Table 2: Antibacterial activity of the extracts of Buah Merah against pathogenic oral bacteria E. faecalis ATCC 29212, S. mutans ATCC 25175, and S. sanguinis ATCC 10556.

No. Extracts Inhibition Zones (mm) at concentration (%) MIC (ppm) MBC (ppm)
40 20 10
E. faecalis
1 MeOH 0 0 0 - -
2 n-Hexane 0 0 0 - -
3 EtOAc 9.3 8.6 7.5 1250 2500
4 H2O - - - - -
5 CHX 2% 16.6 15.7 15.7 0.003 0.006
S. mutans
1 MeOH 0 0 0 - -
2 n-Hexane 0 0 0 - -
3 EtOAc 12.3 1.2 10.4 0.312 0.625
4 H2O 0 0 0 - -
5 Chx 2% 21.0 21.0 20.5 < 0.001 < 0.001
S. sanguinis
1 MeOH 0 0 0 - -
2 n-Hexane 0 0 0 - -
3 EtOAc 17.9 16.1 14.5 0.312 0.625
4 H2O 6.9 0 0 - -
5 Chx 2% 19.3 19.6 19.6 < 0.001 < 0.001

Note: Chx: Chlorhexidine