Table 2.
The IC50 values of GTE, GTP, EGCG alone and their combination with acarbose on inhibiting α-amylase activity.
| Components | IC50 (μg/mL) | |
|---|---|---|
| Single | Combined | |
| GTE | 4,020.157 ± 172.363 | 2,845.987 ± 154.07 |
| GTP | 1,370.812 ± 59.081 * | 609.463 ± 20.351 * |
| EGCG | 1,849.612 ± 73.475 * | 1,094.802 ± 55.992 * |
| 1,974.612 ± 18.653 *† (GTE) | ||
| Acarbose | 2,715.654 ± 24.709 | 1,206.974 ± 11.395 *† (GTP) |
| 1,614.753 ± 14.691 *† (EGCG) | ||
* Indicates significant difference (p < 0.05) from the positive control of acarbose alone. † indicates IC50 of acarbose independent of other components (GTE, GTP, and EGCG respectively) in combined study.