Table 3. Antioxidant activities of the perilla leaves ethanol extract measured by various antioxidant assays

Ethanol concentration (%)	DPPH (μmol TE/g DM)		SEM	FRAP (mmol TE/g DM)		SEM	ORAC (mmol TE/g DM)		SEM	TPC (mg GAE/g DM)		SEM
	Day 3	Day 6		Day 3	Day 6		Day 3	Day 6		Day 3	Day 6
50	454.80Cb	509.12Aa	1.26	0.65Ba	0.63Ba	0.02	2.41Bb	2.68Ba	0.04	79.15Ca	81.91Ca	1.08
70	502.68Ba	451.74Bb	11.96	0.71Ba	0.71Ba	0.02	2.82Aa	2.90Aa	0.04	81.97Bb	91.48Ba	0.35
90	593.27Aa	521.92Ab	11.34	0.91Ab	0.97Aa	0.01	2.91Aa	2.95Aa	0.03	102.39Ab	114.93Aa	1.45
SEM	10.95	7.88		0.02	0.02		0.05	0.02		0.44	1.44

Means within a column with different superscript differ significantly at p<0.05 (n=3).
Means within a row with different superscript differ significantly at p<0.05 (n=3).
DPPH, 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity; TE, trolox equivalent; DM, dry matter; FRAP, ferric reducing antioxidant power activity; ORAC, oxygen radical absorbance capacity; TPC, total phenolic content; GAE, gallic acid equivalent.