Table 2.

1,1-Diphenyl-2-picrylhydrazyl radical 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl (DPPH) free radical scavenging activities, 2,2′-amino-di(2-ethyl-benzothiazoline sulphonic acid-6)ammonium salt (ABTS) free radical scavenging activities, and the iron reducing ability of NP, PC, and PCD samples.

Samples	DPPH Free Radical Scavenging Ability (%)	ABTS Free Radical Scavenging Ability (%)	Iron Reducing Ability (Abs)
PPI	23.6 ± 0.3 a	22.4 ± 0.3 a	0.063 ± 0.002 a
PPI-CA	62.2 ± 0.6 b	95.7 ± 0.3 b	0.340 ± 0.002 b
PPI-CA-Dex	68.1 ± 0.5 c	97.1 ± 0.3 c	0.373 ± 0.002 c
SPI	22.0 ± 0.3 a	21.1 ± 0.2 a	0.029 ± 0.002 a
SPI-CA	55.7 ± 0.5 b	83.4 ± 0.3 b	0.265 ± 0.002 b
SPI-CA-Dex	59.6 ± 0.2 c	86.5 ± 0.4 c	0.295 ± 0.001 c
RBPI	18.7 ± 0.4 a	17.7 ± 0.2 a	0 a
RBPI-CA	57.9 ± 0.4 b	90.0 ± 0.2 b	0.314 ± 0.002 b
RBPI-CA-Dex	62.4 ± 0.3 c	94.3 ± 0.3 c	0.360 ± 0.002 c
WPI	21.7 ± 0.2 a	20.0 ± 0.3 a	0 a
WPI-CA	54.8 ± 0.6 b	77.5 ± 0.4 b	0.264 ± 0.002 b
WPI-CA-Dex	58.6 ± 0.3 c	80.8 ± 0.3 c	0.292 ± 0.002 c

a–c indicated the significant difference between NP, PC and PCD samples under the same protein and same antioxidant activity (p < 0.05)