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Supercritical CO2 extraction of Aquilaria sinensis (Lour.) Gilg seed oil and its physicochemical indexes analysis
  
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KeyWord:Aquilaria sinensis (Lour.) Gilg seed  Aquilaria sinensis (Lour.) Gilg seed oil  supercritical CO2 extraction  physicochemical index
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DUAN Minghui, PAN Jiangbo, ZHOU Aoao，etc  
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Abstract:
      The supercritical CO2 extraction process of Aquilaria sinensis (Lour.) Gilg seed oil was studied and the fatty acid composition and physicochemical indexes of the seed oil were also analyzed. The results showed that the optimal extraction conditions were obtained as follows: particle size 20-30 meshes, extraction pressure 30 MPa, extraction temperature 45?℃, extraction time 80 min, separation kettle Ⅰ pressure 11 MPa and separation kettle Ⅰ temperature 50?℃. The average yield of Aquilaria sinensis (Lour.) Gilg seed oil was 41.2% under these conditions, which was similar to 41.9% of the yield by petroleum ether extraction. The Aquilaria sinensis (Lour.) Gilg seed oil was abundant in fatty acids, in which the content of unsaturated fatty acid was higher than 80%, and the main components were oleic acid, palmitic acid, linoleic acid and stearic acid.
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