166 results about "Amylopectin" patented technology

The invention discloses an in-situ crosslinking-self-degradation high-strength gel temporary plugging agent and a preparation method thereof, and belongs to the technical field of oil-gas field development. The gel temporary plugging agent is prepared from the following substances in parts by weight: 0.33 to 2.33 parts of polyvinyl alcohol, 0.67 to 4.67 parts of corn amylopectin, 2.8 to 7.0 parts of acrylamide, 1.2 to 3.0 parts of N-vinyl pyrrolidone, 0.05 to 1.05 parts of a cross-linking agent, 0.001 to 0.06 part of an initiator, 0.3 to 2.1 parts of glycerol, 0.02 to 0.14 part of calcium chloride and the balance of water, and the sum of the parts by weight of the substances is 100 parts. The preparation method is simple and convenient to operate, raw materials are low in price and easy to obtain, the preparation process is controllable, and huge industrial popularization prospects are shown. The gel temporary plugging agent is used for a reservoir temporary plugging steering process, can be self-degraded under the condition of constant temperature of a stratum, and has important significance for realizing efficient development of an oil field and improving the oil and gas recovery ratio.

The invention relates to a composition for use in a manufacture of paper, board or the like. The composition comprises a mixture of cationic starch having amylopectin content of at least 85%, and an amphoteric polymeric structure comprising structural units originating from non-ionic monomers, preferably (meth)acrylamide, anionic groups and cationic groups, the polymeric structure comprising cationic groups at least 0.2 mol-%.

The invention discloses a pH-responsive low-temperature gel temporary plugging agent and a preparation method thereof, and belongs to the technical field of oil-gas field development. The pH response type low-temperature gel temporary plugging agent is prepared from the following substances in parts by weight: 2.8 to 5.7 parts of acrylamide, 1.4 to 2.6 parts of 2-acrylamido-2-methylpropanesulfonic acid, 0.05 to 1.04 parts of a cross-linking agent, 0.01 to 0.1 part of an initiator, 2 to 3.33 parts of amylopectin, 1 to 1.67 parts of sodium alginate, 0.27 to 0.35 part of acetic acid, 2.14 to 2.61 parts of sodium acetate, 0.9 to 1.5 parts of glycerol and the balance of water, and the sum of the parts by weight of the components is 100. The cross-linking agent is obtained by synthesizing dihydrazide and diacetone acrylamide. The gel temporary plugging agent is easy and convenient to prepare, raw materials are cheap and easy to obtain, and the production process is controllable. The fracturing fluid is applied to a temporary plugging diversion fracturing process of a low-temperature tight oil reservoir, and has important significance on efficient development of oil and gas fields.

The invention discloses a water-soluble fertilizer containing modified nano double-chelated medium trace elements, and belongs to the technical field of biological agriculture. The fertilizer is composed of sorbitol, glycerin, EDTA iron, EDTA zinc, potassium citrate, calcium citrate, magnesium sulfate heptahydrate, disodium ethylene diamine tetraacetate, an auxiliary agent and the like. The auxiliary agent is prepared from carboxymethyl chitosan, a modified nano auxiliary agent and polyethylene glycol, and the modified nano auxiliary agent is prepared from amylopectin, 8-hydroxyquinolone and isopropyl tri (dioctyl pyrophosphate acyloxy) titanate through a reaction. By adopting a double-chelation technology and a nanotechnology, the stability of trace elements in the fertilizer is remarkably improved, and nutrients are prevented from being lost and fixed in soil. And the absorption efficiency of the plants on elements such as iron, zinc and magnesium is improved by the nano-scale particles and the chelated nutrients. Field tests show that the fertilizer can significantly promote the growth of mung bean sprouts and improve the biomass and the content of medium trace elements in plants.

The invention belongs to the technical field of gene engineering, and particularly relates to application of a TaMGD3 gene in improvement of plant starch quality and cultivation of a high-starch transgenic plant, including application of the TaMGD3 gene in promotion of wheat grain starch synthesis, application of the TaMGD3 gene in cultivation of the high-starch and / or high-amylopectin transgenic plant, and application of the TaMGD3 gene in improvement of plant starch quality and cultivation of the high-starch and / or high-amylopectin transgenic plant. The invention also discloses an application of the TaMGD3 gene in improvement of plant starch characteristics. A nucleotide sequence of the TaMGD3 gene is shown as SEQ ID NO. 1. The invention also provides a cultivation method of transgenic wheat. In wheat cultivation, wheat amylopectin quality improvement is realized through overexpression of the gene shown in SEQ ID NO.1. The TaMGD3 gene can improve the starch content of wheat grains, influence the particle size distribution of the wheat grain starch, improve the amylopectin proportion, improve the peak viscosity and the relative crystallinity of the starch, and facilitate the improvement of the cooking quality related to the wheat starch.

The banana transcription factor MabZIP2 disclosed by the invention is combined with a banana fruit MaLSF1 gene promoter to regulate up-regulated expression of the banana fruit MaLSF1 gene. The MabZIP2 expression is instantly silenced, the expression quantity of the MaLSF1 is reduced, the degradation of banana pulp starch is inhibited, and the content of total starch, amylose and amylopectin is increased, so that the sweet taste of banana fruits is favorably improved, and the quality of bananas is improved; the hardness of the banana pulp is improved, the softening of the banana after picking can be delayed, the ripening of the banana fruit after picking is delayed, and the storage period of the banana fruit is prolonged. The banana transcription factor MabZIP2 provides an important gene resource for improvement of banana fruit quality, provides a theoretical basis for research and development of a banana fresh-keeping technology and cultivation of new storage-resistant varieties, and also provides a new way for research and development of a fresh-keeping technology of starch storage type fruits such as bananas, molecular design breeding and cultivation of new storage-resistant banana varieties.

The invention discloses a composite sewage treatment agent and a preparation method thereof, and belongs to the technical field of sewage treatment. The composite sewage treatment agent disclosed by the invention is prepared from the following raw material components in parts by mass: 10 to 12 parts of starch-based flocculating agent, 0.8 to 1.2 parts of modified bimetallic biochar and 0.7 to 0.8 part of 2, 4, 6-tri (4-ethynyl phenyl)-1, 3, 5-triazine, wherein the starch flocculant is obtained by carrying out graft copolymerization on an active monomer and amylopectin and then introducing carbazole through Ullmann reaction, and the active monomer at least comprises acrylamide, methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and N, N-diallylaniline; the modified bimetal biochar is prepared from bimetal biochar modified by 3-bromopropyl trimethoxy silane, and the modified bimetal biochar is prepared from the modified bimetal biochar modified by the 3-bromopropyl trimethoxy silane modified bimetal biochar. The bimetallic biochar is obtained by loading nano-iron and molybdenum disulfide in two steps through a calcination method and a hydrothermal method by taking straw biomass as a raw material.

The invention discloses a method for accurately identifying sweet-waxy corn germplasm, and particularly relates to a method for identifying sweet-waxy corn germplasm, which comprises a first tracking process: a process from F3-generation seed budding to F4-generation seed maturation, including sweet-waxy gene DNA tracking marking after seed budding; sampling once 28 days after pollination, and measuring the thickness of soluble sugar, amylose, amylopectin and pericarp; extracting DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) of F3-generation plants in a After the F4-generation seeds are mature and picked, determining sweet-waxy gene DNA, determining amylose and amylopectin, and determining single-plant grain weight, hundred-grain weight and endosperm / embryo dry weight; a second tracking process: a process from germination of the F4-generation seeds to bearing of fresh sweet-waxy corn, including observation and recording of a field corn plant growth process; measuring the thickness of soluble sugar, amylopectin, amylose and pericarp 15 days after pollination; determining and analyzing the traits of the indoor test species; data analysis and germplasm scoring: comparing and analyzing the data obtained in the second tracking process, scoring the F4-generation seeds, and determining the germplasm quality of the F4-generation seeds.

The invention discloses a photo-thermal catalyst for converting waste starch plastic into amylose as well as a preparation method and application of the photo-thermal catalyst. The photo-thermal catalyst mainly comprises a halogen-containing thermal catalyst capable of playing a role at a certain temperature and a photo-thermal conversion agent capable of playing a photo-thermal conversion role under illumination; the invention mainly relates to a confined halogen-containing thermal catalyst, a halogen-modified thermal catalyst, a non-confined halogen-containing thermal catalyst, a modified halogen-containing thermal catalyst and a photo-thermal conversion agent with a photo-thermal effect. The photo-thermal catalyst provided by the invention can convert more than 70% of amylopectin in starch into amylose, so that high-value amylose is recovered from waste starch plastic. The technology provided by the invention does not involve an organic solvent, a high temperature and an inert gas atmosphere, and the reaction product is simple and convenient to separate. The technology is suitable for recycling various waste starch plastics and mixed plastics of starch plastics and other plastics.

The invention discloses a modified glutinous rice flour auxiliary material for controllable release medicine tablets and a preparation process of the modified glutinous rice flour auxiliary material, and relates to the technical field of biological medicines.The multifunctional auxiliary material with a specific microstructure and corrosion dynamic characteristics is obtained by taking glutinous rice flour with the amylopectin content larger than or equal to 80% as a raw material and conducting a three-stage process of pretreatment, directional modification and aftertreatment; the tablet has the functions of filling, bonding, disintegrating or skeleton controlled release, and can accurately regulate and control the drug release according to the dosage form demand. The invention aims to solve the problems that the traditional auxiliary material has a single function and is difficult to adapt to the release requirements of multiple types of drugs, realizes the multifunctional integration of the natural auxiliary material and the controllability of the release behavior, and remarkably improves the suitability of the preparation and the process stability.

The invention relates to the field of bioengineering, in particular to a construction method and application of an amylopectin ternary nano assembly with a high assembly index. The invention provides a construction method of a ternary nano assembly. The construction method comprises the following steps: S1, extracting amylopectin of bulk crops by adopting an ethanol sedimentation method; s2, extracting endogenous lipids of fruits of completely mature bulk crops by adopting a supercritical carbon dioxide extraction method; s3, extracting endogenous proteins of fruits of immature bulk crops by adopting an isoelectric precipitation method; s4, the amylopectin, the endogenous lipid and the endogenous protein are subjected to a self-assembly reaction, and the ternary nano assembly is obtained. The particle size of the ternary complex can reach nanometer, and the ternary complex is high in CI, high in SDS content, low in multi-stage digestion rate, stable in blood sugar release process and good in chewiness.

The invention discloses a black fungus AMY protein and a coding gene and application thereof, and belongs to the technical field of protein engineering. The invention provides a black fungus AMY protein as well as an encoding gene and application thereof in order to excavate a key enzyme gene of a starch sucrose metabolic pathway in black fungus, and discovers and verifies that the black fungus AMY protein and the encoding gene thereof play a key regulation and control role in inducing synthesis of black fungus alpha-amylase through transcriptome sequencing. A solid foundation is laid for deeply exploring the function of a key gene of a starch sucrose metabolic pathway.

The invention discloses an oilseed rape-sorghum-autumn cucumber planting method based on cooperation of oilseed rape and vegetables, and the method comprises the following steps: sowing oilseed rape in late September; in late October, when the oilseed rape grows to 3-5 leaves, transplanting the oilseed rape to a field; sowing sorghum in the middle ten days of March of the next year; in early April of the next year, when sorghum grows to a three-leaf stage, transplanting; in the middle ten days of April of the next year, harvesting oilseed rape, and then threshing; in late July of the next year, harvesting sorghum, and then threshing; sowing autumn cucumbers in early August of the next year; and harvesting autumn cucumbers from late September to mid-October. Compared with a conventional planting mode, the rape yield can be increased by 4.7%, the sorghum yield can be increased by 6.8%, the total starch content and the amylopectin content of sorghum grains can be increased by 1% and 0.7% compared with rape and sorghum crop rotation, and the income per mu can be increased by 3519 yuan, 1743 yuan and 1132 yuan compared with oil field crop rotation, sorghum single cropping and rape-sorghum relay cropping. According to the planting method, variety selection is accurate, crop rotation connection is seamless, high economic benefits are achieved, and the planting enthusiasm of farmers can be promoted.

The present disclosure relates generally to a dough composition including one or more legume flours present in a total amount in the range of 40-70 wt%, based on the weight of the dough composition; a film-forming starch present in an amount in the range of 5-20 wt%, based on the weight of the dough composition, the film-forming starch having an amylopectin content of at least 80 wt%, an RVA final viscosity after 1 hour at 25°C of no more than 900 centipoise, and an RVA peak-and-breakdown time of no more than 500 s at 25°C; one or more oils or fats present in a total amount in the range of 5-30 wt%, based on the weight of the dough composition; and water present in an amount in the range of 10-40 wt%, based on the weight of the dough composition.

The invention discloses a modified starch composition as well as a preparation method and application thereof, and relates to the technical field of new materials. Comprising the following steps: adding oxidized amylopectin, modified chitosan and kappa-carrageenan into deionized water, heating to 70-90 DEG C while stirring, continuously stirring, sequentially adding anthocyanin, epsilon-polylysine, catechin, ferulic acid, composite zinc nanoparticles, modified montmorillonite, a sodium alginate compound and synergistic particles, uniformly stirring, and carrying out ultrasonic treatment, so as to obtain a finished product. The modified starch composition is obtained. The tea tree essential oil is introduced into the synergistic particles, so that the fresh-keeping capability of the modified starch composition is effectively improved; and by adding the components such as the composite zinc nanoparticles and the sodium alginate compound, the thermal stability and the mechanical property of the material are further improved. Therefore, the modified starch composition disclosed by the invention has a wider application prospect in the fresh-keeping aspect of fruits, vegetables and fresh meat.

Provided herein are compounds comprising derivatives of dual GLP-1 / amylin receptor agonists and methods of use thereof.

The present invention provides an SV molecular marker related to the amylopectin and amylose contents of cassava and its application, belonging to the field of molecular biotechnology. The SV molecular marker is Chr14_26344949_26345058, which is used to predict the amylopectin and / or amylose contents of cassava; the primer set for amplifying the SV molecular marker includes: the forward primer has a sequence of 5'-AGATCATTCAGCCCATTT-3'; the reverse primer has a sequence of 5'-ATCCACCAAAGTTCGTAA-3'; a kit is prepared using this primer set; the DNA of the cassava to be tested is subjected to PCR amplification using the above primer set or the above kit to predict the amylopectin and / or amylose contents of cassava. The SV molecular marker of the present invention can accurately and efficiently predict the high or low amylopectin and amylose contents of cassava without waiting for the cassava to grow into a mature plant by planting, greatly improving the breeding selection efficiency.

The present invention relates to a method of reducing the body weight of a subject, the method comprising administering to the subject about 1 mg to about 15 mg of an amylin receptor (AMYR) agonist. Also provided are corresponding compositions and kits.

The invention relates to the technical field of kitchen utensil equipment, in particular to a rice steaming system with water circulation sugar reducing and circulation steam uniform heating functions, which comprises a box body, moving wheels are mounted at the bottom of the box body, a sealing door is rotatably connected to the front surface of the box body, and a control console is mounted at the top of the box body. A shelf board is fixedly installed on the inner wall of the box body, a driving box is fixedly installed on the back face of the box body, and a driving assembly is installed on the inner wall of the driving box. Water in the water storage barrel flows into the rice steaming bin through the water inlet pipe by adopting the water pump and then flows out through the return pipe to repeatedly wash rice which is being steamed in the rice steaming bin, so that part of amylopectin of the rice is lost, the amylopectin structure is relatively loose, and the amylopectin is more easily decomposed into glucose in the digestion process, so that the blood sugar is increased; the purpose of reducing blood sugar is achieved by repeatedly washing away amylopectin, the taste is further improved, after washing is completed, the water storage barrel is heated, steam flows into all the dishes through the steam pipe, and rice in each dish is evenly cooked.

The present disclosure relates generally to a dough composition including one or more legume flours present in a total amount in the range of 40-70 wt%, based on the weight of the dough composition; a film-forming starch present in an amount in the range of 5-20 wt%, based on the weight of the dough composition, the film-forming starch having an amylopectin content of at least 80 wt%, an RVA final viscosity after 1 hour at 25°C of no more than 900 centipoise, and an RVA peak-and-breakdown time of no more than 500 s at 25°C; one or more oils or fats present in a total amount in the range of 5-30 wt%, based on the weight of the dough composition; and water present in an amount in the range of 10-40 wt%, based on the weight of the dough composition.

The invention discloses a traditional modern fusion type intelligent brewing process and system for Moungu Qinglian wine, and belongs to the technical field of white spirit brewing. According to the process, the accurate proportioning (25: 10: 35: 20: 10) of glutinous rice (amylopectin is greater than or equal to 80%), lotus seeds (starch is greater than or equal to 60%) and other raw materials is realized through an Internet of Things weighing system; the temperature and humidity (25 + / -2 DEG C / 75 + / -5%) of the cellar are dynamically regulated and controlled by adopting an LSTM model, and the rancidity rate is smaller than or equal to 1% by combining with caproic acid bacteria (larger than or equal to 106 CFU / g) enriched in the yellow water extract; quality-based liquor picking is realized based on near infrared spectrum and machine vision (the premium grade rate of middle-stage liquor is 92%); 12 flavor substances serve as input through a BP neural network, and a blending ratio (flavor similarity is larger than or equal to 98%) is output; and full-process tracing is realized by adopting a block chain technology. The wine yield is greater than or equal to 37.8% and is improved by 15.2% compared with that of a traditional process, the stability of ethyl hexanoate is improved by 68%, and the technical problems of inaccurate raw material ratio, uncontrollable fermentation, poor flavor stability and the like in the traditional process are solved.

This invention belongs to the field of molecular biology technology, specifically relating to a... ZmTHX12 The application of biological products in improving corn kernel quality and yield, the aforementioned ZmTHX12 The nucleotide sequence of the gene is shown in SEQ ID NO.1, and the amino acid sequence is shown in SEQ ID NO.2. This invention discovers... ZmTHX12 It can regulate the quality and yield traits of corn kernels, and in corn... ZmTHX12 Gene mutations can increase the protein and soluble sugar content in kernels, and can be used to improve the quality traits of corn; while ZmTHX12 ZmTHX12 Gene overexpression leads to increased oil and amylopectin content in kernels, resulting in larger kernels and increased 100-kernel weight, which can be used to improve maize yield and quality traits. This discovery not only provides a scientific basis for understanding the development mechanism of kernels but also offers theoretical guidance for the genetic improvement of maize.

The invention discloses a humidity-driven soft actuator and a preparation method thereof, the actuator takes a patterned black polyimide (PI) film as a substrate, and the substrate is compounded with two-dimensional transition metal carbide Ti3C2Tx (MXene) / amylopectin amp; a functional layer is formed by Amylose / carbon nanotubes (CNTs), when the functional layer absorbs moisture and expands, the actuator is bent towards the PI side, and when the functional layer is dehumidified and contracts, the actuator is bent reversely; the bending response direction is defined through the substrate gap direction of nanosecond laser machining, and the initial curvature and the bending degree are regulated and controlled through vacuum hot pressing treatment. The components cooperate to endow the actuator with rapid humidity response capability and excellent mechanical stability. The technical problems that an existing humidity driving actuator is poor in programmability and an interface is prone to stripping are solved, an external driving source is not needed, the technology is simple, convenient and controllable, and the potential application value in the fields of soft robots, flexible intelligent equipment and the like is shown.

The application belongs to the technical field of microorganisms, and discloses a lactic acid bacteria preparation for improving the yield and quality of waxy corn and application thereof. The active bacteria in the lactic acid bacteria preparation are Lactobacillus casei C-9 strains, and the strain preservation number of the C-9 strains is CGMCC No. 6734. The application is at least one selected from the following: A, improving the yield of waxy corn; B, improving the amylopectin content, soluble sugar content and total amino acid content in waxy corn kernels; C, improving the taste and flavor of waxy corn; and D, enhancing the stress resistance of waxy corn. The application uses Lactobacillus casei C-9 bacterial liquid for waxy corn planting, solves the problems of soil physicochemical property deterioration, soil microbial community imbalance, soil fertility decline and environmental pollution caused by chemical fertilizers through the combined mode of seed treatment, base fertilizer application, leaf surface spraying and root irrigation.

The application belongs to the technical field of molecular genetics, and particularly relates to a gene related to corn kernel quality and application, and a nucleotide sequence of the gene is shown as SEQ ID NO. 1. The gene provided in the application has the function of regulating the content of asparagine, tryptophan, phenylalanine, histidine, arginine and serine in corn kernels, and the content of amylose, amylopectin and total starch. The knockout mutant of the gene created by gene editing technology increases the content of asparagine, tryptophan, phenylalanine, histidine, arginine and serine in corn kernels, and the content of amylose, amylopectin and total starch, and unexpectedly reduces plant height and ear height, which is beneficial to simultaneously increasing corn yield and quality, and improving variety density tolerance.

The present application relates to a kind of oil control acne raw material composition, preparation method and its application, composition includes the following components according to concentration percentage: 70%-80% hydroxyapatite, 5%-15% salicylic acid, 6%-6.5% amylopectin, 3%-7% dextrin and 2.75%-4.75% xanthan gum.The preparation method of composition includes the following steps: step 1, preparation SA-200, salicylic acid solution is mixed with dextrin aqueous solution, and linear amylopectin and xanthan gum are added to the mixed solution, ultrasonic treatment 10min, after 120min stationary SA-200 solution is obtained;Step 2, preparation hydroxyapatite aqueous solution;Step 3, using hydroxyapatite embedding SA-200, SA-200 solution is mixed with hydroxyapatite aqueous solution, ultrasonic treatment 10min, after 120min stationary oil control acne raw material composition is obtained.It is by using hydroxyapatite as carrier, carries out secondary embedding treatment, aims at improving the light stability of salicylic acid, the stability in cosmetics, improves skin feeling and enhances the oil control performance to skin.

The invention relates to aqueous adhesive compositions which contain at least the following components: (a) 1 to 95 wt. %, calculated as the solids content of a base component, containing: (a1) at least one polymeric organic binder, selected from acrylate, styrene, vinyl acetate, vinyl propionate and / or urethane homopolymers or copolymers, or any mixture thereof, and / or (a2) at least one polysaccharide thickener, selected from the group consisting of cellulose ethers, such as methyl cellulose, carboxyalkyl cellulose, in particular carboxymethyl cellulose, hydroxyalkyl cellulose, alkyl hydroxyalkyl cellulose, starch, in particular potato starch, starch ethers, in particular modified amylose and / or amylopectin, guar ethers, dextrins and mixtures of said compounds; (b) water; and (c) 0.03 to 1.4 wt. % guanidine and / or at least one salt of guanidine, wherein the proportion by weight refers to the content of guanidine in the total aqueous adhesive composition.

The invention belongs to the field of molecular genetics, and provides a rice SS3a allele and application thereof in increasing the content of resistant starch in rice and reducing the glucose generation rate. The gene is deleted at the 2387th basic group G of the third exon of the rice SS3a gene and contains a gene sequence as shown in SEQ ID No. 1. The allele can significantly increase the amylose content in rice and change the amylopectin structure, so that the resistant starch content of rice is significantly increased, and the glucose generation rate of rice is reduced. Meanwhile, the allele can also significantly improve the gelatinization characteristic and the viscosity characteristic of the rice, and has small influence on the grain weight of the rice. The invention further relates to application of the new SS3a allele in rice breeding, the allele can be introduced through a cross breeding method, or the original SS3a gene is subjected to site-directed mutagenesis to form the allele, and the allele is used for cultivating a new high-resistance starch rice strain.

The invention relates to polyester base cloth for a waterproof roll and a preparation method of the polyester base cloth, and belongs to the technical field of non-woven materials. The polyester base fabric for the waterproof coiled material comprises the following components in percentage by mass: 80-85% of polyester filament spun-bonded needle-punched non-woven fabric and 15-20% of cassava starch glue coated on the surface of the polyester filament spun-bonded needle-punched non-woven fabric. The polyester base fabric for the waterproof coiled material is prepared by coating a polyester filament spun-bonded needle-punched non-woven fabric with cassava starch glue and drying the polyester filament spun-bonded needle-punched non-woven fabric. By utilizing the low-temperature gelatinization characteristic of cassava starch, the impregnation temperature is reduced, and the heat energy consumption is reduced; the viscosity and penetration depth of cassava starch glue are balanced by adjusting the solid content of cassava starch steeping liquor, and the stability of the preparation process of the polyester base cloth for the waterproof roll is improved; by utilizing the characteristic of high amylopectin content in cassava starch, starch glue with a loose gel network is formed on the surface of the polyester base cloth for the waterproof roll, so that the flexibility and the anti-aging characteristic of the starch glue are improved.

The invention provides extruded cooked noodles and a preparation method thereof, and belongs to the technical field of foods. The invention provides extruded cooked noodles which are prepared from the following raw materials in percentage by mass: 20-80% of wheat flour and 20-80% of cassava starch. According to the extruded cooked noodles provided by the invention, the wheat flour and the cassava starch are compounded, and under the synergistic effect of a good gel network and high amylopectin content of the cassava starch and a gluten protein network in the wheat flour, the prepared extruded cooked noodles are soft and smooth in mouth feel, and have very good tensile property and cooking quality; compared with common extruded cooked noodles, the texture characteristics of the noodles are obviously improved.