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Microwave-assisted extraction and antioxidant activity of polysaccharide from walnut shell
  
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KeyWord:walnut shell  polysaccharide  microwave-assisted extraction  antioxidant activity
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TANG Huimin, LI Maoxing  
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Abstract:
      The microwave-assisted extraction process and antioxidant activity of walnut shell polysaccharide were investigated. The results showed that the optimal microwave-assisted extraction conditions were obtained as follows: solid-liquid ratio 1∶?40, extraction temperature 70?℃ and extraction time 6 min. Under these conditions, the extraction rate of walnut shell polysaccharide was 2.24%. The walnut shell polysaccharide had better scavenging activity on ·OH and O-2·, and the scavenging rates showed dose-effect relationship to a certain extent.
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