title: [Determination of anti-oxidative activity of different fractions of Xinjiang red raspberry fruits extract].
abstract: OBJECTIVE
  To determination total phenolics content of raspberry different polar solvent extracts was measured by Folin-Ciocalteu method.
  
  
  METHODS
  Red raspberry fruits were extracted with 95% ethanol, defatted with petroleum ether, and then partitioned with petroleum ether, ethyl acetate and butanol successively. Total phenolic content of each part was measured by Folin-Ciocalteu method and calculated as gallic acid equivalents (GAE). Stability of the method were assayed with RSD (relative standard deviation). Antioxidant activities of the different extractions were evaluated with DPPH* and OH* scavenging assay.
  
  
  RESULTS
  (1) The method had high quality of precision, stability, repetition rate. (2) Total phenolic contents were varied from GAE 10.56 mg/g to GAE 96.76 mg/g as gallic acid equivalent, and ethyl acetate extracts had the highest total phenolic content (GAE 96.76 mg/g). (3) The crude extracts and different soluble fractions showed good antioxidative activities.
  
  
  CONCLUSIONS
  Raspberry could be good resource of natural antioxidant.
authors.affiliation: College of Public Health, Xinjiang Medical University, Urumqi 830054, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Han
authors.forename: Liqian
authors.initials: L
authors.lastname: Hai
authors.forename: Peipei
authors.initials: P
authors.lastname: Chen
authors.forename: Shabor
authors.initials: S
authors.lastname: Mirban
authors.lastname: Nurdana
authors.forename: Jiwen
authors.initials: J
authors.lastname: Liu
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000032:analysis / Q000494:pharmacology; D005638:Fruit / Q000737:chemistry; D062385:Hydroxybenzoates / Q000032:analysis; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D027824:Rosaceae / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D062385:Hydroxybenzoates; D010936:Plant Extracts; C017616:phenolic acid