531 results about "Amylopectin" patented technology

The present invention relates to a process for making a bread product. The process includes the addition of a non-maltogenic exoamylase that hydrolyses starch to a starch medium, and the application of heat to the starch medium. The non-maltogenic exomylase cleaves one or more linear malto-oligosaccharides, predominantly consisting of from four to eight D-glucopyranosyl units, from non-reducing ends of amylopectin side chains. The non-maltogenic exoamylase has an endoamylase activity of less than 0.5 endoamylase units (EAU) per unit of exoamylase activity.

The invention relates to an optionally foamed sealing composition for preformed seals which can swell when treated with water. The invention also relates to a method for the production thereof out of natural rubber and/or elastomers with a matrix comprised of natural rubber/elastomer components and particle-shaped water absorbing material stored therein. The water absorbing material is a combination of (A) polysaccharide(s) selected from cellulose, starch, starch derivatives removed from grafted starch, amylose, amylopectin, dextran, pectin, inulin, chitin, xanthan, alginic acid, alginates, carrageenan, pustulan, callose, laminarin, guluronic acid, pullulan, lichenin or mixtures of the same with (B) a highly water absorbent synthetic polymer selected from polymers based on (meth)acrylate, poly(meth)acrylic acid and the salts thereof, polyacrylamide, polyalcohols or copolymers of said synthetic polymers. The invention also relates to additional cross-linking and processing auxiliary agents and to property improving agents. It is possible to securely seal superstructures, substructures, tunnels and canals with the assistance of the inventive sealing compositions.

A thixotropic, smooth-flowing liquid, bulk-water-free dentifrice gel/paste that contains a stable mixture of at least one of amylopectin containing discrete solid particles and modified amylopectin containing discrete solid particles, uniformly suspended in and wetted by an inert essentially anhydrous organic hydroxylated liquid matrix material, and which dentifrice gel/paste is characterized by a high surface sheen. Preferably, the modified homopolysaccharide discrete particles contain esterified amylopectin and/or esterified amylose. The dentifrice gel/paste can be used as a toothpaste, a bleaching gel and a brushing gel.

The present invention relates an absorbent material consisting of a molecular network of starch molecules, the starch molecules comprising an amylopectin content of at least 90% (w/w). The molecular network can either be comprised of self-entangled starches or cross-linked starches.

CGTase enzymatically acts on starch, dextrin, amylopectin, and amylose to produce primarily γ-CD, with quantities of β- and α-CD produced being smaller than the quantity of γ-CD produced, has an optimum pH of 10.5-11.0, an optimum temperature of about 60° C., a stable pH of 6-11, and temperature stability, exhibits residual activity of not less than 90 percent with a 15 minute-treatment at 50° C., is produced by culturing a Bacillus clarkii (for example, FERM B-7156), reacts with starch or the like to produce principally γ-cyclodextrin.

The present invention provides a starch that includes at least one glucose polymer having greater than 4% alpha 1-6 glycosidic linkages. The present invention further provides a starch hydrolyzate that includes at least one glucose oligomer having greater than 4% alpha 1-6 glycosidic linkages. The starch and starch hydrolyzate present invention have improved aqueous solution stability and are less likely to retrograde than are solutions of unbranched linear starches or starch hydrolyzates. The present invention further provides a method of improving the aqueous solution stability of a starch or a hydrolyzate thereof, which method includes introducing one or more alpha 1-6 glycosidic linkages so as to branch one or more of the linear polysaccharides or hydrolyzates thereof. The method of the present invention also includes a method of improving the aqueous solution stability of amylose and amylose hydrolyzates by introducing one or more alpha 1-6 glycosidic linkages so as to branch one or more molecules of amylose or hydrolyzate thereof.

The invention discloses an improving method of resistant starch content, which is characterized by the following: adopting starch of straigt-chain starch with content more than 10% as raw material; allocating 3%-25% starch magma; gelatinizing over 78 deg. c; decomposing starch to form multiple straight-chain starch through proflavine enzyme or degrafting hydrolytic starch enzyme; using acid environment with pH value at 3. 5-6. 5 and second and third carboxylic acid functional groups of citrate to crosslink; setting the density of functional group ion at 1%-15% corresponding to starch density; adopting circulating aging technique for 3-4 times under icy point; spraying to dry starch magma; drying in the cylinder and fluid bed; filtering; drying through hot wind.

Disclosed is a method of increasing the low shear rate viscosity and the shear thinning index of aqueous fluids containing a divalent cation salt, a crosslinked amylopectin starch which functions as both a viscosifier/suspending agent and as a fluid loss control additive, and a bridging agent, the fluids resulting from the method, and the use of the fluids in drilling a well, wherein the bridging agent is a sized particulate magnesium carbonate or a mixture of sized magnesium carbonate and sized calcium carbonate. The median (D.sub.50) particle size of the magnesium carbonate is from about 2 .mu.m to about 10 .mu.m. The weight ratio of calcium carbonate to magnesium carbonate is from about 70/30 to about 0/100.

The invention relates to a processing technique for rice. The processing technique comprises the following steps of preliminary screening, drying, secondary screening, cleaning, unshelling, husked rice separation, rice milling, preliminary classification, polishing, screening, color sorting, metering, packaging, warehousing and storing. The drying process comprises the following specific steps of firstly, feeding preliminarily-screened rice into a hot air dryer, and performing drying treatment at the temperature of 40 to 45DEG C until the water content is 15 to 18 percent; and secondly, feeding the rice subjected to hot air drying into microwave drying equipment for performing drying treatment until the water content is smaller than 13 percent. According to the processing technique disclosed by the invention, a drying mode combines a hot air drying method with a microwave drying method, so that the cost of production equipment is reduced and the production efficiency is improved; and more importantly, the content of soluble amylopectin of the rice can be increased, and the rice is enabled to obtain good mouthfeel.

A vaccine composition which comprises an immnunologically active substance embedded in microparticles essentially consisting of starch having an amylopectin content exceeding 85% by weight, of which at least 80% by weight has an average molecular weight within the range of 10-10000 kDa, and without any covalent chemical cross-linking between the starch molecules. A process for preparing such vaccine composition.

A process for producing parenterally administrable microparticles, in which an at least 20% by weight aqueous solution of purified amylopectin-based starch of reduced molecular weight is prepared, the solution is combined with biologically active substance, an emulsion of starch droplets is formed in an outer phase of polymer solution, the starch droplets are made to gel, and the gelled starch particles are dried. A release-controlling shell is optionally also applied to the particles. Microparticles which essentially consist of said starch, have an amino acid content of less than 50 mug and have no covalent chemical cross-linking.

A process for producing parenterally administrable microparticles, in which an at least 20% by weight aqueous solution of purified amylopectin-based starch of reduced molecular weight is prepared, the solution is combined with biologically active substance, an emulsion of starch droplets is formed in an outer phase of polymer solution, the starch droplets are made to gel, and the gelled starch particles are dried. A release-controlling shell is optionally also applied to the particles. Microparticles which essentially consist of said starch, have an amino acid content of less than 50 mug and have no covalent chemical cross-linking.

The invention relates to a fine processing technology of rice. The fine processing technology comprises the steps of preliminary cleaning, microwave drying, clearing, unshelling, separation of rice from brown rice, atomization moistening brown rice, multilevel grinding rice, preliminary classifying, polishing, separating screening, color sorting, ultraviolet irradiating, calculating for packing and storing. According to the fine processing technology disclosed by the invention, microwave drying is additionally performed, so that the content of solubility amylopectin in rice is improved, and the taste of the rice is enhanced; the brown rice is atomized and moistened, and the water content of the brown rice is kept to be 14%-16%, a bran layer and an embryo expand after absorbing water and are softened, extrusion force required for grinding a surface layer can be reduced, crushing and cracks during the process of grinding rice is reduced, the rate of broken rice is reduced, and the rate of entire rice is increased; ultraviolet irradiation is additionally performed, so that residual bacteria or larval cells are destroyed, the expiration date of the rice is prolonged, and the rice is beneficial to human health.

The invention discloses a preparation method of giant spiny frog feed. Premna herbs, pumpkins, chicory and soybeans are taken for use, sesame-seed cake dregs, sweet potato starch, blood meal, fish meal and the like are added as ingredients, and then the process including dosing, thickening, extrusion forming, drying and the like is performed, so that the nutrient health care daily feed taking the shape of an earthworm and used for giant spiny frogs can be prepared finally. In consideration of feeding habits of the giant spiny frogs, the finished feed comprises the tasty blood and fish meal with fishy smell as well as the sesame-seed cake dregs; the sweet potato starch, the premna herb leaves, the pumpkin pectin and the mucilage of soybean milk protein are contained in the feed, so that the surface of the matured feed is smooth, the density of the finished product is enhanced, the toughness is good, and the feed is still cohered when falling into water; the ingredients contain high content of nutrient health care components such as protein, amylopectin and various vitamins and microelements; as the daily feed for the giant spiny frogs, the feed is good in palatability, so that the appetite can be promoted, the daily gain is improved, and the disease resistance of the giant spiny frogs can be enhanced. The feed is low in cost, is adequate and balanced in various nutrient substances, is convenient to process, store and feed, and is high in input-output ratio.

The invention discloses an environmental-friendly amylopectin composite adhesive for paper products and a production method thereof. The composite adhesive is prepared by oxidizing, cross-linking, etherifying and pasting starch to generate a modified starch adhesive, modifying polyvinyl alcohol to be used as a reinforcing agent, adding a preserving agent and a drier, and compounding. The environmental-friendly amylopectin composite adhesive for the paper product has strong initial adhesion and adhesive force, high-speed drying, fast natural air-drying without the phenomenon of wire drawing, corrugation deviation, corrugation-collapse, and the like, favorable cardboard hardness and stiffness, and has no efforescence, and does not absorb moisture. The invention is applied to the glue for producing three domestic corrugated boards and applied to the glue for various paper barrels, paper tubes, cement bag papers, furniture and interior decorations.

The invention relates to starch composition, starch-based film and a preparation method of the starch-based film. The starch composition comprises, by weight, more than 90wt% of straight-chain starch and branched-chain starch. The starch composition is prepared by enzyme digestion and ingredient complexing and is co-mixed with PVA, glycerol, urea and the like and heated to obtain film-casting liquid; after film casting, starch-based film is obtained. The starch composition is high in content of straight-chain starch; the film prepared with the starch composition is less than half as much as the common starch film in water content under the condition of 100% relative humidity, and water resistance is improved significantly; more than 95% of the film can be biologically degraded 60 days after burying, and degradation products are nontoxic and harmless.

The invention relates to a health-care konjak rice glue ball and a preparation method thereof. The preparation method comprises the following steps: preparing rice glue ball powder; preparing stuffing; molding the stuffing; quick-freezing; rolling circles of the molded stuffing; packaging; and refrigerating. In the health-care konjak rice glue ball, the konjaku flour is utilized as a main raw material, the konjac glucomannan in the konjaku flour not only is an excellent water-soluble dietary fiber with low calorie, low fat and high cellulose, but also has an important regulating effect in nutritive equilibrium, functions of losing weight, relaxing bowel and regulating cholesterol metabolism, and obvious curative effects on diseases such as arteriosclerosis, gallstone, constipation, diabetes, obesity and the like, thus being a health-care food; lotus rhizome contains various nutritions, is rich in calcium, phosphonium, ferrum and multivitamins and has various functions of reducing fever and moistening the lung, strengthening the spleen and stimulating the appetite, reducing the blood pressure, arresting hemorrhage and the like, thus being a favorable tonic for the old, the young, women, children and weak patients; and sweet potatoes are rich in multivitamins, amino acid and dietary fiber which are essencial to a human body as well as various mineral substances such as calcium, ferrum and the like, are high in amylopectin content and can be easily digested and absorbed by the human body, thus being a health-care food.

The invention provides a formula for high-moisture cooked rice flour and a fresh-keeping method, and relates to foodstuff and a production process thereof. The invention is characterized in that the formula uses rice as main raw material, and uses amylopectin, denaturation starch, emulsifying agent, reinforcing agent, antiseptic and quality modifying agent as auxiliary materials. The fresh-keeping method includes steps: selecting raw materials, washing, soaking the raw materials, draining, grinding into slurry, adding the auxiliary materials, kneading, boiling, squeezing into filament, cooling and packaging. The formula for high-moisture cooked rice flour and the fresh-keeping method have advantages of industrial production, long storage life, novel process, high rice flour yield, good toughness and good taste.

The invention discloses a method for producing rice-flour noodles, comprising the following steps: selecting early indica rice with the amylopectin content of 80-85 % from total starch as raw material; cleaning the early indica rice until water turns clear, immersing the early indica rice with clear water until the water content of the rice grains reaches 25-30 % or the rice grains can be crumbled with fingers; putting the raw material into a pollution-free one-step forming flour machine for processing to form fresh and wet rice-flour noodles through pulp refining, self maturing and extrusion moulding; hanging the fresh and wet rice-flour noodles in an enclosed environment with a relative humidity of more than 85% and a temperature of 10-30 DEG C for aging, and standing for more than 1h; and kneading the aged rice-flour noodles and dividing into shreds, further drying to obtain the finished product, rice-flour noodles. The method disclosed in the invention has the advantages of simple technology, short time, little loss of nutrition, no need of additives. The produced rice-flour noodles have translucent crystal, uniform color, and smooth and pliable taste. By adding characteristic ingredients, various natural nutritious rice-flour noodles can be produced with unique taste and abundant nourishments.

The invention relates to a method for determining content of amylopectin and amylose in broomcorn. The method comprises the following steps of 1, preparing an amylopectin regression equation and an amylose regression equation; 2, calculating the absorption ratio alpha of the amylopectin and the absorption ratio beta of the amylose; 3, measuring the sample, calculating the absorbance of the amylopectin and the amylose at the measurement wavelength through a given formula, and then correspondingly inserting the absorption ratio and the absorbance into corresponding regression equations to obtain the concentration of the amylopectin and the amylose. The determination method provided by the invention just requires two wavelengths; an error caused by dual-wavelength null hypothesis is removed; and compared with the dual-wavelength, the method disclosed by the invention is simpler in principle and computing method, and the finally obtained content of the amylopectin and the amylose is high in accuracy.

Disclosed herein is a method for harvesting amylose host material comprising enzymatically treating starch after the starch has been chemically modified to uniformly insert a steric hindrance substituent.