A scalable and eco-friendly carbohydrate-based oleogelator for vitamin E controlled delivery
Résumé
Supramolecular oleogels, in which low‐molecular weight oleogelators self‐assemble into various nanostructures through non‐covalent interactions, have witnessed increasing research activity in various fields of science, including food, cosmetic or remediation of marine oil spills. Herein, we report a simple scalable and environmentally friendly carbohydrate-based oleogelator, namely, sodium salt of N,N’-dimethyl β-C glucosyl barbiturate (GlcBMe) that self-assembles through sonication to induce the gelation of polar organic solvent and later of non-polar vegetable oils by cationic exchange with quaternary ammonium surfactants. Water-soluble GlcBMe was capable of forming self-assembled fibrillar network bridging insoluble particles in the oil by sonication in the presence of a small amount of water. The rheological properties are reinforced by in situ particle bridging with quaternary ammonium surfactants as evidenced by multi-scale structural analyses. IR analysis indicated that -OH (from carbohydrates) and -C=O (from barbituric ring) were involved in hydrogen bonding promoting the formation of a fibrous network. The oleogel presented a non-Newtonian system showing a shear-thinning behavior and thixotropic properties. Advantageously, these oleogels showed an excellent control and slow release of the loaded-Vitamin E in a pH-dependent manner.
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