The invention provides a silk fibroin-based anti-counterfeiting mark comprising a silk fibroin film layer and a gold film layer located on the silk fibroin film layer, and the area of the gold film layer is less than that of the silk fibroin film layer. The inventive also provides a method for preparing the silk fibroin-based optical anti-counterfeiting mark, the method comprises preparing an aqueous silk fibroin solution, coating the aqueous silk fibroin solution onto a substrate to obtain a silk fibroin film, and sputtering a layer of gold film on the silk fibroin film with a mask to obtain the silk fibroin-based optical anti-counterfeiting mark. In the invention a thin layer of Au film is sputtered on a silk fibroin film such that an anti-counterfeiting mark pattern appears at a high humidity, the method is simple and can significantly the production cost of optical anti-counterfeiting mark.

The invention provides a silk fibroin-based anti-counterfeiting mark comprising a silk fibroin film layer and a gold film layer located on the silk fibroin film layer, and the area of the gold film layer is less than that of the silk fibroin film layer. The inventive also provides a method for preparing the silk fibroin-based optical anti-counterfeiting mark, the method comprises preparing an aqueous silk fibroin solution, coating the aqueous silk fibroin solution onto a substrate to obtain a silk fibroin film, and sputtering a layer of gold film on the silk fibroin film with a mask to obtain the silk fibroin-based optical anti-counterfeiting mark. In the invention a thin layer of Au film is sputtered on a silk fibroin film such that an anti-counterfeiting mark pattern appears at a high humidity, the method is simple and can significantly the production cost of optical anti-counterfeiting mark.

Tissue repair and restoration can be performed using an elastic material formed from tropoelastin. The elastic material can be formed by providing a solution of tropoelastin monomers, applying the solution to a surface, and heating the solution on the surface in absence of a cross-linking agent to enable the tropoelastin monomers to bind to each other to form an elastic material that does not dissociate into tropoelastin monomers when the elastic material is contacted with an aqueous solution.

Tissue repair and restoration can be performed using an elastic material formed from tropoelastin. The elastic material can be formed by providing a solution of tropoelastin monomers, applying the solution to a surface, and heating the solution on the surface in absence of a cross-linking agent to enable the tropoelastin monomers to bind to each other to form an elastic material that does not dissociate into tropoelastin monomers when the elastic material is contacted with an aqueous solution.

Compositions for inhibiting the attachment of microbes to surfaces are disclosed. The compositions include a carrier and an effective amount of an anti-adherent agent. The anti-adherent agents include Hydroxypropyl methylcellulose; Methylcellulose, Hydroxypropylcellulose, Hydroxyethylcellulose, Dimethicone PEG-7 Phosphate, Propylene Glycol Alginate, Bis-PEG-15 Dimethicone/IPDI Copolymer, Polyimide-1, Polyquaternium-101, Polyester-5, Hydrolyzed Wheat Protein/PVP Crosspolymer, Polymethacrylamidopropyl Trimonium Chloride, Ethylene Oxide/Propylene Oxide Block Copolymer, Trideceth-9 PG-Amodimethicone (and) Trideceth-12, PEG-12 Dimethicone, Cyclopentasiloxane (and) Caprylyl Dimethicone Ethoxy Glucoside, Dimethicone PEG-8 succinate, Linoleamidopropyl PG-Dimonium Chloride Phosphate Dimethicone, Polyvinyl Pyrrolidone; Gum; Polyacrylate Crosspolymer-11; PEG-8 SMDI Copolymer; Polyvinyl Alcohol; VP/Dimethylaminoethylmethacrylate/Polycarbamyl Polyglycol Ester; VP/Polycarbamyl Polyglycol Ester; VP/Dimethiconylacrylate/polycarbamyl Polyglycol Ester; Acrylates/Steareth-20 Methacrylate Copolymer; a mixture of Acrylates Copolymer and VP/Polycarbamyl Polyglycol Ester; and any combination thereof. Various delivery vehicles, such as wipes, may be used to deliver the composition to surfaces.

Compositions for inhibiting the attachment of microbes to surfaces are disclosed. The compositions include a carrier and an effective amount of an anti-adherent agent. The anti-adherent agents include Hydroxypropyl methylcellulose; Methylcellulose, Hydroxypropylcellulose, Hydroxyethylcellulose, Dimethicone PEG-7 Phosphate, Propylene Glycol Alginate, Bis-PEG-15 Dimethicone/IPDI Copolymer, Polyimide-1, Polyquaternium-101, Polyester-5, Hydrolyzed Wheat Protein/PVP Crosspolymer, Polymethacrylamidopropyl Trimonium Chloride, Ethylene Oxide/Propylene Oxide Block Copolymer, Trideceth-9 PG-Amodimethicone (and) Trideceth-12, PEG-12 Dimethicone, Cyclopentasiloxane (and) Caprylyl Dimethicone Ethoxy Glucoside, Dimethicone PEG-8 succinate, Linoleamidopropyl PG-Dimonium Chloride Phosphate Dimethicone, Polyvinyl Pyrrolidone; Gum; Polyacrylate Crosspolymer-11; PEG-8 SMDI Copolymer; Polyvinyl Alcohol; VP/Dimethylaminoethylmethacrylate/Polycarbamyl Polyglycol Ester; VP/Polycarbamyl Polyglycol Ester; VP/Dimethiconylacrylate/polycarbamyl Polyglycol Ester; Acrylates/Steareth-20 Methacrylate Copolymer; a mixture of Acrylates Copolymer and VP/Polycarbamyl Polyglycol Ester; and any combination thereof. Various delivery vehicles, such as wipes, may be used to deliver the composition to surfaces.

The application is directed to aqueous dispersible biodegradable compositions of esters which are the condensation reaction product of a polyol and a diacid which are within a matrix of hydrated polypeptide. The compositions are useful in additive manufacturing and other applications for use with implantable articles. In some embodiments, the ester in the compositions is the product of a glyercol-sebacic acid condensation reaction.

The application is directed to aqueous dispersible biodegradable compositions of esters which are the condensation reaction product of a polyol and a diacid which are within a matrix of hydrated polypeptide. The compositions are useful in additive manufacturing and other applications for use with implantable articles. In some embodiments, the ester in the compositions is the product of a glyercol-sebacic acid condensation reaction.

This invention relates to road deicing, and particularly discloses an aqueous emulsion of biological antifreeze protein for road anti-icing and deicing and a method of preparing the same. The emulsion is prepared from 3.2-12.8% by weight of a biological antifreeze protein; 45-75% by weight of water; 0.2-0.8% by weight of a cationic emulsifier; 1-4% by weight of nitrile latex; and 8-22% by weight of phosphate-buffered saline. The aqueous emulsion prepared herein involves cheap raw materials, simple production processes, good deicing performance, displaying a complete freezing inhibition at 2 C. to 0 C. and a freezing probability of 15% or less at 4 C. to 2 C. The aqueous emulsion can also effectively reduce ice crystal size, having a brilliant application prospect in road anti-icing and deicing in winter.

This invention relates to road deicing, and particularly discloses an aqueous emulsion of biological antifreeze protein for road anti-icing and deicing and a method of preparing the same. The emulsion is prepared from 3.2-12.8% by weight of a biological antifreeze protein; 45-75% by weight of water; 0.2-0.8% by weight of a cationic emulsifier; 1-4% by weight of nitrile latex; and 8-22% by weight of phosphate-buffered saline. The aqueous emulsion prepared herein involves cheap raw materials, simple production processes, good deicing performance, displaying a complete freezing inhibition at 2 C. to 0 C. and a freezing probability of 15% or less at 4 C. to 2 C. The aqueous emulsion can also effectively reduce ice crystal size, having a brilliant application prospect in road anti-icing and deicing in winter.