Controlled volatile release from fi-sitosterol-based oleogels based on different self-assembly mechanisms

摘要

This study examined how the self-assembly mechanisms of fi-sitosterol-based oleogels influenced the release of volatile compounds. Microscopy, X-ray diffraction (XRD) and small-angle X-ray scattering (SAXS) measurements showed that the three fi-sitosterol-based oleogels (fi-sitosterol + y-oryzanol oleogels (SO), fi-sitosterol + lecithin oleogels (SL) and fi-sitosterol + monostearate oleogels (SM)) had significant differences in their microstructures, which were formed via different self-assembly mechanisms. SO exhibited the highest oil binding capacity (OBC), complex modulus (G*) and apparent viscosity. Dynamic and static headspace analyses suggested that network structure of fi-sitosterol-based oleogels affected the release of volatile components. SO showed the strongest retention effect, followed by SL and SM. The release of volatile compounds mainly related to structural strength and compositions of oleogels. These results indicated that fi-sitosterol-based oleogels formed with different selfassembly mechanisms have the potential to serve as effective delivery systems for controlling the release of volatile compounds.

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