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Cyclic nitrogen-filling process for vegetable oil
  
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KeyWord:vegetable oil  oxidative rancidity  nitrogen  cycle nitrogen-filling  gas-liquid mixed pump
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Author NameAffiliation
HU Qian，ZENG Yi  
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Abstract:
      The oxygen dissolved amount in oil associated with oxidative rancidity speed of oil, and oxygen absorbed by oil could reach 15%-150% of its volume or 0.02%-0.2% of its mass. Using the high strength characteristics of gas-liquid mixed pump 99.99% of nitrogen gas under the conditions of pressure 0.05-0.15 MPa and flow rate 5.0-150.0 L/min were fully mixed with vegetable oil for 12-24 h, forcing the replacement and dischargement of oxygen absorption in oil, in order to improve the storage stability of vegetable oil, and effectively prevent the phenomenon of flat bottle of PET bottles.
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