Abstract
An antibacterial compound active against Streptococcus mutans was isolated from Kaempferia pandurata and identified as isopanduratin A using 1H NMR, 13C NMR and EI-MS. The minimum inhibitory concentration (MIC) of isopanduratin A was 4mg/l which was much lower than that of some other natural anticariogenic agents such as sanguinarine (12mg/l), green tea extract and carvacrol (125mg/l), thymol (250mg/l) and isoeugenol and eucalyptol (500mg/l). The bactericidal test showed that isopanduratin A completely inactivated S. mutans at 20mg/l in 1min. Significant inhibitory activity of isopanduratin A was also observed against S. sobrinus, S. sanguinis and S. salivarius with an MIC of 4mg/l. Damage to the cell membrane and cell wall of S. mutans by isopanduratin A was shown using transmission electron microscopy (TEM). These results suggest that isopanduratin A could be employed as a potential antibacterial agent for preventing dental caries.
Original language | English |
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Pages (from-to) | 377-381 |
Number of pages | 5 |
Journal | International Journal of Antimicrobial Agents |
Volume | 23 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2004 Apr |
Bibliographical note
Funding Information:This work was supported by the Korea Science and Engineering Foundation (KOSEF) through the Bioproducts Research Center at Yonsei University.
All Science Journal Classification (ASJC) codes
- Microbiology (medical)
- Infectious Diseases
- Pharmacology (medical)