植物甾醇脂肪酸酯的胶束催化合成研究

Synthesis of Phytosterol Fatty Acid Esters Using Micelle-Catalyst

DOI：

中文关键词: 植物甾醇酯 脂肪酸 十二烷基硫酸铜 胶束催化 酯化反应

英文关键词: phytosterol fatty acid cupric dodecyl sulfate micelle-catalysis esterification

基金项目:国家自然科学基金项目(31071600);江苏省自然科学基金项目(BK2011155)

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中文摘要:

植物甾醇脂肪酸酯可以通过脂肪酸和植甾醇在酸和碱的催化下直接酯化合成。为提高酯化率,采用胶束催化剂合成脂肪酸植物甾醇酯,研究了反应条件对反应的影响。研究表明,胶束催化剂十二烷基硫酸铜为合成植物甾醇脂肪酸酯的良好高效催化剂,并可回收利用。在酸醇摩尔比1.2∶1,十二烷基硫酸铜用量为植物甾醇摩尔百分比为1%,反应温度110℃,无溶剂反应4h的最佳条件下,植物甾醇的酯化率为80.7%～86.4%。

英文摘要:

Phytosterol fatty acid esters can be synthesized by direct esterification of fatty acid with phytosterol in the presence of acidic/basic catalysts.Micelle-catalysts were used in the esterification reaction for preparation of phytosterol esters in good yields.The experimental results showed that cupric dodecyl sulfate exhibit excellent activity in this reaction,which can be recovered after the reactions and reused.The optimum reaction conditions were determined and listed as follows: molar ratio of fatty acid to phytosterols 1.2∶1and the amount of catalyst 1.0 mol % at 110 ℃ for 4 h.With this optimum coditions,the esterification rate of phytosterol esters reached at 80.7~86.4 %.

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