“…To expand the application of GS-like phytosterols, their solubility, dispersibility, and bioavailability need to be increased by chemical or physical modifications. 124 The structural modifications of phytosterols are performed in the following aspects: (i) chemical modification by esterification and transesterification with hydrophobic fatty acids and triacylglycerols to improve their oil solubility, (ii) chemical manipulation by coupling with various hydrophilic moieties to enhance their water solubility. These can be done by chemical, 125 enzyme-catalyzed, 126 or ionic liquid-catalyzed 127 synthesis.…”