Table 6. Antioxidant activity of cheonggukjang added with brewer’s spent grain

Addition ratio of BSG (%)	IC₅₀ value (μg/mL)
Addition ratio of BSG (%)	DPPH radical scavenging activity	ABTS radical scavenging activity
0	440.67±14.59^1)C2)	755.74±4.79^d
5	409.56±7.03^b	680.06±6.57^c
10	385.70±17.07^b	629.00±4.08^b
15	307.21±11.08^a	559.82±2.44^a

Values are mean±SD (n=3).
Values with different superscript letters (^a-d) in the same column are significantly different at p<0.05 by Duncan’s multiple range test.