| 碱法异构化亚油酸甲酯制备共轭亚油酸 |
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| 引用本文： | 马琳,樊晔,方云.碱法异构化亚油酸甲酯制备共轭亚油酸[J].精细化工,2014,31(5):612-616. |
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| 作者姓名： | 马琳 樊晔 方云 |
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| 作者单位： | 江南大学 食品胶体与生物技术教育部重点实验室 化学与材料工程学院,江南大学 食品胶体与生物技术教育部重点实验室 化学与材料工程学院,江南大学 食品胶体与生物技术教育部重点实验室 化学与材料工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 该文探索在乙二醇溶剂中以氢氧化钠碱法异构化亚油酸甲酯制备共轭亚油酸的方法,适宜的异构化条件为m(氢氧化钠)∶m(亚油酸甲酯)∶m(乙二醇)=1∶5∶8.4,170℃反应4 h,亚油酸甲酯转化率和共轭亚油酸产率分别为92.4%和89.3%。该法比目前常用的亚油酸原料法的优越之处体现在:以氢氧化钠取代常用碱氢氧化钾,降低成本;以亚油酸甲酯取代亚油酸为原料,避免了原料本身大量消耗碱;反应初期避免原料大量皂化,减小了体系的传质阻力,因而减少了溶剂乙二醇消耗量。
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| 关 键 词： | 共轭亚油酸 碱法异构化 亚油酸甲酯 食品与饲料用化学品 |
| 收稿时间： | 2014/1/17 0:00:00 |
| 修稿时间： | 2014/2/18 0:00:00 |
Synthesis of Conjugated Linoleic Acid by Alkali Isomerization of Methyl Linoleate |
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| MA Lin,FAN Ye and FANG Yun.Synthesis of Conjugated Linoleic Acid by Alkali Isomerization of Methyl Linoleate[J].Fine Chemicals,2014,31(5):612-616. |
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| Authors: | MA Lin FAN Ye and FANG Yun |
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| Affiliation: | The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering, Jiangnan University,The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering, Jiangnan University,The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering, Jiangnan University |
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| Abstract: | Alkali isomerization of methyl linoleate by sodium hydroxide in ethylene glycol to prepare conjugated linoleic acid was explored. A conversion of methyl linoleate of 92.4 % and a yield of conjugated linoleic acid of 89.3 % were obtained under the optimum reaction conditions of m(sodium hydroxide): m(methyl linoleate): V(ethylene glycol) = 1: 5: 7.5 at 170 oC for 4 h. The advantages for the new alkali isomerization of methyl linoleate instead of linoleic acid are the low-cost for commonly used potassium hydroxide being replaced by sodium hydroxide, the low consumption of alkali as methyl linoleate instead of the facilely saponified linoleic acid, and the diminished consumption of ethylene glycol since the mass transfer is easy for less saponification initially occurred. |
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| Keywords: | conjugated linoleic acid alkali isomerization methyl linoleate |
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