Whey Protein Concentrate as a Novel Source of Bifunctional Peptides with Angiotensin-I Converting Enzyme Inhibitory and Antioxidant Properties: RSM Study

Autor: Fatima Abdelhameed Hussein, Shyan Yea Chay, Mohammad Zarei, Shehu Muhammad Auwal, Azizah Abdul Hamid, Wan Zunairah Wan Ibadullah, Nazamid Saari
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Foods, Vol 9, Iss 1, p 64 (2020)
Druh dokumentu: article
ISSN: 2304-8158
DOI: 10.3390/foods9010064
Popis: Whey protein concentrate (WPC) is a unique source of protein with numerous nutritional and functional values due to the high content of branched-chain amino acid. This study was designed to establish the optimum conditions for Alcalase-hydrolysis of WPC to produce protein hydrolysates with dual biofunctionalities of angiotensin-I converting enzyme (ACE) inhibitory and antioxidant activities via response surface methodology (RSM). The results showed that the optimum conditions were achieved at temperature = 58.2 °C, E/S ratio = 2.5%, pH = 7.5 and hydrolysis time = 361.8 min in order to obtain the maximum DH (89.2%), ACE-inhibition (98.4%), DPPH• radical scavenging activity (50.1%) and ferrous ion chelation (73.1%). The well-fitted experimental data to predicted data further validates the regression model adequacy. Current study demonstrates the potential of WPC to generate bifunctional hydrolysates with ACE inhibition and antioxidant activity. This finding fosters the use of WPC hydrolysate as a novel, natural ingredient for the development of functional food products.
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