Team:SDSZ China/Team

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      无标题 1

  
      

  
       

  
       

  
       

  
                                       
  
       

  
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       experiment

  
       

  
      

  
       

  
       
  
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           apparatus

  
      

  
       

  
        

  
        
  
        Chitin is an abundant natural macromolecular substances in the 
  
        exoskeleton of arthropods. It could be converted by deacetylation to 
  
        chitosan, which is -1, 4- polymer of 2-glucosamine. Chitosan is 
  
        significantly soluble and bioactive, being widely used in medicine, 
  
        cosmetics, food industry, water treatment and chemical industry. Treated 
  
        with concentrated alkali, the current technology of chitosan production 
  
        is deficient, unstable, squandering of energy, and, especially, 
  
        contaminative.According to a currently promising technology of 
  
        deacetylation using chitin-active enzymes, we found out that Chitin 
  
        Deacetylase (CDA) could hydrolyze the acetamino group on chitin, 
  
        directly yielding chitin, and the only industrial-available source of 
  
        chitin is the especially high-crystallized chitin from shell of 
  
        crustacea like shrimp and crab. In order to applicate enzymolysis method 
  
        to industry, separation, identification and production of 
  
        crystal-chitin-active-enzymes is crucial, both promoting 
  
        industrialization and giving instruction to scientific research.

  
       

  
       

  
      

  
      

  
       
  
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        human practice

  
      

  
      

  
      

  
      

  
      

  
      

  
      

  
      

  
      

  
      

  
       

  
       

  
       

  
      
 

  
      
 

  
      
 

  
      
 

  
      
 

  
      
 

  
      
 

  
      
 

  
      
  
       
 

  
       

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

  
       
 

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