Abstract
Lipases are essential enzymes with unique selectivity, making them valuable in industrial applications. Understanding the integral stereoselectivity of lipases during triacylglycerol (TAG) hydrolysis is crucial for producing high-value products, such as structured lipids. This study developed an analytical method and an interface-based kinetic model to determine integral stereoselectivities on tricapryloylglycerol (TCG), a medium-chain TAG. The analytical method used an HPLC system that simultaneously separated TCG and its hydrolysates with resolution factors of >2.4 and relative standard deviation of retention times <0.3 % within 15 min. The interface-based kinetic model was established to determine the integral stereoselectivities according to the characteristics of the reaction system. The model provided better fitting results for TCG and trioleoylglycerol hydrolysis than a previous model, indicating the successful application in both medium- and long-chain TAGs. This study expanded our understanding of integral stereoselectivity and could facilitate the development of various structured lipid syntheses.
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