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Excessively residual solvent in pressed vegetable oil
  
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KeyWord:physical pressing  solvent residue  pentane
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CHEN Tongqiang,LI Can,DENG Ming，etc  
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Abstract:
      Pressed vegetable oil was produced by pressing without No.6 solvent, but excessively residual solvent was found in some vegetable oils. The pressed vegetable oil without No.6 solvent residue was heated for 30 min at different temperatures,and then was used to detect the residual solvent.The result showed that the solvent could be detected in the oil heated at more than 120?℃,and the solvent was confirmed as pentane by GC-MS, which was easily to be considered as No.6 solvent residual in the test.
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