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Fractionation and identification of antioxidant peptides from an enzymatically hydrolysed Palmaria palmata protein isolate.

Food Res Int.. 2017-10; 
Harnedy PA, O'Keeffe MB, FitzGerald RJ.
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摘要

Proteins derived from the macroalgal species Palmaria palmata have emerged as potential substrates for the generation of bioactive peptides. The aim of this study was to fractionate, identify and characterize antioxidant peptides from a P. palmata protein hydrolysate. The P. palmata protein hydrolysate generated with the food-grade proteolytic enzyme Corolase PP was sequentially fractionated using solid phase extraction and semi-preparative (SP) RP-HPLC. The most active SP-RP-HPLC peptide fraction (SP-RP-HPLC-30-F26) was analysed by ESI-MS/MS. Seventeen novel peptide sequences were identified in this fraction. Of the peptides selected for synthesis, Ser-Asp-Ile-Thr-Arg-Pro-Gly-Gly-Asn-Met, showed the highest ox... More

关键词

Antioxidant; Antioxidant peptide; Bioactive peptide; Food protein hydrolysates; Palmaria palmata; Peptide identification; Simulated gastrointestinal digestion