Antioxidant activities of salmon skin collagen peptides in vitro

DPPH and ·OH radicals scavenging activities,as well as linoleic acid autoxidation inhibiting activity of salmon skin collagen peptides were studied to assay the antioxidant activities.Results indicated that salmon skin collagen peptides had strong antioxidant abilities.In a certain concentration range,the maximum scavenging rates to DPPH and ·OH radicals were 81.32%,59.54%,respectively,the linoleic acid autoxidation inhibiting activity was 65.13%,and the corresponding median inhibitory concentrations(IC50 values) were 14.95 mg/mL,20.86 mg/mL and 3.03 mg/mL,respectively.Through the study of antioxidant activities of salmon skin collagen peptides,it provides the reference to further developing and using salmon skin collagen peptides.