8 results about "Gum cellulose" patented technology

The application provides a sodium silicate silica gel cellulose membrane and a preparation method and application thereof, and belongs to the technical field of silica gel membranes. In the application, a sodium silicate solution with viscosity is immersed between plant fibers, part of the sodium silicate on the cellulose membrane reacts with carbon dioxide in the air to produce amorphous silicic acid gel, and the silicic acid gel is converted into silicon dioxide through natural dehydration and drying, so that the silica gel powder and the cellulose film are tightly connected together. The preparation method provided by the application is simple in operation and low in cost, can be used for production and application in ordinary laboratories with insufficient funds, the sodium silicate silica gel cellulose membrane prepared by the method has the characteristics of adsorbing nucleic acids, can replace silica gel membranes on the market to prepare relatively pure nucleic acid samples, and has a shorter operation time and a higher extraction efficiency than that of using only silicon dioxide particles, silica gel particles and calcium carbonate powder to adsorb nucleic acids in a nucleic acid extraction solution.

The invention provides a mousse product and a preparation method thereof.The mousse product is prepared from, by mass, 6%-93% of dairy products, 5%-20% of edible sugar, 0.2%-0.5% of emulsifying agents, 1.5%-2.5% of compound thickening stabilizers, 0.3%-1% of essence and water, and the mousse product has the smooth and dense taste; gelatin in a traditional mousse product is replaced with a compound thickening stabilizer, the compound thickening stabilizer comprises modified starch and colloid, and the colloid adopts at least one of accessory vegetable gum, seaweed gel, cellulose gum and microbial fermentation gel and can serve as a supporting body of the mousse product. The mousse product can be shaped at normal temperature and stored for a long time, does not need refrigeration equipment in industrial production and transportation processes, and is convenient to transport and sell.

The application discloses a super-strong bonding water-based adhesive and a preparation method thereof, and relates to the technical field of adhesives. In a dispersion system of aluminum gel, cellulose nanocrystals and surface-carboxylated amorphous calcium carbonate, chemical bonding and uniform dispersion of nano-filler and a polymer matrix are realized through in-situ polymerization of polyurethane monomers, so that excellent bonding strength and water resistance are realized. Aluminum ions and carboxymethyl cellulose sodium form an ionic gel structure, the mechanical embedding of the adhesive and the base material is enhanced, amorphous calcium carbonate is wrapped with acrylic acid polymerization, so that the nanoparticles are stabilized, calcium carbonate is diffused into the polyurethane matrix to realize the organic-inorganic hybrid reinforcing structure of the adhesive, and the polyurethane monomers are in-situ polymerized in the presence of nano-filler, so that the crystal form of calcium carbonate and the mechanical properties of the adhesive are stabilized, and the overall structural integrity of the matrix is enhanced.

The present invention discloses a method for packaging cut meat for freshness preservation. The packaging method for cut meat for freshness preservation according to the present invention is a packaging method for cut meat for freshness preservation, comprising: (a) cold A step of forming a coating film having a thickness of 0.01 to 0.2 mm by applying a natural polymer compound, composed of one or more of agar, gelatin, cellulose, starch, and protein, to the surface of the cut meat; (b) the above It consists of a packaging step for packaging cut meat with a coating film formed thereon. The packaging method for cutting meat for freshness preservation according to the present invention, configured as described above, applies agar to the surface of the cut meat, Form a coating film by applying natural polymer compounds such as gelatin, alginic acid, starch, other polysaccharides, starch, and cellulose. It lowers the production of basic nitrogen by blocking the cell membranes on the surface of the meat from the outside through simple process improvements, and at the same time, microorganisms It has the advantage of being able to suppress spoilage caused by water proliferation. In addition, natural polymer compounds can maintain freshness and suppress browning by blocking the cell membranes on the surface of the meat. Since this can guarantee excellent appearance and taste for meat products that prioritize sensory elements, it enhances marketability. Useful effects are expected. In addition, since it can be distributed and displayed in a state highly preferred by consumers, consumer satisfaction with the product can be further enhanced. It has an effect.

This invention discloses a recyclable, environmentally dry gelatin / cellulose-based thermal insulation cooler, its green preparation method, and its application. The green preparation method of the recyclable, environmentally dry gelatin / cellulose-based thermal insulation cooler is as follows: dissolving gelatin in water to obtain a gelatin solution; mixing the gelatin solution with a cellulose dispersion to obtain a gelatin / cellulose mixture; adding functional fillers to the gelatin / cellulose mixture and dispersing them evenly to obtain a foam precursor solution; adding sodium dodecyl sulfate to the foam precursor solution and then stirring it at high speed to obtain wet foam; gelling the wet foam to obtain a wet foam gel; and naturally drying the wet foam gel to obtain the gelatin / cellulose-based thermal insulation cooler. The thermal insulation cooler prepared by this invention has advantages such as low density, high porosity, uniformly distributed small pore size, high solar reflectivity and infrared emissivity, and low thermal conductivity. Furthermore, it can be recycled and reused, and the entire process is environmentally friendly, non-toxic, and does not require drying equipment.

An oil-in-water emulsion composition comprising: (A) alkoxysalicylic acid or a salt thereof represented by general formula (1); (B) at least one selected from the group consisting of polyoxyethylene dialkyl esters and polyoxyethylene dialkyl ethers represented by general formula (2); (C) at least one selected from the group consisting of polyoxyethylene alkyl esters and polyoxyethylene alkyl ethers represented by general formula (3); (D) agar; and (E) (i) carbomer and an alkali agent; (ii) sodium carbomer; or (iii) at least one selected from the group consisting of succinosaccharide, xanthan gum, cellulose gum, (acrylate / 2-(perfluorohexyl)ethyl acrylate) crosspolymer, and (acrylate / laurate methacrylate / isodecyl methacrylate) crosspolymer, and carbomer, wherein the content of (A) alkoxysalicylic acid or a salt thereof represented by general formula (1) is more than 1% by mass.

The present application belongs to the technical field of vegetable storage and preservation, and particularly relates to a fresh vegetable storage and preservation method. The fresh vegetable is coated with pepper leaf essential oil and then packaged; the packaged vegetable is stored in a low-pressure electrostatic field and a low-temperature environment. The present application uses the pepper leaf essential oil coating, combined with the low-temperature and low-pressure electrostatic field preservation technologies, which have a synergistic effect, can obviously inhibit the pectin and cellulose degradation enzyme activity, reduce the metabolic decomposition of the cell wall structure components such as pectin and cellulose, reduce the loss of the nutritional components and water of the vegetable, maintain the texture characteristics of the vegetable, delay the oxidative decomposition of the chlorophyll components, thereby maintaining the original color quality of the vegetable, delaying the yellowing of the vegetable, inhibiting the postharvest physiological metabolism of the vegetable, delaying the consumption of the soluble solids of the vegetable, inhibiting the membrane lipid peroxidation, reducing the accumulation of malondialdehyde, and prolonging the shelf life of the fresh vegetable.

The invention provides a biological foam oil displacement system for medium and low permeability oil reservoirs and a screening method and application, and relates to the technical field of microbial oil recovery, the method comprises the following steps: oil reservoir screening, biological foam oil displacement system construction, and injection mode selection; a foaming agent of the biological foam oil displacement system comprises one or more of fermentation broth such as double rhamnose monolipid, double rhamnose dilipid, single rhamnose monolipid, single rhamnose dilipid, surfactin, scabamarin, iturin, deysin, serratia marcescens, mucilatin, trehalose lipid, lactone type sophorolipid, acid type sophorolipid and the like, and a bio-based oil displacement agent, and the foaming agent is prepared from one or more of fermentation broth such as double rhamnose monolipid, double rhamnose dilipid, single rhamnose monolipid, single rhamnose dilipid, surfactin, scabamarin, iturin, deysin, serratia marcescens, mucilatin, trehalose lipid, lactone type sophorolipid and acid type sophorolipid. The foam stabilizer comprises one or more of xanthan gum, welan gum, Wollan gum, Dide gum, gellan gum, rhamnose gum, diidine gum, cellulose, biosynthetic nanoparticles and fly ash. The method has the beneficial effects that aiming at the problems of high heterogeneity and the like of medium and low permeability reservoirs, the characteristics of the biological surfactant are utilized, and a pure biological foam combination flooding system is constructed.