive bacteria | |||||||
S. aureus | 20 | 18 | 15 | 12 | 11 | - | 23 |
B. cereus | 14 | 9 | - | - | - | - | 23 |
E. faecalis | 11 | 9 | 8 | 8 | - | - | 19 |