| 于涵,郑晓宇,陈海玲，等.棉籽油脂肪酸甲酯的提纯及组成分析[J].中国油脂,2014,39(12):.[YU Han,ZHENG Xiaoyu,CHEN Hailing，etc.Purification and composition of cottonseed oil fatty acid methyl ester[J].China Oils and Fats,2014,39(12):.] |
| 棉籽油脂肪酸甲酯的提纯及组成分析 |
| Purification and composition of cottonseed oil fatty acid methyl ester |
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| DOI： |
| 中文关键词: 棉籽油脂肪酸甲酯 酯交换 提纯 减压蒸馏 组成分析 |
| 英文关键词:cottonseed oil fatty acid methyl ester transesterification purification reduced pressure distillation composition analysis |
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| 摘要点击次数: 1288 |
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| 中文摘要: |
| 以新疆石河子地区新陆早36号棉籽油为原料，通过酯交换反应制得棉籽油脂肪酸甲酯，采用萃取、洗涤、旋转蒸发、减压蒸馏对产物进行提纯，研究了萃取、洗涤过程中不同处理方法对产物回收率的影响，并采用气相色谱分析了减压蒸馏后的棉籽油脂肪酸甲酯的组成。结果表明：用等体积的Ⅱ类石油醚萃取，再用等体积的质量分数为10%的硫酸溶液洗涤，最后用等体积60℃热水反复洗涤，直至下层水相pH为7，减压蒸馏棉籽油脂肪酸甲酯回收率达到97.1%，产率达到94.7%；棉籽油脂肪酸甲酯中豆蔻酸甲酯含量为0.93%，棕榈酸甲酯含量为25.48%，9-十六烯酸甲酯含量为0.62%，硬脂酸甲酯含量为1.76%，油酸甲酯含量为15.97%，亚油酸甲酯含量为55.24%。 |
| 英文摘要: |
| Using Xinluzao No.36 cottonseed oil as raw material, the fatty acid methyl ester(FAME) was synthesized by transesterification.Then FAME was purified by extraction, washing,concentration and reduced pressure distillation. The effect of different treatment method in the process of extraction and washing on the recovery rate of the FAME was studied and the composition of cottonseed oil FAME was analyzed by gas chromatography. The results showed that after being extracted by the same volume of petroleum ether of type II,the cottonseed oil FAME was washed by the same volume of 10% sulfuric acid solution, then repeatedly washed by the same volume of 60℃ water until the pH of the water phase was 7, the recovery rate and yield of cottonseed oil FAME after reduced pressure distillation reached 97.1% and 94.7%,respectively.The cottonseed oil FAME was composed of 0.93% myristic acid methyl ester,25.48% methyl palmitate, 0.62% 9-methyl palmitoleate,1.76% methyl stearate,15.97% methyl oleate and 55.24% methyl linoleate. |
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