Table 1
Antioxidant activity of extracts from Aster scaber

Type	Sample	Antioxidant activity (%)
		Phenolic content (μg/mL)
		50	100	150	200
DPPH	Water extracts	87.47±0.56^a1)	89.69±0.28^ab	88.39±1.53^ab	90.62±1.16^b
	Ethanol extracts	90.71±1.37^bc	87.37±1.32^a	90.25±3.28^b	93.13±1.68^c
	BHT	51.83±0.40^a	67.20±0.13^b	73.14±0.35^c	75.88±0.48^d
ABTS	Water extracts	99.02±0.36^b	99.23±0.15^b	98.46±0.41^ab	98.05±0.18^a
	Ethanol extracts	98.82±0.32^a	98.82±0.09^a	98.11±0.18^a	98.31±0.15^a
	BHT	4.54±1.21^a	64.12±0.48^b	82.29±0.68^c	85.53±0.82^c
Antioxidant protection factor	Water extracts	1.14±0.05^a	1.49±0.07^b	1.51±0.12^b	1.87±0.02^c
	Ethanol extracts	1.28±0.03^a	1.59±0.03^b	1.93±0.09^c	2.22±0.03^d
	BHT	1.92±0.01^a	2.18±0.01^b	2.31±0.01^c	2.46±0.03^d
TBARs	Water extracts	95.10±0.20^b	96.74±0.10^bc	97.28±0.35^c	93.56±0.27^a
	Ethanol extracts	96.65±0.98^a	99.95±1.78^b	99.96±0.98^b	99.95±4.42^b
	BHT	97.77±0.31^a	97.30±0.72^a	97.36±0.96^a	97.66±0.72^a

Mean±SD (n=6), means with different superscript letters within level are significantly different at p<0.05 by Duncan's multiple range tests. BHT was used for control.