Structure–Property Correlation of Diacylglycerol‐Modified Lipid Bases: Crystallization and Dispersion Behaviors

ABSTRACT This study investigated the physicochemical modifications of fully hydrogenated palm kernel oil stearin (FHPKS) by incorporating the enzymatically synthesized lauric and myristic acid–based diacylglycerols (DAGs) to enhance its thermal behavior and dispersion properties. The lipid bases were prepared by blending DAGs with FHPKS at different concentrations. The physicochemical properties were characterized via fatty acid and lipid species analyzes, solid fat content, morphology/polymorphism, crystallization kinetics, and disintegration/dissolution times. Results suggested that DAGs were compatible with the FHPKS at 0°C–20°C when added below 40%, while higher DAG concentrations tended to induce eutectic behavior. DAG at 5%–10% significantly promoted β′ crystal formation with fine morphology, reducing dissolution time (from 20.21 ± 0.12 to 16.20 ± 0.30 min) and improving the uniformity and stability of the lipid matrices. Multivariate predictive models were constructed to correlate physicochemical parameters with melting and dispersion properties. These findings offer valuable insights for the functional design of lipid–based systems.