9results about How to "Many binding sites" patented technology

The invention discloses a bacteriostatic damp-proof aluminum foil composite film for packaging and a preparation method thereof, and belongs to the technical field of packaging materials. And connecting the outer layer with one side of the aluminum foil through an adhesive, connecting the other side of the aluminum foil with the heat sealing layer through an adhesive, and curing to obtain the antibacterial and damp-proof aluminum foil composite film for packaging. The preparation method of the adhesive comprises the following steps: taking a soft-segment main body, a hard-segment main body, a hydrophilic chain extender and a soft-segment modifier for prepolymerization, adding a short-chain chain extender and a long-chain chain extender, continuously stirring, adding a cross-linking agent, continuously stirring, cooling, adding a neutralizer, stirring, adding deionized water, and uniformly stirring and dispersing at a high speed to obtain a modified polyurethane emulsion; and uniformly mixing and dispersing the modified polyurethane emulsion, antibacterial particles, a wetting agent, a defoaming agent and an antioxidant to obtain the adhesive. The antibacterial particle is a coating particle which takes polyvinyl imidazole modified nano zinc oxide as a core and chitosan as a shell; the antibacterial and moisture-proof performance of the aluminum foil packaging film is improved.

The invention belongs to the technical field of glycerol detection devices in fermentation, food analysis, clinical medicine and bioengineering, and relates to a preparation method of a glycerol biosensor. Cuprous oxide is etched through sodium sulfide, a hollow cuprous sulfide nanocube with nanosheets stacked layer by layer on the surface is synthesized, the conductivity and active sites of the material are increased, and rich binding sites are provided for loading glycerol-3-phosphate oxidase and glycerol kinase. The nano material is fixed on a glassy carbon electrode, and glycerol-3-phosphate oxidase and glycerol kinase are dropwise added on the electrode, so that the glycerol biosensor with high performance is obtained. The method has the advantages of simple preparation process and low cost, has higher performance in real sample detection, can be used for large-scale production, and can realize real-time monitoring of glycerol in fermentation liquor.

The invention relates to a water-saving fabric printing and dyeing method which comprises the following steps: a pretreatment stage: soaking a fabric in a solution containing a pretreatment agent, stirring for 30-40 minutes at 40-50 DEG C for desizing treatment, washing the fabric with clear water after the treatment is completed, removing the residual pretreatment agent, and naturally air-drying; a modification stage: putting the pretreated polyester fabric into a first modification liquid, oscillating for 20-30 minutes, drying, putting the fabric treated by the first modification liquid into a second modification liquid, heating for 60-70 minutes at the temperature of 50-70 DEG C, taking out, and naturally air-drying to obtain the modified polyester fabric; in the dyeing stage, the modified fabric is soaked in dye liquor to be dyed; and a washing stage: immersing the dyed fabric in deionized water, stirring or gently scrubbing for 10-20 minutes at room temperature, and then naturally air-drying. The invention discloses a water-saving printing and dyeing method for fabrics, and aims to realize an efficient, water-saving and environment-friendly printing and dyeing process.

The invention belongs to the technical field of crystal porous framework material preparation and adsorption separation, and relates to a fluorine-modified porous framework crystal material, a preparation method thereof and acetylene / carbon dioxide separation application. The fluorine-modified porous frame crystal material is novel in structure and stable in frame, and has two polyhedral cages of a reverse triangular prism and a triangular bipyramid. At the temperature of 77 K, the nitrogen isothermal adsorption curve of the material is I type, the maximum nitrogen adsorption capacity at the pressure P / P0 = 0.995 is 295 cm < 3 > / g, the specific surface area calculated by adsorption data is 991 m < 2 > / g, and the pore size distribution is 4.5-12.0. The permanent pore channel, the proper pore size and the fluorine atom modified pore channel inner surface environment can provide sufficient space and abundant binding sites for selective adsorption gas, so that the material is suitable for adsorption separation of mixed gas.

The invention provides a non-stick pan composite coating and a preparation method thereof.The preparation method comprises the following steps that S1, the inner surface of a non-stick pan base body is subjected to sand blasting roughening treatment through porous ceramic particles, and oil removal and cleaning treatment are conducted; s2, mixing and grinding polytetrafluoroethylene powder and the modified carbon nanotubes to obtain composite powder; s3, activating the composite powder by using a silane coupling agent, putting the activated composite powder into fluorosilicone resin, and mixing to prepare composite resin; and S4, the inner surface of the non-stick pan base body is coated with the composite resin, curing forming is conducted, and the non-stick pan composite coating is obtained. The prepared non-stick pan composite coating has good non-stick performance and excellent wear resistance, and can be firmly combined with a non-stick pan base body.

The invention discloses an efficient fishy smell removing method of abalone pleopod enzymatic soluble collagen, which comprises the following steps: ultrasonically treating the abalone pleopod enzymatic soluble collagen and covalently binding the treated abalone pleopod enzymatic soluble collagen with litchi rind polyphenol extracted by pulse and ultrasonic treatment, so that the binding between polyphenol and protein is remarkably enhanced; according to the present invention, the non-covalent binding of the fishy smell substance and the protein hydrophobic amino acid is weakened so as to easily remove the fishy smell substance and improve the overall flavor, and the litchi rind polyphenol is added, such that the fishy smell can be effectively removed, the flavor quality can be effectively improved, and the benefits of aging delaying, disease prevention and the like can be provided for consumers.

The invention relates to the technical field of organic matter preparation, in particular to a process and system for preparing mixed diamine through catalytic hydrogenation.The process comprises the following steps that a nickel-based catalyst is prepared into a catalyst solution through methyl alcohol, mixed dinitrobenzene, methyl alcohol and the catalyst solution are sequentially added into a hydrogenation reaction kettle, hydrogen is compressed to 1.6-1.8 MPa and then introduced into the hydrogenation reaction kettle, and the mixed dinitrobenzene and the methyl alcohol are added into the hydrogenation reaction kettle; and controlling the reaction temperature and pressure, reacting for 4-8 hours to obtain a reducing solution, separating the reducing solution from the catalyst, dealcoholizing, and purifying to obtain a mixed diamine product. According to the nickel-based catalyst, the selectivity of catalytic hydrogenation reaction can be improved, the catalytic activity of the catalyst is improved, and the catalytic hydrogenation reaction can be carried out at lower temperature and pressure, so that the energy consumption and the cost are reduced.

The invention discloses a method for prolonging the half-life period of abparatide and application of the abparatide in treatment of osteoporosis, and relates to the technical field of medicine preparation, abparatide and activated heparin are subjected to coupling purification to obtain an abparatide conjugate, the abparatide conjugate is further packaged in a lipid film, and the abparatide half-life period of the abparatide conjugate is prolonged. The preparation method comprises the following steps: preparing an abparatide coupling encapsulant solution, and finally loading the abparatide coupling encapsulant solution and nano-particles to obtain the abparatide nano-loading material. According to the invention, the half-life period of abparatide in vivo is obviously prolonged, the treatment effect of abparatide is enhanced, and the frequency of drug use is reduced.

The present invention provides a preparation method and application of a Co‑TBAPy / graphene oxide quantum dot photoelectrochemical biosensor; the method comprises the following steps: S1, preparation of Co‑TBAPy material: S2, preparation of Co‑TBAPy / graphene oxide quantum dot composite material: S3, preparation of Co‑TBAPy / graphene oxide quantum dot photoelectrochemical biosensor; the present invention also relates to the aforementioned Co‑TBAPy / graphene oxide quantum dot photoelectrochemical biosensor for the detection of serotonin or Aβ‑40 amyloid protein. The Co‑TBAPy of the present invention is composited with graphene oxide quantum dots to form an effective carrier transport system, thereby improving the photoelectrochemical performance. At the same time, the MOFs structure of Co‑TBAPy provides an effective anchoring site for DNA aptamers, and finally constructs an efficient and stable Co‑TBAPy / graphene oxide quantum dot photoelectrochemical biosensor. By fixing different DNA aptamer probes, ultra-sensitive and highly specific detection of serotonin and Aβ‑40 amyloid protein can be achieved respectively.