Table 12.

TEAC values determined against DPPH radicals applied in aqueous methanol (radical solution in methanol) after standard reaction time.

Antioxidant	50% MeOH + MeOH 30 min			80% MeOH + MeOH 30 min
	A = 0.2 × Ac	A = 0.5 × Ac	A = 0.8 × Ac	A = 0.2 × Ac	A = 0.5 × Ac	A = 0.8 × Ac
gallic acid		3.37		2.53	2.93	3.23
ferulic acid	0.67	0.92	0.96	0.41	0.57	0.69
catechin	1.66	2.08	3.00	1.30	1.51	1.67
quercetin		N.A. 1			2.80
propyl gallate		2.62			2.32
glutathione	0.28	0.43	0.92		N.A.
carnosine		N.D. 2			N.A.
cysteine		0.53			N.A.
histidine		~0.0002			N.A.
ascorbic acid		0.80 3			0.97
Trolox		1.00			1.00
phenolic mixture	1.89	2.18	2.73		N.T. 4
polar mixture	1.34	1.45	1.60		N.A.

¹ N.A.—not applicable. ² N.D.—activity not detected. ³ No non-linear relationship found. ⁴ N.T.—not tested.