18 results about "Welan gum" patented technology

The invention provides a medium-low permeability oil reservoir rhamnolipid foam oil displacement system and a screening method and application, and relates to the technical field of microbial oil recovery, the medium-low permeability oil reservoir rhamnolipid foam oil displacement system comprises the following steps: S1, screening an applied oil reservoir; s2, determining a rhamnolipid foam flooding system based on the oil reservoir mineralization degree; s3, based on the porosity of the oil reservoir, the injection mode of a rhamnolipid foam oil displacement system is determined, the rhamnolipid foam oil displacement system comprises a foaming agent, a foam stabilizer, nitrogen and water, the foaming agent comprises one or more of dirhamnose difat, dirhamnose monofat, single rhamnose monofat and single rhamnose difat fermentation liquor, and the foam stabilizer comprises one or more of dirhamnose difat, dirhamnose monofat, single rhamnose monofat and single rhamnose difat fermentation liquor. The foam stabilizer is prepared from one or more of xanthan gum, welan gum, Wollan gum, Dide gum, gellan gum, rhamnose gum, diidine gum, plant cellulose and bacterial cellulose. The method has the beneficial effects that the oil reservoir application range is wide, the pertinence is high, the field test effect is good, efficient generation and long-acting migration of foam in the oil reservoir are guaranteed, green and high-quality development of old oil fields is promoted, and achievement of the national dual-carbon strategy is assisted.

The invention relates to the technical field of biopolymer materials, in particular to temperature-resistant and salt-resistant welan gum based on cationic-hydrophobic synergistic modification as well as a preparation method and application of the temperature-resistant and salt-resistant welan gum. The preparation method comprises the following steps: dissolving welan gum powder in a system containing NaOH and DMSO, adding 3-chloro-2-hydroxypropyl trimethyl ammonium chloride and 1-bromohexadecane, adding ethanol, centrifuging to obtain a reaction solution, and finally centrifuging and freeze-drying the solid to obtain the welan gum. The salt-resistant and temperature-resistant tackifier can be used in oilfield exploitation, realizes dynamic salt-resistant and temperature-resistant tackifying in an extreme salt temperature environment, has higher viscosity, can maintain stable viscosity along with the increase of salt concentration, and is suitable for tertiary oil recovery of a high-salt stratum; the compound can be used as a seed coating agent, a soil conditioner, a pesticide slow-release carrier and a fertilizer synergist in agriculture; the product can be used as a thickening agent, a stabilizing agent and a gelling agent in the food industry; the product can be used as a humectant and a rheology modifier in the cosmetic industry; the product can be used as a cement additive in the field of building materials, and can be used in tile glue and putty powder.

To provide a tablet that is easy to swallow and also has reduced production cost, and a method of producing the same.SOLUTION: A tablet has a naked tablet containing a gelator, and at least one selected from sugar alcohol, monosaccharide, disaccharide, oligosaccharide, cellulose, cellulose derivative, starch, starch derivative and starch decomposition product. Preferably, the gelator is at least one selected from xanthan gum, locust bean gum, guar gum, mannan, glucomannan, hyaluronan, agar, alginic acid, tamarind gum, psyllium seed gum, tara gum, carrageenan, acacia gum, gum arabic, ghatti gum, tragacanth gum, karaya gum, cassia gum, rhamsan gum, welan gum, macrophomopsis gum, curdlan, pullulan, gellan gum, pectin, and soybean polysaccharide, gelatin, collagen, polyglutamic acid, polylactic acid, polyglutamic acid and the like.SELECTED DRAWING: None

The invention relates to the technical field of plant disease prevention and treatment, in particular to application of a Welan gum aqueous solution to prevention and treatment of plant diseases, and the concentration of the Welan gum aqueous solution is 50 micrograms per milliliter to 100 micrograms per milliliter. The molecular weight of the welan gum is 800 Da to 900 Da. Experiments prove that the Welan gum aqueous solution can inhibit spore germination and mycelial growth of the original fungus curvularia lunata of the corn curvularia leaf spot, the physiological function of leaves is not affected after spraying, in addition, the Welan gum aqueous solution also has an inhibiting effect on diseases such as northern corn leaf blight and wheat scab, and is expected to be used as a green and safe pesticide, and the Welan gum aqueous solution has broad application prospects. The compound is applied to comprehensive prevention and control of diseases of corn and other crops, and can also be used as a dispersing agent and a slow-release agent to be mixed with other bacteriostatic agents to improve the prevention and control effect.

The invention provides a foamable oral care composition which contains a foaming agent and a foam synergistic agent, and the foaming agent is one or a combination of more of soybean protein isolate, hydrolyzed wheat protein, potato protein, casein phosphopeptides (CPP), oat protein and vital gluten; the foam synergistic agent is one or a combination of more of carrageenan gum, abelmoschus manihot gum, fenugreek gum, guar gum, locust bean gum, karaya gum, cassia seed gum, caesalpinia spinosa gum, flaxseed gum, sodium alginate, tragacanth gum, welan gum, sa-hao seed gum, gleditsia sinensis lam carbohydrate gum, sanxian gum and sesbania gum. The foam amount of the toothpaste is increased, the foaming amount of the toothpaste using a chemical surfactant in the market can be achieved, and the habit of consumers on the foam demand of the toothpaste can be completely met.

The utility model relates to the technical field of welan gum fermentation, and discloses a high-viscosity microbial polysaccharide welan gum fermentation device which comprises a fermentation tank body and supporting legs fixedly arranged at four corners of the lower end of the fermentation tank body. After the device is used, the stirring head needs to be detached and cleaned, when the device is used for preparing welan gum, various required raw materials can be added into the fermentation tank body through the feeding pipe, and then the motor is started to drive the stirring structure through the output end of the motor to mix and stir the raw materials in the fermentation tank body; after long-time fermentation, the movable cover can be directly lifted upwards, at the moment, the movable cover, the motor and the stirring structure extending into the fermentation tank body can be completely taken out, after stirring fermentation is completed, the stirring structure can be completely taken out through the movable cover to be cleaned, fermented materials with high viscosity can be conveniently cleaned, and the fermentation efficiency is improved. The subsequent fermentation operation is convenient.

To provide a composition appropriate for food discoloration prevention, as well as related techniques.SOLUTION: There is provided a composition for preventing discoloration of foods selected from the group consisting of vegetables and fruits, the composition including: a first component selected from the group consisting of gellan gum, locust bean gum, guar gum, tamarind seed gum, modified starch, carrageenan, alginate, and agar; a second component selected from the group consisting of xanthan gum, gum arabic, tremella gum, and welan gum; and a third component selected from the group consisting of dietary fiber, agar, starch degradation products, cellulose, and cellulose derivatives.SELECTED DRAWING: None

The invention provides a method for synchronously treating kitchen waste and garden waste by using a compound enzyme, which specifically comprises the following steps: preparing a compound enzyme preparation, pretreating the kitchen waste and the garden waste, and performing enzymolysis on the compound enzyme preparation to prepare an organic fertilizer, and belongs to the technical field of solid waste treatment. According to the prepared compound enzyme preparation, the silicon-based polyphosphazene and zinc double-layer complex is adopted for immobilizing the compound enzyme, the original activity of the compound enzyme can be guaranteed, and the immobilization efficiency of the compound enzyme is effectively improved; the temperature-sensitive unit responds to release the unlinking agent in the enzymolysis temperature rising process, the aldehyde group contained in the unlinking agent interacts with the hydroxyl group in the welan gum double-helix network, the compound enzyme in the immobilized enzyme structure is released, and the enzyme activity is improved. Protein, fat, cellulose and the like in the kitchen waste and the garden waste are decomposed, conversion of organic solid waste is accelerated, the reaction process is 2-3 h, and rapid recycling of the waste is achieved.

A foamable oral care composition, comprising a protein foaming agent and a foam synergist. The protein foaming agent is one of, or a combination of more than one of, isolated soy protein, hydrolyzed wheat protein, potato protein, casein phosphopeptide (CPP), oat protein, and vital wheat gluten. The foam synergist is one of, or a combination of more than one of, karaya gum, Abelmoschus manihot gum, fenugreek gum, guar gum, locust bean gum, sterculia gum, cassia seed gum, tara gum, linseed gum, sodium alginate, tragacanth gum, welan gum, Artemisia desertorum gum, Gleditsia sinensis Lam. gum, xanthan gum, and sesbania gum. The oral care composition can increase the foaming amount of toothpaste, can achieve the foaming amount of toothpaste using chemical surfactants on the market, and can fully meet consumers' needs for toothpaste foam.

The application belongs to the technical field of bioengineering, and particularly relates to a sphingan oligosaccharide and a preparation method and application thereof. The application provides a sphingan oligosaccharide, the main chain structure of which is beta-L-Rhap-(1→3)-beta-D-Glcp-(1→4)-beta-D-GlcpA, and the sphingan oligosaccharide is obtained by degrading sphingan (Welan gum, gellan gum and diutan gum) by sphingan degrading enzyme SpnR and then purified by liquid chromatography. The sphingan oligosaccharide prepared by the preparation method has mild reaction conditions and is simple to separate. The sphingan oligosaccharide prepared by the application has good plant growth promoting ability and intestinal probiotic effect, and can be used in the fields of agriculture, food, health products and the like, and the application of the sphingan and the sphingan oligosaccharide is expanded.

The present invention provides a compound microbial inoculant and its application, belonging to the technical field of agricultural microorganisms. Specifically, it is a compound microbial inoculant, which comprises the following components: Streptomyces microflavus, Bacillus firmus, Trichoderma longibrachiatum, welan gum, and fucoidan oligosaccharide. The compound microbial inoculant provided by the present invention can effectively colonize in saline-alkali soil, and is more conducive to colonizing around the roots, especially the colonization effect around the roots of gramineous plants is better; and it can effectively increase the root proliferation of crops in saline-alkali soil, especially the root proliferation effect of gramineous crops is better, and effectively reduces the dead seedling rate of corn seedlings when planting corn in saline-alkali soil.

The application discloses a talc and chalcopyrite floatation separation inhibitor and application, and belongs to the technical field of sulfide copper minerals and hydrophobic silicate gangue ore separation. The inhibitor is welan gum, and the welan gum is used as a talc inhibitor for separating chalcopyrite and talc; the application mainly adds the inhibitor welan gum, so that the welan gum is selectively adsorbed on the surface of talc, the hydrophobic difference between talc and chalcopyrite is enlarged, the hydrophobic difference between talc and chalcopyrite is enlarged, and the separation of chalcopyrite and talc is realized. In addition, the talc inhibitor welan gum has the characteristics of non-toxicity and good environmental friendliness.

The invention relates to a tailing sand conditioning agent as well as a preparation method and application thereof, the tailing sand conditioning agent is prepared from the following raw materials: modified biomass charcoal-mineral composite powder, nano silicon dioxide, sodium oleate, sodium thiosulfate, sodium hydroxide, talcum powder, welan gum, a polyether type defoaming agent and deionized water, the preparation method of the modified biomass charcoal-mineral composite powder comprises the following steps: uniformly compounding and mixing pod shell powder, cocklebur fruit powder and montmorillonite powder according to a mass ratio to obtain a mixture, placing the mixture in an acidic activator solution, carrying out dipping treatment, carrying out heat treatment, washing to be neutral, and drying to obtain the modified biomass charcoal-mineral composite powder. The prepared tailing sand conditioning agent is applied to a concrete system containing tailing sand, the compressive strength, chloride ion permeation resistance and freeze-thaw resistance of concrete can be remarkably improved, and the durability is good.

The invention discloses a wind-erosion-resistant high-film-forming modified welan gum composite dust suppressant material and a preparation method, and belongs to the technical field of coal mine dust suppression, the wind-erosion-resistant high-film-forming modified welan gum composite dust suppressant material comprises the following raw materials by weight: 1-4 parts of welan gum, 1-3 parts of cyanuric chloride, 2-7 parts of 4-sodium aminobenzoate, 0.5-2 parts of an alkali solution, 1-3 parts of a wetting agent and 1-4 parts of a water-retaining agent; through a chemical modification method, the modified welan gum composite dust suppressant with a macromolecular network structure is formed; the dust suppressant has good cohesiveness and water-retaining property, and has potential application value in the field of dust suppression; the dust suppressant can form a compact protective film on the surface of coal dust to effectively block wind erosion, improve wind erosion resistance and delay water evaporation, so that a long-time and high-efficiency dust suppression effect is realized in a complex and changeable coal mine environment; meanwhile, the dust suppressant adopts environment-friendly and degradable raw materials, meets the requirements of green mine construction, and has a wide application prospect.

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.

The present invention belongs to the technical field of agriculture, and particularly relates to a film-forming agent for seed coating agents, a preparation method thereof, and an application. The film-forming agent for seed coating agents is mainly prepared by emulsion polymerization of a biological gum, a soft monomer, and a hard monomer in water; wherein, the biological gum is selected from diutan gum, guar gum or welan gum, and the mass percentages of the biological gum, the soft monomer, and the hard monomer in the raw material system are respectively: the biological gum is 0.01-0.1%, the soft monomer is 25-30%, and the hard monomer is 5-15%. The film-forming agent for seed coating agents provided by the present invention selects a specific biological gum to crosslink the copolymer formed by the copolymerization of the soft and hard monomers, and the obtained film-forming agent has excellent film-forming property and swelling rate, and shows better adhesion and coating uniformity when applied to seed coating agents, thereby further improving the coating quality of the seed coating agents.

The invention relates to the technical field of textiles, and discloses an antibacterial moisture absorption type Tylanon fabric and a production process thereof.The Tylanon fabric is formed by interweaving warp yarns and weft yarns, the warp yarns and the weft yarns are made of composite Tylanon fibers, and the composite Tylanon fibers take bio-based polyamide as a base material and a functional aerogel additive and the like as auxiliary materials; the aerogel additive is prepared through extrusion granulation and melt spinning processes, the aerogel additive has a highly-porous structure and serves as an additive of the Taylor fiber, firstly, the highly-porous structure can contain more moisture, and the structures of the raw materials welan gum and the cross-linking agent contain a large number of hydrophilic functional groups, so that the aerogel additive has good water absorption performance; after the cross-linking agent is added into fibers, the fabric can show an excellent moisture absorption effect, in addition, a pyridine quaternary ammonium salt functional group contained in the cross-linking agent structure has excellent broad-spectrum antibacterial performance, and the fabric can also be endowed with a good antibacterial effect.