442 results about "Starch paste" patented technology

The invention belongs to a biodegradation liquid mulching film and the preparation method thereof. The invention prepares polyvinyl alcohol into an aqueous solution with mass fraction of 5-10 percent; carboxymethyl cellulose is also prepared into an aqueous solution with mass fraction of 5-10 percent; starch with mass fraction of 5-10 percent is added into a reactor having an agitator, a condenser and a thermometer and is gelatinized for 30 minutes under 75-85 DEG C and then becomes transparent and slabby starch paste, the prepared polyvinyl alcohol solution and carboxymethyl cellulose solution are then added into the reactor, and surfactant and plasticizer are also added into the solution. The PH value is set as 2-4, cross-linking agent is then added, and the biodegradation liquid mulching film is obtained after 1-2-hour reaction under 85-90 DEG C. The film can be sprayed to the land surface through spray method after being thinned up.

A process of producing a thermoplastic starch / polymer blend involves introducing dry starch into a twin-screw extruder at a first location along the extruder, introducing a plasticizer into the twin-screw extruder at a second location along the extruder downstream of the first location to form a starch paste and then gelatinizing the starch paste in the extruder to form thermoplastic starch, and, introducing dry polymer at ambient temperature into the twin-screw extruder at a third location along the extruder downstream of the second location to form a blend with the thermoplastic starch in the extruder.

The invention discloses an edible composite film and a preparation method thereof, comprising the following components by volume portion: 50-80 portions of chitosan aqueous solution with the concentration in mass percent of 1.5 percent-3 percent, 20-50 portions of modified starch paste aqueous solution with the concentration in mass percent of 2 percent-4 percent, plasticizer accounting for 6-1 percent of the volume summation of the chitosan aqueous solution and the modified starch paste aqueous solution, and aliphatics auxiliaries accounting for 0.05-2 percent of the mass summation of the chitosan aqueous solution and the modified starch paste aqueous solution. In the invention, the edible composite film is prepared by taking the chitosan and the modified starch paste as the main film-forming materials and adopting a method of physical blending through naturally drying in a casting way. The film has good properties of oxygen resistance, oil resistance and rapidlysis in hot water, canreach a certain mechanical strength, and can be used as the internal surface of a food plastic packing bag or the internal package of instant fast food, thereby being a convenient, sanitary and environmental packing material.

The invention discloses a method for producing starch glue by low-temperature fast enzymatic conversion, which comprises the following process steps: 1) starch size mixing: adding clear water in the starch, adjusting the concentration of the starch to 20% to 30% by weight; 2) carrying out enzymolysis on the adjusted starch size, adding 0.003%-0.015% of alpha-amylase of dry basis weight of the starch into the starch size for enzymolysis; 3) carrying out high-temperature enzyme inactivation on the starch after enzymolysis, and simultaneously carrying out gelatinization; and 4) placing the starchafter gelatinization into a starch paste storage tank for standby. The process of the invention shortens production time, reduces energy consumption, greatly improves the viscosity of the product; the product is used in surface sizing of paper, which improves the stiffness of the paper, enhances the ability of compression resistance and tension resistance and reduces the dosage of the starch glue, thus reducing manufacturing cost, and ensuring the competitiveness of enterprises.

The invention discloses multifunctional microporous styptic powder and a preparation method and application thereof. The preparation method comprises the following steps: 1) mixing starch with water to obtain a starch solution or starch pasty liquid; 2) mixing carboxymethyl chitosan with water to obtain a carboxymethyl chitosan solution; 3) mixing the starch solution or the starch pasty liquid with the carboxymethyl chitosan solution to obtain a blended solution; 4) dispersing a pore-forming agent into the blended solution to obtain blended dispersion liquid; 5) dropwise adding an ionic crosslinker into the blended dispersion liquid under a stirring condition, mixing the obtained mixed system with a dispersing agent and an emulsifying agent, and performing crosslinking reaction and suction filtration; 6) removing the pore-forming agent from a product obtained in the step 5), and drying; 7) performing microwave treatment on a product obtained in the step 6) to obtain the styptic powder. The preparation method adopts a dual crosslinking method of ionic crosslinking and microwave treatment; used reagents are environmentally friendly, and free of residues; the biological activity of an amino group in the carboxymethyl chitosan can be retained easily.

The invention relates to a dry strength agent and a preparation method and application thereof. The preparation method comprises the following steps: (1) carrying out activation pretreatment on starch: adding dry basis starch to mixed aqueous solution of alkalis and urea and stirring and dispersing to obtain starch paste; (2) adding an oxidant and an etherifying agent to carry out oxidative degradation and cationization to obtain semitransparent viscous liquid and using a neutralizing agent to regulate the pH value of the system to 7-8; and (3) introducing nitrogen, adding acrylamide, raising the temperature to 80-90 DEG C after stirring for 30-60 minutes, simultaneously dropwise adding a mixed monomer and an initiator for 15-30 minutes and reacting for 1-2 hours after dropwise adding, thus obtaining the dry strength agent. The prepared dry strength agent is low in cost and is added to the wet parts of the papermaking and the production process is simple. Compared with other kinds of dry strength agents, the dry strength agent can obviously improve the dry strength and tearing strength of the paper and simultaneously has good film-forming property and heat resistance.

This invention relates to a modified starch preparation method, specifically a phosphate starch, which takes starch, urea, inorganic phosphate as raw materials in the double-cones rotary dryer, and conducts seven process steps of preparing chemicals, mixing, pre-drying, esterification, cooling, sieving, packaging to prepare the finished product, which is light yellow to yellow powder particle, and the viscosity peak is from 1000 to 6000BU. When the mass concentration is 6% for starch paste, it can gelatinize at the temperature lower than 66deg.C till cold water.

The invention belongs to the technical field of starch glue, in particular to a method for making papermaking starch glue, which comprises the following steps: a, adding starch and water into a mixing tank, blending to obtain a 24 to 30 mass percent concentration, adding amylase, and uniformly stirring; b, delivering the uniformly stirred starch to a pasting tank, introducing steam, heating to 80 to 85 DEG C, and allowing the starch to turn into paste under the action of the amylase within 1.5 to 2 hours; c, delivering the starch paste obtained after the starch turns into paste in the pasting tank to an inactivation tank, intruding steam, heating to 120 to 130 DEG C and inactivating the residue amylase for 3 to 5 minutes; and d, delivering the inactivated starch paste to a storage tank, adding clear water for regulating temperature, keeping the temperature of the starch paste in the storage tank between 75 and 85 DEG C, and obtaining starch glue for later use. In the invention, starch glue obtained by the method is free from flocculation, a glue roller does not dirty when the glue is applied, and the gluing application quality is improved.

The invention discloses a bacteriostatic edible disposable packaging film and a preparation method thereof. The packaging film is prepared by the following steps of: mixing the solution obtained by dissolving 5 to 10 parts by weight of chitosan in the aqueous solution of an acetic acid, and the aqueous solution obtained by dissolving the mixture of 1 to 3 parts by weight of hydroxyethyl cellulose or hydroxyethyl cellulose and gelatin in water, with starch paste obtained by mixing 72 to 76 parts by weight of edible starch, 12 to 15 parts by weight of glycerol with water to obtain mixed solution, and performing air drying and film formation to obtain the product, wherein the concentration of the aqueous solution of the acetic acid is 4 to 6 mass percent, and the aqueous solution of the acetic acid is 240 to 260 parts by weight; and in the mixture of the hydroxyethyl cellulose and the gelatin, the weight ratio of the hydroxyethyl cellulose to the gelatin is 2-3:1. The edible starch is preferably core starch or potato starch, more preferably corn starch. The packing film has the advantage of meeting the basic performance required by the packing films along with capability of inhibiting the growth of bacteria, edibility, no need of discarding, no influence on the flavor and mouthfeel of foods and low cost.

The invention discloses a Chinese traditional medicine compound for medical duck and the method for preparing said medical duck, which comprises following steps: preparing Chinese traditional medicine bag with Chinese yam, haw, Arillus longan, boxthorn fruit, lily, Siberian solomonseal rhizome, cassia seed, Chinese date and cloth, feeding said medicine bag and flavoring agents into clean duck belly; boiling, drying, coating the surface with a layer of starch paste, frying in oil, and vacuum packing. The product possesses following functions: enlivening the spleen, blood-nourishing, kidney tonifying, reducing fat and blood pressure, inhibiting hyperglycemia, and anti-aging.

The invention relates to a preparation method for ultrahigh-content malt syrup, which includes the following steps: (1) grain starch as material is added with water and produced into slurry, the dry matter concentration of the slurry is regulated to be 20 to 30 percent, the pH value of the slurry is regulated to be 5.8 to 6.2, and thermostable amylase is added into the slurry; (2) a cooker is used for cooking the slurry under 108 DEG C to 110 DEG C for 5 to 6 minutes, so that starch paste is obtained, the starch paste is liquefied to be hydrolyzed, the liquefaction time is 30 to 150 minutes, and after the temperature is increased to kill enzyme, aqueous maltodextrin solution is obtained; (3) the pH value of the aqueous maltodextrin solution is regulated to 5.0 to 5.2, the aqueous maltodextrin solution is added with diastatic enzyme, the bienzyme method or the trienzyme method is adopted to saccharify the aqueous maltodextrin solution, the saccharification time is 50 to 60 hours, and after the temperature is increased to kill enzyme, the ultrahigh-content malt syrup is obtained. According to the preparation method, low-DE value maltodextrin without needing filtration can be stably obtained, more than 85 percent of maltose can be obtained, and the method has a good application prospect.

The present invention relates to an assorted fish steak and its processing method. In particular, it relates to a processing method of squid. It is characterized by that its raw material composition includes (by weight portion) 2-4 portions of squid meat, 0.1-0.3 portion of peanut oil, proper quantity of at least one of onion, green bean, carrot and corn grain, proper quantity of salt and small quantity of spice. Its processing method includes the following steps: (1) selecting material; (2), pretreatment; (3), cutting; (4), adding auxiliary materials; (5), forming; (6), dipping in starch paste; (7) bread-crumbing; and (8), quickly-freezing and packaging.

The invention discloses a method for preparing a solid-mold casting coating material. According to the method, the solid-mold casting coating material is prepared from the following ingredients in parts by weight: 65-75 parts of rectorite powder, 5-7 parts of diatomite, 10-12 parts of wood ash, 10-12 parts of sodium bentonite, 4-6 parts of nano attapulgite, 1-2 parts of sodium tripolyphosphate, 0.8-1.5 parts of sodium carboxymethyl cellulose, 5-7 parts of starch paste, 1.4-1.6 parts of silica sol, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder and 525-535 parts of water. The solid-mold casting coating material prepared by the method has high wear resistance and excellent gas permeability and quick-drying performance in both a high-temperature environment and a low-temperature environment, thereby meeting the production requirements of large-sized cast parts.

The invention pertains to a forming process of biomass fuel, which is characterized in that the invention is formed by preparation of components and the technique processing and the weight ratio of main components are that: straw of 20-95, and starch of 2-60. The production technique process comprises the straw, grinding, sieving, starch, hydrolysis, forming starch paste, compounding, molding and drying processes. 10-120 meshes are sieved; Hydrolyzed starch / water=1 / 5-40; the molding adopts a pouring of mould vibration or an extrusion molding; a drying temperature ranges from 1-150 DEG C. The process has the advantages of simple technique, low investment, fast effect, low cost, convenience to popularize, and also the more ideal molding method of utilizing plant straws, fruits, rhizomes and organic refuse.

The present invention relates to a flavoured short fish steak and its processing method, in particular, it relates to a processing method of squid. It is characterized by that its main raw material component includes (by weight portion) 3-7 portions of squid comminuted meat, 2-4 portions of onion, proper quantity of starch, small quantity of salt and spice, proper quantity of egg and small quantity of sugar. Its processing method includes the following steps: (1), selecting material; (2), cutting; (3), adding auxiliary materials and mixing them; (4), forming; (5), preparing starch paste; (6), dipping in starch paste; (7), bread-crumbing; and (8), quickly-freezing and packaging.

The invention provides a preparation method of resistant starch RS3. The preparation method of the resistant starch RS3 comprises the following steps: (1) pulping: preparing starch milk from starch (corn, wheat, rice, sweet potato and potato) as raw materials and pulping uniformly; (2) pressing and heating: adjusting the pH value of the starch milk by using hydrochloric acid, adding a certain amount of acidic alpha-amylase, placing in a temperature-controllable heating high-pressure container, and pressing and heating; (3) debranching: adding pullulanase into starch paste which is cooled after pressing and heating and debranching; (4) centrifuging: centrifuging the debranching liquid at once to obtain a heavy phase part and a light phase part; (5) crystallizing: crystallizing the heavy phase part and the light phase part respectively at low temperature; (6) washing sugar: performing sugar washing on the crystallized heavy phase and the crystallized light phase respectively by using distilled water with a certain temperature for many times, centrifuging and removing supernatant to obtain heavy phase precipitate and light phase precipitate respectively; (7) performing fluidized drying by using a fluidized bed: drying and crushing the heavy phase precipitate and the light phase precipitate respectively to obtain two different specifications of resistant starch RS3.

The invention discloses a method for adding potato starch during processing fine dried noodles and an application. The method comprises a dough kneading procedure in the fine dried noodle production and is characterized by comprising the following steps: (1) preparing potato starch milk according to the proportion of 2-30 parts of dry potato starch powder in every 100 parts of flour; (2) adding bolded water of 90-98 DEG C into the starch milk, and fully stirring the starch milk to prepare pre-gelatinized potato starch paste; and (3) adding the starch paste and the flour into a dough kneading machine to prepare dough. The invention has simple technology and normal-temperature and normal-pressure operation, and fully utilizes the functions of thickening, jellification, adherence, film forming, and the like of the gelatinized potato starch paste; the fine dried noodles produced by the method are smooth and elastic, have the advantages of good taste, easy cook, flexibility, and the like, and have better texture index than common fine dried noodles after being tested by a texture analyzer; in addition, the potato starch is food raw material, thereby having high safety when being used as quality modifying agent of fine dried noodles, and providing a method suitable for industrialized scale production for promoting the quality improvement of basic main food such as fine dried noodles in China.

The invention belongs to the field of nonchemical modified starch and relates to a method for producing digestion starch, in particular to a method for preparing digestion starch containing slow digestion starch by enzymolysis. In order to solve the problem that the content of the slow digestion starch in the digestion starch is difficult to further improve due to the fact that the prior art for preparing the digestion starch is limited by the proportion of alpha-1, 6 glucosidic bond, the invention provides the method for preparing digestion starch containing slow digestion starch by enzymolysis. The method effectively solves such the technical problem by adding transglucosylase and amylase to the enzymolysis process of starch paste prepared from starch.

The present invention relates to a preparation method of flavour meat food. Said preparation method includes the following steps: (1), firstly, boiling flavouring material in clear water to prepare a flavouring liquor; (2), selecting meat material, cutting said meat material into meat pieces or meat slices, soaking said meat pieces or meat slices in the above-mentioned flavouring liquor for 15-20min; (3), beating egg into starch, fully stirring them uniformly to obtain starch paste; (4), taking out meat material from the above-mentioned flavouring liquor, draining, dipping every meat piece or meat slice into the starch paste and bread-crumbing it; (5), deep-frying the above-mentioned meat material in deep-frying pan for 3-8min until the color of meat material is changed into gold-yellow color, stopping heating, taking out meat material and cooling; (6), spreading seasonings on the cooked meat material; and (7), high-temperature sterilizing and vacuum packaging so as to obtain the invented meat food.

The invention discloses a method for preparing a solid-mold casting coating material for cast aluminum. According to the method, the solid-mold casting coating material is prepared from the following ingredients in parts by weight: 65-75 parts of quartz powder, 5-7 parts of plant ash, 5-7 parts of slag, 10-12 parts of corundum powder, 10-12 parts of sodium bentonite, 4-6 parts of nano attapulgite, 1-2 parts of lignosulfonic acid, 2-4 parts of polyvinyl alcohol, 0.3-0.7 part of n-octanol, 2-4 parts of sodium borate, 5-7 parts of starch paste, 1.4-1.6 parts of silica sol, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder and 525-535 parts of water. The solid-mold casting coating material prepared by the method has excellent gas permeability and quick-drying performance in both high-temperature environments and low-temperature environments, thereby being capable of meeting the production requirements of large-sized cast parts.

The invention relates to a method of preparing a starch-base highly-water-absorbent material by radiation. The method is characterized by comprising steps of: 1) preparing raw materials of starch, acrylic acid, sodium hydroxide solution and water according to a weight ratio of 6-9:44:47.6-60.9:40-80; 2) mixing the water and the starch, heating for gelatinization, and adding the sodium hydroxide solution to obtain starch paste; 3) placing the rest of the sodium hydroxide solution in an ice bath, and injecting the acrylic acid into the sodium hydroxide solution to obtain a neutralization solution; 4) uniformly mixing the starch paste and the neutralization solution; 5) radiating the mixture at room temperature under a radiation source for 1-4 kGy, and placing at room temperature for 8 h to obtain colloid; 6) adding the colloid into a meat mincer and mincing the colloid into bars to obtain bar-shaped colloid; 7) putting the bar-shaped colloid into a microwave drying oven, and drying step by step until the weight of the bar-shaped colloid is constant; and 8) smashing the dry material obtained in the step 7) by a smashing machine, and sieving with a sieve having a size of 20-100 meshes to obtain the starch-base highly-water-absorbent material. The starch-base highly-water-absorbent material is high in performance and low in cost.

A method for producing sweet potato vermicelli comprises the following steps: starch paste making, powder kneading, air bubble pumping through a vacuum machine, noodle straining and forming, powder cooking and pasting, powder ordering and racking, natural ageing, freezing ageing, defrosting drying, weighing and packaging and warehousing. As sodium alginate serves as a thickening agent, the viscosity and flexibility of sweet potato vermicelli are greatly improved.

The invention discloses alum-free potato vermicelli and a preparation method thereof. The alum-free potato vermicelli is prepared from the following components in parts by weight: 70-110 parts of potato starch, 2-15 parts of bean starch, 40-70 parts of water and 0.2-13 parts of a compound quality modifying agent. The compound quality modifying agent comprises 0.1-5 parts of salt substance and 0.1-8 parts of protein powder; the salt substance can be NaCl, KCl or CaCl2; and the protein powder is one of vital gluten, whey powder, egg white powder and a yeast extract or a mixture thereof. The preparation method comprises the following steps: thickening with a mixture of starch and water; taking 2-15 parts of the potato starch to be mixed with the bean starch; adding warm water and agitating; heating in a water bath of 90-99 DEG C to obtain starch paste; kneading dough: mixing the residual potato starch, the compound quality modifying agent and the starch paste to knead the dough; and pressing powder and shaping: carrying out powder pressing on the obtained dough, and boiling with water and curing after the water powder pressing is carried out, wherein the water boiling temperature is 90-99 DEG C, and curing and cooling to obtain the alum-free potato vermicelli.

The invention discloses a method for preparing high-retention environmental-friendly one-step double-modified starch. In the method, native starch is used as the raw material and is added with adjuvants, i.e. an organic solvent, an etherifying agent, a catalyst, an activating agent, a dispersing agent, an oxidizing agent and a stabilizer; and two modification reactions of cation etherification and oxidation are completed in one step by adopting a microwave semi-dry method so as to produce the high-retention environmental-friendly double-modified starch. According to the invention, the reactions of cation etherification and oxidation are simultaneously carried out under the same microwave condition; the process design is scientific and reasonable; and starch paste has the characteristics of low viscosity, good rheological property and high bonding strength. A microwave semi-dry reagent has high conversion rate; no three wastes (waste gas, waste water and industrial residue) are discharged basically; damage to the environment caused by wastes generated by the chemical reactions can be obviously reduced; and the method has obvious economic benefits.

The invention provides microcapsule fatty powder capable of increasing content of omega3-enriched meat egg milk and a preparation method of the microcapsule fatty powder. The microcapsule fatty powder capable of increasing the content of the omega3-enriched meat egg milk comprises a water soluble wall material and an omega3-containing fat core material embedded in the wall material, wherein the water soluble wall material is at least one of dextrin, water soluble syrup, whey powder and chitosan, and then is mixed with starch paste, and thus the microcapsule fatty powder is obtained; the omega3-containing fat core material is at least one of linseed oil, deep sea fish oil and algal oil and is prepared by mixing a compound emulsifier with sodium stearoyl lactate. The microcapsule fatty powder capable of increasing the content of the omega3-enriched meat egg milk can be combined at small intestines and pancrelipase easily, the digestion absorption utilization rate of fat containing omega3 is greatly increased, and the fatty powder capable of increasing the content of the omega3-enriched meat egg milk is resistant to oxidation and easy to store and can not be oxidized or become acid, and thus the content of omega3 is guaranteed.

A repairing material for a weathering ganged brick comprises, by mass, 10%-40% of quick lime, 50%-80% of sintering shale powder, 4%-8% of glutinous rice starch, 4%-6% of gypsum and 2%-8% of calcium hydroxide. A preparation method comprises the following steps that a certain amount of water is added in the glutinous rice starch, digesting is conducted for 2h to 2.5 h at the temperature ranging from 75 DEG C to 85 DEG C, and modified glutinous rice starch paste is obtained; the sintering shale powder, the quick lime, the gypsum and the calcium hydroxide are evenly mixed; the prepared modified glutinous rice starch paste and the rest of water are added, stirring is conducted for 1 min to 2 min, and the repairing material is obtained, wherein the ratio of water to material is 0.45 to 0.56. The sintering shale powder is selected to serve as one component of the repairing material for the weathering ganged brick, obtained sintering shale powder is closest to the color of an original brick body, fast cooling is conducted on the sintered shale powder, partial SiO2 can be made to be in a high-energy activated state, and therefore conducting of a reaction in the later period is facilitated.

The invention discloses a preparation method of vitamin A acetate microcapsules. The method includes the steps: (1) mixing vitamin A acetate and an antioxidant in a nitrogen atmosphere, and melting; (2) mixing gelatin, sugar and deionized water, heating and dissolving; (3) shearing the gelatin-sugar-water solution with a high-speed shearing machine, slowly adding vitamin A acetate melt oil into an aqueous solution, fully dispersing, and thus obtaining an emulsified liquid; (4) atomizing the emulsified liquid through an atomizer, spraying into starch slurry, and granulating; and (5) filtering at ordinary pressure to obtain a mixture of microencapsules and starch, and then obtaining the water-insoluble vitamin A acetate microencapsules by drying, sieving and crosslinking steps. With adopting of the high-solid-content emulsification system and the dispersed granulation technology in the starch paste, the method has the advantages of short drying time, low operating temperature, low energy consumption, low loss rate of vitamin A acetate in the granulation process, low preparation cost, good embedding effect and high storage stability of the product.

The invention relates to hydrotalcite preparation with rapid efficiency and a preparation process thereof, which belong to the biopharmaceuticals field. Every 1000 hydrotalcite units of the invention comprise the following constituents: 0.45-0.55kg of hydrotalcite, 0.18-0.25kg of mannitol, 12-18g of carboxymethyl starch sodium, 8.0-15.0g of magnesium stearate, 0.5-1.0g of sodium cyclamate, 0.3-0.9ml of peppermint flavor, 0.378kg-0.462kg of pre-gelatinized starch paste (12 percent by mass specific concentration) and 0.504kg-0.616kg of pre-gelatinized starch paste (5 percent by mass specific concentration). The preparation process of the invention comprises the following steps: hydrotalcite and mannitol are prepared into super-fine powder with grain diameter of 5-15um, which are blended with carboxymethyl starch sodium, sodium cyclamate and pre-gelatinized starch paste, wet granulated, sieved by a sieve with 12-16 meshes, totally mixed, packaged or tabletted to prepare finished product of hydrotalcite preparation; the hydrotalcite preparation prepared by adopting the method of the invention has fast effectiveness, good effect with low toxicity, small side-effects, pleasant taste and high suffer compliance, which is an ideal clinical antiacid.

Disclosed are a microcapsule fat powder of Ω3-enriched meat, egg and milk and its preparation method, and the powder includes a water-soluble wall material and an Ω3 oil core material embedded in the wall material. The water-soluble wall material is prepared by mixing dextrin, water-soluble syrup, whey powder or chitosan with starch paste, and the Ω3 oil core material is prepared by mixing linseed oil, deep sea fish oil or algae oil with a composite emulsifier which is stearic acyl lactylate. The microcapsule fat powder can be combined with intestinal and pancreatic lipases very easily to improve the digestion, absorption and utilization of Ω3 oils.