Identification and characterization of antioxidant peptides from hydrolysate of blue-spotted stingray and their stability against thermal, pH and simulated gastrointestinal digestion treatments

•Antioxidant peptides WAFAPA and MYPGLA were identified from Dasyatis kuhlii.•Synergism between WAFAPA and MYPGLA was detected.•Both peptides protected lipid, DNA and protein against oxidation.•Both peptides were stable under heat and pH treatments.•Antioxidant activity of MYPGLA was unaffected by g...

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