Table 2.

The results of antioxidant activity analyses in vitro (DPPH, ABTS and FRAP)

Sample	IC50 values (mg/L)		FRAP mmol FeSO4/g
	DPPH scavenging	ABTS scavenging
PTB	548.24 ± 8.93a	626.49 ± 9.75a	0.11 ± 0.01a
PFB	285.81 ± 5.31b	348.62 ± 6.30b	0.42 ± 0.03b
ETB	65.25 ± 1.85c	78.40 ± 2.51c	2.45 ± 0.05c
EFB	5.94 ± 0.46d	11.69 ± 0.64d	6.92 ± 0.10d
Trolox	3.52 ± 0.27e	3.68 ± 0.31e	–

Within a row, different letters (a, b, c, d and e) indicate significant differences with p < 0.05