Abstract:

An antioxidant dry mask dissolved in water was prepared, combining the good film-forming property of polysaccharides with the ability to combine with water to provide a good moisturizing effect for the skin. By configuring different ratios of dendrobium polysaccharide/purulan polysaccharide composite solution, dendrobium polysaccharide/purulan polysaccharide was prepared by electrostatic spinning technology, and uniform and continuous nanofibers were obtained with a fiber diameter of less than 200 nm, which can be dissolved quickly within 20 s and has good hydrophilicity and tensile strength. Infrared spectroscopy indicates the formation of intermolecular hydrogen bonds between dendrobium polysaccharides and pullulan polysaccharides. When the concentrations of 1.2% dendrobium polysaccharide and 12% purulan polysaccharide are combined, the synergistic effect of the two in scavenging the DPPH radicals and the ABTS radicals are the strongest, and the aqueous solution can scavenge 60% of the DPPH radicals and 85% of the ABTS radicals after dissolution, with good antioxidant capacity. As the whole nanofiber membrane is composed of polysaccharides, it has a certain water retention capacity and can reduce water dissipation in the environment. The toxicological safety is assessed by cytolytic hemolysis experiment, which demonstrates that the nanofibers are non-irritating, mild activity, and low immunogenicity, ensuring high compatibility with human skin, and having the potential to be applied in facial treatments.

Key words: dendrobium polysaccharides, pullulan polysaccharide, compounding, moisturizing, facial masks