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Effect of refining on quality of rapeseed oil
  
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KeyWord:rapeseed oil  refining  physicochemical indicator  trace element  quality
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Author NameAffiliation
MA Qibing,BAO Lilin,XIONG Weilin,etc  
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Abstract:
      During refining, the physicochemical indicators and trace elements in rapeseed oil will change. And these changes have a decisive influence on the quality of rapeseed oil. Four kinds of rapeseed oils (crude oil, neutralized oil, bleached oil and deodorized oil) of the same batch of refining procedure were analyzed and determined to study the effect of refining on oil quality. The results showed that after refining, the acid value,peroxide value,color and phosphorus content of rapeseed oil decreased, the contents of VE, sterols, polyphenols and squalene reduced significantly with loss rates 27.82%, 25.34%, 9121% and 79.69% respectively, while the contents of trans fatty acid and 3-chloropropanol changed little.
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