Table 2.
Extraction yield of sample and in vitro antioxidant activities of the extract.
| Plant name | Local name | Sample | Extraction yield1) (%) | DPPH2) radical scavenging activity | FRAP3) | |
|---|---|---|---|---|---|---|
| IC504) (µg/mL) | ECAA105) (µg/mL) | |||||
| Ascorbic acid (AA) | — | 2.35 ± 0.726) | — | |||
| 1 | Ipomoea batatas (IB) | Goguma | Leaves | 18.8 | 392.4 ± 53.7 | 165.5 ± 46.3 |
| 2 | Boehmeria nivea (L.) Gaudich (BN) | Mosi | Leaves | 31.8 | 375.9 ± 61.5 | 67.8 ± 6.3 |
| 3 | Morus alba L. (MA) | Pong | Leaves | 24.4 | 826.0 ± 26.2 | 195.3 ± 4.8 |
| 4 | Acanthopanax koreanum (AK) | Sum-ogalpi | Leaves | 29.4 | 61.1 ± 1.1 | 39.1 ± 1.3 |
| 5 | Cedrela sinensis (CS) | Gazuk | Sprouts | 20.1 | 35.9 ± 7.1 | 39.5 ± 2.5 |
| 6 | Oenothera biennis L. (OB) | Dalmazi | Sprouts | 25.4 | 26.2 ± 4.2 | 15.8 ± 1.1 |
| 7 | Equisetum arvense L. (EA) | Shettgi | Aerial parts | 20.4 | 306.7 ± 42.4 | 115.8 ± 13.6 |
| 8 | Artemisia princeps Pamp. Hara (AP) | Sook | Aerial parts | 16.6 | 915.2 ± 25.5 | 188.0 ± 3.9 |
| 9 | Oenanthe javanica (blume) DC. (OJ) | Dolminari | Aerial parts | 13.8 | 2292.6 ± 32.3 | 230.6 ± 5.0 |
| 10 | Glebionis coronaria (GC) | Sookgod | Aerial parts | 31.0 | 2549.3 ± 140.4 | 263.6 ± 11.8 |
(1) The yield of 50% ethanol extract from dried sample, (2) 2,2-diphenyl-1 picrylhydrazyl, (3) ferric reducing antioxidant power, (4) concentration of each extract to reduce the oxidant levels by 50%, (5) concentration of each extract to exhibit the equal effect to 10 µg/mL of ascorbic acid, (6) mean ± SD.