DOI: 10.21276/sajp.2016.5.12.3

Pages: 421-424

Studies on amino acid composition and antioxidant activities of collagen Polypeptides from the Holothuria nobilis Selenka were carried out in this paper. Results revealed that collagen polypeptides mainly contains glycine(Gly), alanine(Ala), glutamate (Glu), proline (Pro) and hydroxyproline (Hyp) with high medicinal values and good tasting. The rate of delicious amino acid, pharmacodynamics amino acid and essential amino acid in the total collagen polypeptide were accounted for 65.1%, 58.08% and 24.96% with IC50 value of 5.78 mg/ml, 4.20mg/ml and 0.27mg/ml in the antioxidant free-radical tests, respectively.