43results about How to "Has antimicrobial properties" patented technology

The invention provides a bee pollen active probiotic beverage and a preparation method thereof. The bee pollen active probiotic beverage is made of bee pollen as a raw material, mixed with a certain proportion of maltose and / or galactose, mixed and fermented by two kinds of probiotics, Lactobacillus BL1 and Lactobacillus BL2, and then formulated. In view of the fact that the bee pollen raw material is highly acidic and difficult to be utilized by microorganisms, the present invention selects two strains with strong acid resistance and various excellent properties. By controlling the fermentation process, the number of viable probiotic bacteria in the product can be kept at 1011cfu / L within 30 days The above, and can biotransform bee pollen flavonoid glycosides to obtain a large amount of flavonoid aglycone, and improve the bioavailability of bee pollen flavonoids. At the same time, it is rich in other bee pollen and probiotic fermentation products. It is rich in nutrition, rich in fragrance, sweet and sour, and has the functions of beautifying and nourishing the skin, enhancing immunity, lowering cholesterol, regulating intestinal flora and preventing constipation.

An antimicrobial polymer for use in contact lenses includes at least one antimicrobial monomer; and at least one other monomer selected from an acrylic monomer, a hydrophobic acrylic monomer, a hydrophilic acrylic monomer, a vinyl monomer and / or a collagen monomer.

The invention discloses an auxiliary capable of improving printing performance of a composite ivory board and a preparation method thereof. The auxiliary is prepared from, by weight, 10-20 parts of inorganic zinc salt, 10-20 parts of inorganic additive, 0.5-1 part of surfactant, 0.5-1 part of dispersant and 60-80 parts of deionized water. ZnO nano acanthosphere particles after surface modification are adopted as the auxiliary in the process of printing the composite ivory board; the ZnO nano acanthosphere particles have siphon microstructure, and an active agent is adopted for chemical surface modification, so that ink absorptivity of the composite ivory board can be further improved.

The invention discloses a biomedical material and a preparation method thereof. The metal material comprises a matrix composed of titanium-niobium-based alloy and an alloy coating located on the surface of the matrix. The alloy coating is composed of a deposition layer in the thickness ranging from 5 micrometers to 10 micrometers and a diffusion layer with in thickness ranging from 5 micrometers to 8 micrometers, the diffusion layer is located between the deposition layer and the matrix, the diffusion layer is formed by diffusion of Zr-Ag alloy and titanium-niobium-based alloy, the contents ofZr and Ag are reduced in a gradient manner from the surface layer to the bottom layer of the diffusion layer, and the contents of Ti and Nb are increased in a gradient manner. In the diffusion layer,an alloy phase containing the element Zr can be formed due to mutual diffusion of elements, so that the corrosion resistance of the matrix can be remarkably improved; the antibacterial effect of thesurface of the alloy coating is enhanced through the release of silver ions and the synergistic effect of Zr and Ag; due to the potential difference between Zr and Ag, the formed micro-current can also play an antibacterial role, the application range of the biomedical titanium alloy is expanded, the service life of the biomedical titanium alloy is prolonged, and the purpose of long-term service in the human body is achieved.

The invention belongs to the technical field of polymer composite materials, and in particular relates to a polymer film with hierarchical porous structure and its preparation method and application. The film can be used as a surface heat management film of a solar evaporator. The invention provides a polymer membrane, the polymer membrane has a micropore structure and a nanopore structure, the micropores are distributed throughout the polymer membrane, and the walls of the micropores contain nanopores. The polymer film obtained in the present invention has a hierarchical porous structure, and the film can be used as a polymer-based thermal management film. When used in a solar evaporator, it can limit the energy on the surface of the solar evaporator, and reduce heat through thermal radiation and heat convection. Loss.