218 results about "Pregelatinized starch" patented technology

The invention belongs to the technical field of soil improvement, and relates to a soil conditioner for saline-alkali soil and a soil improvement method. The soil conditioner comprises vinegar residues, chitin, glucose, a composite biological preparation, a modified gel and a functional additive, the composite biological agent comprises bacillus subtilis powder, bacillus licheniformis powder, trichoderma spore powder, brown algae powder and light calcium carbonate; the functional auxiliary agent comprises modified bentonite, polyglutamic acid, pregelatinized starch and biochar potassium humate. Through the synergistic effect of multiple components and structural design optimization, systematic remediation of physical properties, chemical properties and biological activity of the saline-alkali soil is achieved. According to the technology, the limitation of single function of a traditional improvement measure is broken through, and the long-standing technical problems of return salt rebound, low fertility, microbial community imbalance and the like in saline-alkali soil treatment are effectively solved by constructing a multi-layer and multi-dimensional soil improvement system.

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a melogabalin besylate tablet containing a stabilizer and a preparation method of the melogabalin besylate tablet. The melogaba besylate tablet containing the stabilizer comprises a coating and a tablet core, wherein the tablet core comprises the following components: melogaba besylate, the stabilizer, a disintegrating agent, a lubricating agent and the balance of a filling agent; and the coating is prepared from the following materials: an Intai W100 film coating premixing agent and acrylic resin IV. The filling agent comprises xylitol, pregelatinized starch and maltodextrin in a mass ratio of (3-4): 3: (1-2). The stabilizer is vitamin E succinic acid polyethylene glycol ester. The coating is prepared from the following materials: an Intai W100 film coating premixing agent and acrylic resin IV in a mass ratio of (1-1): (1-2). According to the melogabalin besylate tablet prepared by the invention, the stability and the dissolution performance can be synchronously improved.

The invention relates to the technical field of pharmaceutical preparations, in particular to a stable perindopril amlodipine tablet and a preparation method thereof, and the tablet comprises the following components in percentage by weight: 5.0% of arginine perindopril; 3.5% of amlodipine besylate; 20%-40% of pregelatinized starch; 40%-68% of a microcrystalline cellulose colloidal silicon dioxide compound; 2.5%-6% of a disintegrating agent, wherein the disintegrating agent is selected from one or more of ion exchange resin, sodium alginate and croscarmellose sodium; the pregelatinized starch and the microcrystalline cellulose colloidal silicon dioxide compound are selected as main diluents, so that the Maillard reaction possibly occurring between the lactose and the active pharmaceutical ingredients is completely avoided, the problem of increase of related substances is fundamentally solved, and the stability and the safety of the product are remarkably improved.

The invention provides a closed-loop control method for viscosity in a pregelatinized starch production process, and relates to the technical field of intelligent control, which comprises the following steps: acquiring real-time viscosity data and real-time temperature data of pregelatinized starch slurry, calculating a viscosity deviation value, calculating a temperature compensation coefficient by adopting an improved Arrhenius viscosity-temperature equation, and calculating the viscosity deviation value according to the temperature compensation coefficient. A compensated viscosity deviation value is obtained, the compensated viscosity deviation value and the change rate of the compensated viscosity deviation value are input into a double-variable fuzzy controller, and the stirring speed adjusting amount is calculated according to a fuzzy rule; according to the compensated viscosity deviation value and the change rate of the viscosity deviation value, an incremental PID control algorithm is adopted to calculate the adjusting amount of the opening degree of a steam valve, and cooperative control over steam heating and mechanical shearing is formed. According to the method, accurate compensation of the nonlinear relation between the viscosity and the temperature is achieved, by introducing a dynamic correction factor and a multi-protection mechanism, adaptability and stability under complex working conditions are enhanced, and the regulation and control efficiency and the product quality stability in the pregelatinized starch production process are effectively improved.

The invention discloses a rice cake capable of regulating postprandial blood sugar and inhibiting starch aging, and belongs to the field of food processing and preservation. The rice cake is prepared from the following raw materials in parts by mass: 100 to 300 parts of polished round-grained rice flour, 100 to 200 parts of glutinous rice flour, 5 to 30 parts of pre-gelatinized corn starch, 5 to 30 parts of wheat type B starch granules and 100 to 300 parts of water. The pre-gelatinized corn starch-wheat type B starch composite preservative prepared by mixing the pre-gelatinized starch and the wheat type B starch in proportion can effectively inhibit hardness increase caused by starch aging and retrogradation in the storage process of the rice cake and avoid taste deterioration. Meanwhile, by adding the composite starch, the digestibility rate of the rice cake is remarkably reduced, and the metabolic regulation characteristic similar to that of low glycemic index food is endowed to the product. The characteristic of a cleaning label formed by natural components of the rice highly conforms to the development trend of healthy food, and the rice is especially suitable for functional rice product development of people needing to control postprandial blood sugar fluctuation.

A lurasidone hydrochloride composition and a preparation method thereof, comprising a lurasidone hydrochloride granular composition and a lubricant. The lurasidone hydrochloride granular composition comprises lurasidone hydrochloride, cross-linked sodium carboxymethyl cellulose, silicon dioxide, pregelatinized starch, a filler, and a binder.

The invention discloses a mixed auxiliary material for traditional Chinese medicine film coated tablets and a preparation method of the mixed auxiliary material. The mixed auxiliary material comprises the following components in percentage by weight: 50-60% of etherified crosslinked starch, 15-20% of pregelatinized starch, 10-15% of sodium carboxymethyl starch, 0.6-0.8% of magnesium stearate and 2-3% of talc. The etherified cross-linked starch is used for replacing a traditional polymer, a cross-linked structure of the etherified cross-linked starch blocks water molecule permeation, pre-gelatinized starch improves powder fluidity, crushed talcum powder is mixed with the pre-gelatinized starch, microgaps are filled, a friction system is reduced, and the situation that the sheet surface is rough and prone to sticking is avoided; the dynamic balance of sodium carboxymethyl starch and magnesium stearate ensures the synergism of disintegration and lubrication, and completely avoids the problems of poor tablet hardness, slow disintegration and large weight difference of traditional Chinese medicine film-coated tablets.

The invention belongs to the field of refractory materials, and provides a light heat-insulating refractory brick and a preparation method thereof. The light heat-insulating refractory brick comprises particles, mixed powder and an additional binding agent, the particles comprise, by weight, 10-15 parts of expanded vermiculite and 30-45 parts of closed cell perlite, and the mixed powder comprises, by weight, 15-25 parts of spherical quartz powder and 5-15 parts of perlite dust collecting powder. The raw materials comprise, by weight, 5-10 parts of waste silica brick powder, 5-10 parts of siliceous pyrophyllite powder, 10-15 parts of Jiaozhou white clay, 5-15 parts of sodium montmorillonite powder and 5-15 parts of limonite powder; the additional binding agent comprises the following raw materials in parts by weight: 3-5 parts of binding slurry and 3-5 parts of pre-gelatinized starch. The refractory brick disclosed by the invention is a light heat-insulating refractory brick which is small in volume density, small in heat conductivity coefficient and capable of meeting the requirement of heat insulation in a high-temperature kiln at 900-1000 DEG C in normal-temperature compressive strength.

The invention relates to the technical field of flour food, in particular to a formula and a making method of a porous noodle product. Specifically, the invention provides the method for improving the porosity of the hollow fine dried noodles, and the method comprises the following steps: rolling a dough containing pregelatinized starch to obtain a dough sheet with the thickness of less than or equal to 1.0 mm, cutting the dough sheet into strips to obtain noodles with the width of more than two times of the thickness of the dough sheet, and preparing the hollow fine dried noodles, wherein the gelatinization degree of the pregelatinized starch is at least 30%; the content of the pregelatinized starch in the dough is at least 3wt% based on the total weight of the dry powder or the dry material required for preparing the dough. The fermented hollow fine dried noodles disclosed by the invention are attractive in appearance and high in porosity, and the cooking time is shortened.

An unsubstituted, crosslinked pregelatinized starch has a cold viscosity in a range of 500 cP to 3200 cP at neutral pH and 6 wt-% solids, a retrogradation enthalpy of 2.3 J / g or less at 1 week and 7 J / g or less at 4 weeks, and conclusion temperature of retrogradation of less than 75 °C. The starch may be prepared from waxy tapioca, waxy rice, waxy-sugary-2 corn mutant, short chain waxy potato, waxy wheat, high phosphorylated waxy starch, or a combination of any two or more thereof. The starch may be crosslinked. The starch may be used in food products, nutritional products, pharmaceutical products, personal care products, paper products, and the like. A method of making the starch includes mixing a native starch with water to form a slurry; adjusting pH of the slurry to alkaline; and mixing a crosslinking agent with the slurry to effect a crosslinking reaction.

The invention discloses a preparation method of high-substitution-degree V-type pre-gelatinized hydroxypropyl starch, and belongs to the technical field of starch modification. The preparation method comprises the following steps: (1) extruding starch and an ethanol water solution, drying and crushing to obtain extruded modified starch A; and (2) adding the extruded modified starch A into an ethanol solution, adjusting the pH value to be alkaline, adding epoxypropane for reaction, adjusting the pH value to be acidic, terminating the reaction, and then performing suction filtration, washing and drying to finally obtain the V-type pre-gelatinized hydroxypropyl starch. The preparation method comprises the following steps: firstly, carrying out alcohol-water extrusion treatment to obtain V-shaped pre-gelatinized starch which has a V-shaped single-spiral structure, has a large amount of exposed hydroxyl groups and is relatively high in reaction activity; and subsequently, an organic solvent method is adopted to carry out hydroxypropylation reaction, so that the reaction efficiency is improved, the product efficiency is improved, and the cost is reduced.

The present invention provides a dough composition containing the following (a) to (c):(a) grain flour and / or starch(b) pregelatinized grain flour and / or pregelatinized starch(c) a substance selected from fenugreek seeds, chia seeds, seaweed, yam, and agar, and a dough product containing the dough composition. Provided is also a method for producing the dough composition comprising adding water to a dry mix obtained by mixing component (a), component (b), and component (c) in a powder form, and further mixing the mixture.

The invention discloses slow-release fish bait and a preparation method thereof, and belongs to the technical field of fish feed. Comprising the following steps: mixing soybean meal powder and cottonseed meal powder to obtain floating bait; mixing the fermented blood powder, the corn protein powder and the pre-gelatinized starch to obtain mixed bait; mixing the food calling microcapsules, hydroxypropyl methyl cellulose, soya bean lecithin and sterile water to obtain a food calling slow-release coating; wrapping 1 part by mass of floating bait with 2 parts by mass of mixed bait, and rounding to obtain basic fish bait; uniformly spraying the food-calling slow-release coating on the surface of the basic fish bait, and drying to obtain the slow-release fish bait. According to the invention, the dissolution time of the fish bait is prolonged, so that the dosage of the fish bait during bait casting is reduced.

The invention relates to the technical field of silicon carbide ceramics, in particular to an in-situ induced low-temperature eutectic silicon carbide porous ceramic and a preparation method thereof. The material is prepared by mixing and sintering the following materials: silicon carbide, a synergistic sintering system, a dispersing agent, a plasticizer and water, wherein the synergistic sintering system comprises the following components: pregelatinized starch, a silicate mineral material, aluminum oxide, calcium carbonate, glass powder and rare earth oxide; the pregelatinized starch is adopted as an adhesive, the thermal decomposition behavior of the pregelatinized starch and the chemical reaction activity of the glass powder and the calcium carbonate form synergy in the process, seamless connection of the whole process from the room temperature to the sintering temperature is achieved, the sintering temperature is greatly reduced, meanwhile, the glue discharging step is omitted, and the silicon carbide porous ceramic product with good performance and few defects is obtained.

The invention discloses microcapsule eel initial feed and a preparation method thereof, and relates to the technical field of biology. The feed comprises the following components in percentage by mass: 20-30% of fish meal, 5-15% of euphausia superba powder, 5-15% of yolk powder, 10-20% of fermented soybean meal, 2-8% of algae powder, 5-10% of microcrystalline cellulose, 3-8% of maltodextrin, 5-10% of pre-gelatinized starch, 2-5% of soybean lecithin powder, 2-5% of fish oil or shrimp oil, 1-3% of a vitamin premix, 1-3% of a mineral premix and 0.5-2% of probiotics, according to the device, raw materials can be mixed, dehydrated, formed and trimmed in sequence from top to bottom, the process flow of bait processing is effectively shortened, the situation that the bait raw materials need to be transferred many times in the bait production process, and consequently the production and forming efficiency of bait is reduced is avoided, and the overall smoothness of the center forming barrel is effectively improved.

The present disclosure provides pregelatinized pea starch (PPS) compositions and processes for producing pregelatinized pea starch. The PPS of the invention has several distinguishing attributes, including relatively alkaline pH when dissolved in water, high water absorption index water solubility index relative to known pregelatinized pea starches. The PPS of the invention is also highly viscous at low temperature without heating, providing for abundant uses in the food and beverage industry.

The invention discloses medicinal pregelatinized starch as well as a preparation method and application thereof, and the preparation method of the medicinal pregelatinized starch comprises the following steps: adding starch into a salt solution with the mass fraction of 0.1-0.8%, and stirring at the temperature of 75-95 DEG C to form uniform starch slurry; putting the obtained starch slurry into a grinding device, adding polyhydric alcohol, and grinding for 30-50 minutes; putting the obtained product into an extruder, controlling the temperature of a screw rod, and extruding at a certain temperature; and cooling and drying the extruded product, and cutting and crushing the extruded product by using a granulator to obtain the pregelatinized starch. The invention provides a novel preparation method of pregelatinized starch, which comprises the following steps: dissolving starch by using a salt solution, mixing, grinding and activating by using polyhydric alcohols, and selecting different salt solutions and types of polyhydric alcohols, so that the viscosity of the prepared pregelatinized starch is controllable, and meanwhile, a preparation method of the pregelatinized starch with lower viscosity is provided; a new thought is provided for the preparation of the pregelatinized starch.

The invention discloses an ibuprofen composition suspension and a preparation method thereof, the preparation method comprises the following steps: adding purified water accounting for 60% of the prescription dosage into a liquid preparation tank, slowly adding pregelatinized starch in a stirring state, and stirring for more than or equal to 10 minutes after the addition is finished; heating is started, so that the pregelatinized starch is gelatinized; adding a prescription amount of cane sugar into the liquid preparation tank, and stirring for 10 minutes to completely dissolve the cane sugar; starting a tank body for cooling, when the temperature of the liquid medicine is cooled to be less than or equal to 50 DEG C, slowly adding xanthan gum into the stirring tank through a 40-mesh screen under a stirring state, after the xanthan gum is added, continuously stirring for more than or equal to 30 minutes, starting self-circulation to pass through a 5mm screen for 30 minutes, and then replacing a 20-mesh screen to continuously and circularly stir; the xanthan gum and the raw material medicine are added into the stirring tank in a sieving mode, then the liquid medicine is subjected to continuous circulating sieving to ensure that the xanthan gum is completely swelled and the raw material medicine is uniformly dispersed, finally, the content uniformity RSD% of the liquid medicine at different positions is within 2%, and the uniformity of the liquid medicine is good; the feeding process is simplified to a certain extent, the use of equipment is reduced, the cleanness is realized, and the production efficiency is improved.

Provided is a pregelatinized starch having a gelatinization degree of 13.0 or more and an advancing distance of 3.30 cm or less.　The gelatinization degree is a ratio Wf / Ws of a gel generation quantity Wf when the pregelatinized starch is mixed with 100 times the mass thereof of water and a quantity Ws of the pregelatinized starch before mixing, and the advancing distance is the movement distance of 10 g of a gel obtained by mixing water and the pregelatinized starch in a manner in which the moisture content of the obtained gel becomes 90.9 mass%.　The present invention further provides a heated-dough food product using the pregelatinized starch and a bakery food product obtained by heating a batter including the pregelatinized starch.

The invention discloses a type II coal dust suppressant and a preparation method and application thereof. The dust suppressant comprises, by weight, 5-20 parts of a crusting agent, 5-20 parts of a binder, 2-10 parts of a toughening agent, 2-10 parts of a reinforcing agent, 1-3 parts of a penetrant, and the balance is pregelatinized starch. The invention adopts a toughening agent and a reinforcing agent to improve the toughness and strength of the type II coal transportation dust suppressant, solves the problem that the dust suppression effect of railway coal transportation is poor due to a large slope and high wind speed, and has obvious economic benefits, social benefits and environmental benefits.

The present invention provides an environment-friendly mineral powder dust suppressant and a preparation method thereof, comprising: performing composite modification on guar gum and / or linseed gum to introduce sulfoethyl groups and carboxymethyl groups; mixing the composite-modified guar gum and / or linseed gum with pregelatinized starch or not mixing with pregelatinized starch to obtain the environment-friendly mineral powder dust suppressant. In the present invention, guar gum and / or linseed gum react in ethanol, with good reaction efficiency and uniformity. Sulfoethyl groups and carboxymethyl groups are introduced onto the molecules of guar gum or linseed gum, increasing its viscosity and improving the water solubility rate, the strength and toughness after film formation. Using the composite-modified guar gum and linseed gum as film-forming agents and binders solves the problems of the complex preparation method of the currently used mineral powder dust suppressant, the poor strength and toughness of the crust layer during use, difficult natural degradation, environmental pollution, etc., solves the pollution problems generated during the traditional mineral powder dust suppression process, and improves and enhances the ecological environment.

The invention provides a composition for improving the thrombolysis capacity of a human body, a preparation method and application thereof.The composition is prepared from, by weight, 5-30 parts of earthworm protein, 30-120 parts of hippophae rhamnoides total flavone extract, 50-150 parts of silymarin extract, 20-80 parts of maltodextrin and 15-60 parts of pregelatinized starch, the earthworm protein activates a fibrinolytic system to promote t-PA to release and dissolve thrombus, and the hippophae rhamnoides total flavone extract activates the fibrinolytic system to promote t-PA to release and dissolve thrombus; the hippophae rhamnoides total flavonoids regulate the ratio of PGI2 / TXA2 to inhibit platelet aggregation and reduce blood fat, the silymarin protects the liver function to enhance LDL-C metabolism clearing, the hippophae rhamnoides total flavonoids, the silymarin and the hippophae rhamnoides total flavonoids cooperate to form a thrombolysis-antithrombosis-metabolism regulation three-dimensional intervention system, a whole-course low-temperature mixing direct tabletting process is adopted

The invention discloses a fluvoxamine maleate tablet and a preparation method thereof, the fluvoxamine maleate tablet is prepared from the following raw materials in parts by mass: 45 to 55 parts of fluvoxamine maleate, 145 to 155 parts of mannitol, 38 to 42 parts of corn starch, 3 to 8 parts of pregelatinized starch, 0.5 to 1 part of colloidal silicon dioxide and 1.5 to 2 parts of sodium stearyl fumarate, and corn starch accounting for 4.4-5.6% of the total mass is used as a starch slurry raw material. By adopting a wet granulation process, the granules are good in flowability and compressibility, qualified in quality, stable in property, high in release speed and high in solubility, and the dissolution rate of the granules in different pH environments and water media for 15 minutes is greater than 85%. Compared with the traditional antidepressant drug, the fluvoxamine maleate and the pseudoadrenaline have low efficacy and are not easy to cause excitement, hidrosis and other symptoms; the anti-choline and anti-histamine efficacy is low, and the phenomena of weight gain, drowsiness and the like are rarely caused; the interaction among the medicines is small, and the drug combination is facilitated.

The application relates to the technical field of medicine preparation, and particularly discloses a levodopa-benserazide tablet, a preparation method and application thereof, which comprises levodopa granules, benserazide hydrochloride granules, cross-linked polyvinylpyrrolidone and magnesium stearate; the levodopa granules are composed of levodopa, anhydrous calcium hydrogen phosphate, pregelatinized starch, cross-linked polyvinylpyrrolidone, red iron oxide and sodium docusate; and the benserazide hydrochloride granules are composed of benserazide hydrochloride, mannitol, microcrystalline cellulose, colloidal silicon dioxide, red iron oxide and ethyl cellulose. The related substances and the friability of the levodopa-benserazide tablet meet the production requirements, the stability is high, and the tablet is suitable for large-scale production.

The invention relates to the field of herbal fragrant moxibustion, in particular to an edible and medicinal inhalation type atomized moxibustion material and a preparation method thereof. The invention relates to an edible and medicinal inhalation type moxibustion atomized material which comprises the following raw materials in parts by weight: 8-11 parts of astragalus membranaceus, 5-6 parts of pericarpium citri reticulatae, 6-10 parts of radix puerariae, 10-12 parts of agilawood, 8-12 parts of poria cocos, 7-9 parts of radix ophiopogonis, 20-25 parts of a carrier, 2-3 parts of an adhesive and the balance of water, wherein the total weight part is 100; the carrier comprises at least one of lotus leaves and loquat leaves; the adhesive comprises at least one of guar gum and pregelatinized starch. According to the application, the medicine taking astragalus membranaceus as a main medicine is prepared into the edible and medicinal inhalation type moxibustion atomized material, and the medicine can be absorbed in an aerosol inhalation mode during use. And after the moxibustion atomized material is prepared, the medicine medium has higher penetrability, can reach blood capillaries of a human body more easily, and has a stronger conditioning effect.

A novel compound complex that has no side effects on a liver and is used to alleviate the toxicity of an acetaminophen (APAP) drug to the liver. The composition of the compound consists of (a) acetaminophen in a pharmaceutically effective amount and (b) a commonly-used safe and pharmaceutically acceptable excipient that can be combined with one or more of two drugs to reduce the toxicity of a drug metabolized by the hepatic enzyme CYP2E1 in the liver.The compound is selected from the following group: Tween 20, microcrystalline cellulose, dicalcium phosphate, polyoxyethylene 23 lauryl ether, saccharin, mannitol, polyoxyethylene alkyl ether, sucralose, pyrrolidone, sodium starch glycolate, S100 acrylic resin, sodium carboxymethylcellulose, polyoxyethylene polyoxyethylene, menthol, low-substituted propylcellulose hydrocarbon, pregelatinized starch, Dextrates NF hydrate, citric acid, polyoxyethylene castor oil, colloidal silicon, aliphatic polyethylene glycol monostearate ester, sorbic acid, lemon oil, hydroxypropylcellulose, sorbitol, acesulfame potassium, hypromellose phthalate, lactose monohydrate, maltodextrin, Brij 58, Brij 76, Tween 80, Tween 40, PEG 400, Peg 4000, PEG 2000, and the like, so as to reduce the side effects caused by acetaminophen on the liver.

The invention discloses an ebastine tablet and a preparation method thereof. The ebastine tablet is prepared from the following raw material components in parts by weight: 7 to 10 parts of ebastine, 13 to 22 parts of microcrystalline cellulose, 66 to 90 parts of lactose, 3 to 6.5 parts of pregelatinized starch, 4 to 6.5 parts of croscarmellose sodium and 1.0 to 2.6 parts of magnesium stearate. A wet granulation process is adopted, granules prepared by the process are good in flowability and compressibility, qualified in quality and stable in property, and the medicine is a pH dependent medicine and cannot reach tank leakage conditions in media with the pH of 4.5, water and pH of 6.8. In combination with biological pharmacy and pharmacokinetic data of drugs, ebastine is a BCS2 compound, the ebastine can reach a peak in vivo quickly, the peak time is about 2 hours, and the peak time of a main metabolite carristine of the ebastine in vivo is 4.5-6 hours.

The invention discloses dust-free putty which is prepared from the following components in parts by mass: 985 to 1000 parts of heavy calcium powder, 2 to 3 parts of pregelatinized starch, 3.2 to 3.5 parts of cellulose ether, 1.4 to 2 parts of polyvinyl alcohol, 8 to 10 parts of bentonite, 0.4 to 0.6 part of starch ether and 3 to 5 parts of dust suppressant. The invention also discloses a preparation method thereof. By adding the specific pregelatinized starch, the cellulose ether, the polyvinyl alcohol, the bentonite, the starch ether and the mineral oil into the heavy calcium carbonate powder, the obtained putty has good constructability, bonding strength and stability, meanwhile, the putty is endowed with certain thixotropy and water-retaining property, the tensile bonding strength and the construction performance of the putty are guaranteed, and the putty has the advantages of being simple in preparation process and low in cost. And meanwhile, a good dust inhibition effect is achieved.

This invention discloses a flocculant for treating fracturing flowback fluid, relating to the field of oilfield wastewater treatment technology. The flocculant comprises modified starch and organic acid. The preparation method of the modified starch includes the following steps: reacting allyl alcohol glycidyl ether with 1,4,7-trimethyldiethylenetriamine; after the reaction, separating and purifying to obtain an intermediate product; taking the intermediate product and dissolving it, adding an alkyl halide to perform a quaternization reaction; after the reaction, separating and purifying to obtain a cationic monomer; taking pregelatinized starch and dispersing it in water, then adding the cationic monomer, acrylamide, and an initiator to perform free radical polymerization; after the reaction, drying to obtain the final product. The flocculant for treating fracturing flowback fluid provided by this invention not only has strong salt resistance, making it suitable for the high-salt environment of fracturing flowback fluid, but also effectively removes oil, turbidity, color, and suspended solids from the fracturing flowback fluid, and has a strong COD removal capacity.

The invention relates to a preparation method of a complete puffed compound feed for trachinotus ovatus. Belongs to the technical field of expanded feed for marine fish. The pregelatinized starch is used for lowering the temperature of the puffing and tempering section, and the water vapor is used for adjusting the initial water content to 19-23%, so that the high-temperature inactivation is reduced; the passing time of the screw section is controlled, and mechanical shearing and heat accumulation are reduced; the instant high-temperature pressure of the puffing section is suddenly reduced to form a porous structure, and the dissolution rate control of crude protein and crude fat is promoted by matching with the proper proportion of the pre-gelatinized corn starch and the cassava starch and the tackifying effect of the poultry eggs; probiotics and metabolites thereof in the fermentation liquor are reserved to the maximum extent; the viable count of probiotics in the puffed granules is remarkably increased and is far higher than that of conventional high-temperature granulation; butyric acid, lactic acid, antibacterial peptide and the like generated by fermentation are blended into the feed, so that growth of pathogenic bacteria is inhibited, and intestinal health of the trachinotus ovatus is enhanced.