Table 7
Minimum inhibitory concentrations (MIC) of tea catechins against
cariogenic bacteria
|
Tea compounds(c) |
MIC(ug/ml) | |||||
|
S.mutans MT8148 |
S.mutans IFO13955 |
S.mutans 0715DP | ||||
|
a(a) |
b(b) |
A |
b |
a |
B | |
|
C |
>1000 |
>1000 |
>1000 |
>1000 |
>1000 |
>1000 |
|
EC |
>1000 |
>1000 |
>1000 |
>1000 |
>1000 |
>1000 |
|
GC |
250 |
250 |
250 |
250 |
250 |
250 |
|
EGC |
500 |
250 |
500 |
250 |
500 |
250 |
|
Ecg |
>1000 |
1000 |
>1000 |
>1000 |
>1000 |
<1000 |
|
EGCg |
1000 |
500 |
1000 |
500 |
1000 |
500 |
(a): BHI agar medium
(b); Sensitive mest extract agar mediun
(c): Test compounda : C,(+)-catechin; EC,(-)-epicatechin ; GC, (+)-gallocatechin; EGC,
(-)-epigallocatechi; Ecg,(-)-epicatechin gallate;EGC,(-)-epigallocatechin gallate