Table 3 Antibacterial activity of the YK extract in different Traditional Thai liquid vehicles and methanol by disk diffusion test
Bacteria strains | Inhibition zone (mm) of samples (mean ± SD) | ||||
|---|---|---|---|---|---|
MYK | LYK | RYK | WYK | Gentamycin 30 µg | |
Gram-positive bacteria | |||||
 S. aureus ATCC 25923 | 9.50 ± 0.00 | 16.73 ± 0.32 | - | - | 34.50 |
 S. aureus 6538 | 7.30 ± 0.00 | 11.67 ± 0.29 | - | - | 26.00 |
 MRSA DMST 20646 | 8.03 ± 0.12 | 21.83 ± 0.76 | - | - | - |
 B. subtilis ATCC 6633 | 8.03 ± 0.06 | 14.90 ± 0.00 | - | - | 28.90 |
 S. epidermidis ATCC 12228 | - | 14.83 ± 0.29 | - | - | 33.00 |
 S. pyogenes DMST 4369 | 7.93 ± 0.40 | 17.73 ± 0.21 | - | - | 25.00 |
 S. sobrinus | - | 22.67 ± 0.29 | - | - | 38.50 |
 K. rhizophila ATCC 9341 | 9.10 ± 0.36 | 24.00 ± 1.32 | - | - | 34.50 |
Gram-negative bacteria | |||||
 Shigella sp. | - | 9.43 ± 0.40 | - | - | 26.50 |
 E. coli ATCC 25922 | - | 10.00 ± 0.00 | - | - | 25.00 |
 K. pneumoniae ATCC 13883 | - | 17.67 ± 0.29 | - | - | 32.00 |
 P. aeruginosa ATCC 9027 | - | 11.77 ± 0.40 | - | - | 26.30 |
 E. aerogenes | - | 11.07 ± 0.06 | - | - | 25.70 |