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| Nitrogen filling for edible oil preservation |
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| DOI：10.12166/j.zgyz.1003-7969/2020.07.023 |
| KeyWord:edible oil filling nitrogen preservation dissolved oxygen level oxygen content |
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| Abstract: |
| Nitrogen filling in edible oil preservation is the requirement of edible oil safety. The finished oils in the finished oil tank, transfer pipes and oil filling lines can contact with air to produce oxidation reaction. The edible oil can be preserved with nitrogen by nitrogen sealing for oil tanks and nitrogen filling for transfer pipes, buffer tanks and oil filling lines. In order to ensure the 18 months’ shelf life for edible oil, some suggestion were proposed,such as filling nitrogen on top and under the oil storage tanks respectively,filling liquid nitrogen to the oil bottles after filling oils,continuously improving the nitrogen filling process design, and adopting a gas-liquid mixing pump and a small molecule bubble system to extend the nitrogen retention time. |
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