Optimization of urea inclusion process for separation of unsaturated fatty acids from peony seed oil
  
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KeyWord:peony seed oil  urea inclusion  α-linolenic acid  GC
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DONG Xiuting, YANG Guo en, WANG Qiumin,etc  
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Abstract:
      Orthogonal experimental design was used to optimize the unsaturated fatty acid enrichment of peony seed oil by urea inclusion method. The effects of urea-ethanol ratio, inclusion temperature and inclusion time on the α-linolenic acid content were investigated. The results showed that the optimal process conditions were obtained as follows: urea-95%ethanol ratio 3∶?9, inclusion temperature 0?℃ and inclusion time 15 h. Under these conditions, the content of α-linolenic acid reached 64.95%. The urea inclusion method could effectively extract unsaturated fatty acids from peony seed oil, and increase the content of α-linolenic acid.
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