Table 3.
Scavenging effects on DPPH and inhibiting effects on pancreatic α-amylase activityof purification products from the ethyl acetate fraction
| Subfractions | Scavenging effect | Inhibiting effect | ||||
|---|---|---|---|---|---|---|
| EC50(μg/mL) | Regression equation | R2 | IC50(mg/mL) | Regression equation | R2 | |
| QEF1 | 360.3 ± 0.12 | y = 1.1760x + 7.3522 | 0.9956 | >16 | ||
| QEF2 | 270.1 ± 10.53 | y = 7.0445x–0.1542 | 0.9984 | 10.9 ± 0.40 | y = 5.1760x–6.3324 | 0.9974 |
| QEF3 | 235.2 ± 9.64 | y = 0.1610x + 12.1430 | 0.9587 | 9.4 ± 0.31 | y = 6.2048x–8.0609 | 0.9594 |
| QEF4 | 109.7 ±8.73 | y = 0.4350x + 6.6394 | 0.9762 | 8.2 ± 0.25 | y = 6.3727x–2.2339 | 0.9509 |
| QEF5 | 105.4 ± 0.97 | y = 0.4274x + 4.9564 | 0.9926 | 7.9 ± 0.23 | y = 4.9771x + 10.5100 | 0.9932 |
| QEF6 | 81.9 ± 1.75 | y = 0.5252x + 7.7326 | 0.9820 | 2.4 ± 0.10 | y = 14.2170x + 16.3680 | 0.9144 |
| QEF7 | 77.9 ± 1.32 | y = 0.5195x + 9.5402 | 0.9918 | 1.6 ± 0.04 | y = 16.6360x + 24.1290 | 0.9164 |
| QEF8 | 4.6 ± 0.43 | y = 10.1880x + 3.6992 | 0.9821 | 0.4 ± 0.01 | y = 163.6900x–10.1260 | 0.9717 |
n = 3, Mean ± SD
QEF1-QEF8, the first to eighth subfraction of the ethyl acetate fraction through Sephadex LH-20 column