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Lookup NU author(s): Dr Kheng-Lim GohORCiD
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© 2024Diacylglycerol (DAG) is a functional lipid that is naturally present in vegetable oils in limited concentrations (1 %–5 %). This study proposed an enzymatic method to afford high-content-DAG vegetable oils via a reaction catalyzed by an immobilized lipase, PS@OMS-C8, using high-speed homogenization and molecular distillation. Results indicated that 48.6 % DAG was initially obtained through the enzymatic glycerolysis of rapeseed oil with glycerol, of which 90.2 % was sn-1,3-DAG. PS@OMS-C8 maintained 35.5 % DAG content after 10 reuse cycles, confirming its catalytic stability; this was attributed to lipase immobilization on the ordered mesoporous silica that significantly improve the secondary protein structures, including α-helix and β-sheet, thereby strengthening the rigidity of PS@OMS-C8. In addition to producing DAG-enriched rapeseed oil, other edible oils with 39.4 %–50.2 % DAG content were obtained, as revealed via molecular docking simulation. This study offers new strategies for the sustainable synthesis of vegetable oils with a high content of functional lipids high-content functional lipids.
Author(s): Liu R, Zhang Y, Xu Y, Liu Z, Chen J, Goh K-L, Zhang Y, Zheng M
Publication type: Article
Publication status: Published
Journal: Food Chemistry
Year: 2025
Volume: 474
Print publication date: 15/05/2025
Online publication date: 06/02/2025
Acceptance date: 04/02/2025
ISSN (print): 0308-8146
ISSN (electronic): 1873-7072
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.foodchem.2025.143236
DOI: 10.1016/j.foodchem.2025.143236
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