Table 3
Compar ison of DPPH and ABTS radical scavenging ability of Oenothera biennis obtained by different extraction methods

Samples¹⁾	DPPH (μg/mL, %)			ABTS (μg/mL, %)
Samples¹⁾	10	100	1000	10	50	100
SE	12.87±0.09^c2)	66.73±1.01^c	94.44±0.32^bc	19.05±0.32^b	56.38±2.00^a	98.39±0.62^ab
USE	13.01±0.14^c	72.52±0.37^d	93.89±0.23^bc	18.64±0.78^ab	62.53±1.99^cd	98.81±0.97^ab
RE	13.19±0.51^c	74.40±0.60^e	94.07±0.05^bc	19.70±0.84^b	65.29±2.19^d	99.63±0.08^ab
AE	13.14±0.55^c	71.14±0.37^d	93.15±0.69^b	18.32±0.69^ab	61.34±1.87^bc	99.17±0.7^2a
LE	9.70±0.32^b	71.09±0.14^d	94.99±0.97^cd	17.36±0.48^a	58.03±0.76^ab	97.98±1.95^ab
BHA	9.56±0.46^b	58.36±1.65^b	96.00±0.60^de	48.50±0.37^d	77.21±0.51^f	99.88±0.05^b
BHT	5.19±0.87^a	13.74±1.88^a	60.43±1.70^a	42.68±0.41^c	73.31±3.30^e	98.99±0.84^ab
VitC	9.83±0.49^b	94.62±0.23^f	96.46±0.23^e	51.81±1.75^e	80.21±2.16^g	99.69±0.14^ab

SE, stirrer extraction; USE, ultrasonification extraction; RE, reflex extraction; AE, autoclave extraction; LE, low temperature high pressure extraction; BTA, butylated hydroxyanisole; BHT, butylated hydroxytoluene.
a-gMeans with different superscripts within a column indicate significant differences (p<0.05).