Table 1.
α-Glucosidase inhibitory activity of stem extract, fractions and compounds from Uncaria cordata var. ferruginea.
| Samples | α-Glucosidase Inhibitory * (%) | IC50 (μg/mL) | IC50 (mM) |
|---|---|---|---|
| Stems | 87.7 ± 2.3 | 102 | - |
| Fractions | |||
| DCM | 75.3 ± 2.4 | 360 | - |
| Acetone | 89.2 ± 3.8 | 200 | - |
| Acarbose | 90.9 ± 2.7 | 580 | 0.89 |
| Compounds | |||
| 2,4-DHBA | 78.8 ± 0.4 | 549 | 3.56 |
| Quercetin | 84.5 ± 0.6 | 556 | 1.84 |
| Scopoletin | 34.5 ± 0.4 | NA | - |
| Loganin | 44.9 ± 0.7 | NA | - |
* Concentration: 1 mg/mL; Values are Means ± SD, n = 3, NA = Not Applicable; Acarbose used as positive control.