174 results about "Tapioca starch" patented technology

The invention discloses environment-friendly cassava cat litter and a preparation method thereof, and belongs to the technical field of pet supplies, and the environment-friendly cassava cat litter is prepared from the following raw materials in parts by weight: 45-55 parts of cassava starch, 20-30 parts of cassava peel, 8-15 parts of corn starch, 8-12 parts of water hyacinth fiber, 5-10 parts of bamboo fiber, 2-4 parts of propolis and 1.5-3.0 parts of mussel mucin. The raw materials are subjected to step-by-step synergistic enzymolysis and step-by-step fermentation to obtain the environment-friendly cassava cat litter. According to the mode, natural raw materials are combined, and the preparation process of step-by-step enzymolysis and step-by-step fermentation is adopted, so that the antibacterial performance and water absorption performance of the cat litter are improved, the defecation comfort and cleanliness of pet cats are improved, sanitation and health of pets and family environments are guaranteed, meanwhile, the product can be completely degraded in the natural environment after being used, and the environment is protected. The cat litter does not generate permanent solid waste like bentonite and silica gel cat litter, and is very environment-friendly.

The invention belongs to the technical field of gel. The invention provides high-strength starch sodium octenylsuccinate gel and a preparation method thereof.The preparation method comprises the steps that S1, corn and cassava starch are mixed according to the mass ratio of 1: (4.4-4.6) to obtain a mixture, and then the mixture and soft water are dispersed according to the mass ratio of 1: 1.1 to obtain starch milk; s2, adjusting the pH value of the starch milk to 9.0 by using a sodium hydroxide solution, then adding octenyl succinic anhydride at 25 DEG C, then adding sucrose ester and pectin, neutralizing the pH value to 4.5 by using an HC1 solution, and carrying out suction filtration, washing and crushing to obtain starch sodium octenyl succinate powder; and S3, gelatinizing the starch sodium octenylsuccinate powder, and storing the gelatinized starch sodium octenylsuccinate powder at low temperature to obtain the high-strength starch sodium octenylsuccinate gel. According to the invention, by reducing the ratio of corn starch to cassava starch, the viscosity of the prepared starch sodium octenylsuccinate is further improved while a lower gelatinization temperature is ensured.

The invention discloses a preparation method of a nano embedding material based on a low-temperature superfine grinding technology, and belongs to the technical field of modified nano materials. The method comprises the following steps: cleaning and slicing fresh beautiful millettia root and stem, performing programmed liquid nitrogen freezing, and performing jet milling to obtain nano powder; the preparation method comprises the following steps: taking anionic polysaccharide, neutral polysaccharide nanoparticles, nano-modified cassava starch and deionized water, magnetically stirring, carrying out ultrasonic treatment, and mixing for 30-45 minutes; mixing the wall material solution with the nano-powder, performing ultrasonic treatment to form a coating solution, adding calcium chloride and Tween 80, and stirring; and spraying a magnesium chloride solution at the voltage of 40-60kV and the flow rate of 0.5-1.5 mL / h, stirring, mixing with a chitosan solution according to the mass ratio of 1: (2-4), adjusting the pH value, stirring, and freeze-drying to obtain the product. The millettia specisoa champ embedding method retains the active ingredients of millettia specisoa champ, improves the embedding efficiency by 85-96%, is stable, controls release, and is suitable for health care products and drug carriers.

The invention relates to an instant composition with a long-acting oral health-care function for dogs and cats as well as a preparation method and application of the instant composition, and belongs to the technical field of pet food and pet oral care. The composition comprises 20%-30% of whey protein powder, 10%-20% of hydrolyzed gelatin, 1%-3% of low-molecular-weight chitin saccharide gum, 1%-2% of modified cassava starch, 2%-5% of sodium alginate, 1%-3% of fructo-oligosaccharide, 0.03%-0.08% of lysozyme, 0.03%-0.08% of tea polyphenol, 0.05%-0.15% of zinc gluconate, 0.05%-0.1% of persimmon tannin, 3%-5% of tuna hydrolysate, 4%-6% of whole goat milk powder, 2%-4% of skim yoghurt powder and the balance water. The added active ingredients have long-acting slow-release and continuous effects in the formula, oral pathogenic bacteria can be effectively inhibited, dental plaque and dental calculus formation can be reduced, halitosis can be lastingly relieved, and the toothpaste has good market competitiveness.

The invention belongs to the technical field of oil-proof coatings, and discloses a starch-based oil-proof coating as well as a preparation method and application thereof. The method comprises the following steps: 1) reacting cassava starch with sodium periodate under the condition that the pH is 2-4, centrifugally washing to be neutral, and drying to obtain dialdehyde starch; 2) dispersing dialdehyde starch in water, and then performing gelatinization treatment to obtain a dialdehyde starch solution; dissolving chitosan in an acetic acid solution to obtain a chitosan solution; and 3) mixing the chitosan solution with the dialdehyde starch solution, adjusting the pH value to be acidic, and reacting to obtain the starch-based oil-proof coating. The method is simple, green and environment-friendly; the prepared coating is safe and biodegradable, has excellent oil-proof performance, and improves the tensile strength and tear strength of the paper.

The invention belongs to the field of biomass-based functional materials, relates to a difunctional coating based on enzymolysis modified cassava starch as well as a preparation method and application of the difunctional coating, and innovatively solves the technical problem that a single coating gives consideration to oil prevention and water absorption through a synergistic technical path of pretreatment and composite enzymolysis. The core mechanism is as follows: the starch particle structure is destroyed through pretreatment, and the degradation degree of starch is accurately controlled through the synergistic effect of alpha-amylase and saccharifying enzyme, so that an unexpected technical effect is achieved, and an enzymolysis product with a film-forming skeleton (medium molecular weight dextrin) and a hydrophilic unit (small molecular saccharide) is formed; meanwhile, a compact and continuous network structure can be formed by a film-forming framework, and grease permeation is blocked; and the hydrophilic unit endows the coating with a rapid capillary water absorption effect.

The present application relates to the technical field of degradable packaging. Particularly disclosed are a degradable food container and a preparation method therefor. The degradable food container comprises a paper food container base body and a degradable coating applied on the paper food container base body, wherein the degradable coating is prepared from the following raw materials in parts by weight: 40-50 parts of polylactic acid; 10-15 parts of polybutylene succinate; 15-20 parts of polyglycolic acid; 10-20 parts of cassava starch; 5-8 parts of an external additive; 1.2-1.8 parts of montmorillonite; 0.2-0.8 parts of boron nitride nanotubes; and 1.5-2.5 parts of modified hemp fibers. The preparation method therefor comprises: heating polylactic acid, polybutylene succinate and polyglycolic acid to a molten state, then adding cassava starch and an external additive thereto, finally adding montmorillonite, boron nitride nanotubes and modified hemp fibers thereto, performing extrusion granulation, melting and then coating same on the surface of the paper food container base body, cooling same, and then cutting and forming same into a container to obtain the degradable food container. The degradable food container of the present application can exhibit excellent temperature change resistance when being subjected to temperature change caused by an external environment.

The invention discloses a preparation technology of an animal protein product capable of improving texture uniformity, and belongs to the technical field of animal protein product processing. The process comprises the following steps: S1, putting animal meat paste into a chopping and mixing pot, keeping the temperature of the chopping and mixing pot to be less than or equal to 5 DEG C, mixing and chopping the animal meat paste with 60-70% of formula amount of ice water, and chopping and mixing at 1200rpm for 3-5 minutes to form a protein continuous phase so as to obtain a fine meat paste base; s2, cassava starch and ice water with the amount being 20%-30% of the formula amount are premixed into turbid liquid, the turbid liquid is added into the fine and smooth meat paste base to be chopped and mixed at the speed of 800 rpm for 2-3 minutes, the protein continuous phase is filled with the cassava starch, and a starch filling phase is obtained; and S3, premixing the soybean protein with the remaining formula amount of ice water, adding the mixture obtained in the step S2, and chopping at 500rpm for 1-2 minutes to obtain the meat paste with uniform texture. The method can improve the texture uniformity of the animal protein product.

The invention relates to high-stability amoxicillin powder for livestock. 100 kg of the amoxicillin powder mainly comprises the following raw materials by weight: 10 to 30 kg of amoxicillin, 2.5 to 7.5 kg of potassium clavulanate, 0.6 to 0.7 kg of a hydroxypropyl-beta-cyclodextrin-baicalin and chlorogenic acid compound inclusion body, 1.8 to 2.4 kg of citric acid and calcium carbonate controlled release microspheres, 23.7 to 45 kg of oat beta-glucan, 18 to 25 kg of pre-gelatinized cassava starch, 3 to 4 kg of mannitol, 8 to 12.7 kg of silanized microcrystalline cellulose, and the balance of water. The coating comprises the following components by weight: 0.8 to 1.2 kg of nano silicon dioxide, 2.0 to 2.5 kg of hydroxypropyl methylcellulose and 0.6 to 1.0 kg of zinc diricinoleate. The powder is dried at low temperature, so that the degradation rate of beta-lactam rings is reduced, the stability of amoxicillin is improved, and the bioavailability of the medicine is improved.

The invention relates to the technical field of food, in particular to an instant meat ball capable of being brewed and a production method thereof, and the instant meat ball comprises the following raw materials in percentage by mass: 95.0-98.5% of lean meat; 0.5%-3.0% of ice water; 0.5%-2.0% of crisp garlic bulbs; 0.2% to 1.5% of cassava starch; 0.001% to 0.01% of a colloid; and the balance of seasonings. The colloid is a mixture of konjac gum and xanthan gum; the instant meat ball recovers the elastic and tender taste after being brewed with boiling water for 1-3 minutes and can be directly eaten, low-temperature pulping control is carried out, the material temperature is strictly controlled to be 0-10 DEG C in the pulping process, advanced denaturation of myosin caused by heat generated by friction can be effectively inhibited in the low-temperature environment, and it is ensured that muscle protein is fully dissolved out and a compact gel network is formed; and meanwhile, the low temperature is beneficial to protecting long molecular chains of the konjac glucomannan and the xanthan gum from being degraded by excessive mechanical shearing force, so that the konjac glucomannan and the xanthan gum can play a maximum synergistic gelation role in subsequent processing.

The present disclosure discloses a dust suppression material with a crosslinked network structure and its preparation method. The dust suppression material comprises: 16-20 parts of the cassava starch, 0.2-0.6 parts of the polyvinyl alcohol, 0.1-0.5 parts of the carboxymethyl cellulose, 0.1-0.5 parts of the crosslinking agent, 0.24-0.28 parts of the oxidizing agent, 0.4-0.48 parts of the catalyst, 1.8-2.6 parts of the gelatinizing agent, 0.1-0.3 parts of the water retaining agent, 0.8-1.2 parts of the wetting agent, and the balance is distilled water. The dust suppressant can wet and penetrate into the gaps of coal dust particles, and water molecules form hydrogen bonds with hydrophilic groups in the crosslinked network structure, firmly adsorbed on the network structure, thereby improving the water retention performance of the solidified layer.

The application discloses a method for treating cassava starch wastewater by using a microalgae-fungus symbiotic system, and belongs to the technical field of wastewater biological treatment. The method for treating cassava starch wastewater comprises the following steps: pre-culturing oil-rich neochloris oleoabundans to obtain oil-rich neochloris oleoabundans liquid; pre-culturing aspergillus fumigatus to obtain aspergillus fumigatus spores; mixing the oil-rich neochloris oleoabundans liquid, the aspergillus fumigatus spores and filtered and sterilized cassava starch wastewater, and carrying out shaking bed culture to obtain microalgae-fungus biological balls; carrying out sedimentation and sand filtration treatment on the cassava starch wastewater to obtain pretreated cassava starch wastewater; and adding the microalgae-fungus biological balls into the pretreated cassava starch wastewater, carrying out biological treatment in a photobioreactor, and killing algae bacteria to obtain treated cassava starch wastewater. The method has the advantages of good treatment effect, high economic benefit, low cost and low carbon emission, and aims to solve the problems and defects in the prior art.

This application relates to the field of pesticide compositions, specifically disclosing a water-dispersible granule of chlorpyrifos·acetamiprid and its preparation method, comprising the following raw materials in parts by weight: chlorpyrifos 40-50 parts; acetamiprid 15-25 parts; dispersant 8-12 parts; emulsifier 3-7 parts; synergist 0.5-1 part; mineral oil 3-5 parts; anti-caking agent 3-5.5 parts; cassava starch 2-8 parts; activated carbon powder 5.5-8 parts. The preparation method includes the following steps: S1, mixing the raw materials evenly according to the specified ratio; S2, granulating after air jet milling, drying, and sieving to obtain the water-dispersible granule. This application has the effect of inhibiting the migration of acetamiprid in the soil and reducing pesticide pollution of water resources.

The present application relates to starch production technical field, especially disclose a kind of green preparation method for modified starch for replacing hydroxypropyl distarch phosphate.The green preparation method, cassava starch is used as raw material, specifically includes the following steps: (1) cassava starch is mixed with water uniformly, and starch suspension is prepared;(2) adding alpha-amylase to starch suspension for glycosidic bond enzymolysis, then passivate enzyme activity;(3) the enzymatic hydrolysate is used to hexose oxidase and oligomeric glucan is subjected to lactonization reaction, then passivate enzyme activity;(4) the final enzymatic hydrolysate is centrifuged, washed with water, the precipitate is freeze-dried, and enzyme modified cassava starch is obtained.The paste viscosity, freeze-thaw stability, shear resistance, anti-aging and other chemical properties of the enzyme modified cassava starch prepared by the present application are close to or better than hydroxypropyl distarch phosphate, and the preparation process is simple, short cycle, green and safe, low in production cost, simple in equipment, suitable for industrial production, and safe and pollution-free during production.

The invention provides a graphitized carburant and a preparation method thereof, and relates to the technical field of carburant preparation. The graphitization carburant is prepared from pretreated petroleum coke, purified graphite electrode waste, wood charcoal, carboxymethyl cellulose sodium and modified starch, wherein the pretreated petroleum coke is obtained by soaking petroleum coke in alkali liquor, cleaning with ethanol, drying, filling oxygen under the pressure of 3-5 Mpa for high-pressure treatment and calcining; the modified starch is obtained by gelatinizing cassava starch, performing microwave shaping and crushing. According to the method, the defects in the prior art are overcome, the purity of the carburant can be effectively guaranteed, meanwhile, the recarburization effect of the carburant is further improved, and the economic benefit of overall production is improved.

The invention relates to a biodegradable heat-sealing film and a preparation method thereof, and belongs to the technical field of heat-sealing films, the biodegradable heat-sealing film is prepared from the following raw materials by weight: 45-55 parts of polylactic acid, 6-12 parts of modified tapioca flour, 5-12 parts of toughening fiber, 8-18 parts of glycerin, 0.5-1.5 parts of sorbitol, 3-5 parts of citric acid, and 4-8 parts of stearic acid; wherein the modified tapioca flour is obtained by performing heat-moisture treatment and oxidation treatment on tapioca starch, and the toughened fibers are prepared by performing blasting and purification treatment on plants serving as raw materials. The biodegradable heat-sealing film is prepared through the synergistic effect of the polylactic acid, the modified tapioca flour and the plant-based toughening fibers in a specific proportion, and the tapioca flour is modified through damp heat and oxidation, so that the compatibility and degradation performance of the tapioca flour and the polylactic acid are improved; the toughening fiber is obtained by steam explosion and purification of various plants, and the addition of the toughening fiber can provide an anchor point for the biodegradable heat-sealing film, so that the biodegradable heat-sealing film is not easy to generate a longer fracture when being pulled.

The invention discloses composite shredded bean curd and a preparation method thereof, and belongs to the field of food processing.The composite shredded bean curd comprises basic ingredients of shredded bean curd, cassava starch and corn starch.By adding the cassava starch and the corn starch, the texture and sensory quality of the shredded bean curd product are optimized, and the quality and flavor of the shredded bean curd product are improved; the fresh-keeping time is prolonged so as to reduce the storage logistics cost, the freeze-thaw cycle stability is enhanced, the texture deterioration and water loss are reduced, and the requirements of consumers on green and safe foods are met.

An emulsified composition containing methyl cellulose, a starch material, edible oil or fat, and an emulsifying material containing protein. The starch material is a component (A) which is a powdery material satisfying (1) a starch content is 75% by mass or more, (2) 3-45% by mass of a low molecular weight starch (a peak molecular weight of equal to or more than 3×103 and equal to or less than 5×104) including 5% by mass or more of an amylose content, (3) a degree of swelling in cold water at 25° C. is 5-20 and (4) a content under a sieve with openings of 3.35 mm and on a sieve with openings of 0.038 mm is 60-100% by mass; and / or a component (B) a raw material starch of which is a cornstarch, a tapioca starch, a wheat starch, and / or a pea starch.

The invention discloses coconut milk yoghourt and a preparation method thereof, and belongs to the technical field of food processing. The method comprises the following steps: mixing cassava starch and white granulated sugar, stirring, adding coconut residues, and stirring to obtain a first material; stirring the diluted coconut milk to obtain a second material; mixing the first material and the second material, carrying out wall breaking and pulping treatment, and homogenizing; and sterilizing, cooling and fermenting. The coconut processing by-product coconut residue is introduced into a coconut milk yoghourt system, and natural coconut flavor substances in the coconut residue, dietary fibers and cassava starch form a synergistic interaction effect. The obtained product is rich and mellow in coconut fragrance, the microstructure forms a compact three-dimensional network structure, the firmness and the stability are remarkably improved, and the TSI value is as low as 0.98; and meanwhile, the method realizes the simplification of an ingredient table, clean labeling production and high-value utilization of the coconut residues, has the effects of flavor upgrading and texture improvement, and has extremely high industrial application value.

The invention relates to a lotus root starch pearl powder ball and a making method thereof. The lotus root starch pearl powder ball comprises the following components in parts by weight: 10-35 parts of lotus root starch, 0-15 parts of cassava starch, 5-10 parts of acetylated distarch phosphate, 0-10 parts of white granulated sugar, 0.1-0.5 part of guar gum, 0.1-0.3 part of sodium polyacrylate, 30-45 parts of water, 0-15 parts of soft stuffing and 30-35 parts of sweet water. The preparation method has the advantages that lotus root starch is used as a main raw material, and the instant pearl balls which can be repeatedly frozen and thawed and have better normal-temperature storage stability after being reheated are provided.

The invention discloses a carboxymethyl starch hydrogel adsorbent capable of efficiently adsorbing methylene blue and a preparation method of the carboxymethyl starch hydrogel adsorbent. The preparation method comprises the following steps: firstly, gelatinizing cassava starch serving as a raw material in an alkaline urea solution at a low temperature, crosslinking by utilizing epoxy chloropropane, and performing freeze thawing treatment to construct a stable three-dimensional network hydrogel skeleton; then, in an ethanol water solution system, carrying out alkalization and etherification reaction on the gel skeleton, and introducing a carboxymethyl group in situ; according to the method, an innovative strategy of first gelation and then carboxymethylation is adopted, through the space confinement effect of a cross-linked network, the technical problem that high-substitution-degree carboxymethyl starch is easy to dissolve is successfully solved, the substitution degree of the prepared adsorbent reaches up to 1.43, and the prepared adsorbent is insoluble in water and has excellent swelling resistance and mechanical strength. The adsorbent is high in methylene blue adsorption capacity, high in adsorption rate and stable in performance within the pH range of 4-11. The method is simple in process, low in cost and easy for large-scale production, and has a wide application prospect in the field of water treatment.

The invention relates to the technical field of leavening agents, and discloses a food composite leavening agent, which comprises the following components by mass: 25-30 parts of ammonium bicarbonate; 15 to 23 parts of microencapsulated ammonium citrate; 8 to 16 parts of sodium pyrophosphate; 5 to 9.5 parts of L-potassium hydrogen tartrate; 13 to 17 parts of trehalose; 0.5 to 1.3 parts of surface modified nano silicon dioxide; and 10 to 17 parts of hydroxypropylated cassava starch. The microencapsulated ammonium citrate is formed by coating beta-cyclodextrin, and the thickness of an embedding layer is 16-20 [mu] m. The multi-layer microcapsule structure is constructed by carrying out gradient embedding on ammonium citrate through beta-cyclodextrin, so that staged release of gas production substances is realized. According to the structure, different temperature intervals are accurately matched in the baking process, it is guaranteed that the gas production rate is synchronous with the dough expansion requirement, and the problem of excessive expansion or insufficient gas production caused by concentrated release in the traditional technology is solved.

The present application relates to the technical field of starch coating, in particular to a preparation method of structured starch coating liquid with oil-proof and moisture-absorbing dual functions. The method comprises the following steps: firstly, performing mild acidolysis or selective oxidation pretreatment on cassava starch; then, preparing starch milk by using the pretreated starch, and performing synergistic enzymolysis on the starch milk under mild conditions by using a composite enzyme composed of alpha-amylase and glucoamylase in a specific ratio; after the enzymolysis, performing enzyme inactivation treatment, and then adding a bio-based crosslinking agent for compounding. The prepared coating has a specific bimodal distribution structure of starch derivative molecular weight, which is a key to realize function balance. After the coating liquid is coated on a substrate such as paper and dried and solidified, the formed coating not only has excellent oil-proof performance, but also exhibits good water vapor absorption capacity. The raw materials of the present application are green and the process is environmentally friendly, and the prepared multifunctional coating can be effectively applied to the fields of food packaging, medical protection and other fields which need to resist oil and regulate humidity at the same time.

The application provides application of a modified oxidized polyethylene wax dispersion liquid in starch aging prevention, is used for cooking of raw starch, can significantly reduce the 325 mesh residue of starch paste, improves the cleanliness of the paper machine sizing system, reduces the generation of coating marks and other paper diseases; meanwhile, the viscosity stability of the starch paste is obviously improved, and the aging performance is improved. The starch paste can be used in the papermaking industry, and the tapioca starch can be replaced in a large proportion, and the application direction is widened.

The invention discloses a doxazosin mesylate sustained-release tablet and a preparation process thereof, and relates to the technical field of doxazosin mesylate sustained-release tablets.The sustained-release tablet comprises a double-layer tablet core composed of a first sustained-release layer and a second sustained-release layer; the double-layer tablet core is prepared from the following components in parts by mass: a first slow-release layer and a second slow-release layer; the first slow-release layer is prepared from the following components in parts by mass: 2.4 parts of chitosan-TPP modified doxazosin mesylate, 10 to 12.5 parts of citric acid-cassava starch, 12.5 to 15 parts of magnesium aluminum silicate-cassava starch, 40 to 60 parts of microcrystalline cellulose and 3 to 4 parts of magnesium stearate; the second slow-release layer is prepared from the following components in parts by weight: 2.4 parts of chitosan-TPP modified doxazosin mesylate, 1.44 to 3.36 parts of carrageenan, 130 to 140 parts of polyethylene oxide, 30 to 40 parts of sodium alginate, 55 to 65 parts of citric acid, 67 to 77 parts of microcrystalline cellulose and 3 to 4 parts of magnesium stearate.

The present invention provides a green preparation process for cassava sour starch with baking expansibility, which relates to the technical field of food preparation. The process comprises the following steps: (l) preparation of native cassava starch, (2) fermentation and ultraviolet irradiation, and (3) drying. After preparing the native cassava starch, the native cassava starch is denatured by a method combining fermentation and ultraviolet irradiation. Subsequently, combined with the drying process of the present application, the finally obtained cassava sour starch has the characteristic of good baking expansibility.

The invention provides a feed additive for improving the hypoxia tolerance function of micropterus salmoides. The feed additive is prepared from the following raw materials in percentage by mass: 20% of arachidonic acid and the balance of maltodextrin. The invention also provides a feed composition of the feed additive. The feed is prepared from the following raw materials in percentage by mass: 450 per mill of fish meal, 50 per mill of fermented hermetia illucens pulp, 69.5 per mill of enzymolysis chicken powder, 60 per mill of chicken liver powder, 60 per mill of enzymolysis soybean meal, 75 per mill of fermented soybean meal, 60 per mill of cottonseed meal, 29 per mill of dextrin, 40.5 per mill of cassava starch, 23 per mill of soybean oil, 23 per mill of linseed oil, 15 per mill of monocalcium phosphate, 5 per mill of choline chloride, 1 per mill of a micropterus salmoides premix, 1 per mill of zeolite powder and 20 per mill of a feed additive. The feed composition is used for improving the hypoxia tolerance of the micropterus salmoides. According to the invention, arachidonic acid is used as a functional active substance to prepare the hypoxia stress resistant functional feed, and the addition of arachidonic acid can significantly activate liver angiogenesis genes, promote the liver angiogenesis level and improve the hypoxia tolerance of largemouth bass.

This application relates to the field of papermaking technology, and more particularly to a cationic cassava starch and its preparation method, apparatus, and application. The preparation method involves repeatedly statically mixing 60%–69% etherifying agent with 5%–15% caustic soda solution, adding 35%–42% cassava starch solution within 10–30 seconds, mixing, sieving, and then undergoing an etherification reaction to obtain cationic cassava starch. The apparatus includes an etherifying agent storage unit, a caustic soda solution storage unit, a raw material mixing unit, a cassava starch solution supply unit, a mixing and sieving unit, a reaction unit, controllable valves, a timer, and a control unit. Two storage units are connected to the raw material mixing unit, which is connected to the mixing and sieving unit via valves. The starch solution supply unit is also connected to it, and subsequently to the reaction unit. The control unit regulates the opening and closing of the valves to ensure the mixing of the solution is completed within 10–30 seconds. The application is the use of cationic cassava starch in papermaking. It is evident that the preparation method of this application can avoid gelatinization caused by excessively high local concentration when starch is mixed with alkali solution, and reduce the generation of impurities; the wet process can flexibly control the degree of substitution to adapt to paper machine production, eliminate the drying process, and produce wet cationic tapioca starch with stable degree of substitution, excellent quality, which can be directly supplied to paper machines and has good retention and filtration effects.

The invention discloses a production method of low-fat custard sauce. The production method comprises the following steps: step S01, raw material pretreatment: preheating skimmed milk, and adding a compound emulsifier to form a milk solution; mixing the modified cassava starch, resistant dextrin and konjac glucomannan, adding purified water, and stirring to prepare starch colloid emulsion; step S02, mixing and gelatinizing: sequentially adding low-fat yolk powder and corn oligopeptide powder into the cow milk solution, stirring and dissolving, slowly injecting starch colloid milk, and carrying out heat preservation and gelatinization; s03, seasoning and homogenizing: adding compound sugar, citric acid, edible salt and vanillin, stirring and dissolving, and homogenizing at high pressure; s04, sterilizing and cooling: quickly cooling after sterilizing; and step S05, filling: filling into a packaging bag, and sealing and storing. Through synergistic thickening of the composite colloid and the modified starch, flavor enhancement of the functional peptides and optimized emulsification and homogenization processes, fat and calorie are remarkably reduced, and meanwhile, the taste and stability of the product are guaranteed.

The invention relates to the technical field of instant food, in particular to high-reconstitution-property brewing type instant mashed taro powder and a preparation method of the high-reconstitution-property brewing type instant mashed taro powder. The high-rehydration instant mashed taro powder is prepared by compounding Lipu taro starch, cassava starch, potato starch, enzymolysis Lipu taro starch and potato starch, wherein the mass ratio of the Lipu taro starch to the cassava starch to the potato starch to the enzymolysis Lipu taro starch to the potato starch is 12: 3: 2: 3; the gelatinization degree of the Lipu taro starch is 80.59 to 100 percent; the gelatinization degree of the cassava starch is 79.64 to 100 percent; the gelatinization degree of the potato starch is 80.45 to 100 percent; and the enzymolysis DE value of the enzymolysis Lipu taro starch is 0.67-2.10. According to the high-rehydration-property instant mashed taro powder disclosed by the invention, rapid hot water rehydration is realized through a green processing technology, and a caking phenomenon is avoided. And after brewing, the soft and fine taste of the Lipu taro paste can be restored, and no additive is added, so that the health requirement is met. Besides direct brewing, the mashed taro can also be used for making mashed taro milk tea, desserts and the like, is suitable for fast-paced life, and promotes convenient and diversified development of mashed taro food.