The total protein, peptide content, amino acid composition, molecular weight distribution, and potential functional active peptides of silky fowl peptides were investigated. Results showed that the total protein content (dry basis) of silky fowl peptides was 94.88%, the peptide content (dry basis) was 78.93%, the amino acid composition was rich, and the molecular mass was mainly distributed below 1 000 Da, accounting for 91.04%. In addition, 5 characteristic peptide components with potential functional activities were identified from silky fowl peptides by ultra-fast liquid chromatography tandem triple quadrupole mass spectrometry method, including glutyl-arginine dipeptide (ER), isoleucyl arginine dipeptide (IR), asparagyl-arginine dipeptide (NR), prolyl-aspartyl-arginine tripeptide (PDR), and alanyl-alanyl-arginine tripeptide (AAR), the content of which was 0.14-4.28 mg/g, laying a material foundation for the application of silky fowl peptides to nourishing blood in nutritious and healthy food.
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