Table 2. Antioxidant activities (IC₅₀ value mg/mL) of identified peptides derived from de novo peptide sequencing of the fraction F2.

Peptide sequence	ABTS radical scavenging	FRAP value	Metal chelating
IAWGK	0.28^h	0.63^g	2.40^g
VDLL	0.46^g	2.59^e	4.39^b
MTTPNK	0.65^f	4.52^a	2.83^f
MPLVR	1.20^e	2.42^f	3.24^e
KIII	1.24^ed	3.25^d	3.22^e
LPQL	1.28^d	3.99^b	4.24^c
TVIL	1.34^c	3.52^c	3.24^e
DFPGLQ	2.42^b	No activity	4.62^a
VEDVK	4.21^a	0.40^g	3.70^d

Different letters in the same column indicate significant differences (p<0.05).
ABTS, 2,2-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid); FRAP, ferric reducing antioxidant power.