食品科学

• 工艺技术 •    下一篇

脂肪酶催化单油酸甘油酯制备功能性1,3-甘油二酯

黄楚楚,熊辉煌,龚 斌,喻 芸,冯 越,梁 媛,朱雪梅   

  1. 南昌大学食品学院,食品科学与技术国家重点实验室,江西 南昌 330047
  • 出版日期:2015-11-25 发布日期:2015-12-03
  • 通讯作者: 朱雪梅
  • 基金资助:

    国家自然科学基金地区科学基金项目(31460427);南昌大学国家级创新创业训练计划项目(201310403012)

Production of Functional 1,3-Diacylglyerol from Monoacylglycerol by Lipase-Catalyzed Transesterification

HUANG Chuchu, XIONG Huihuang, GONG Bin, YU Yun, FENG Yue, LIANG Yuan, ZHU Xuemei   

  1. State Key Laboratory of Food Science and Technology, School of Science and Technology, Nanchang University, Nanchang 330047, China
  • Online:2015-11-25 Published:2015-12-03
  • Contact: ZHU Xuemei

摘要:

研究固定化脂肪酶TLIM催化单油酸甘油酯(glycerol monooleate,GMO)制备1,3-甘油二酯(sn-1,3-diacylglyerol,sn-1,3-DAG)。比较了游离脂肪酸(共轭亚油酸)和脂肪酸乙酯(共轭亚油酸乙酯)两种不同类型酰基供体、反应时间、底物物质的量比对酰基迁移和sn-1,3-DAG的影响。通过对实验结果的判定及分析得到最佳反应条件为采用20%(质量分数)脂肪酶TLIM、底物物质的量比(共轭亚油酸乙酯和GMO)3∶1、在50 ℃的220 r/min水浴摇床中反应2 h,最后得到sn-1,3-DAG转化率为65%。本研究利用GMO而不是常规的甘油或者甘油三酯来制备sn-1,3-DAG,并比较了不同酰基供体对酰基迁移和sn-1,3-DAG转化率的影响,旨在为脂肪酶催化法制备功能性sn-1,3-DAG的研究提供一定参考。

 

关键词: 酰基迁移, 共轭亚油酸, 共轭亚油酸乙酯, 单油酸甘油酯, 脂肪酶TLIM

Abstract:

sn-1,3-Diacylglycerol (sn-1,3-DAG) was synthesized from glycerol monooleate (GMO) by the immobilized
Thermomyces lanuginosus lipase (Lipozyme TLIM)-catalyzed esterification in a solvent-free system. The effects of different
types of acyl donors such as conjugated linoleic acid (CLA-FA) and conjugated linoleic acid ethyl ester (CLA-EE), reaction
time and molar ratio of substrates on acyl migration and glyceride concentration were investigated to improve the yield of
sn-1,3-DAG. of the yield of sn-1,3-DAG was 65% when the reaction proceeded at a TLIM concentration of 20% by mass
with a molar ratio of conjugated linoleic acid ethyl ester (CLAEE):GMO of 3:1 for 2 h at 50 ℃ in a water bath shaker at
220 r/min. Also, the effects of two types of acyl donors (free acid and ethyl ester) on acyl migration and the yield of sn-1,3-
DAG were compared. This study can provide a reference for the industrial production of sn-1,3-DAG.

Key words: transesterification, conjugated linoleic acid, conjugated linoleic acid ethyl ester, glyceryl monooleate, lipase TLIM

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