ACE-inhibitory and Antioxidant Peptides from Coconut Cake Albumin Hydrolysates: Purification, Identification and Synthesis
Overview
Authors
Affiliations
Coconut cake albumin was hydrolysed by sequential digestion with alcalase, flavourzyme, pepsin and trypsin to purify bioactive peptides with ACE-inhibitory and antioxidant activities. Following fractionation with sequential ultrafiltration, Sephadex gel chromatography and RP-HPLC, three novel peptides KAQYPYV, KIIIYN and KILIYG were identified. KAQYPYV, KIIIYN and KILIYG provided an IC value of 37.06 μM, 58.72 μM and 53.31 μM on ACE-inhibitory activity, respectively. For hydroxyl radical scavenging activity, KAQYPYV, KIIIYN and KILIYG demonstrated an IC value of 70.84 μM, 77.62 μM and 95.23 μM, respectively. All the three peptides exhibited a mixed modality of noncompetitive and uncompetitive inhibition on ACE and KAQYPYV showed good stability against gastrointestinal enzymes digestion. Moreover, these peptides could effectively lower intracellular endothelin-1 content without significant cytotoxicity, and protected vascular endothelial cells from reactive oxygen species mediated damage. Furthermore, KAQYPYV, KIIIYN and KILIYG also demonstrated high ion chelating ability (62.13% ± 4.21%, 64.66% ± 5.51% and 69.82% ± 7.24% at 0.1 mg mL, respectively) and considerable superoxide radical scavenging activity (39.30% ± 2.72%, 46.79% ± 1.70% and 51.16% ± 3.23% at 1.0 mg mL, respectively). These results indicate that coconut cake albumin is a potential source of bioactive peptides possessing ACE-inhibitory and antioxidant activities.
Jack Bean () Tempeh: ACE-Inhibitory Peptide Formation during Absorption in the Small Intestine.
Puspitojati E, Cahyanto M, Marsono Y, Indrati R Food Technol Biotechnol. 2023; 61(1):64-72.
PMID: 37200791 PMC: 10187565. DOI: 10.17113/ftb.61.01.23.7635.
Hu X, Dai Z, Jin R Foods. 2022; 11(13).
PMID: 35804705 PMC: 9265830. DOI: 10.3390/foods11131889.
Fadimu G, Le T, Gill H, Farahnaky A, Olatunde O, Truong T Foods. 2022; 11(13).
PMID: 35804638 PMC: 9265340. DOI: 10.3390/foods11131823.
Mujtaba N, Jahan N, Jamal A, Abrar S, Kiran S, Rasool A Biomed Res Int. 2022; 2022:2396192.
PMID: 35769673 PMC: 9236789. DOI: 10.1155/2022/2396192.
Isolation and identification of an antioxidant collagen peptide from skipjack tuna () bone.
Ding D, Du B, Zhang C, Zaman F, Huang Y RSC Adv. 2022; 9(46):27032-27041.
PMID: 35528566 PMC: 9070664. DOI: 10.1039/c9ra04665h.