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| 分子蒸馏精制棕榈油甘油二酯工艺研究 |
| Refining of palm oil diacylglycerol by molecular distillation |
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| DOI： |
| 中文关键词: 分子蒸馏 甘油二酯 棕榈油 精制 纯度 |
| 英文关键词:molecular distillation diacylglycerol palm oil refining purity |
| 基金项目: |
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| 中文摘要: |
| 利用分子蒸馏小试装置研究了分离较高纯度棕榈油甘油二酯的生产工艺。利用Novozym 435脂肪酶在无溶剂体系下甘油解棕榈油，制备甘油二酯含量大于50%的酰基甘油混合物，采用两级分子蒸馏进行精制，并研究了二级分子蒸馏温度、刮膜转速、进料速率对甘油二酯纯度的影响。结果表明：在二级分子蒸馏真空度0.1 Pa、蒸馏温度230?℃、刮膜转速300 r/min、进料速率4 mL/min的条件下，得到了纯度达到80%左右、得率达到50%左右的棕榈油甘油二酯产品。 |
| 英文摘要: |
| The production process of high purity palm oil diacylglycerol was studied by molecular distillation. Novozym 435 was used in the glycerolysis of palm oil in solventl free system to produce acylglycerol mixture with diacylglycerol content higher than 50%. The acylglycerol mixture was refined by two-step molecular distillation, and the effects of secondary molecular distillation temperature, rotation speed and feed speed on the purity of diacylglycerol were studied.The results showed that the purity of diacylglycerol in the product reached about 80%,and the yield reached about 50% under the conditions of secondary molecular distillation vacuum degree 0.1 Pa, distillation temperature 230?℃, rotation speed 300 r/min and feed speed 4 mL/min. |
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