Table 3. Antibacterial Activity of the Leaf Essential Oils from S. phalerataa.
| minimum inhibitory concentration – MIC (μg mL–1) | ||||
|---|---|---|---|---|
| bacteria | dry essential oil | rainy essential oil | CD | |
| aerobic | Streptococcus mutansb ATCC 25175 | 400 | >400 | 0.92 |
| Streptococcus mitisb ATCC 49456 | 400 | >400 | 3.68 | |
| Streptococcus sanguinisb ATCC 10556 | 200 | >400 | 1.84 | |
| Actinobacillus actinomycetemcomitansc ATCC 43717 | 400 | >400 | 7.84 | |
| anaerobic | Porphyromonas gingivalisc ATCC 33277 | 400 | >400 | 3.68 |
| Fusobacterium nucleatumc ATCC 25586 | 400 | >400 | 1.84 | |
| Actinomyces naeslundiic ATCC 19039 | 400 | >400 | 1.84 | |
a
CD, chlorhexidine dihydrochloride (positive control).
b
Gram-positive bacteria.
c
Gram-negative bacteria.