title: [Study on extraction of antioxidant oligopeptide from oyster shell].
abstract: 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.
  
  
  CONCLUSIONS
  Oligopeptide from oyster shell has good development prospect for antioxidant drug and health protecting food.
authors.forename: Jiang-Juan
authors.initials: JJ
authors.lastname: Shao
authors.forename: Zhong
authors.initials: Z
authors.lastname: Yao
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.forename: Tao
authors.initials: T
authors.lastname: Chen
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Chen
mesh_terms: D060105:Animal Shells / Q000737:chemistry*; D000818:Animals; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000737:chemistry; D016166:Free Radical Scavengers / Q000302:isolation & purification / Q000494:pharmacology; D006358:Hot Temperature; D009842:Oligopeptides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D010125:Ostreidae / Q000737:chemistry; D010851:Picrates / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013481:Superoxides / Q000737:chemistry; D013678:Technology, Pharmaceutical / Q000379:methods; D014867:Water
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D009842:Oligopeptides; D010851:Picrates; D014867:Water; D013481:Superoxides; C004931:1,1-diphenyl-2-picrylhydrazyl