Objective: To research composition and activity of the organic matters from oyster shell.
Methods: Oyster shell powder was extracted by water. The organic matters were analyzed by biuret method. Then by anion exchange chromatography and reverse C8 column chromatography, oligopeptide extract was obtained from oyster shell and its antioxidant properties was researched.
Results: Oyster shell organic matters were mainly composed of oligopeptide constituents and total peptide content was about 38.02%. The product had strong DPPH x free radical and superoxide anion free radical scavenging ability.
Conclusion: Oligopeptide from oyster shell has good development prospect for antioxidant drug and health protecting food.