Table 2. DPPH radical scavenging activities of P. chinense Purch seed extracts using different extraction solvent

Extraction solvent	Scavenging activity (%)				IC₅₀ (μg/mL)	Ascorbic acid¹⁾ IC₅₀ (μg/mL)
Extraction solvent	50 (μg/mL)	40 (μg/mL)	20 (μg/mL)	10 (μg/mL)	IC₅₀ (μg/mL)	Ascorbic acid¹⁾ IC₅₀ (μg/mL)
Water	58.62±1.99^b2)	45.95±1.79^b	28.29±1.50^b	12.80±0.42^c	42.65±1.58^a
75% ethanol	73.92±1.18^a	64.38±1.09^a	42.45±0.49^a	22.46±0.19^b	30.09±0.42^b	20.00±0.48
75% methanol	77.99±1.00^a	69.40±2.19^a	45.74±0.77^a	24.78±0.47^a	27.60±0.13^b

Ascorbic acid was used as a positive control.
Mean±SE (n=3) within each column followed by different letters are significantly different (p<0.05).