食品科学 ›› 2011, Vol. 32 ›› Issue (24): 69-72.doi: 10.7506/spkx1002-6630-201124015

• 工艺技术 • 上一篇    下一篇

微生物油脂中花生四烯酸的甲酯化工艺

董宏祯1,许晨2,许建中2,*,汤培平1,王伟毅2   

  1. 1.厦门大学化学化工学院化学工程与生物工程系 2.国家海洋局第三海洋研究所
  • 出版日期:2011-12-25 发布日期:2011-12-29
  • 基金资助:
    厦门海洋研究开发院共建项目;福建省海洋与渔业厅科技重点项目([2009]2-10); 厦门市科技计划项目(3502Z20112005);福建省2010 年第二批产业技术开发项目(5012060403)

Methyl Esterification of Arachidonic Acid in Microbial Oil

DONG Hong-zhen1,XU Chen2,XU Jian-zhong2,*,TANG Pei-ping1,WANG Wei-yi2   

  1. (1. Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;2. Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China)
  • Online:2011-12-25 Published:2011-12-29

摘要: 以微生物油脂为原料,对其中花生四烯酸的甲酯化方法进行筛选和优化。在确定合适的花生四烯酸甲酯化方法基础上,考察酯化温度、酯化时间、催化剂体积分数及搅拌转速对花生四烯酸酯化效果的影响。结果表明:酯化温度80℃、酯化时间8h、浓硫酸体积分数2.0%、转速400r/min时,花生四烯酸甲酯质量分数达到37.75%,产率达到91.54%。甲酯化后的花生四烯酸沸点较低,适用于分子蒸馏。

关键词: 微生物油脂, 花生四烯酸, 甲酯化

Abstract: In order to maximize arachidonic acid methyl ester production, the methyl esterification of microbial oil was optimized with respect to temperature, reaction time, catalyst (concentrated sulfuric acid) dosage and agitation speed using one-factor-a-at-a-time combined with orthogonal array design method. The highest yield of 91.54% was achieved after 8 h of reaction at 80 ℃ and an agitation speed of 400 r/min under the catalysis of 2.0% concentrated sulfuric acid. The obtained product contained 37.75% arachidonic acid methyl ester and its boiling point was lower than before the reaction, facilitating molecular distillation.

Key words: microbial oil, arachidonic acid, methyl esterification

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