| RME | rhizome methanolic extract |
| HXF | hexane fraction |
| EAF | ethyl acetate fraction |
| BUF | n-butanol fraction |
| AQF | aqueous fraction |
| GAE | gallic acid equivalent |
| RE | rutin equivalent |
| CE | catechin equivalent |
| TRE | trolox equivalent |
| NRU | neutral red uptake |
| CAA | cellular antioxidant activity |
| AUC | area under the curve |