| abstract |
The invention belongs to the technical field of antioxidant materials, and in particular relates to a preparation method, product and use of dendrobium extract-nanocellulose composite hydrogel. The preparation method comprises: taking fresh whole herb of dendrobium, washing it, drying it, cutting it from the junction of the rhizome, saving the root and the stem and leaf respectively; taking the stem and leaf, and adopting 80% ethanol extraction and water extraction to prepare the dendrobium The stem and leaf extract; the root is taken, and the root extract is prepared by water extraction; the dendrobium enzymatic fermentation product is prepared by using cellulase and lactic acid bacteria. Using cerium ammonium nitrate as an initiator, polyethylene glycol methacrylate is grafted onto the surface of nanocellulose crystals, and then combined with α-cyclodextrin, stem and leaf extracts of Dendrobium, root extracts of Dendrobium, and enzymatic fermentation products of Dendrobium , Glycerin complexation to form a supramolecular hydrogel with antioxidant properties, the whole plant of Dendrobium can be fully utilized and resources can be saved. |