| 程亚鹏，毕艳兰，刘伟，等.尿素包合法制备高纯度油酸乙酯的工艺条件优化[J].中国油脂,2018,43(9):.[CHENG Yapeng, BI Yanlan, LIU Wei,etc.Optimization of preparation of high purity ethyl oleate by urea inclusion method[J].China Oils and Fats,2018,43(9):.] |
| 尿素包合法制备高纯度油酸乙酯的工艺条件优化 |
| Optimization of preparation of high purity ethyl oleate by urea inclusion method |
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| DOI： |
| 中文关键词: 高油酸花生油 尿素包合 油酸乙酯纯度 乙酯收率 |
| 英文关键词:high oleic acid peanut oil urea inclusion purity of ethyl oleate yield of ethyl ester |
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| 摘要点击次数: 1136 |
| 全文下载次数: 398 |
| 中文摘要: |
| 油酸乙酯在化工、医药和食品等行业具有较高的实用价值。为了满足市场对高纯度油酸乙酯的需求，以高油酸花生油为原料，乙酯化后通过尿素包合法制备高纯度油酸乙酯。考察了乙酯与尿素质量比、乙酯与95%乙醇质量体积比、回流温度、回流时间、结晶温度以及结晶时间对包合后油酸乙酯纯度及乙酯收率的影响。通过响应面优化得到尿素包合法制备高纯度油酸乙酯的最佳工艺条件为：乙酯与尿素质量比1∶?1.2，乙酯与95%乙醇质量体积比1∶?5，回流温度50?℃，回流时间30 min，结晶温度22?℃，结晶时间1 h。在最佳工艺条件下油酸乙酯纯度为（90.82±0.04）%，油酸乙酯的相对含量达到（90.82±0.04）%，乙酯收率为（59.2±02）%。该工艺方法对工业化生产高纯度（90%以上）油酸乙酯有一定的参考价值。 |
| 英文摘要: |
| Ethyl oleate has a high practical value in chemical, pharmaceutical and food industries. To meet the market demand for high purity ethyl oleate, the preparation process of high purity ethyl oleate by urea inclusion of fatty acid ethyl esters from high oleic acid peanut oil was researched. The effects of mass ratio of ethyl ester to urea, ratio of ethyl ester to 95% ethanol, reflux temperature, reflux time, crystallization temperature and crystallization time on the purity of ethyl oleate and yield of ethyl ester were studied. The response surface methodology was employed to optimize the purity of ethyl oleate and yield of ethyl ester after inclusion. The optimal preparation conditions were obtained as follows: mass ratio of ethyl ester to urea 1∶?1.2, ratio of ethyl ester to 95% ethanol 1∶?5, reflux temperature 50?℃, reflux time 30 min, crystallization temperature 22?℃, and crystallization time 1 h. Under these conditions, the purity of ethyl oleate was (90.82±004)% and its relative content was (90.82±0.04)%, and the yield of ethyl ester was (59.2±0.2)%. Thus, the process had certain reference value for the industrial production of high purity (90% or more) ethyl oleate. |
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