Table 6
Inhibitory effects of tea catechins on glucosylransferase activity
|
Enzyme sources Test compounds (b) Conc.,ug/ml |
6715DP |
MT8148 |
GTase-I(a) |
MT8148 |
Gtase-S(a) | |
|
250 |
500 |
250 |
500 |
250 |
500 | |
|
None |
100 |
100 |
100 |
100 |
100 |
100 |
|
C |
96.7 |
73.1 |
83.7 |
61.2 |
95.0 |
71.0 |
|
EC |
85.4 |
71.2 |
81.4 |
72.1 |
50.9 |
43.8 |
|
GC |
31.7 |
9.7 |
97.2 |
85.8 |
82.7 |
61.8 |
|
EGC |
84.7 |
61.0 |
94.0 |
82.0 |
90.4 |
58.7 |
|
Ecg |
0 |
0 |
0 |
0 |
0 |
0 |
|
GCg |
0 |
0 |
0 |
0 |
0 |
0 |
|
EGCg |
0 |
0 |
0 |
0 |
0 |
0 |
(a): Gtase-I and Gtase-S synthesized insoluble and soluble glucan, respccllvoly
(b): Test compounds : C,(+)-catechin ; EC,(-)-epicatechin;GC,(+)-gallocatechin;
EGC,(-)-epigallocatechin;Ecg,(-)-epicatechin gallate ; GCg,(-)-gallocatechin
Gallate ; EGCg,(-)-epigallocatechin gallate