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| 母乳脂替代品的分子蒸馏脱酸工艺研究 |
| Molecular distillation deacidification of human milk fat substitutes |
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| DOI： |
| 中文关键词: 母乳脂替代品 分子蒸馏 脱酸 |
| 英文关键词:human milk fat substitutes molecular distillation deacidification |
| 基金项目: |
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| 中文摘要: |
| 采用分子蒸馏技术对由脂肪酶Lipozyme RM IM催化猪板油和油茶籽油脂肪酸甲酯制备的母乳脂替代品（HMFS）粗产物进行了脱酸工艺研究。在单因素试验的基础上，通过Box-Behnken响应面试验对工艺条件进行优化。结果表明，最优工艺条件为温度209?℃、刮膜转速180 r/min、进料速度2 mL/min，在此条件下，重相分离所得HMFS酸值（KOH）为0.036 mg/g，得率可达49.19%。HMFS的主要融熔峰在4.68?℃，HMFS甘油三酯脂肪酸组成中的C16∶?0有69.98%分布在Sn-2位上。 |
| 英文摘要: |
| The deacidification of the crude products of human milk fat substitutes(HMFS) which were prepared by lard and oil-tea camellia seed oil fatty acid methyl esters catalyzed by Lipozyme RM IM was carried out by molecular distillation. Based on the single factor experiment, the Box-Behnken response surface experiment was used to optimize the process conditions. The optimal operation conditions were obtained as follows: temperature 209?℃,rotation speed 180 r/min and feed speed 2 mL/min. Under these conditions, the acid value of the heavy phase was 0.036 mgKOH/g, and the yield of HMFS was 4919%. The main melting peak of HMFS was 4.68?℃. The relative content of C16∶?0 at Sn-2 position of HMFS reached 69.98%. |
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