10 results about "Carboxymethyl starch" patented technology

This invention relates to a rapid-setting high-strength concrete and its preparation method. The rapid-setting high-strength concrete comprises the following raw materials in parts by weight: 100-200 parts cement, 80-100 parts coarse aggregate, 40-60 parts fine aggregate, 10-20 parts rubber powder, 20-30 parts modified straw-based carbon powder, 0.3-0.5 parts coupling agent, and 0.6-0.8 parts water-reducing agent. The modified straw-based carbon powder is obtained by first adding straw powder to an activation solution containing aluminum sulfate, carboxymethyl starch, and triethanolamine, followed by activation, ball milling, and freeze-drying to obtain a precursor. The precursor is then mixed with flake aluminum powder and heated under an inert atmosphere to obtain the final product. The mass fraction of aluminum sulfate is 5-10%, the mass fraction of carboxymethyl starch is 5-10%, and the mass fraction of triethanolamine is 3-5%. This invention improves the rapid setting effect, compressive strength, flexural strength, and crack resistance of concrete by incorporating modified straw-based carbon powder into the concrete components. This is of great significance for improving the overall performance of concrete and developing infrastructure construction.

The application provides an oral instant tablet containing Morinda citrifolia oil, which comprises the following components in parts by mass: Morinda citrifolia oil microemulsion 10 parts, carrier 30-40 parts, coating material 2-4 parts, and disintegrating agent 2-5 parts. The coating material is selected from Aeroperl and / or Sylysia; the carrier is selected from one or more of microcrystalline cellulose MCC PH101, microcrystalline cellulose MCC PH102, starch and lactose; and the disintegrating agent is selected from carboxymethyl starch sodium and / or low-substituted hydroxypropyl cellulose. The microemulsification technology is used to wrap the essential oil to reduce the volatilization of the essential oil; the microemulsion is made into a tablet to cover the acidity, increase the compliance of the public, and realize the form change of the Morinda citrifolia oil microemulsion from liquid to solid. The application studies and prepares the oral instant tablet containing Morinda citrifolia oil, which not only solves the inherent defects of traditional dosage forms, but also provides a more convenient taking mode compared with common tablets.

A hydrate decomposition inhibiting composition, a coupling enhanced solid hydrate, and a method for improving the solid hydrate storage and transportation stability relating to the technical field of natural gas safety storage and transportation are provided. The hydrate decomposition inhibiting composition contains a carboxymethyl starch salt and an alkyl glycoside surfactant. The composition improves the interface stability of the hydrate phase boundary and the mechanical stability of the hydrate and enhance the strength of the hydrate crystal interface since the colloidal solution formed by dispersing the sodium carboxymethyl starch and the alkyl glycoside surfactant in water can coat the surface of the hydrate to form a protective layer, thereby improving the structural stability of the hydrate. Therefore, the composition inhibits the decomposition of the hydrate, reduces the decomposition rate of the hydrate, and can further reduce the decomposition amount of the hydrate.

The present invention aims to provide an intraoral adhesive film that combines adhesive properties and slow dissolution properties in a well-balanced manner. [Solution] The present invention provides an intraoral adhesive film containing (A) ιcarrageenan and (B) κcarrageenan. Preferably the film further contains (C) a water-soluble polymer such as tamarind gum, gum arabic, karaya gum, xanthan gum, gellan gum, tragacanth gum, guar gum, tara gum, locust bean gum, pullulan, gelatin, casein, pectin, agar, glucomannan, galactomannan, starch, carboxymethyl starch, dextrin, alginic acid, alginic acid ester, chitin, chitosan, carboxymethylcellulose, λcarrageenan, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylcellulose, and ethylcellulose.

The invention discloses ionic cross-linked starch hemostatic powder and a preparation method and application thereof.The preparation method includes the steps that carboxymethyl starch with the substitution degree not smaller than 0.3 is dissolved in deionized water to be continuously stirred, a metal ion solution is quantitatively and dropwise added into the solution to obtain floccules, the floccules are centrifuged, washed and freeze-dried, and the ionic cross-linked starch hemostatic powder is obtained; the ionic cross-linked starch hemostatic powder is prepared. The preparation process is mild in reaction condition, a chemical cross-linking agent with poor biological safety is not needed, the process is simple and environment-friendly, and large-scale production is easy to realize.

The purpose of the present invention is to provide an intraoral adhesive film which has a good balance of adhesive properties and sustained-release properties. Specifically, the present invention provides an intraoral adhesive film containing (A) ι carrageenan and (B) κ carrageenan. It is preferable that the film further contain (C) a water soluble polymer such as tamarind gum, gum arabic, karaya gum, xanthan gum, gellan gum, tragacanth gum, guar gum, tara gum, locust bean gum, pullulan, gelatin, casein, pectin, agar, glucomannan, galactomannan, starch, carboxymethyl starch, dextrin, alginic acid, alginic acid ester, chitin, chitosan, carboxymethyl cellulose, λ carrageenan, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, methyl cellulose, or ethyl cellulose.

The application relates to the technical field of 3D printing polymer materials, and specifically discloses a biomass-based photocurable 3D printing hydrogel as well as a preparation method and application thereof. The hydrogel is prepared by compounding carboxymethyl starch quaternary ammonium salt, lignin-based polyurethane acrylate photosensitive prepolymer as a core biomass-based functional component, acryloyloxyethyl trimethyl ammonium chloride, acryloyl morpholine, lithium bistrifluoromethanesulfonimide, hydroxypropyl cellulose, deionized water and an ultraviolet light-curable photoinitiator. The preparation method comprises the following steps: firstly, starch cationization modification and lignin photosensitization modification are respectively completed; and then, the resin composition is uniformly mixed, and the target hydrogel is prepared through light-curing 3D printing. The hydrogel can be applied to a strain sensor as a flexible sensing medium, has mechanical properties of high strength and high toughness, the whole biomass-based core component endows the material with excellent biodegradability and environmental friendliness, and meanwhile, the hydrogel is suitable for the molding requirements of high-precision light-curing 3D printing.

The invention belongs to the technical field of food processing, and particularly relates to compound cereal high-fiber rice crust enriched with GABA through fermentation and a preparation method of the compound cereal high-fiber rice crust. The method comprises the following steps: fermenting lactobacillus plantarum and lactobacillus brevis to prepare a compound lactic acid bacteria starter; mixing brown rice flour, whole wheat flour, oat flour, buckwheat flour and germinated brown rice flour with sodium glutamate and glucose, spraying the fermentation suspension for anaerobic fermentation, drying and crushing to obtain a fermented grain base material; respectively dissolving a chlorogenic acid chitosan-carboxymethyl starch copolymer and a cinnamon acylation modified rice bran protein-stevioside compound in warm water to obtain dispersion liquid, and mixing the dispersion liquid with a fermented grain base material, coconut oil, edible salt, konjac powder, inulin and calcium carbonate to prepare dough; and performing tabletting, cutting, steaming, segmented baking, cooling and nitrogen-filled packaging. The gamma-aminobutyric acid content and the dietary fiber level of the rice crust are remarkably improved, the taste and the antioxidant stability are improved, and the product is crisp and delicious and is suitable for functional food development.

The application discloses a kind of double enzyme response type double network interpenetrating hydrogel film and its preparation method and application, preparation method is first respectively synthesized terminal aldehyde group polyethylene glycol derivative and photosensitive carboxymethyl starch derivative, then two are mixed with chitosan acid solution according to specific proportion, after preliminary setting by Schiff base reaction, by ultraviolet light in situ construction second heavy crosslinking network, finally by casting, dry dehydration forms double enzyme response type double network interpenetrating hydrogel film.The application constructs double network interpenetrating structure, significantly improves the mechanical strength and toughness of hydrogel and its dry film, effectively overcome the defect that traditional polysaccharide material is big brittle, and the prepared hydrogel film has double response degradation characteristics of lysozyme and alpha-amylase, and the film can realize the bioresponsive controlled release of drug, and also can use the characteristics that chitosan can reversibly open oral mucosa epithelial cell tight junction, effectively promote the mucosal permeation absorption of encapsulated drug.

The invention discloses a method for optimizing a dissolution curve and in-vivo bioequivalence of a tablet. The tablet comprises the following components in percentage by mass: 1-5% of amlodipine besylate (based on amlodipine), 55-65% of microcrystalline cellulose, 25-35% of anhydrous calcium hydrogen phosphate, 1-3% of carboxymethyl starch sodium and 0-2% of magnesium stearate. According to the invention, microcrystalline cellulose with an average particle size of 90-140 [mu] m, bulk density of 0.26-0.37 g / cm < 3 > and drying weight loss of not more than 1.5% is selected, and an optimized dissolution detection method is combined, so that dissolution curves of a self-made sample and a reference preparation in a plurality of media are similar, and in-vivo curative effects of the self-made sample and the reference preparation are ensured to be consistent.