Table 6.
Effective concentration values for antioxidant activity in 80% methanol extracts of tofu made from different soybean cultivars

Antioxidant	DPPH radical scavenging1)	ABTS radical scavenging1)	Reducing power2)
activity Tofu	DPPH radical scavenging1)	ABTS radical scavenging1)	Reducing power2)
Taekwang	142.95±7.49C	104.96±5.50C	138.70±0.32C
Gaechuck#1	47.51±1.10A	42.54±0.57A	72.08±1.18A
Gaechuck#2	98.85±1.41B	68.41±2.80B	101.67±0.72B
Jinyang	183.54±7.61D	129.89±3.24D	180.89±1.92D

Effective concentration values (EC50, mg/mL) were calculated from the regression lines using four different concentrations (25, 50, 100 and 200 mg/mL) and their data were presented as 50% scavenging activity.
Reducing power values (EC0.3, mg/mL) were presented by the sample concentration at 0.3 of absorbance value at 700 nm.
Each value represents mean±SD (n=5). Means with different superscripts among the samples are significantly different at p<0.05.