257 results about "Amylose" patented technology

The invention belongs to the technical field of soil conditioners, and particularly relates to a rice field soil conditioner and application thereof. The invention relates to a rice field soil conditioner. The rice field soil conditioner is composed of a compound fertilizer and a complex microbial inoculant, the compound fertilizer is prepared by mixing the following components in parts by weight: 20-30 parts of rice husk biochar, 20-30 parts of shell powder and 10-15 parts of potassium fulvate, the complex microbial inoculant is prepared by mixing the following components: 3-4 parts of paenibacillus polymyxa; 2 to 3 parts of bacillus marinus; and 1.5 to 2 parts of bacillus firmus. The soil conditioner is composed of a compound fertilizer and a complex microbial inoculant, the complex microbial inoculant is formed by mixing three microbial inoculants of paenibacillus polymyxa, paenibacillus marinus and bacillus firmus, and the soil conditioner is beneficial for improving soil fertility and increasing the thousand seed weight of rice, so that the yield of the rice is increased. And the chalky grain rate of the rice can be reduced, the rice roughness, the head rice rate, the amylose content, the gel consistency and the like can be improved, the rice quality can be improved, and the economic benefit of the rice can be improved.

This invention discloses a method for preparing low-GI special dietary noodles, belonging to the field of special dietary food development. This invention screens negatively charged dietary polysaccharides and constructs a tightly packed quaternary network structure based on amylose, oleic acid, protein, and dietary polysaccharides. It prepares an amylose-oleic acid complex (complex 1) and a complex 1-protein ternary network (complex 2) stepwise, and then regulates the cooking process to form a complex 2-dietary polysaccharide quaternary network (complex). This invention significantly reduces the GI value of the noodles and improves their texture.

The invention provides a full-degradable polymer composite material for tableware and a preparation method of the full-degradable polymer composite material, and belongs to the technical field of polymer materials. According to the invention, amylose corn starch, hydrophobic modified corn starch, cassava acetylated distarch phosphate, a polylactic acid-poly (butylene succinate) interpenetrating network structure material, a copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate, polycaprolactone, stearic acid modified micron titanium dioxide, chitosan quaternary ammonium salt and a composite plasticizer are adopted according to a specific ratio; the fully-degradable polymer composite material is obtained by compounding the composite heat stabilizer and stearic acid, has controllable and good biodegradability and good mechanical properties, enhances heat stability, improves processability, makes all the components easier to mix uniformly, facilitates molding processing of the material, and improves production efficiency and product quality.

The invention discloses a preparation method of an esterified modified starch derived hard carbon negative electrode material and application of the esterified modified starch derived hard carbon negative electrode material in a sodium-ion battery, and belongs to the technical field of sodium-ion battery negative electrodes. The preparation method comprises the following steps: firstly, carrying out one-step hydrothermal pretreatment on cheap cross-linked-esterified composite modified starch, and then carrying out one-step high-temperature carbonization to obtain the spherical hard carbon negative electrode material. And the compact stacking density formed by the spherical morphology is beneficial to shortening the diffusion path of ions and electrons. The acetyl group replaces part of hydroxyl groups in starch molecules, so that the content of amylose is reduced, the structural stability of the starch is enhanced, and the sodium storage performance is improved. In addition, the hard carbon negative pole piece is subjected to sodium pre-treatment through a liquid-phase sodium pre-treatment technology, so that the first efficiency of the battery is improved, and the long-cycle stability is promoted. The preparation process has the advantages of simple steps, simple equipment, good repeatability, no need of large-scale subsequent treatment, and suitableness for large-scale production.

A series of independent human-induced non-transgenic mutations found at one or more of the SBEII genes of wheat; wheat plants having these mutations in one or more of their SBEII genes; and a method of creating and finding similar and / or additional mutations of SBEII by screening pooled and / or individual wheat plants. The seeds and flour from the wheat plants of the present invention exhibit an increase in amylose and resistant starch without having the inclusion of foreign nucleic acids in their genomes. Additionally, the wheat plants of the present invention exhibit altered SBEII activity without having the inclusion of foreign nucleic acids in their genomes.

The invention belongs to the technical field of detection methods, and particularly relates to a liquid chromatography detection method for an idedecalciferol intermediate and impurities thereof. According to the liquid chromatography detection method for the eldecalciferol intermediate and the impurities thereof, a liquid chromatography method is combined with an electrospray detector for detection; chromatographic conditions are as follows: an amylose-tri (3-chlorphenyl carbamate) covalently bonded silica gel chromatographic column is adopted; and carrying out gradient elution by taking water as a mobile phase A and acetonitrile as a mobile phase B. The method for detecting the eldecalciferol intermediate and the impurities of the eldecalciferol intermediate is good in specificity, high in sensitivity and accuracy, good in repeatability and stability and high in analysis speed, the content of the eldecalciferol intermediate and the impurities of the eldecalciferol intermediate can be rapidly and accurately detected, and the blank of detection of the eldecalciferol intermediate and the impurities of the eldecalciferol intermediate in the prior art is filled.

To provide cooked rice for freeze-drying having excellent grain mouthfeel, grain separation, and fluffiness, as well as freeze-dried rice and freeze-dried processed food using the cooked rice.SOLUTION: Cooked rice for freeze-drying of the present invention is prepared by cooking 100 pts.mass of raw rice having an amylose content of 19.2 mass% or less and a protein content of 7.5 mass% or less (dry basis), followed by adjustment to 210 to 290 pts.mass through water-washing adjustment and draining steps. Freeze-dried rice or freeze-dried processed food of the present invention is prepared by freeze-drying the cooked rice for freeze-drying, or by adding a seasoning liquid thereto.SELECTED DRAWING: Figure 1

The invention discloses a method for reducing cyanide in the grain moistening process of Maotai-flavor liquor, and belongs to the technical field of liquor brewing. The brewing raw material sorghum is subjected to gamma-ray irradiation pretreatment, and an abscisic acid solution is applied for multiple times in the grain moistening step in the brewing process. According to the method, 60Co-gamma ray irradiation and abscisic acid solution treatment are combined, the content of cyanogenic glycoside in baijiu brewing is controlled from the source, the content of cyanogenic glycoside in baijiu is remarkably reduced on the premise of not changing indexes such as moisture, crude protein, crude fat, total ash content, amylose and reducing sugar related to the quality of sorghum, and the quality of the baijiu is improved. And 105221.56 [mu] g / kg of a blank control group is reduced to 1395.32 + / -164.29 [mu] g / kg.

The invention relates to the technical field of environment-friendly materials, and discloses an environment-friendly plastic bag which is of a three-layer composite structure composed of the following raw materials in parts by weight: an outer layer, 60-80 parts of polylactic acid, 40-60 parts of poly (adipic acid) or butylene terephthalate with a thickness ratio of 40%, and a middle layer, 75-90 parts of modified cassava starch, 25-35 parts of polyvinyl alcohol and 3-8 parts of a citrate cross-linking agent with a thickness ratio of 30%. The inner layer comprises 80-95 parts of polyhydroxybutyrate valerate and 15-25 parts of surface treatment calcium carbonate, the thickness ratio of the inner layer is 30%, the three layers are integrally formed through a co-extrusion film blowing process, and a micron-sized groove array is arranged on the surface of the outer layer. The outer layer adopts the blend of polylactic acid and dibutyl phthalate, the brittleness of polylactic acid is made up by utilizing the flexibility of dibutyl phthalate, and meanwhile, the use amount of pure polylactic acid is reduced, so that the cost is reduced by 40% compared with that of a pure polylactic acid bag; and 15 wt% of stearic acid is added into the inner layer polyhydroxybutyrate valerate to treat calcium carbonate, so that the performance is ensured, and the cost is controlled at the same time.

The invention relates to the technical field of breeding of new varieties of crops, in particular to a method for rapidly breeding a new variety of wheat with high resistant starch based on four specific characters. According to the breeding method provided by the invention, the high-resistance starch variety is rapidly, accurately and successfully bred on the basis of EMS mutagenesis and selection of multiple specific physical and quality characters of different generations, the Shannong RS1 # with the resistant starch content up to 11.8% and the amylose content up to 60% or above is obtained through the method, breeding only takes 6 years, and the breeding period is shortened by 4 years or above.

The invention provides butyrylated high-amylose corn starch and a preparation method thereof, and belongs to the technical field of starch modification. The invention provides a preparation method of butyrylated high-amylose corn starch. The preparation method comprises the following steps: 1) mixing corn starch and water to prepare a starch suspension; (2) putting the starch suspension into a microwave reactor, adding a potassium carbonate solution while stirring, and continuously stirring for 3-5 minutes after the potassium carbonate solution is added; (3) simultaneously dropwise adding a potassium carbonate solution and succinic anhydride into the starch suspension after the step (2) is completed, waiting for 3-5 minutes, then adding the potassium carbonate solution, and obtaining a product after the reaction is completed; and 4) adjusting the pH value of the product by using a hydrochloric acid solution, filtering, washing, drying and crushing to obtain the butyrylated high-amylose corn starch.The prepared product is low in viscosity and good in stability, the water solubility, the expansibility and the ageing resistance are obviously improved, and the method can be used for large-scale production of the butyrylated high-amylose corn starch.The method has the advantages that the method is simple, and the yield is high.

The invention discloses heat-resistant alpha-glucan phosphorylase and application thereof in synthesis of amylose with different molecular weights, and belongs to the field of genetic engineering and modern enzyme technology engineering. The alpha-glucan phosphorylase derived from the Dictyoglomus. Sp.NZ13RE01, provided by the invention, has a relatively high optimum temperature and excellent thermal stability, and can be used for preparing the alpha-glucan phosphorylase from the Dictyoglomus. Sp.NZ13RE01. When the alpha-glucan phosphorylase is used for synthesizing amylose, the alpha-glucan phosphorylase from the source can be used for synthesizing amylose with different molecular weights under the condition of cellobiose / G4 primers in different proportions, and under the condition that the proportion of cellobiose / maltotetraose primers is 1: 4, the excellent conversion rate is 34.52%, the yield is 17.26 g / L, and the yield is 17.26 g / L. The average molecular weight is 5040 + / -26.75 g / moL, so that the method is suitable for producing amylose in a small molecular weight range, and therefore, the method has a good application prospect in an artificially synthesized starch system.

The application discloses a kind of umami extract, belong to food field.The preparation method of the umami extract with clam meat as raw material, after fermentation by specific strain, then the fermentation liquor is subjected to enzymolysis by specific composition of composite enzyme, filtration, irradiation treatment and freeze-drying is prepared.The step of fermentation before enzymolysis in the present application, through the synergistic effect of microorganism and composite enzyme can effectively avoid the generation of bitter taste, fishy smell and other undesirable flavors in extract, and the free amino acid content of the umami extract prepared is significantly increased, and the percentage of glutamic acid, aspartic acid and other umami amino acids in total free amino acid is also significantly improved.In addition, the present application also proves by experiment that adding amylose, sugar cane molasses and bonito powder in clam meat slurry during fermentation can further increase the content of free amino acid and the percentage of umami amino acid in umami extract, so that the flavor of the umami extract prepared is better.

The invention relates to the technical field of rice processing, in particular to a rice processing monitoring and early warning method and system based on multi-dimensional data analysis, and the method comprises the following steps: conveying rice to a pneumatic screening device through a conveyor belt for screening; constructing an amylose content model; determining the content ratio of the heavy rice to the light rice; forming a plurality of parts of soaked rice according to the content ratio, constructing a microwave sensor, establishing a regression equation of the initial water content and microwave parameters, and outputting the soaked rice with qualified initial water content; detecting whether the cooled rice is qualified in stirring and giving an alarm; detecting the finished product moisture content of the dried rice and giving an alarm, performing rehydration detection on the dried rice, adjusting the cooling temperature and giving an alarm; according to the rice processing monitoring and early warning method based on multi-dimensional data analysis provided by the invention, the processed rice is effectively screened, and the accuracy of a rice processing monitoring and early warning system is effectively improved while the quality of a finished rice processing process is improved.

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 a method for analyzing and detecting a non-azonetin enantiomer, which adopts normal-phase high performance liquid chromatography and takes normal hexane-ethanol-trifluoroacetic acid as a mobile phase to detect the non-azonetin enantiomer, and the specific chromatographic conditions are as follows: a chromatographic column is prepared by covalently bonding amylose-tri (3, 4, 6-trimethyl-1, 3-pentanediol) on the surface of silica gel; 2, 5-dichlorophenyl carbamate is used as a filling agent (IE, 4.6 * 250 mm, 5.0 [mu] m); a mobile phase: n-hexane: ethanol: trifluoroacetic acid = 500: 500: 1 (V / V / V); the flow rate is 1.0 ml / min; the column temperature is 30 DEG C; the sample size is 20 [mu] l; the detection wavelength is 280 nm; the elution gradient is isocratic elution. The invention provides a high performance liquid chromatography method for analyzing the enantiomer of the fiazonetin, the complete separation of the fiazonetin and the enantiomer of the fiazonetin can be realized by adopting the method, and the separation degree of a main component and the enantiomer is greater than 1.5.

This invention relates to the use of a pregelatinized mixture of amylose-rich starch and soluble fiber with large particle size for coating and varnishing breakfast cereals, enabling the production of breakfast cereals with reduced sugar content.

A series of independent human-induced non-transgenic mutations found at one or more of the SBEII genes of wheat; wheat plants having these mutations in one or more of their SBEII genes; and a method of creating and finding similar and / or additional mutations of SBEII by screening pooled and / or individual wheat plants. The seeds and flour from the wheat plants of the present invention exhibit an increase in amylose and resistant starch without having the inclusion of foreign nucleic acids in their genomes. Additionally, the wheat plants of the present invention exhibit altered SBEII activity without having the inclusion of foreign nucleic acids in their genomes.

The invention relates to the technical field of food processing, in particular to an anti-sticking agent for noodles, easy-to-disperse brewing type instant noodles and a preparation method of the instant noodles. The high-amylose corn starch, the mono-glycerol fatty acid ester, the diglycerol fatty acid ester and the whey protein are creatively compounded to serve as the anti-sticking agent for the noodles, all the components have a synergistic effect, grease is not used for preventing adhesion, and generation of rotten rancidity is reduced. The anti-sticking agent is used as the anti-sticking agent for the instant noodles easy to brew, the market blank that most of anti-sticking agents on the market are only suitable for fresh noodles and cold noodles is filled, and the prepared instant noodles can be cooked after being brewed, and are good in elasticity and sufficient in wheat fragrance. Meanwhile, the instant noodle processing technology is optimized and upgraded, a fan is installed on a production line, moisture on the surfaces of the noodles is blow-dried firstly, then shaping is conducted, the adhesion problem is more effectively solved, investment is small, and industrial application and popularization are easy.

The present invention belongs to the field of molecular biology, and relates to the application of ZmVIM104 protein in regulating the quality traits of maize kernels. The amino acid sequence of the ZmVIM104 protein is shown in SEQ ID NO.2, and the nucleotide sequence of the gene encoding the ZmVIM104 protein is shown in SEQ ID NO.1. The present invention discovers that the ZmVIM104 protein can regulate the quality traits of maize kernels. Mutating the ZmVIM104 gene in maize can increase the soluble sugar content of maize kernels and reduce the contents of protein, oil, amino acids and amylose in maize kernels. This discovery can not only provide a scientific basis for analyzing the development mechanism of kernels, but also provide theoretical guidance for the genetic improvement of maize.

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

The present invention discloses the use of the OsMYB1 gene in regulating rice nutritional indicators and taste quality, belonging to the fields of biotechnology and plant genetic engineering technology. The present invention provides the use of the OsMYB1 gene, the OsMYB1 protein encoded by the OsMYB1 gene, or a biological material with the OsMYB1 gene knocked out, in regulating rice grain nutritional indicators and taste quality. The nutritional indicators include amylose content; the taste quality includes hardness, chewiness, and / or adhesion. The nucleotide sequence of the OsMYB1 gene is shown in SEQ ID No. 1; the amino acid sequence of the OsMYB1 protein is shown in SEQ ID No. 2. The present invention provides a genetic resource for rice breeding, and the application of the OsMYB1 gene in rice breeding has important application value and practical significance.

The application provides a preparation method of corn starch gel and relates to the technical field of food processing.The preparation method of the waxy corn starch gel comprises the following steps: mixing amylose paste and waxy corn starch paste, and obtaining the gel after injection molding and standing; the mass ratio of the amylose in the amylose paste to the waxy corn starch in the waxy corn starch paste is 0-1:2-3.The three-dimensional network structure of the waxy corn starch gel is more uniform and the pore size is smaller after adding the amylose in the waxy corn starch, the amylose is closely covered on the waxy corn starch gel matrix, a more stable network structure is formed, and the gelatinization characteristics of the waxy corn starch are improved.

The invention belongs to the technical field of fish oil refining, and particularly relates to a fish oil purification method. Comprising the following steps: preparing specific free fatty acid adsorption starch; preparing oxygen vacancy carbon composite decolorized hydrotalcite; and refining and purifying the fish oil. The preparation method comprises the following steps: carrying out alkylation treatment on high-amylose corn starch, and subsequently carrying out cross-linking combination on the high-amylose corn starch, template molecule oleic acid of free fatty acid, 3-acrylamido phenylboronic acid, temperature-sensitive N-isopropylacrylamide and pentaerythritol triacrylate, so as to prepare the specific free fatty acid adsorption starch. According to the invention, the starch-lipid mixture can be generated with free fatty acid at a high temperature, the deacidification efficiency is improved, meanwhile, under the modification of an oleic acid specific template, the adsorption amount and adsorption efficiency of the specific free fatty acid adsorption starch on the free fatty acid can be further increased, and the free fatty acid in the fish oil can be efficiently removed; the peroxide value and the acid value of the purified fish oil are reduced.

Provided herein is a method for the enzymatic production of gamma-cyclodextrin from sucrose. Optionally, the method comprises contacting sucrose with one or more enzymes to convert sucrose to amylose, and subsequently contacting the amylose with one or more enzymes to convert the amylose to gamma-cyclodextrin. Optionally, the method produces gamma-cyclodextrin in a high yield compared to alpha-cyclodextrin, beta-cyclodextrin, or both.

The invention discloses a preparation method of zein-starch Pickering emulsion loaded with daidzein and relates to the technical field of emulsion preparation, waxy corn starch is subjected to enzymolysis through pullulanase and is applied to emulsion construction, and the emulsion with good stability is researched to realize efficient loading. The invention also discloses a zein-short amylose composite nanoparticle, a preparation method of a Pickering emulsion stabilized by the composite nanoparticle, and the Pickering emulsion stabilized by the composite nanoparticle. The Pickering emulsion with stable composite nanoparticles prepared by the invention has the characteristics of high stability and high safety, and provides a substitute with a good application prospect for the transportation of a bioactive substance daidzein.

This invention relates to a gene qAC that regulates amylose content in rice and a method for improving amylose content using the qAC gene. The qAC gene includes qAC6.1, qAC6.2, and qAC9.1 genes. The nucleotide sequence of the coding region of the qAC6.1 gene is shown in SEQ ID NO.1, the nucleotide sequence of the coding region of the qAC6.2 gene is shown in SEQ ID NO.3, and the nucleotide sequence of the coding region of the qAC9.1 gene is shown in SEQ ID NO.5. The amino acid sequence of the coding region of the qAC6.1 gene is shown in SEQ ID NO.2, the amino acid sequence of the coding region of the qAC6.2 gene is shown in SEQ ID NO.4, and the amino acid sequence of the coding region of the qAC9.1 gene is shown in SEQ ID NO.6. Through this invention, the rice qAC gene is highly expressed in seeds, specifically improving the amylose content of rice grains without significantly affecting other major agronomic traits of the rice plant. Knocking out the qAC gene in rice using genetic engineering technology can significantly reduce the amylose content of rice and improve the cooking and eating quality of rice. Therefore, the qAC gene has a promising application prospect in the breeding of high-quality rice.

The invention belongs to the field of molecular biology, and discloses application of ZmUUP5 protein in regulation and control of corn kernel quality and yield traits. The amino acid sequence of the ZmUUP5 protein is as shown in SEQ ID NO. 2, and the nucleotide sequence of the ZmUUP5 protein coding gene is as shown in SEQ ID NO. 1. It is found that the ZmUUP5 protein can regulate and control the corn kernel quality and yield traits, mutation of the ZmUUP5 gene in corn can improve the protein content, overexpression of the ZmUUP5 gene can cause grain enlargement and hundred-grain weight increase, the ZmUUP5 protein can be used for improving the corn yield, and the content of amino acid and amylose in grains can also be improved. The discovery not only can provide a scientific basis for analyzing the development mechanism of grains, but also can provide theoretical guidance for genetic improvement of corn.

The present invention provides glutinous wheat flour that gives noodles with moderate firmness and stickiness, and a good texture with a good bite, a noodle mix containing this glutinous wheat flour, and a method for producing this glutinous wheat flour. [Solution] The glutinous wheat flour, including wheat flour obtained from wheat with a triple deletion of the amylose synthesis gene, has an average particle size of 50 μm or less and a maltose value of 200 mg / 10 g or less. The glutinous wheat flour content in the noodle mix is ​​in the range of 10% by mass or more and 50% by mass. The method for producing glutinous wheat flour includes a mixing step in which wheat flour obtained from wheat with a triple deletion of the amylose synthesis gene and other wheat flours are mixed, and the average particle size of this glutinous wheat flour is 50 μm or less and the maltose value is 200 mg / 10 g or less.

The invention provides whole-grain matrix powder of a special dietary food for diabetics and a preparation method of the whole-grain matrix powder, and belongs to the technical field of food processing. Comprising the following steps: adding beans into grains, performing crushing, adding pullulanase and cellulase, performing mixed enzymolysis, after the mixed enzymolysis is completed, adding high-temperature alpha-amylase, performing enzymolysis to obtain standby powder B, performing extrusion puffing, and performing crushing to obtain the whole-grain matrix powder. According to the invention, a certain amount of beans are added into grains, so that reducing sugar and protein are subjected to Maillard reaction, and dextrin, fatty acid and protein are subjected to chemical reaction, so that the flavor and reconstituability of the whole-grain matrix powder are ensured. According to the invention, a multi-enzymolysis combined extrusion puffing process is adopted, so that the contents of amylose and resistant starch in the whole grain matrix powder are increased, and the blood sugar stability of diabetic patients is favorably maintained. Meanwhile, the content of biological accessible polyphenols is also increased, and the blood sugar level of a diabetic patient can be effectively reduced.