关键词: 脂肪酶；酯交换；结构脂质；位置选择性；反应介质；物理辅助

Abstract:

Fatty acids (FAs) composition, length of the carbochain and number of the double bonds in the triacylglycerols (TAGs) are key factors affecting oil and fats physicochemical proprieties and nutritional values. The location distribution of FAs in the glycerol affects the physiological functions and nutritional values of structured lipids (SLs). With the development of the functional lipids, studies on SLs received more concern. This paper summarized the influencing factors on FAs acylate position selectivity of SLs enzymatic synthesis, and laid emphasis on evaluating the catalytic specificity of lipase, reaction media and different physical assisted conditions. Meanwhile, the paper introduced the analytical and detection methods for FAs acylate position on TAG and forecasted the development prospect of SLs enzymatic synthesis on above basis.

Key words: lipase, transesterification, structured lipid, positional selectivity, reaction medium, physical assisted