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| Refining of palm oil diacylglycerol by molecular distillation |
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| DOI： |
| KeyWord:molecular distillation diacylglycerol palm oil refining purity |
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| Abstract: |
| 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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