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| 食用油充氮保鲜 |
| Nitrogen filling for edible oil preservation |
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| DOI：10.12166/j.zgyz.1003-7969/2020.07.023 |
| 中文关键词: 食用油 充氮 保鲜 溶氧量 含氧量 |
| 英文关键词:edible oil filling nitrogen preservation dissolved oxygen level oxygen content |
| 基金项目: |
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| 中文摘要: |
| 食用油充氮保鲜是油脂安全的需要。食用油在精炼后进成品油罐、输送管道、暂存小油罐、灌装时会接触空气产生氧化反应，可采用对油罐氮封，对输油管道、灌装充氮的方式对食用油进行充氮保鲜，但此过程中建议对油罐采取上下充氮，在灌装后滴液氮，同时不断完善充氮工艺设计，采取气液混合泵和小分子鼓泡系统，延长氮气留存时间，确保食用油18个月的质保期。 |
| 英文摘要: |
| 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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