255 results about "Starch granule" patented technology

The invention provides infant rapid brewing rice flour based on enzymolysis and superfine water grinding and a preparation method thereof, and belongs to the technical field of food processing. Rice is subjected to raw material differential temperature pretreatment and multi-stage hydration pulping, and a stable three-dimensional microscopic network structure with starch particles as filler and soluble protein and colloid as a continuous phase is constructed; then, food-grade lactic acid bacteria pre-fermentation is combined with sequential action of various enzymes, and starch and protein are subjected to mild directional hydrolysis under the condition of simulating dynamic pH of gastrointestinal tract digestion, so that the nutritional and digestible infant healthy rice flour is prepared, and the problems that the rice flour is easy to agglomerate, non-uniform in dispersion and low in nutritional value during brewing are solved. The digestion and absorption efficiency of macromolecular nutrient components such as starch and protein is relatively low, and the nutrition and flavor of the product mainly depend on exogenous addition, so that the naturalness and functionality are insufficient. The rice flour disclosed by the invention has excellent reconstituability and nutrient absorption rate, and is suitable for being used as a healthy nutritional complementary food for infants of 6-36 months.

To provide a technology for manufacturing a spring roll skin having good palate feeling even when a relatively long time passed not only just after fried but also after fried.SOLUTION: A spring roll mix includes wheat flour passing through a sieve having an opening of 24 mesh; and granule passing through a sieve having an opening of 6 mesh and also not passing through a sieve having an opening of 24 mesh. The granule comprises at least one kind selected from grain, a grain ground product, starch grain, an instant noodle crushed product, a dried noodle crushed product, bread powder and a swollen substance crushed product. The content of the granule in the spring roll mix is 2-35 pts.mass based on 100 pts.mass of wheat flour.SELECTED DRAWING: None

The invention discloses a plant starch composite material for children's toys and a preparation method thereof, and belongs to the technical field of degradable materials.The preparation method comprises the steps that double-bond silicon dioxide microspheres are prepared through a sol-gel method and polymerized with methyl methacrylate, then a styrene-maleic anhydride copolymer is hydrolyzed under the acidic condition, and the plant starch composite material is obtained; the preparation method comprises the following steps: hydrolyzing a styrene-maleic anhydride copolymer to obtain a hydrolyzed copolymer containing a carboxyl group, carrying out esterification reaction on the hydrolyzed copolymer and starch, consuming a large amount of hydroxyl groups on the surface of the starch by the esterification reaction so as to increase the compatibility of the starch and PBAT, and forming a flexible coating layer on the surface of the starch by a long-chain structure of the hydrolyzed styrene-maleic anhydride copolymer so as to prevent agglomeration among starch particles; the coating layer has a relatively low friction coefficient, is easy to generate molecular chain slippage when being stressed, and endows the surface with self-lubricating property, so that the microspheres can disperse stress through sliding in the use or processing process, the coating layer forms a soft shell on the surfaces of the microspheres, and direct contact of the microspheres is prevented through steric hindrance, so that the microspheres are not easy to agglomerate.

The invention discloses a method for preparing highly branched starch by using double enzymes, and belongs to the field of biologically modified starch. According to the invention, glycogen branching enzyme and cyclodextrin glucosyltransferase are adopted to synergistically modify different crystal forms of starch in a non-gelatinization swelling system (60 DEG C) to prepare highly branched starch, the reaction is carried out on the premise of ensuring the morphology of starch particles, and the later processing application characteristics are ensured, so that the highly branched starch can be fused with a traditional starch staple food carrier, and the preparation process is simple and convenient. According to the method, the enzyme modified starch and the swelling reaction are synchronously carried out, the step of cooling after high-temperature gelatinization is reduced, the production efficiency is improved, the adverse effect of high viscosity caused by high-temperature gelatinization on starch products is avoided, and the obtained product is high in yield, high in branching degree, low in digestibility and high in glucosidic bond proportion; a healthy and green new thought is provided for the field of starch deep processing.

The invention discloses a hard carbon negative electrode material and a preparation method and application thereof, and belongs to the technical field of batteries. Comprising the following steps: by taking starch as a raw material, carrying out cross-linking treatment on starch particles by using a first cross-linking agent, controlling the cross-linking degree of the starch particles, enabling a starch skeleton to be in a semi-fixed state, maintaining the original morphology of the starch particles, giving a certain shrinkage cavity space for two-section cross-linking, and then treating by using a second cross-linking agent to shrink the pore structure of the starch, so as to obtain the modified starch. The preparation method comprises the following steps: carrying out cross-linking on starch-based hard carbon so as to achieve the purpose of adjusting pores, finely regulating the pore structure of the starch-based hard carbon, and carbonizing cross-linked starch particles obtained by cross-linking, thereby obtaining the hard carbon negative electrode material with better sodium storage performance, high capacity and high first efficiency.

The invention discloses a preparation method of a regulatable and degradable ecological environment-friendly nutrition cup, and belongs to the technical field of biodegradable materials and garden seedling raising containers. Aiming at the technical problems of insufficient long-term supporting strength, mismatch between degradation rate and seedling growth cycle and low fiber axial enhancement efficiency of a garden seedling nutrition pot, the invention provides a solution for regulating and controlling through interface enhancement and gradient degradation. Adding a nanoscale inorganic filler, sodium alginate, a sterilizing agent, a rooting accelerant and potassium humate, and performing staged temperature-controlled stirring to form a phase separation structure; carrying out twin-screw extrusion and directional molding to obtain a cylindrical green body in which starch particles are wrapped by a polylactic acid continuous phase network and fibers are axially arranged; a polycaprolactone and polyhydroxyalkanoate blending coating is adopted, and a controllable degradation layer is formed on the surface through ultraviolet radiation gradient crosslinking. The nutrition bowl prepared by the method has the characteristic of precise and controllable degradation period, and is suitable for containerized seedling culture of large garden seedlings.

The invention relates to the technical field of processing potato starch, and discloses a pulverizing device for processing potato starch, comprising a shell, a screening mechanism is arranged inside the shell, a pulverizing mechanism is arranged inside the screening mechanism, a feed plate is installed at the rear end of the shell, a rasp is arranged at the lower end of the shell, a discharge port is opened at the lower end of the rasp, and a confluence pool is arranged below the discharge port. The advantages of the invention are that the processing amount of potato pulverization per unit time can be increased, and large potato blocks can be transported into a rotary drum through a screening belt and an inclined plate, and cut into blocks again, so as to ensure that the potato blocks are fully broken, the starch particles are fully released, and the production quality is improved.

This invention discloses a rice starch synthesis-related gene, OsFLO17, its encoded protein, and its applications. Through phenotypic analysis of the rice endosperm mealy mutant flo17 and preliminary localization of the target gene, the starch synthesis-related protein OsFLO17 was ultimately cloned. This protein consists of the amino acid sequence shown in SEQ ID NO.3. The starch granule development-related protein of this invention affects the rice endosperm starch synthesis process. Introducing the encoding gene of this protein into plants with abnormal starch granules can yield transgenic plants with normal starch filling. Therefore, the protein and its encoded gene of this invention can be applied to plant genetic improvement.

The invention discloses a preparation method of starch-based emulsion gel, the starch-based emulsion gel and a food additive, and relates to the technical field of emulsion gel. The preparation method of the starch-based emulsion gel comprises the following steps: carrying out ozone oxidation treatment on esterified modified starch to obtain double modified starch; mixing the double-modified starch with water, heating and oscillating to obtain double-modified starch gel; and homogenizing and balancing the double-modified starch gel, an oil phase and a calcium ion solution to obtain the starch-based emulsion gel. Ozone oxidation treatment destroys a starch particle structure, more short chains are dissolved out or extended out, keto groups and carboxyl groups of the double-modified starch are increased, hydroxyl groups are reduced, and hydrophobicity and surface charge properties of the double-modified starch are improved, so that the emulsifying capacity of the double-modified starch is improved; the divalent calcium ions can neutralize negative charges of carboxyl among emulsion droplets, enhance hydrogen-bond interaction among starch molecules, and further cross-link the starch molecules through electrostatic interaction and anion bridging, so that the gel structure is induced to be more compact, and emulsion gel is formed.

The present invention discloses a chitosan-starch composite Janus particle and its preparation method and application. The present invention uses starch modified with succinic anhydride as a particle stabilizer for Pickering emulsion, and saturated fatty acid as an oil phase to prepare a Pickering emulsion template, so that a part of the starch particles are locked in the solidified fatty acid oil phase, and a part is exposed to the water phase; then the natural polysaccharide chitosan is electrostatically adsorbed with starch, so that the surface of the starch particles exposed in the water phase is combined with chitosan nanoparticles to achieve the purpose of asymmetric modification. The present invention prepares Janus particles combined with two polysaccharides for the first time, which can combine the characteristics and advantages of two biomacromolecules, and further expand the application of Janus particles in the field of food or medicine. The raw materials used in the present invention are green, environmentally friendly and natural polysaccharide materials with good biocompatibility, and have broad application prospects.

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 invention discloses a method for prolonging the shelf life of cooked wheaten food at normal temperature. The method comprises the following steps: S1, preparing OSA modified acorn starch; s2, carrying out enzymolysis on the OSA modified acorn starch; s3, preparing a plant essential oil emulsion; s4, loading the plant essential oil emulsion on the acorn starch; and S5, preparing the antibacterial bag. Holes are formed in the surfaces and interiors of the starch particles. The pores enable the starch particles to become loose and porous, and the specific surface area is increased, so that the physicochemical properties and functional characteristics of the starch are changed. The formation of the porous starch not only improves the adsorption performance of the starch, but also enhances the solubility and expansibility of the starch. Due to the porous structure, water molecules can more easily permeate into starch particles, dissolution and expansion of starch are promoted, essential oil can more easily enter the starch, and the loading rate of the essential oil is increased. And in a dry environment, the essential oil can also be slowly released from the porous starch structure.

The invention belongs to the technical field of foam box materials, and particularly relates to a degradable foam box for a cold chain and a preparation method of the degradable foam box. The degradable foam box for the cold chain is prepared from the following components in parts by mass: 70 to 90 parts of thermoplastic starch particles, 10 to 30 parts of modified polylactic acid particles, 10 to 20 parts of modified bamboo fibers, 2 to 5 parts of maleic anhydride polyester elastomer, 1 to 3 parts of plasticizer, 1 to 3 parts of plastic degradation flexibilizer and 0.5 to 1 part of nucleating agent, the modified bamboo fibers are bamboo fibers modified by nano calcium carbonate and cellulose nanocrystalline particles. The degradable foam box for the cold chain meets the basic performance requirements of degradable materials, has good compost degradation capacity and is suitable for fresh food distribution, cold chain packaging and other scenes.

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.

The utility model discloses starch separation equipment for potato starch production, and relates to the technical field of starch separation.The starch separation equipment comprises a device bottom frame and an impurity separation mechanism, the impurity separation mechanism is arranged above the device bottom frame, and potato starch slurry is subjected to flowing filtration through a filtering inner net on the side wall of a separation tank; the potato starch slurry is filtered and separated for the first time through the first-stage filter screen, impurities in the potato starch slurry are blocked and separated, the potato starch slurry is filtered and separated for the second time through the second-stage filter screen, the potato starch slurry is filtered and separated for the third time through the outer filter screen, and the impurities with different sizes are sequentially filtered and separated, so that the purity of the potato starch slurry is ensured; the potato starch slurry in the separation tank is subjected to high-frequency vibration through the ultrasonic vibrator, so that the separation between starch particles and impurities is easier, and meanwhile, ultrasonic waves can destroy the cohesive force among the starch particles, improve the filtering and separating speed and prevent the potato starch slurry from blocking the filter screen.

The application discloses a method for measuring the size distribution of wheat starch granules. The method comprises the following steps: selecting wheat seeds to be measured, soaking the seeds to release starch granules, and then performing dyeing; adding a solvent to dilute the dyed sample, performing sheet preparation to obtain a sample sheet; determining a suitable shooting area of the sample sheet by using a microscope and image processing software; setting color counting of the suitable shooting area, segmenting and coloring the image, obtaining the number of the selected image, and marking; re-segmenting the image which is not completely segmented in the segmented and colored image to obtain radius data of the corresponding image; reordering the radius data to complete the measurement of the size distribution of the starch granules of the wheat seeds to be measured, and the size distribution of the starch granules of the wheat can be calculated. The application has the advantages of small sample amount, simple instrument, simple operation process, full visual control, and high accuracy, and detailed data of the diameter of each starch granule are contained in the result.

The present invention discloses an enzymatically modified starch adsorbent and a preparation method thereof, and relates to the field of adsorbent technology. The method comprises the following steps: adding corn starch to deionized water and performing gradient temperature-ultrasound synergistic treatment, first subjecting the pretreated starch solution to cold plasma treatment under a nitrogen atmosphere, adjusting the pH, heating, and then adding a complex enzyme for enzymatic hydrolysis, adding modified sulfonic acid sodium alginate for reaction, and then adding epichlorohydrin and stirring the reaction; then subjecting the solution to cold plasma treatment under a nitrogen atmosphere, adding pretreated attapulgite for reaction, adding ammonium sulfate and acrylamide and excluding air, and then filtering, washing, and drying the solution after the reaction to obtain an enzymatically modified starch adsorbent. The pretreatment of corn starch by the present invention effectively improves the reactivity of starch granules; the introduction of ingredients such as pretreated attapulgite further improves its adsorption capacity and adsorption capacity stability. Therefore, the adsorbent of the present invention has a wider application prospect.

The invention discloses a method for preparing highly branched starch with different crystal forms from glycogen branching enzyme, and belongs to the field of biologically modified starch. The method comprises the following steps: (1) dispersing starch in a buffer solution to obtain starch milk; (2) carrying out sub-gelatinization pretreatment on the starch milk, and then adding glycogen branching enzyme to carry out enzymolysis reaction; and (3) after the enzymolysis is finished, carrying out alcohol precipitation, washing, freeze drying, grinding and sieving to obtain the branched starch. The conventional modification step of cooling and adding enzyme after high-temperature pre-gelatinization treatment is omitted, the effect that glycogen branching enzyme is directly added at 60 DEG C to act on granular starch with different crystal structures is realized, the complete granular form of the starch is ensured, the post-processing characteristics are ensured, and the effect of synchronously performing enzymolysis reaction and starch granule swelling is realized; the problems caused by treating high viscosity of starch are avoided while the energy consumption is reduced, and the adverse effects of high-temperature gelatinization on the texture and properties of starch products are avoided.

The invention belongs to the field of plant engineering technology and crop germplasm resource innovation, and particularly relates to a rice BEIIb gene mutant, application of the rice BEIIb gene mutant in improving rice resistant starch and an improving method. A mutant material with high resistant starch content is created by knocking out the rice BEIIb gene, and compared with a wild type, mutant seeds show an obvious chalky phenotype, composite starch particles are abnormal in a spherical or ellipsoidal shape, the amylose content is remarkably increased, the protein content is remarkably reduced, the resistant starch content is remarkably increased, and the resistant starch content is remarkably reduced. The hardness of cooked rice is remarkably increased, and the elasticity is remarkably reduced. Through transcriptomics analysis, the protein mainly participates in biological pathways such as carbohydrate metabolism, chloroplast photosynthesis, calmodulin combination and secondary metabolite synthesis, and the expression level of endosperm starch synthesis related genes is obviously changed. The method can provide theoretical basis and method reference for breeding of high-quality rice varieties with high resistant starch.

The invention relates to the technical field of starch gelatinization, in particular to a starch gelatinization device for glucose preparation, which comprises a gelatinization tank, a discharge pipe and a water inlet pipe with valves are fixedly arranged at the bottom and the side part of the gelatinization tank respectively, and a pretreatment mechanism is arranged on the gelatinization tank. According to the device, the driving motor is arranged to enable the crushing roller to crush starch, and then the output motor and the grinding roller can grind the crushed starch, so that the starch is firstly crushed and then ground, the uniformity of the size of starch particles is greatly improved, and the influence on subsequent gelatinization and taste is avoided; meanwhile, output of a driving motor enables a discharging pipe and an annular plate to rotate, rotation of the discharging pipe enables an extension pipe to do circular motion, at the moment, rotation of the annular plate enables the extension pipe to stretch out and draw back through a sliding block, a tension spring and a triangular block, stretching-out and drawing-back positions are different, then starch is evenly laid, and the quality after rolling is greatly improved.

A method for preparing nano starch particles using an alkaline treatment process belongs to the technical field of starch nano particle preparation. The preparation method comprises preparing a sodium aluminate solution of a specific concentration and utilizing it to disrupt hydrogen bonds within and between starch molecules under high temperature and high pressure conditions; centrifuging the resulting mixed solution to wash away impurity ions; and freezing the resulting solid material with liquid nitrogen and freeze-drying it to obtain the nano starch particle product. The present invention treats natural starch with an alkaline sodium aluminate solution under high temperature and high pressure conditions to disrupt hydrogen bonds within and between starch molecules. The impurity ions are then removed through washing and freeze-drying, while simultaneously obtaining homogeneous powdered nano starch particles suitable for further use. The advantages of the present invention are: 1) the prepared nano starch particles have a uniform particle size, all less than 100 nanometers; and 2) the method provided by the present invention offers a simple reaction process, mild conditions, and a yield exceeding 60%, making it suitable for industrial production.

The utility model discloses stirring equipment for modified starch processing, which relates to the technical field of starch processing and comprises a fixed stirring box, a movable stirring box is detachably mounted at the upper end of the fixed stirring box, a first motor is mounted in the middle of the lower end of the fixed stirring box, and a conical stirring block is mounted at the output end of the first motor and located in the fixed stirring box. A second motor is installed in the middle of the upper end of the movable stirring box, a rotating rod is installed at the position, located in the movable stirring box, of the output end of the second motor, and two scraping plates are installed at the lower end of the rotating rod. The first motor drives the conical stirring block to rotate, the conical stirring block can stir starch particles and a treating agent towards the periphery of the conical stirring block, and meanwhile the second motor drives the scraping plate to scrape the starch particles and the treating agent close to the inner walls of the fixed stirring box and the movable stirring box towards the middle. The starch particles and the treating agent can be mixed and stirred for multiple times.

The invention relates to the technical field of starch slurry preparation, in particular to a corn starch slurry mixing machine, comprising a storage barrel for holding materials, two filter plates and two piston plates located in the storage barrel, wherein the two filter plates are close to each other and located in the middle of the storage barrel, and the two piston plates are located on both sides of the two filter plates along the axis direction of the storage barrel; the inner space of the storage barrel is divided into extrusion spaces on both sides and a flushing space in the middle by the two filter plates, so that the material flows repeatedly between the two extrusion spaces, and the flow of the material is utilized to flush and dissolve the starch particles, and the filter plates can be utilized to disperse the material and intercept the block material, so that the block material is continuously flushed and dissolved by the fluid, which greatly improves the material dissolution speed, enhances the material dispersion effect, improves the uniformity of the slurry concentration, and improves the work efficiency.

The invention relates to methods for altering the starch granule composition in starch storage organs. Also described are genetically altered plants characterised by the above phenotype as well as methods of producing such plants.

This invention provides a method for easily producing a starch-containing solid composition for cooking that is less prone to cracking even after prolonged storage at room temperature, using general-purpose equipment, while also improving the powdery texture during consumption. [Solution] A manufacturing method comprising the steps of (i) to (iii). (i) A step of preparing a composition that satisfies predetermined conditions with respect to the content of dietary fiber, starch, and protein, specific surface area per unit volume after ultrasonic treatment, degree of gelatinization of starch, starch granule structure, and molecular weight logarithm. (ii) A step of mixing the composition with water at 40°C or higher so that the dry weight moisture content exceeds 30% by mass. (iii) A step of transporting the composition by extruder under conditions that satisfy (8) to (10). (8) The temperature of the composition in the extruder is 55°C or higher. (9) The specific mechanical energy (SME) value of the extruder is less than 300 kJ / kg, and / or the ratio of the length of the flight section to the total length of the screw is 90% or higher. (10) The pressure in the extruder is 1.5 MPa or higher.

The present invention provides a method for preparing Pickering emulsion with esterified starch and its application in food preservation, belonging to the technical field of preparation of granular emulsifiers and their application. Corn starch is dissolved in dimethyl sulfoxide, 3,6-dimethylphthalic anhydride is added with stirring, reacted, eluted, dried, crushed and sieved to obtain esterified corn starch; esterified corn starch is used as a granular stabilizer to prepare an aqueous suspension, an oil phase is added, and homogenization is performed to obtain a Pickering emulsion that can remain stable after storage for 50 days, which can significantly reduce the particle size of starch particles, and provide a modification method for stabilizing Pickering emulsion with modified starch, which has a simple process, a wide source of raw materials, and a low cost, and the emulsion has good emulsification performance and high stability. In addition, the Pickering emulsion prepared with esterified starch is applied to food preservation, especially in food cling film or preservatives. The food cling film can extend the shelf life of fresh pork to 10 days at 4°C, which provides an effective prerequisite for food safety.

The invention discloses a method for improving the starch digestibility inhibition effect of a spray drying method by using high amylose, and belongs to the technical field of food processing. According to the invention, highland barley glutelin, low-amylose-content corn starch, normal-amylose-content corn starch and high-amylose-content corn starch are selected, and a spray drying technology is used to simulate an embedding structure of protein in a natural grain structure on the surface of starch particles. The method comprises the following steps: dissolving protein in a 0.02% NaOH solution, then adding corn starch with different amylose contents, stirring for 30 minutes, then carrying out spray drying treatment, controlling the addition amount of the protein to be 10% of the total mass of the starch, setting the inlet temperature of a spray dryer to be 170 DEG C, setting the outlet temperature to be 80 DEG C, and controlling the feeding speed of a peristaltic pump to be 35 mL / min; the appearance of the prepared starch sample is similar to the spatial structure in highland barley grains, and the digestibility of the highland barley grains is reduced.

The invention belongs to the field of starch modification, and discloses an ultrasonic-sodium citrate composite modification method of lotus root whole powder and modified lotus root whole powder. The modification method comprises the following steps: mixing lotus root whole powder, sodium citrate and water to obtain a mixture; and sequentially carrying out ultrasonic treatment, freeze-drying and grinding treatment on the mixture to obtain the modified lotus root whole powder. According to the method disclosed by the invention, multi-scale regulation and control on a starch particle crystal structure, an intermolecular acting force, a gelatinization characteristic and a gel network are realized through cooperative treatment of ultrasonic (physical field) and sodium citrate (chemical environment), the modification effect of the lotus root whole powder is remarkably improved, and starch retrogradation is effectively inhibited.

The utility model relates to the field of starch homogenizing processing, and discloses homogenizing equipment for homogenizing starch, which comprises a machine body, a hopper is arranged at the upper part of the right side of the machine body, a stirring component and a vibrating component are arranged on the outer side of the hopper, and the stirring component comprises a fixing piece fixedly connected to the outer side of the hopper. The right side of the fixing piece is fixedly connected with a driving motor, and the upper portion of an output shaft of the driving motor is fixedly connected with a transmission gear. The outer side of the hopper is fixedly connected with a fixed cylinder, and the outer side of the fixed cylinder is rotationally connected with a rotating cylinder. According to the utility model, the transmission gear is driven by the driving motor to rotate, the transmission gear is meshed with the teeth on the rotating cylinder, so that the rotating cylinder drives the stirring rod to rotate in the hopper, and the columnar stirring rod on the outer side can be in full contact with starch in the hopper during rotation to stir the starch and effectively scatter agglomerated starch particles; the uniformity of the starch is improved, and the efficiency of subsequent homogenizing processing is guaranteed.

The invention discloses a preparation method and application of an edible skin protective agent for frozen green dough, and belongs to the technical field of food. The edible epidermis protective agent comprises the following components: acetylated distarch adipate, carboxymethyl cellulose, ascorbic acid, glycerol and water. The invention further discloses application of the skin protective agent in frozen green bodies, namely, the skin protective agent is prepared into a coating to be applied to frozen green body dough, and the frozen green body dough coated with the protective agent can keep good specific volume, height-diameter ratio, apparent color and texture quality after being subjected to freezing and thawing cycles. Meanwhile, the protective agent can also relieve dough skin damage caused by recrystallization and moisture migration of ice crystals and damage of a gluten protein network and starch particles in the freezing and thawing cycle process. The method is beneficial to improving the quality of the frozen green flour product, prolonging the preservation time and promoting the standardized and industrial production of the frozen green flour product.