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Table 4 Antioxidant and ACE inhibitory activities for the enzymatic hydrolysates of PBB

From: Antioxidant and angiotensin I-converting enzyme inhibitory activities of northern shrimp (Pandalus borealis) by-products hydrolysate by enzymatic hydrolysis

Sample

ABTS+scavenging activity

IC50 (mg/mL)1

SOD-like activity

IC50 (mg/mL)

Reducing power

EC50 (mg/mL)2

ACE inhibitory activity

IC50 (mg/mL)

Alcalase

0.16 ± 0.023, c

2.82 ± 0.72a

9.42 ± 0.82a

0.11 ± 0.01b

Protamex

0.17 ± 0.00b, c

2.04 ± 0.15a

6.75 ± 0.94b

0.08 ± 0.00c

Flavourzyme

0.20 ± 0.00a, b

3.13 ± 0.51a

4.63 ± 0.15c

0.11 ± 0.00b

Papain

0.21 ± 0.03a

2.59 ± 0.48a

4.46 ± 0.31c

0.11 ± 0.01b

Trypsin

0.22 ± 0.02a

2.44 ± 0.13a

6.62 ± 0.06b

0.13 ± 0.00a

L-Ascorbic acidA

0.004 ± 0.000d

0.02 ± 0.00b

0.04 ± 0.00d

 

CaptoprilB

   

0.00002 ± 0.00000d

  1. 1IC50 (50 % inhibitory concentration) values of ABTS+ scavenging, SOD-like, and ACE inhibitory activities were expressed as a mean ± SD
  2. 2The reducing power was expressed as an EC50 (concentration of the 0.5 absorbance) value
  3. 3Means within the same row with different superscripts are significantly different by Duncan’s multiple range test (P < 0.05)
  4. A l-ascorbic acid was used as a positive control of ABTS+ radical scavenging and SOD-like activities and reducing power
  5. BCaptopril was used as a positive control of ACE inhibitory activity