Table 5
ABTS radical scavenging abilities of 70% ethanol extracts of grape seed prepared with different drying methods

Samples¹⁾	Concentration(μg/mL)			Positive control²⁾(50μg/mL)
Samples¹⁾	50	100	500	AA	BHA	BHT
GFSF	42.29±2.78^a3)	81.50±2.54^a	86.66±1.53^a	98.61±0.13^A	97.96±0.16^B	90.96±0.61^C
GFSI	29.45±2.85^b	68.21±1.84^b	86.20±0.09^ab
GFSH	25.03±1.53^b	65.36±1.65^b	85.86±0.06^b
GFSS	28.99±3.28b	77.99±1.50^a	86.11±0.12^ab

¹⁾Abbreviations: GSFD, ethanol extract of grape seed with freeze drying; GSIR, ethanol extract of grape seed with infrared drying; GSHD, ethanol extract of grape seed with heat air drying; GSSD, ethanol extract of grape seed with sun drying.
²⁾AA, L-ascorbic acid; BHA, butylated hydroxyanisole; BHT, butylated hydroxytolune.
³⁾Values are means±SD of triplicate determinations. Different superscripts within a column (a-c) and row (A-C) indicate significant differences (p<0.05).