Table 3. ATBS⁺ radical scavenging activities of extracts from each part of Akebia quinata

Samples1)	Scavenging activity (%)					IC50 values (μg/mL)
	62.5 μg/mL	125 μg/mL	250 μg/mL	500 μg/mL	1,000 μg/mL
AFW	61.60±0.233)g4)	70.76±0.09g	78.71±0.13f	83.67±0.10g	86.40±0.10g	50.61±0.14a
ALW	82.70±0.13c	87.37±0.17c	92.82±0.09b	95.60±0.19c	97.61±0.21c	37.79±0.08e
ASW	72.16±0.12e	81.09±0.06e	86.40±0.11d	88.63±0.09e	90.30±0.14e	43.31±0.09c
AFE	67.51±0.14f	74.34±0.14f	80.53±0.12e	86.28±0.23f	88.99±0.19f	46.27±0.12b
ALE	86.29±0.18b	90.19±0.13b	94.35±0.20a	96.41±0.20b	98.28±0.16b	36.22±0.10f
ASE	75.49±0.27d	83.49±0.14d	87.73±0.28c	90.67±0.20d	93.42±0.15d	41.37±0.18d
Ascorbic acid2)	87.56±0.20a	91.17±0.11a	94.54±0.17a	97.08±0.06a	99.49±0.13a	35.69±0.25g

AFW, extracts from Akebia quinata fruit by hot-water; ALW, extracts from Akebia quinata leaf by hot-water; ASW, extracts from Akebia quinata stem by hot-water; AFE, extracts from Akebia quinata fruit by 70% ethanol; ALE, extracts from Akebia quinata leaf by 70% ethanol; ASE, extracts from Akebia quinata stem by 70% ethanol.
Ascorbic acid was used as a positive control substance.
All values are mean±SD (n=5).
Means with different superscript letters (^a-g) in the same column are significantly different at p<0.05 by Duncan’s multiple range test (a>b>c>d>e>f>g).