535 results about "Guar gum" patented technology

The invention relates to the technical field of daily chemicals, and provides shampoo and a preparation method and application thereof.The shampoo is prepared from, by mass, 3%-15% of a sulfate-free anionic surfactant, 8%-20% of an ampholytic surfactant, 0-5% of a nonionic surfactant, 0.3%-1% of a hair cationic conditioner and 0.1%-3% of emulsified silicone oil based on the total mass of the shampoo; the cationic conditioner for hair comprises a polyquaternium cationic polymer and cationic guar gum, and the mass ratio of the polyquaternium cationic polymer to the cationic guar gum is (1: 2)-(2: 1). According to the application, the polyquaternium cationic polymer and the cationic guar gum are selected as the cationic conditioner for hair, and the sulfate-free anionic surfactant and the emulsified silicone oil are matched, so that mild cleaning of scalp can be realized, water-oil balance of the scalp can be maintained, damage to hair scales can be reduced, and the combability and fluffy effect of the hair can be improved.

The present invention discloses a perfluoromethylcyclohexanone microcapsule fire extinguishing medium and its preparation process, which relates to the field of fire fighting technology. A perfluoromethylcyclohexanone microcapsule fire extinguishing medium is composed of a core material and a shell material. The core material includes perfluoromethylcyclohexanone, silicon dioxide, and azobisisobutyronitrile. The shell material includes modified guar gum, acrylic resin, aluminum hydroxide, potassium nitrate, and an emulsifier. The modified guar gum is prepared by the following method: tetrahydrofuran, guar gum, and triethylamine are sequentially added into a reactor, stirred and mixed evenly, and then a tetrahydrofuran solution of diphenylphosphinyl chloride is added dropwise. After the addition is completed, the temperature is raised to 75-85°C and the reaction is carried out for 10-14 hours, followed by post-treatment to obtain diphenylphosphinyl chloride-modified guar gum. The present invention modifies guar gum with diphenylphosphinyl chloride and then uses the modified guar gum for the shell material of perfluoromethylcyclohexanone microcapsules, improving the fire extinguishing performance, heat resistance, and long-term stability of perfluoromethylcyclohexanone microcapsules.

The invention discloses a metal ion-mediated composite polysaccharide-based steady-state probiotic loading body as well as a preparation method and application thereof, and belongs to the technical field of microorganisms. Sodium alginate and metal ions are coordinated and self-assembled through interaction of non-covalent supramolecules to form a metal ion-alginate skeleton network, functional guar gum is further filled, nano-scale aggregates are pushed to be spontaneously deposited on the surfaces of thalli, and a compound polysaccharide coating with excellent adhesion performance and steady-state performance is generated, so that the stability of the composite polysaccharide coating is improved. The independent coating of the probiotics is realized. The presence of metal ions increases the affinity of the biological material to the coated probiotics, and guar gum endows the probiotic delivery system with good adhesion characteristics. According to the probiotic loading body, the operation steps of an existing cell surface modification technology are simplified, the density is improved while the usage amount of biological materials is reduced, cells can be protected from being damaged by the gastrointestinal tract stress environment so as to maintain the activity of probiotics, and the colonization capacity and the biological activity of the probiotics in the intestinal tract are improved.

The invention provides a humic acid type plant pollen sensitization inhibitor as well as a preparation method and a use method thereof, and the humic acid type plant pollen sensitization inhibitor is prepared from the following raw materials in parts by mass: 1 to 2 parts of polyvinyl alcohol, 0.01 to 0.05 part of guar gum, 2 to 10 parts of acrylic acid, 0.05 to 0.2 part of initiator, 0.5 to 2 parts of potassium humate and 50 to 250 parts of water. The humic acid type plant pollen allergy inhibitor is environment-friendly and low in cost, and has good biocompatibility and allergy inhibition effect.

The invention belongs to the field of fermentation, and particularly relates to a complex microbial inoculant, original cheese, processed cheese with a blood sugar reducing function and preparation and application of the complex microbial inoculant. Wherein the processed cheese is prepared by the method comprising the following steps: mixing the components including raw cheese, sugarcane juice, corn oil, casein, concentrated milk protein, blueberry powder, mono / diglycerol fatty acid ester, sodium citrate, sodium tripolyphosphate, sodium hexametaphosphate, salt guar gum, potassium sorbate and water, and then emulsifying to obtain the processed cheese, the sugar cane juice, the corn oil, the casein, the concentrated milk protein, the blueberry powder, the mono / diglycerol fatty acid ester, the sodium citrate, the sodium tripolyphosphate, the sodium hexametaphosphate, the salt guar gum, the potassium sorbate and the water, the original cheese is prepared from a complex microbial inoculant, and the complex microbial inoculant comprises lactococcus lactis bacterial powder, lactococcus lactis subsp. Lactis bacterial powder, lactobacillus delbrueckii subsp. Lactis bacterial powder, lactobacillus plantarum bacterial powder and lactobacillus paracasei bacterial powder. The processed cheese provided by the invention has a better function of controlling blood sugar, and meanwhile, the processed cheese is fine and uniform in texture and has good smearing performance.

The invention provides transparent shampoo with fluffy and anti-dandruff effects and a preparation method of the transparent shampoo. The shampoo comprises the following components in percentage by weight: 10%-20% of sodium laureth sulfate; 0.5% to 10% of ammonium laureth sulfate; 0.5%-10% of cocamidopropyl betaine, 0.5%-10% of 0.5%-10% of coconut oil fatty acid monoethanolamide; 0.5% to 10% of decyl glucoside; 0.6% to 1.5% of capryloyl glycine; 0.1% to 1% of cationic guar gum; 0.1% to 1% of polyquaternium-10; 0.1% to 1% of polyquaternium-11; 0.1% to 1% of polyquaternium-51; 0.01% to 2% of magnolol; 0.01% to 2% of menthol; 0.1%-1% of sodium chloride; 0.1%-1% of citric acid; and 0.1%-1% of disodium EDTA. The shampoo disclosed by the invention has the effect of improving the combing performance in a dry hair state, can effectively improve the smoothness of hair and the touch comfort during use, and also has a supporting effect and antibacterial and anti-dandruff effects. According to the shampoo process, the clarity and appearance stability of the product are remarkably improved, and the shampoo can be kept in a transparent and uniform state for a long time.

The invention discloses a small-molecule low-adsorption waterproof lock fracturing fluid and a preparation method thereof, and belongs to the technical field of fracturing fluids, the fracturing fluid is composed of a base fluid, a gel breaker solution and a cross-linking agent solution according to a volume ratio of 100: 8-10: 1-2; the base solution is prepared from the following components in percentage by weight: 0.1 to 0.2 percent of micromolecule modified guar gum, 0.2 to 1 percent of polyacrylamide, 0.05 to 0.3 percent of waterproof locking agent, 0.3 to 0.7 percent of degradable fiber and the balance of water; the cross-linking agent solution comprises the following components in percentage by weight: 0.2-0.6% of an organic boron cross-linking agent or 0.2-0.6% of an organic titanium cross-linking agent and the balance of water; the gel breaker solution comprises the following components in percentage by weight: 0.1-0.3% of capsule dressing, 1-2% of capsule core and the balance of water. The fracturing fluid is small in viscosity, good in water locking resistance, high in glue discharging speed and small in damage to strata, and the problem of water locking existing in fracturing fluids in the prior art can be effectively solved.

Disclosed are microcapsule compositions having a microcapsule that contains a microcapsule core and a microcapsule shell encapsulating the microcapsule core. The microcapsule has a particle size of 1 micron to 100 microns in diameter. The microcapsule core contains an active material. The microcapsule shell is formed of at least three moieties, in which a first moiety is derived from a polygalactomannan, a second moiety is derived from a polyisocyanate, and a third moiety is derived from a multi-functional aldehyde or a tannic acid.

The present application discloses an injectable hydroxyapatite filler and a preparation method thereof, and belongs to the field of biomaterials. A preparation method of an injectable hydroxyapatite filler comprises the following steps: taking animal-derived bone and calcining it, crushing it to obtain natural hydroxyapatite, mixing it with a porogen in a thickening solution, forming a hydroxyapatite slurry, spray-drying the hydroxyapatite slurry into particles, obtaining hydroxyapatite microspheres, then calcining the hydroxyapatite microspheres to obtain porous hydroxyapatite; then epoxidizing to obtain epoxidized hydroxyapatite; cross-linking polyethylene glycol and guar gum to obtain polyethylene glycol-guar gum prepolymer, and then aminating to obtain amino polyethylene glycol-guar gum prepolymer; epoxidized hydroxyapatite, amino polyethylene glycol-guar gum prepolymer, and collagen aqueous solution are mixed and shaken to obtain an injectable hydroxyapatite filler. The present application has the advantages of improving the mechanical properties and biocompatibility of hydroxyapatite.

The invention discloses a high-temperature-resistant and salt-resistant fracturing fluid and a preparation method thereof, and relates to the technical field of oil field fracturing fluids. When the high-temperature-resistant and salt-resistant fracturing fluid is prepared, sodium 3-chloro-2-hydroxypropane sulfonate, N, N-dimethylacrylamide and ethylene glycol react to prepare a quaternized solid product, and then the quaternized solid product reacts with 1-bromooctadecane to prepare an amphoteric hydrophobic monomer; guar gum powder reacts with 3-(1-naphthyloxy)-1, 2-epoxypropane to prepare naphthyloxy functionalized guar gum, and then the naphthyloxy functionalized guar gum, acrylamide and an amphoteric hydrophobic monomer are subjected to initiated polymerization through ceric ammonium nitrate to prepare modified guar gum; enabling zirconium oxychloride octahydrate, titanium chloride, lactic acid, ethanediamine and glycerol to react to prepare an organic zirconium cross-linking agent; and finally, mixing the modified guar gum, an organic zirconium cross-linking agent, sodium thiosulfate, sodium bromate, a surfactant and water to prepare the high-temperature-resistant and salt-resistant fracturing fluid. The high-temperature-resistant and salt-resistant fracturing fluid prepared by the invention has excellent high-temperature resistance and salt resistance.

The invention discloses a zeolite composite particle hemostatic material based on modified black talc doping and a preparation method thereof, the hemostatic material is prepared by taking calcium exchange zeolite, modified black talc and seawater pearl powder as raw materials and guar gum as a binder through granulation; wherein the modified black talc is obtained by calcining black talc at 600-900 DEG C for 1-3 hours; the novel composite hemostatic material is designed for the first time by utilizing the characteristics that black talc subjected to high-temperature calcination modification is high in water absorbability and has an obvious inhibition effect on staphylococcus aureus, has the advantages of rapid hemostasis and lasting antibiosis, effectively improves the shortages of a traditional zeolite hemostatic material, and can promote rapid healing of wounds; in addition, the preparation method is simple and convenient, low in raw material cost and very suitable for large-scale industrialized production.

The application relates to a dry powder drag reducer for fracturing fluid and a preparation method thereof, and belongs to the technical field of drag reducers; the dry powder drag reducer is copolymerized and modified by preparing a polymerizable modifier, aromatic rings and sulfonic acid ion structures are introduced into the dry powder drag reducer, the high-temperature resistance and salt resistance of the dry powder drag reducer are effectively improved, in addition, the modified dry powder drag reducer structure also has a catechol structure, can form a stable five-membered ring borate with a boron crosslinking agent, and the dry powder drag reducer can be mixed with a guar gum drag reducer when the boron drag reducer is used, so that the problem of poor sand carrying capacity of the dry powder drag reducer is effectively solved.

The invention discloses an elastic chewable nicotine oral product and a preparation method thereof. The elastic chewable nicotine oral product comprises a nicotine source and an additive, the nicotine source is dissolved in the mixed solution of the additive, so that the nicotine oral product forms a soft elastomer, and the nicotine is slowly released in the oral cavity through chewing; the nicotine source is extracted or chemically synthesized from tobacco; the additive comprises a gelling agent, and the gelling agent comprises one or a combination of more of gelatin, agar, konjac polysaccharide, xanthan gum, pectin, carrageenan, sodium alginate, semen plantaginis polysaccharide, guar gum, gellan gum, curdlan, whey protein, casein or soybean protein. The gel is added into the carrier to realize physical embedding of the nicotine, the elastic and chewable oral nicotine product can be obtained without bonding fixation, and the nicotine is released through gel swelling-diffusion regulation, so that the oral nicotine product has no residue in the oral cavity and does not pollute the package when being used, and the purposes of dynamically releasing the nicotine and improving the consumption experience are realized.

The invention discloses an aqueous film-forming foam extinguishing agent based on a short fluorocarbon chain, and relates to the technical field of extinguishing agents. The invention discloses an aqueous film-forming foam extinguishing agent based on a short fluorocarbon chain. The cleaning agent is prepared from the following raw materials in parts by weight: 8 to 12 parts of modified short fluorocarbon chain surfactant, 5 to 8 parts of dodecyl dimethyl betaine, 50 to 60 parts of deionized water, 2 to 4 parts of modified guar gum, 4 to 6 parts of ethylene glycol, 1 to 2 parts of benzotriazole, 0.5 to 1 part of sodium bicarbonate, 0.3 to 0.5 part of polydimethylsiloxane, 3 to 5 parts of decabromodiphenyl ethane and 1 to 2 parts of sodium carboxymethyl cellulose. 0.5 to 1 part of disodium ethylene diamine tetraacetate, 0.2 to 0.4 part of isothiazolinone and 0.5 to 1 part of nano silicon dioxide. According to the aqueous film-forming foam extinguishing agent based on the short fluorocarbon chain, the modified short fluorocarbon chain surfactant and the nano silicon dioxide cooperate, so that a film is formed quickly and compactly, and the extinguishing efficiency is high; the modified guar gum improves the foam stability, and the foam holding time is long; the raw material ratio is scientific, and both equipment protection and fire control are considered; the preparation process is rigorous, the product quality is stable, and various fire extinguishing scenes are adapted.

The invention relates to a dry powder drag reducer for fracturing fluid and a preparation method thereof, and belongs to the technical field of drag reducers. The dry powder drag reducer is subjected to copolymerization modification by preparing the polymerizable modifier, an aromatic ring and sulfonic acid ion structure is introduced into the dry powder drag reducer, the high temperature resistance and salt resistance of the dry powder drag reducer are effectively improved, in addition, the modified dry powder drag reducer structure further has a catechol structure, and the modified dry powder drag reducer has a good application prospect. The dry powder drag reducer can form stable five-membered ring boric acid ester with a boron cross-linking agent, when the boron drag reducer is used, the dry powder drag reducer can be mixed with a guar gum drag reducer for use, and the problem that the dry powder drag reducer is poor in sand carrying capacity is effectively solved.

The invention provides a method for solidifying soft soil through the biological mineralization effect of guar gum and a urease-producing strain, the urease-producing strain is bacillus pasteurii DC419, and the preservation number of the urease-producing strain is CCTCC (China Center for Type Culture Collection) NO: M 20222038. The method for solidifying the soft soil comprises the following steps: mixing urease-producing strain fermentation liquor and cementing liquid to obtain mixed liquor; soft soil and guar gum are evenly mixed, the mixed solution is added, the mixture is evenly mixed and then stands still, and solidification of the soft soil is achieved. The soft soil cured by the method disclosed by the invention has relatively high compressive strength and relatively good waterproof capability.

The invention discloses an ultrahigh-temperature and high-salinity water-based guanidine gum fracturing fluid and a preparation method thereof. The guanidine gum fracturing fluid is prepared from a base fluid, a buffering agent, a cage-shaped molecule composite cross-linking agent and a gel breaker according to the mass ratio of 100: (0.1 to 0.6): (0.2 to 0.8): (0.01 to 0.08), the base solution is prepared from the following components in percentage by weight: 0.55 to 0.6 percent of a cyclodextrin modified thickening agent, 0.1 to 0.6 percent of a composite antioxidant, 0.4 to 0.8 percent of a multi-effect auxiliary agent, 0.1 to 0.2 percent of a sterilizing agent and the balance of hypersalinity water. According to the ultrahigh-temperature hypersalinity water-based guanidine gum fracturing fluid, through chemical modification of the guanidine gum thickening agent and synergistic interaction of various additives, the ultrahigh-temperature hypersalinity water-based guanidine gum fracturing fluid can resist the temperature of 200 DEG C, can be directly prepared by using hypersalinity water, realizes good fracture forming, sand carrying, temperature resistance and shearing resistance, and is low in filtration loss and damage; and the requirements of fracturing construction of ultra-deep ultra-high-temperature low-permeability reservoirs of offshore and onshore oil fields are met.

The invention provides a multifunctional plugging agent for oil wells with medium and high water content and a preparation method of the multifunctional plugging agent. The plugging agent is prepared from the following substances in percentage by weight: 1-10% of high-strength nano gel particles, 2-5% of nano silicon dioxide dispersion liquid, 1-5% of PPG chitosan pre-crosslinking particles, 1-5% of guanidine gum dry powder, 1-2% of active calcium magnesium aluminum silicate, 0.5-1% of active silica gel, 0.5-1% of sodium sulfonate, 0.1-1% of a crosslinking regulator and the balance of water. Chitosan and cellulose nanocrystals are compounded for use, so that the strength of PPG chitosan pre-crosslinked particles is greatly improved. Chitosan reacts with an acrylamide monomer, 2-acrylamido-2-methylpropanesulfonic acid and a cross-linking agent methylene bisacrylamide to generate a double-network polymer product, so that the gel strength is greatly improved, and higher pressure bearing capacity, plugging capacity, scouring resistance and the like are achieved. Through the synergistic effect of all the components, the plugging water control effect is improved, water is plugged, oil is not plugged, and the plugging agent has important significance on plugging water control in the extra-high water cut period and improvement of oil well productivity.

The invention relates to the technical field of pet cat litter, in particular to edible bean dreg cat litter. In particular to edible bean dreg cat litter. The cat litter is prepared from the following raw materials in parts by weight: 600 to 650 parts of bean dregs with the water content of 10 to 12 percent, 300 to 320 parts of corn starch, 18 to 22 parts of guar gum, 8 to 12 parts of vital gluten, 30 to 35 parts of food-grade calcium carbonate, 1 to 2 parts of nisin, 1 to 2 parts of skim milk powder, 0.8 to 1.2 parts of vitamin E, 0.4 to 0.6 part of lactobacillus acidophilus, 0.4 to 0.6 part of saccharomyces cerevisiae, 0.4 to 0.6 part of bacillus amyloliquefaciens and 0.4 to 0.6 part of rhizopus. The cat litter further comprises 1-2 parts of a natural PH indicator. The cat litter aims at solving the problem that kittens or heterotriophagia cats eat the cat litter by mistake, so that intestinal diseases are caused.

The invention discloses a deacetylated konjac glucomannan composite hydrogel and a preparation method thereof, the raw materials comprise deacetylated konjac glucomannan, agar, guar gum and water, the water and polysaccharide powder are mixed according to a certain proportion, magnetically stirred for 15 minutes, then placed in a water bath kettle at 90 DEG C for water bath for 30 minutes, taken out and cooled to room temperature, and the deacetylated konjac glucomannan composite hydrogel is obtained. And refrigerating in a refrigerator at 4 DEG C for 24 hours. The high-elasticity deacetylated konjac glucomannan composite hydrogel is obtained by controlling the adding amount of raw material powder, the deacetylation degree, the stirring time, the water bath temperature and the water bath time, improving the problems of poor gel strength, overlarge viscosity and poor thermal stability of konjac glucomannan single gel and remarkably improving the elasticity and the water-holding capacity of the gel.

The application belongs to the technical field of food, and particularly relates to a low GI oat bar and a preparation method thereof. The low GI oat bar comprises the following raw materials in parts by weight: oat 150-200 parts, flour 20-40 parts, nut 20-40 parts, dried fruit 20-40 parts, whey protein powder 10-30 parts, isomaltulose 40-80 parts, guar gum 5-10 parts, vegetable oil 10-20 parts, butter 5-15 parts, water 40-60 parts and salt 0.5-2 parts. The low GI oat bar provided by the application is crisp in texture, and the problems of tooth sticking and surface cracking during storage are well solved, and the functionality and eating experience of the product are improved.

The invention provides a temperature-sensitive hydrogel fire extinguishing additive, a preparation method thereof and a fire extinguishing agent. The temperature-sensitive hydrogel fire extinguishing additive is prepared from the following raw materials in parts by mass: 1 to 3 parts of methyl cellulose, 2 to 6 parts of cross-linking agent, 2 to 12 parts of lubricant, 10 to 20 parts of metal salt, 1 to 3 parts of hydrocarbon surfactant, 3 to 6 parts of phosphorus flame retardant, 3 to 5 parts of cosolvent and 1 to 5 parts of heat stabilizer. The cross-linking agent is selected from one or more of sodium alginate, sodium polyacrylate, polyacrylamide, carrageenan, guar gum, xanthan gum, genipin, tannic acid and sodium carboxymethyl cellulose, and the lubricant is polyethylene glycol and / or polyvinyl alcohol. The temperature-sensitive hydrogel fire extinguishing additive disclosed by the invention is non-toxic, harmless, non-corrosive, environment-friendly, easy to degrade, easy to prepare and store, low in viscosity, high in critical transition temperature and high in gelling speed, and can extinguish a fire disaster of the lithium ion battery more quickly, avoid re-combustion of the lithium ion battery and realize continuous cooling of the battery at the same time.

The invention discloses edible mushroom and hydrophilic colloid composite 3D printing ink and a preparation method thereof. The printing ink is prepared from, by mass, 15%-19% of edible mushroom residues, 1%-3% of hydrophilic colloid and the balance water, the edible mushroom residues are protein extraction by-products, and the hydrophilic colloid can be selected from sodium alginate, guar gum and xanthan gum. The preparation method comprises the steps of raw material crushing, hydrophilic colloid dissolving, mixing and stirring, water bath heating, cooling and the like. A powerful technical support is provided for the edible mushroom industry by exploring an edible mushroom deep processing technology, and in the aspect of performance, by optimizing the raw material proportion and the preparation technology, the printing precision and stability of the ink are improved, and the texture and rheological properties are adjusted, so that the ink is more suitable for 3D printing; according to the preparation technology, specific smashing, stirring, heating and cooling conditions ensure that the ink is uniform in component and stable in performance, the rheological property is improved through cold and hot cycle treatment, the printing precision deviation is controlled within + / -0.1 mm, and a high-quality ink material is provided for the field of 3D printing.

Marker composition comprising water, 1-10 wt.% non-ionic surfactant selected from alkyl polyglucosides, alcohol ethoxylates and alcohol ethoxylate propoxylates, or mixtures thereof, 1-5% organic solve

The invention discloses a fluoride-free strong-acid-free reverse flotation method for extracting a high-purity quartz sand flotation product from granite pegmatite, and belongs to the technical field of mineral flotation. The method comprises the following steps: carrying out graded crushing and ore grinding on granite pegmatite to obtain slurry to be treated; carrying out wet magnetic separation on the to-be-treated slurry to obtain ore pulp after magnetic separation and magnetic-containing minerals; the pH value of the ore pulp is not adjusted, reverse flotation is carried out in the presence of a quartz mixed inhibitor, and a feldspar product and a quartz product are obtained; the quartz mixed inhibitor is a combination of a component A and a component B, wherein the component A is selected from at least one of sodium metasilicate, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and salinized water glass; the component B is selected from at least one of guar gum, Arabic gum, sodium humate and citric acid. The method is free of fluorine and strong acid, green and efficient, and is a method for preparing high-purity quartz sand from pegmatite with high industrial application feasibility.

The invention aims to provide a method for preparing a polyaluminum ferric silicate-guar gum composite flocculant by using red mud as a raw material, and belongs to the technical field of flocculant preparation.The method comprises the steps that the red mud is used as the raw material and subjected to roasting activation, acid leaching, alkaline leaching and other reactions, a polyaluminum ferric silicate flocculant is obtained and reacts with guar gum, and the polyaluminum ferric silicate-guar gum composite flocculant is obtained. The polyaluminum ferric silicate-guar gum composite flocculant is obtained. Through the synergistic effect of an inorganic macromolecular chain (providing charge neutralization and a preliminary floc skeleton) of the polysilicate aluminum ferric and a natural polysaccharide chain (enhancing bridging adsorption and floc ductility) of the guar gum, the floc forming speed is increased, and the sedimentation efficiency is improved.

The invention discloses a compound water retention agent for food and a preparation method of the compound water retention agent, and mainly relates to the technical field of food additives. Compared with the prior art, sodium tripolyphosphate and sodium dihydrogen phosphate are used as composite phosphates, and are matched with the coordination effect of the enzyme preparation, glycerol, microcapsules, sodium carbonate, sodium citrate, maltodextrin, protein additive and thickening agent to maintain high water-retaining property, elasticity and tenderness. According to the invention, microcapsules prepared by taking glucomannan and the like as wall materials, taking casein as an emulsifier and taking grease core materials are also added, when the meat food is subjected to deep-frying processing, grease slowly released by the microcapsules can permeate into a meat protein network to weaken the cross-linking strength among protein molecules, and other components such as xanthan gum, guar gum and the like are matched, so that the meat food has a good deep-frying effect. Therefore, the hardness of the meat product is reduced, and high elasticity and tenderness are kept.

The invention provides a cat litter low-temperature composite granulation preparation process based on natural sodium-based ore, and relates to the technical field of pet product manufacturing, and the cat litter low-temperature composite granulation preparation process comprises the following steps: S1, raw material treatment, including sodium-based ore and plant fiber treatment, S2, gradient mixing, including putting sodium-based ore, plant fiber and modified mineral materials in a preset proportion into stirring equipment for dry mixing; s3, carrying out low-temperature composite granulation, and carrying out segmented temperature control on a twin-screw extruder; S4, spraying a nano coating, and putting the particles into a fluidized bed, and adjusting the spraying pressure to 0.20-0.27 MPa; and S5, carrying out dynamic grading screening, and putting the particles sprayed with the nano coating into an intelligent dynamic grading screening machine. The natural sodium-based ore and the plant fibers are adopted as main raw materials, and the uniformity and the performance stability of components of the cat litter are improved through gradient mixing; the surface area of the three-dimensional honeycomb reticular particles formed by the low-temperature composite granulation process is increased, and the adsorption performance and the air permeability are improved.

The invention relates to the technical field of bioengineering, in particular to a process for continuously producing nicotine based on immobilized enzyme. The immobilized microbial agent comprises a composite carrier, an engineering strain and an immobilized auxiliary agent, in the process for continuously producing nicotine based on immobilized enzyme, amine oxidase of an engineering strain is subjected to site-specific modification, so that spatial structure deformation when the amine oxidase is combined with a carrier is reduced, and a three-dimensional network structure of hydroxyethyl chitosan-guar gum composite microspheres in the composite carrier is matched to provide an adaptive microenvironment; the activity loss of enzyme molecules caused by steric hindrance or structural change is reduced; in the immobilization auxiliary agent, gallic acid and an enzyme molecule sulfydryl form a coordinate bond to maintain an active center conformation, glutaraldehyde and polyethyleneimine enhance the binding stability through a crosslinking effect and charge regulation, and the maintaining effect of enzyme activity during continuous production is improved, so that the enzyme activity loss in the immobilization process is reduced, and the immobilization efficiency is improved. The stability of the enzyme in long-term continuous reaction is enhanced.

The invention belongs to the field of guanidine gum fracturing fluids, and discloses a delayed polyamino boron cross-linking agent for a guanidine gum fracturing fluid system, a preparation method of the delayed polyamino boron cross-linking agent, and a guanidine gum fracturing fluid containing the delayed polyamino boron cross-linking agent. The preparation method of the delayed polyamino boron cross-linking agent comprises the following steps: carrying out a reaction on DL-homocysteine thiolactone hydrochloride and an acyl chloride monomer to prepare a dithiolactone monomer; the preparation method comprises the following steps: reacting a dithiolactone monomer with polyethylene polyamine to prepare a long straight chain polyamino intermediate product; the preparation method comprises the following steps: reacting boric acid, polyol and n-butyl alcohol to prepare organic borate; reacting the long straight-chain polyamino intermediate product with organic borate to prepare polyamino borate; and reacting the polyamino boric acid ester with the corrosion inhibitor to prepare the delayed polyamino boron cross-linking agent. The delayed polyamino boron cross-linking agent prepared by the invention can be blended with a fracturing fluid base solution to obtain a guanidine gum fracturing fluid which is good in shear resistance, stable in structure and has a delayed effect.