Angiotensin-I-converting enzyme and prolyl endopeptidase inhibitory peptides from natural sources with a focus on marine processing by-products

► Review of ACE-I and PEP inhibitory peptides from natural sources. ► ACE-I and PEP inhibitors from marine sources are described. ► Isolation and characterisation of ACE-I and PEP inhibitory peptides are outlined. ► Potential for high-value bioactive peptides from marine processing waste streams.