Table 2.

ACE inhibitory COS derived from marine resources: derivatives and IC₅₀ values.

COS derivative	IC50	Ref.
Chitosan trimer	0.9 μM	[61]
Chitosan oligosaccharides	1.22 mg/mL	[73]
Chitin derivatives
AEC	0.064 μM	[74]
AEC 50	0.038 μM	[74]
AEC 90	0.103 μM	[74]
Aminoethyl-COS (AE-COS)	0.80 μg/mL	[75]
Captoprila	0.1 μM	[74]

^apositive control