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| 分子蒸馏脱除玉米油中3-氯丙醇脂肪酸酯和缩水甘油酯效果的研究 |
| Removal of 3-monochloropropanel-1,2-diol fatty acid esters and glycidyl esters from corn oil by molecular distillation |
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| DOI： |
| 中文关键词: 玉米油 3-氯丙醇脂肪酸酯 缩水甘油酯 分子蒸馏 脱除 |
| 英文关键词:corn oil 3-monochloropropanel-1, 2-diol fatty acid esters glycidyl esters molecular distillation removal |
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| 中文摘要: |
| 研究了分子蒸馏法脱除玉米油中3-氯丙醇脂肪酸酯（3-MCPDE）和缩水甘油酯（GE）的效果。结果表明：蒸馏温度和进油速度是影响3-MCPDE脱除效果的显著因素；在进油速度160 mL/h、刮膜速率240 r/min的条件下，玉米油中3-MCPDE的含量随着蒸馏温度的升高而降低，当蒸馏温度达到230?℃时，玉米油中3-MCPDE的含量即可从2.90 mg/kg降低到0.82 mg/kg，脱除效率达到71.7%；在蒸馏温度210?℃、刮膜速率240 r/min的条件下，玉米油中3-MCPDE的含量随着进油速度的减缓而降低，3-MCPDE的脱除效率在15.9%～60.3%之间；在蒸馏温度210?℃、进油速度160 mL/h的条件下，刮膜速率的改变对玉米油中3-MCPDE的含量影响不显著。在所有实验中，分子蒸馏可以使玉米油中的GE含量从4.73 mg/kg均降至0.5 mg/kg以下，脱除效率均超过91.8%。 |
| 英文摘要: |
| The removal effects of 3-monochloropropanel-1,2-diol fatty acid esters（3-MCPDE） and glycidyl esters（GE） from corn oil by molecular distillation were researched. The results showed that evaporation temperature and feed flow rate obviously influenced the removal efficiency of 3-MCPDE. The 3-MCPDE content decreased with the increase of evaporation temperature under the conditions of stirring speed 240 r/min and feed flow rate 160 mL/h. The content of 3-MCPDE reduced from 2.90 mg/kg to 0.82 mg/kg and the removal efficiency of 3-MCPDE reached 71.7% when evaporation temperature was 230?℃.The 3-MCPDE content decreased with the decrease of the feed flow rate under the conditions of evaporation temperature 210?℃ and the stirring speed 240 r/min, and the removal efficiency of 3-MCPDE ranged from 159% to 60.3%. The stirring speed showed no significantly influence on the content of 3-MCPDE under the conditions of evaporation temperature 210?℃ and feed flow rate 160 mL/h. The content of GE in corn oil after molecular distillation decreased from 4.73 mg/kg to below 0.5 mg/kg, and the removal efficiency exceeded 91.8%. |
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