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68 results about "Water soluble carbohydrate" patented technology

Water soluble carbohydrates (WSC) are sugars such. as fructans, sucrose, glucose and fructose which are. accumulated in the stem as reserves.

Preparation method of anticlotting materials

InactiveCN102698323AReduce incidenceConducive to adhesion and proliferationPharmaceutical containersMedical packagingMorpholineDevice material
The invention discloses a preparation method of anticlotting materials, which is used for performing the anticlotting modification on the surface of an implanting device material so as to improve the anticoagulant activity of an intravascular stent. The preparation method comprises the following steps: dissolving 0.1mug/ml-10mg/ml of bivalirudin in a water soluble carbohydrate (WSC) solution, wherein the WSC solution is composed of 9.76mg/ml of 2-(N-morpholine) ethanesulfonic acid buffer solution, 1mg/ml of 1-ethyl-3-(3-dimethylamino propyl) carbodiimide and 0.24mg/ml of N-hydroxy-succinamide; obtaining bivalirudin-WSC solution; immersing the biomedical materials containing amido on surface in the bivalirudin-WSC solution to react for 1-48 hours, and then fully rinsing the biomedical materials by phosphate buffer solution (PBS) with pH value of 7.4 and distilled water respectively, and drying to obtain the objective matter. The anticlotting materials or an apparatus obtained by the invention can play the role of anticlotting by directly or specially imhibiting the activity of thrombin. The preparation method of the anticlotting materials is definite in the anticlotting effect, safe in use and simple in operation of the method, and free from the limit of the physical structure of materials or apparatus.
Owner:SOUTHWEST JIAOTONG UNIV

Simple and effective mulberry leaf polysaccharide detection method

The invention discloses a simple and effective mulberry leaf polysaccharide detection method. The method specifically comprises steps as follows: mulberry leaf water-soluble carbohydrates and mulberry leaf total carbohydrates are extracted, hydrolyzed and converted into reducing sugar, the light absorption values of a mulberry leaf water-soluble carbohydrate extracting solution and a mulberry leaf total carbohydrate extracting solution in the position of 540 nm are measured with a 3,5-DNS acid (dinitrosalicylic acid) colorimetric method, the mass of the mulberry leaf water-soluble carbohydrate extracting solution and the mulberry leaf total carbohydrate extracting solution in a measurement liquid are calculated on the basis of glucose according to the glucose standard curve, the content of mulberry leaf water-soluble carbohydrates and the content of mulberry leaf total carbohydrates (on the basis of reducing sugar) are calculated, and the content of mulberry leaf polysaccharides is calculated according to the formula that the quantity of the mulberry leaf polysaccharides (%) is equal to the product obtained by multiplying the difference between the quantity of mulberry leaf total carbohydrates (%) and mulberry leaf water-soluble carbohydrates (%) by 0.9. By means of the method, the problem that the color developing condition is difficult to control due to the fact that sulfuric acid releases much heat when meeting water is solved, besides, the measurement process is not affected by monosaccharide components, the operation is simple and safe, the result is stable and reliable, and the method is suitable for detecting the content of the polysaccharides in massive mulberry leaf samples.
Owner:SOUTHWEST UNIV

Extraction and purification process for total phenolic acid in chaenomeles speciosa

ActiveCN106177020AHigh extraction rateThe extraction and purification process steps are simplePlant ingredientsRefluxPurification methods
The invention provides an extraction and purification process for total phenolic acid in chaenomeles speciosa. The extraction and purification process includes the following steps that the chaenomeles speciosa raw medicinal material is smashed, powder obtained after smashing is subjected to heating reflux for 3-5 h with an ethanol solution, and after filtering, filter liquor is collected; the filter liquor is concentrated to a constant weight, extract is obtained, and the content of total phenolic acid in the extract is measured through the foline-phenol method; the extract is dissolved with deionized water and then prepared into a phenolic acid solution for use; the model of macroporous resin in use is selected, the selected macroporous resin is packed into a column, and after the resin is pretreated, the phenolic acid solution is subjected to dynamic sample loading adsorption; substances on the surface of the resin and part of water-soluble carbohydrates are washed off with deionized water; finally, the resin is eluted with ethyl alcohol, phenolic acid adsorbed in the resin is desorbed, and collected eluate is total phenolic acid in chaenomeles speciosa. According to the extraction and purification method, the process of performing ethanol extraction and then resin purification is adopted, the extraction rate is high, and the extraction and purification method is suitable for industrial production.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES

Method for producing carbon aerogel from hydrogel precursor material by means of hydrothermal process

The invention relates to a method for preparing carbon aerogel from a hydrogel precursor material through a hydrothermal process, belongs to the field of new materials, and solves the problems of complex carbon preparation process and high cost due to adoption of supercritical drying in the prior art. The method comprises the following steps: step 1, acidifying chitosan with diluted hydrochloric acid, and forming a mixed solution with water-soluble carbohydrates; step 2, adding a polysorbate nonionic surfactant and liquid paraffin, and then adding glutaraldehyde to form hydrogel; step 3, placing the hydrogel in a reaction kettle, and carrying out a hydrothermal reaction, to obtain a primary carbonization product; step 4, cleaning the primary carbonization product and replacing the primarycarbonization product with a two-stage solvent; and step 5, carrying out further heat treatment on the primary carbonization product, characterizing the microstructure of the primary carbonization product by using a scanning electron microscope, and determining the pore property of the sample by nitrogen adsorption. The carbon aerogel structure is generated in one step by utilizing low-cost raw materials; normal-pressure drying of the carbon aerogel structure is achieved through two-stage solvent replacement.
Owner:INST OF CHEM CHINESE ACAD OF SCI
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