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| 吸附法脱除大豆油中3-氯丙醇酯及缩水甘油酯的研究 |
| Removal of 3-MCPD esters and glycidyl esters from soybean oil by adsorption |
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| DOI： |
| 中文关键词: 3-氯丙醇酯 缩水甘油酯 吸附脱除 脱除率 大豆油 |
| 英文关键词:3-MCPD esters glycidyl esters adsorption removal removal rate soybean oil |
| 基金项目: |
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| 中文摘要: |
| 以大豆油为原料，研究了吸附剂种类、添加量对大豆油中3-氯丙醇酯的脱除效果和吸附剂种类、吸附剂添加量、吸附温度、吸附时间对大豆油中缩水甘油酯的脱除效果。结果表明：不同吸附剂对大豆油中3-氯丙醇酯的脱除效果依次为H-1号活性炭＞活性白土＞H-2号活性炭＞普通活性炭＞凹凸棒土，所有吸附剂对3-氯丙醇酯的脱除率均较低，脱除效果相对较好的H-1号活性炭的脱除率仅达到34.42%（添加量为油质量0.5%），3-氯丙醇酯含量从1.107 mg/kg下降至0.726 mg/kg；对缩水甘油酯的脱除效果依次为H-1号活性炭＞H-2号活性炭＞普通活性炭＞活性白土＞凹凸棒土，在添加量为2%时，前3种吸附剂对缩水甘油酯的脱除率均达到80%以上，H-1号活性炭的脱除率达到90%以上。在H-1号活性炭添加量3%、吸附时间40 min、吸附温度100?℃的优化条件下，大豆油中缩水甘油酯的脱除率为95.59%，含量从初始的2.810 mg/kg降低至0.124 mg/kg，可以有效脱除大豆油中的缩水甘油酯。 |
| 英文摘要: |
| Using soybean oil as raw material, the impacts of adsorbent type and adsorbent dosage on the removal effect of 3-MCPD esters and the impacts of adsorbent type，adsorbent dosage, adsorption temperature and adsorption time on the removal effect of glycidyl esters from soybean oil were investigated. The results showed that the order of the removal effect of different adsorbents on 3-MCPD esters from high to low was as follows: H-1 activated carbon, activated clay, H-2 activated carbon, common activated carbon and attapulgite. The removal rates of adsorbents on 3-MCPD esters were all low, and the removal rate of 3-MCPD esters by H-1 activated carbon (dosage 0.5% of oil mass)with a relatively better removal effect was merely 34.42%,and the content of 3-MCPD esters reduced from 1.107 mg/kg to 0726 mg/kg.The order of the removal effect of different adsorbents on glycidyl esters from high to low was as follows: H-1 activated carbon, H-2 activated carbon, common activated carbon, activated clay and attapulgite.When the dosage was 2%, the removal rates of the first three adsorbents on glycidyl esters were all above 80%. Furthermore, the removal rate of H-1 activated carbon was more than 90%.The optimal removal conditions were obtained as follows: dosage of H-1 activated carbon 3%, adsorption time 40 min and adsorption temperature 100?℃. Under these conditions, the content of glycidyl esters reduced from the initial 2.810 mg/kg to 0.124 mg/kg, and the removal rate was 95.59%.So glycidyl esters in soybean oil could be effectively removed. |
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