Antioxidant activity in cooked and simulated digested eggs
2014
Remanan, M. K. | Wu-O, Jess
The avian egg is an excellent source of nutrients consisting of components with beneficial properties but there is limited knowledge on the effect of cooking methods and gastrointestinal digestion on the antioxidant activity of eggs. The present study was focused on the effect of cooking and simulated gastrointestinal digestion on antioxidant activity of eggs using ORAC, ABTS and DPPH assays. The results suggest that fresh egg yolk has higher antioxidant activity than fresh egg white and whole eggs. Cooking reduced whereas simulated gastrointestinal digestion increased the antioxidant activity of eggs. Boiled egg white hydrolysate showed the highest antioxidant activity; a total of 63 peptides were identified, indicative of the formation of novel antioxidant peptides upon simulated gastrointestinal digestion. This study suggests the potential role of eggs as a dietary source of antioxidants.
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