Table 4.
Antibacterial activity of hydrosol and rose dreg fractions.
| Tests | S. aureus | C. acnes | S. epidermidis | C. albicans | P. aeruginosa | E. coli |
|---|---|---|---|---|---|---|
| HMD | n/a * | n/a | n/a | n/a | n/a | n/a |
| HMK | n/a | n/a | n/a | n/a | n/a | n/a |
| HMB | n/a | n/a | n/a | n/a | n/a | n/a |
| RMD | n/a | n/a | n/a | n/a | n/a | n/a |
| RMK | n/a | n/a | n/a | n/a | n/a | n/a |
| RMB | n/a | n/a | n/a | n/a | n/a | n/a |
| Clinda M | ≥1:2 ** | ≥1:512 | ≥1:2 | n/a | n/a | n/a |
| Penicillin G (µg/mL) | 0. 625 | 0.078 | 0.156 | n/a | n/a | n/a |
* n/a = no activity. ** Titer 2 means that the test has a concentration of antibiotic agent that can act against the microbial strains at a dilution of 1:2. The higher the titer, the greater the concentration of antimicrobial activity. HMD, hydrosol fractions of Mon Dang Prasert; HMK, hydrosol fractions of Mon Klai Kangwon; HBC, hydrosol fractions of Bishop’s Castle; RMD, rose dreg fractions of Mon Dang Prasert; RMK, rose dreg fractions of Mon Klai Kangwon; RBC, rose dreg fractions of Bishop’s Castle.