Table 3. Antioxidant activity of water extract and intra dialyzer membrane substance

Radicals	Sample code	Sample concentration (μg/mL)			IC50 1) (μg/mL)
		500	1,000	2,000
ABTS	HWE2)	21.56±0.33A3)***4)	39.39±0.33B***	71.11±0.38C***	1,350.75
	IDS	16.74±0.65AA	32.84±0.11B	95.92±0.37C	792.76
DPPH	HWE	13.48±0.90A***	25.16±1.11B***	43.41±1.07C***	2,612.97
	IDS	23.34±1.17A	40.79±2.14B	66.21±0.71C	1,401.00

IC50 values are half-maximal inhibition concentration.
HWE, hot water extract from hot-air dried saponaria aloe; IDS, intra-dialysis membrane substance from HWE.
Values are mean±SD (n=4). ^A-CMeans are significantly different with the same sample by Duncan’s multiple range test (p⟨0.05).
Means are significantly different between HWE and IDS by t-test (p⟨0.001).