Table 4.
The NA inhibition activities of non-decaf and decaf coffee from different regions in West Java.
| Treatments | % Enzyme Inhibition | IC50 (μg/mL) | Level of Caffeine (%) | Level of Chlorogenic Acid |
|---|---|---|---|---|
| Blank | 0 | 0 | - | |
| DANA a | 90.01 ± 24.55 | 5.93 ± 0.54 | - | |
| Garut extract | 72.26 ± 22.02 | 83.80 ± 12.38 | 1.45 ± 0.05 | 0.81 ± 0.035 |
| Tasikmalaya extract | 83.28 ± 18.90 | 71.70 ± 16.03 | 2.28 ± 0.05 | 0.54 ± 0.021 |
| Pangalengan extract | 79.90 ± 18.43 | 88.79 ± 22.11 | 1.57 ± 0.88 | 0.97 ± 0.06 |
| Garut decaf | 80.84 ± 25.01 | 55.74 ± 08.89 b | 0.00002 ± 0.00 | 0.029 ± 0.01 |
| Tasikmalaya decaf | 88.89 ± 17.34 | 69.70 ± 18.23 | 0.097 ± 0.00 | 0.001 ± 0.00 |
| Pangalengan decaf | 80.00 ± 18.23 | 75.23 ± 19.02 | 0.049 ± 0.01 | 0.005 ± 0.00 |
| CGA c | 98.51 ± 15.34 | ± 10.55 | - |
a DANA: (2-deoxy, 2,3-dehydro N-acetyl neuraminic acid). b p values < 0.05 were considered significant. c CGA: chlorogenic acid.