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Ballatore, María Belén; Bettiol, Marina del Rosario; Vanden Braber, Noelia L.; Aminahuel, Carla Aylen; Rossi, Yanina Estefanía; Petroselli, Gabriela; Erra-Balsells, Rosa; Cavaglieri, Lilia René; Montenegro, Mariana Angélica
Food chemistry, 07/2020, Letnik: 319Journal Article
•Hydrolysis conditions by trypsin regulate the antioxidant activity of WPC hydrolysates.•Optimal hydrolysis parameters produce powerful antioxidant peptides at low cost.•Peptides with molecular weight <3 kDa shown high antioxidant activities.•WPC hydrolysis increases cytoprotection against oxidative stress on IEC-18 cells. Whey protein is one of the most relevant co-products manufactured by the dairy industry and it is a powerful environmental pollutant. Therefore, the enzymatic hydrolysis of whey protein concentrate (WPC 35) to produce antioxidant peptides is an innovative approach which can provide added value to whey. The WPC 35 hydrolysis with trypsin was carried out for 4.31 h at 41.1 °C with an enzyme/substrate ratio of 0.017. Under such hydrolysis conditions, the peptides produced have the highest radical scavenging activity and cytoprotector effect. The WPC hydrolysate and a permeate ≤3 kDa were characterized by SDS-page, RP-HPLC and MALDI-TOF-MS. Furthermore, O2•− and HO• scavenging activity and the cytoprotective effect against a stress agent in epithelial cells of the rat ileum (IEC-18) were determined. In this study, strong antioxidant and cytoprotective peptides were obtained from a low-cost dairy industry product, which could improve consumers’ health when used as functional ingredients.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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