Table 2. SOD-like activity of Hemerocallis fulva extracts

Sample¹⁾	Concentration (μg/mL)
Sample¹⁾	5	20	50	100	200	500
HF-WE	1.01±0.05^bF	3.32±0.15^cE	5.46±0.20^bD	6.95±0.18^cC	8.39±0.43^bB	10.61±0.58^bA
HF-EE	1.23±0.02^aF	3.57±0.03^bE	5.75±0.04^bD	7.14±0.05^bC	9.45±0.05^aB	12.32±0.03^aA
Trolox	1.29±0.05^aF	3.98±0.09^aE	6.04±0.06^aD	7.73±0.16^aC	9.75±0.24^aB	12.55±0.53^aA

HF-WE, water extract of H. fulva; HF-EE, ethanol extract of H. fulva; Trolox, 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid, positive control.
All values are mean±SD (n=3).
Different lowercase letters (^a-c) within the same column indicate significant differences among samples at the same concentration (p<0.05). Different uppercase letters (^A-F) within the same row indicate significant differences among concentrations within the same sample (p<0.05), based on Duncan’s multiple range test.