title: [Decolorization of chitin from Catharsius molossus discards].
abstract: OBJECTIVE
  Decolorization of crude chitin from Catharsius molossus was studied in order to prepare chitosan with white color and high viscosity.
  
  
  METHODS
  Some factors affecting decolorization such as the kind of decolorant reagent, H2O2 concentration, pH, solid-liquid ratio, temperature and other factors were studied by single factor test and orthogonal design.
  
  
  RESULTS
  The best decolorization process of chitin from Catharsius molossus was as follows:treated with 15 times of 15% H2O2 at 45 degrees C.
  
  
  CONCLUSIONS
  The process is stable and feasible. The chitosan from Catharsius molossus might be used as a new carrier of colon-specific drug delivery system.
authors.forename: Cheng-Jia
authors.initials: CJ
authors.lastname: Tan
authors.forename: Jia-Hua
authors.initials: JH
authors.lastname: Ma
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Chao
authors.initials: C
authors.lastname: Xin
mesh_terms: D000818:Animals; D002626:Chemistry, Pharmaceutical / Q000379:methods; D002686:Chitin / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D001517:Coleoptera / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008419:Materia Medica / Q000737:chemistry*; D013696:Temperature; D014783:Viscosity
chemical_list: D008419:Materia Medica; D002686:Chitin; D048271:Chitosan; D006861:Hydrogen Peroxide