255results about "Fructose production" patented technology

The present invention relates to a hybrid enzyme comprising carbohydrate-binding module amino acid sequence and a fungal alpha-amylase amino acid sequence and to a variant of a fungal wild type enzyme comprising a carbohydrate-binding module and an alpha-amylase catalytic module. The invention also relates to the use of the hybrid enzyme or the variant in starch liquefaction.

Dandelion processes, compositions and products are provided. One process is a method of preparing dandelion that utilizes a species of a Taraxacum genus, the process including the steps of extracting and recovering a rubber and a carbohydrate from a dandelion root substantially simultaneously. The process employs a dandelion species that is selected from the group consisting of: Taraxacum officianale, Taraxacum kok-saghyz, a rubber-bearing species of the genus Taraxacum, and a combination of two or more thereof. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

A sugar mixture comprising: monosaccharides; oligosaccharides in a ratio ≧0.06 to total saccharides; disaccharides in a ratio to total saccharides ≧0.05; pentose in a ratio to total saccharides ≧0.05; at least one alpha-bonded di-glucose; and at least one beta-bonded di-glucose. Also disclosed are methods to make and/or use such mixtures.

The invention relates to the use of a weakly acid cation exchange resin for chromatographic separation of carbohydrates. In the invention the hydrophilic/hydrophobic interaction of carbohydrates, sugars and sugar alcohols with the weakly acid cation exchange resin is utilized. The weakly acid cation exchange resin is used for separation of hydrophobic saccharides, such as deoxy, methyl and anhydrosugars and anhydrosugaralcohols from more hydrophilic saccharides.

A system and method for extracting C₅ sugars including pentose and/or C₆ sugars including hexose from a slurry of cellulosic material comprising cellulose, water, and optionally acid.

The invention relates to a method for pre-treating lignocellulose raw material and for preparing reducing sugar by conversion. With liquid-solid ratio of 5-50, lignocellulose is treated for 1-10h in a mixed solution of 0-5% of sodium hydroxide by mass and 0-5% of hydrogen peroxide by mass; solid residue obtained by treating is washed by using water, and is dried by baking; the obtained material is treated under a liquid-solid ratio of 5-50, an acid hydrolysis time of 10-120min, an acid hydrolysis temperature of 30-150min, and a sulfuric acid mass concentration of 0-10%, such that a solid residue is obtained; a pH value is regulated to 7; and the obtained material is dried by baking. With the treatment process, lignin can be effectively removed, and hemicellulose is hydrolyzed under a dilute acid condition, such that pentose is obtained. With further reactions, products with high added value can be obtained. With a sample treated with the process, ineffective adsorption upon cellulase is reduced, and a conversion rate of cellulose in preparing ethanol can reach 67%. Therefore, a production cost is relatively reduced.

A process for preparing pectose from witloof by hydrolysis features that the acidolsis is used to prepare the high-pectose syrup, the inulase is used to prepare chicorose mixture (PPE), the inulin endonuclease is used to prepare oligopectose by fermenting, and the inulin exonuclease is used to prepare the ultrahigh-pectose syrup by fermentation.

A sugar composition comprising at least 40% dissolved solids in an aqueous solution having a viscosity at least 10% lower than a 42 DE (Dextrose Equivalents) reference solution with a same dissolved solids concentration at a given temperature. Another sugar composition comprising at least 30% glucose relative to total sugars, at least 10% mannose relative to total sugars, at least 5% xylose relative to total sugars, and less than 0.25% ash. Another sugar composition comprising at least 30% glucose relative to total sugars at least 10% mannose relative to total sugars, at least 5% xylose relative to total sugars, and at least 2% total furfurals.

The invention relates to a method for preparing high-concentration fructose syrup by hydrolyzing sucrose, which comprises the following steps: (1) decolorizing a high-concentration sucrose solution by using acid with dosage accounting for 0.1-1.0% of the high-concentration sucrose solution as the hydrolyst while adding 0.05-0.8% of powder active carbon, and carrying out the reaction at 50-80 DEG C for 15-75 minutes to obtain the high-concentration fructose syrup of which the concentration is more than or equal to 45%, wherein the degree of hydrolysis is more than or equal to 97%; (2) and removing acid radicals and a small amount of pigments in the fructose syrup by using weak-base anion-exchange resin, and removing cations by using a strong-acid cation exchange resin, thereby adjusting the pH value of the fructose syrup. Compared with the exisiting method, the method of the invention is simple and convenient. Through deep research into the hydrolysis conditions, the invention provides the hydrolysis conditions capable of ensuring the hydrolysis effect and reducing the production cost. In addition, the invention carries out the hydrolysis and the decoloring synchronously, thereby ensuring the appearance of the syrup and simplifying the production technology. Then, the acid radicals and the cations in the syrup are removed by using anion and cation exchange resins, thereby obtaining the qualified high-concentration fructose syrup.

The invention relates to a phenylboronic acid modified magnetic nanoparticle, and a preparation method and application of the phenylboronic acid modified magnetic nanoparticle, and belongs to the technical field of nano materials. Firstly, a magnetic silicon dioxide nanoparticle is prepared, a sulfydryl modified magnetic nanoparticle is prepared through a silanization reaction, the sulfydryl modified magnetic nanoparticle is then dissolved in ethyl alcohol, 4-vinyl phenylboronic acid and AIBN (azodiisobutyronitrile) are then added, the mixture is stirred and reacts in a water bath kettle, a product is magnetically separated, an obtained solid is washed through distilled water and ethyl alcohol and dried to obtain a final product of the phenylboronic acid modified magnetic nanoparticle; and the obtained material is used in enrichment and separation of fructose. The synthesized magnetic material has the advantages of excellent nuclear shell morphology, and can be rapidly separated in an externally applied magnetic field; the adsorption efficiency of fructose of a magnetic microsphere is 6 times that of glucose, the application effects of enrichment and separation of fructose are quite good, and meanwhile, the phenylboronic acid modified magnetic nanoparticle is excellent in repeatability.

The invention discloses a method for degrading lignocellulose to generate reducing sugar, and in particular relates to the method for degrading lignocellulose to generate reducing sugar by using H2O2 as a catalyst and using metal ion as a catalyst promoter. The method comprises the following steps: adopting an ionic liquid as a solvent, commercially available hydrogen peroxide with the mass fraction of 30% as a catalyst and metal ion as a catalyst promoter; and dissolving and degrading lignocellulose materials to generate water-soluble reducing sugar, wherein the ionic liquid can be recycled. The method for degrading lignocellulose to generate reducing sugar has the characteristics of being simple and convenient to operate, gentle in condition, environment-friendly, low in cost, less in byproducts, high in reducing sugar yield and the like. The method for degrading lignocellulose to generate reducing sugar can be used for treating various lignocellulose materials; and when the lignocellulose materials are treated by adopting the method, the conversion rate of the lignocellulose materials is bigger than 80%, the reducing sugar yield is bigger than 65%, and the recovery rate of the ionic liquid is bigger than 95%.

The present invention provides processes for deconstructing biomass to produce aqueous and organic products using a solvent produced in a bioreforming reaction.

The invention discloses a method for preparing a reducing sugar by hydrolyzing a biomass with super-critical/sub-critical water in two steps, which belongs to the technical field of new energy. The method is characterized in that the high-yield reducing sugar is prepared by hydrolyzing the biomass with the super-critical/sub-critical water through a two-step method, namely a low-temperature section and a high-temperature section. The hydrolysis reaction is performed under the following conditions that: the temperature is 180 to 230 DEG C; the reaction time is 0 to 60 minutes; and the solid-to-liquid ratio is 1:100-1:20. The method of the invention has the advantages that: under two-step method hydrolysis condition of the super-critical/sub-critical water, hemicelluloses in the biomass arereclaimed; the yield of the biologically hydrolyzed reducing sugar is obviously improved; according to different raw materials, the highest total yield of the reducing sugar can reach 40 to 60 percent; and the recovery rate of the raw material and the reducing sugar is over 70 percent.

The present invention relates to methods of processing lignocellulosic material to obtain hemicellulose sugars, cellulose sugars, lignin, cellulose and other high-value products. Also provided are hemicellulose sugars, cellulose sugars, lignin, cellulose, and other high-value products.

The invention relates to a method for hydrolyzing chitin and chitosan, in particular to a method for jointly hydrolyzing chitin and chitosan through a physical method and a chemical method. The method for hydrolyzing chitin and chitosan comprises the following steps that: the chitin or chitosan is taken as a raw material, binary mixed ionic liquid is taken as a solvent for the chitin or chitosan,acid functionalized ionic liquid is taken as a catalyst for hydrolysis, a water and strong polar co-solvent is added, and hydrolysis reaction is performed under the microwave reaction condition; and the obtained product is analyzed through ion chromatography, gel permeation chromatography and infrared, and the content of total reducing sugar is measured by an Imoto method. The method for hydrolyzing chitin and chitosan has the advantages of high efficiency, environmental friendliness, and high yield.

The invention uses sucrose or white sugar as material to treat and separate and prepare crystal fruit sugar with high yield more than 80% for given sucrose quantity. Wherein, it relates to hydrolysis, simulated moving bed adsorption and separation, isomerization, condensation, crystallization, centrifugal separation and drying.

A preparation method of biological carbon-based solid acid and its application in cellulose hydrolysis reaction belong to the technical field of biomass resource utilization. The preparation method of the biological carbon-based solid acid comprises the following steps: under the conditions of normal temperature and pressure and air atmosphere, the organic strong acid is added dropwise to the biomass ionic liquid solution, and the synchronous "carbonization-nucleophilic substitution" reaction is carried out, and the reaction is carried out by water and acetone. Alternately washed and then dried to obtain a biocarbon-based solid acid. The raw material biomass used is cheap and has a wide range of sources. Using ionic liquid as a solvent, submicron carbon sphere supports with high specific surface area and abundant surface functional groups can be obtained by ion thermal carbonization, and the acid site loading capacity is high. The synthesis of the catalyst can be carried out in the normal pressure air atmosphere, the requirements for the reaction equipment are low, the operation is simple and easy, and the output of the catalyst is high. The obtained bio-carbon-based solid acid is used for the hydrolysis of cellulose, and has the advantages of mild reaction conditions, high yield of reducing sugar and glucose, and reusable catalyst.

The invention relates to a preparation method of crystalline fructose, which sequentially comprises the following steps: carrying out chromatography separation on fructose-glucose syrup, carrying oution exchange and nanofiltration operation on the obtained fructose liquid, then respectively carrying out concentration through a double-effect plate type evaporator and a scraper evaporator, mixing the concentrated fructose liquid with ethanol and finally carrying out crystallization, centrifugal separation and drying, thereby obtaining the crystalline fructose. The prepration method of the crystalline fructose adopts the nanofiltration separation technology, removes impurities which affect the crystallization and the quality of a finished product before the crystallization, improves the product quality and the crystallization yield, combines the high-efficient plate type evaporator with the scraper evaporator, reduces the evaporation temperature of the fructose and the residence time inthe evaporators and effectively prevents the thermal decomposition and the complex reaction of the fructose. Compared with the prior art, the crystalline fructose produced by the method has the advantages of high purity of the fructose, uniform crystalline particles, good color and luster, high crystallization rate and low unit cost.