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| 玉米油脱臭条件对3-氯丙醇酯和缩水甘油酯影响的研究 |
| Effect of corn oil deodorization on 3-MCPD esters and glycidol esters |
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| DOI： |
| 中文关键词: 玉米油 脱臭 3-氯丙醇酯 缩水甘油酯 |
| 英文关键词:corn oil deodorization 3-MCPD esters glycidol esters |
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| 中文摘要: |
| 以玉米油为原料，研究水蒸气蒸馏脱臭过程以及脱臭条件对玉米油中3-氯丙醇酯和缩水甘油酯生成的影响。结果表明：脱臭过程造成3-氯丙醇酯和缩水甘油酯含量的大幅升高，脱臭温度越高、脱臭时间越长，3-氯丙醇酯和缩水甘油酯的增加量越大，其中脱臭温度比脱臭时间对二者生成的影响更大；在脱臭温度不超过230?℃时，60～120 min的脱臭时间，3-氯丙醇酯含量仅增加了0.047～2.581 mg/kg，缩水甘油酯含量仅增加了0.300～3.883 mg/kg，当脱臭温度达到250?℃时，即使脱臭时间仅为60 min，3-氯丙醇酯和缩水甘油酯含量均显著升高了5.039 mg/kg和8.354 mg/kg，尤其在270?℃、120 min的极限脱臭条件下，3-氯丙醇酯和缩水甘油酯含量更是分别上升至13.004 mg/kg和34.864 mg/kg，达到待脱臭玉米油中其含量的4倍和15倍左右。为防范和控制玉米油脱臭过程3-氯丙醇酯和缩水甘油酯的生成，降低脱臭温度是非常必要的。 |
| 英文摘要: |
| The effects of steam distillation deodorization process and deodorization conditions on the formation of 3-MCPD esters and glycidol esters were studied with corn oil as raw material. The results showed that the contents of 3-MCPD esters and glycidol esters increased significantly during the deodorization process. With the higher deodorization temperature and the longer deodorization time, the amount of 3-MCPD esters and glycidol esters had the larger increase. The deodorization temperature had a greater influence on the formation of the two constituents than the deodorization time. Under the conditions of deodorization temperature not exceeding 230?℃ and deodorization time 60-120 min, the content of 3-MCPD esters merely increased by 0.047-2.581 mg/kg and the glycidol esters content rised barely by 0300-3.883 mg/kg. While when the deodorization temperature was 250?℃, even 60 min was applied for the deodorization, the contents of 3-MCPD esters and glycidol esters significantly increased by 5.039 mg/kg and 8.354 mg/kg, respectively. Especially in the limiting deodorization conditions of 270?℃and 120 min, the contents of 3-MCPD esters and glycidol esters in corn oil were up to 13.004 mg/kg and 34864 mg/kg, nearly 4 times and 15 times of the original level. In order to prevent and control the formation of 3-MCPD esters and glycidol esters during the deodorization process, it was necessary to reduce the deodorization temperature. |
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