1252 results about "Xylooligosaccharide" patented technology

The invention discloses a comprehensive utilization process of wood cellulose, which comprises the processes of comprehensive treatment, oligosaccharide preparation, lignin preparation, fiber ethanol preparation and the like. The invention has the advantages of decomposing a biomass macromolecular natural compact structure by using a high-pressure instant steam exploding technology, being beneficial to the separation and the extraction of the lignin, the cellulose and the cellulose, reducing the consumption of the energy sources and the materials, such as acid, alkali, heat, catalyst and the like for preprocessing, reducing the emission of pollutants and lightening the pollution of the environment. Secondly, the cogeneration of oligosaccharide and lignin realizes the comprehensive utilization of the energy sources, especially the application of the steam exploding technology ensures that the quality of the two products of the oligosaccharide and the lignin is greatly improved and the yield is greatly increased; and alcohol and the lignin of production fuels of sugar residues can be extracted irrespective of the order.

The invention relates to a preparation method of a biological preservative. As known to all, along with the rapid development of the society, chemical preservatives have been used in food, have strong impact on food safety and endanger the health of consumers, therefore, the use of preservatives causes great concern of government departments and consumers. According to the biological preservative, natural plants and microbial antibiotic substances are used as base materials, for example, the biological preservative is prepared by mixture of carboxymethyl chitosan, xylooligosaccharide, nisin from lactic streptococci, acetic acid, lactobacillus reuteri, pediococcus acidilactici, calcium citrate, ionized calcium, lactic acid, plant essential oil and water. The biological preservative can inhibit growth of harmful microorganisms by antagonistic and competitive inhibition effects among different microorganisms and produce extracted and separated components of antibacterial active ingredients having antifungal and antibacterial functions in normal growth and metabolism processes, thereby achieving antiseptic and fresh-keeping effects.

The invention discloses a meal replacement protein powder solid beverage for managing the body weight and belongs to the field of nutrient foods. The solid beverage comprises the following components of soybean isolated protein, dried skim milk, whey protein concentrate, resistant dextrin, inulin, L-carnitine, a white kidney bean extract, a guarana extract, soy dietary fiber powder, pea fiber, oat fiber, erythritol, stevioside, phospholipid, Arabic gum, xanthan gum, pectin, alkalized cocoa powder, xylooligosaccharide and edible essence. By comprehensively considering the difference of nutrient components required by a human body at daytime and nighttime, the solid beverage disclosed by the invention is reasonable in formula matching and balanced in nutrition, and is the meal replacement solid beverage for supplementing the nutrients of the human body and controlling the body weight; the production process is simple and the drying is avoided; the damage to plant extracts and other components is prevented, so that the effects of nutrient components are guaranteed; besides, no sugar is added in the formula of the meal replacement protein powder solid beverage, so that the meal replacement protein powder solid beverage is suitable for being eaten by people with diabetes.

The invention relates to a lignocellulose acid/alkali coupling pretreatment method. Lignocellulose is separated into cellulose, hemicellulose and lignin by acid/alkali coupling pretreatment; and simultaneously, lignocellulose components are separated and subjected to high-efficiency enzymolysis and saccharification. The method comprises the steps of lignocellulose pretreatment, component separation, cellulose enzymolysis, solvent recovery and the like. The lignocellulose material is pretreated by formic acid or dilute sulphuric acid and is then subjected to solid-liquid separation, wherein the liquid component is used for recovering hemicellulose hydrolyzed sugar and part of lignin; and the solid component is further treated by ammonia water or a sodium hydroxide solution and is then subjected to solid-liquid separation, the liquid component is used for recovering lignin, and the solid component (cellulose) is subjected to enzymolysis and saccharification. By converting the lignocellulose into cellulose hydrolyzed sugar (glucose), hemicellulose hydrolyzed sugar (xylose and xylooligosaccharide) and lignin, the invention provides a basis for full-biomass utilization and develops a green process route for recovering the pretreatment solvent.

The invention relates to a nutritive defatting food. The nutritive defatting food comprises the following components of whey protein concentrate, hydrolyzed fish collagen protein, soy protein isolate,rice protein, inulin, psyllium husk, resistant dextrin, resistant starch, chenopodium quinoa willd, konjaku flour, chia seeds, fructo-oligosaccharide, xylooligosaccharide, isomaltulose, erythrite, steviosides, linseeds, linseed oil, CMC, medium chain triglyceride, conjugated linoleic acid glycerides, L-carnitine, ferment, complex vitamins, and composite mineral substances. The nutritive defattingfood is good in satiety, balanced in nutrients, and good in defatting effect.

A method for using biomass to produce cellulose, lignin and wood sugar comprises that breaking and screening the biomass, using low-boiling-point organic acid to immerge to decompose the biomass into wood sugar and oligosaccharide, and fluidize the cellulose and lignin, cools the liquid biomass after reaction, adds organic solvent, mixes uniformly and lays, after deposits completely, separating deposits and washes, dries to obtain non-shaped cellulose, distills the mother liquid of cellulose, recycles organic acid and generated volatile organics, distills mother liquid, cools and lays until complete deposition, separates deposits, washes, and dries to obtain wood sugar and oligosaccharide, evaporates to recycle the wood sugar and the organic solvent of deposited mother liquid, then separates the deposits, and dries to obtain lignin. The invention can completely circulate organic acid and organic solvent without waste discharged.

The present invention relates to a reaction apparatus for preparing a low carbon polyol by catalysis and conversion of a carbohydrate, and a reaction process thereof. The reaction process adopts a high pressure reactor, wherein a catalyst filtering gondola is positioned inside the high pressure reactor, the position of the gondola is higher than the liquid level of the reactant inside the reactor, and the reaction is carried out under a high temperature hydrothermal condition. During the reaction, reactant slurry of the carbohydrate (comprising one or more than two materials selected from cellulose, hemicellulose, sucrose, glucose, fructose, xylose, soluble xylooligosaccharide and starch) flows from the bottom of the reactor, is driven to flow back to the reactor by a high pressure liquid pump, then is injected into the gondola to perform a catalytic reaction with the catalyst inside the gondola, and flows and accumulates on the bottom of the reactor, and the reaction is circulated. With the process, catalyst poisoning and deactivation can be effectively reduced, such that the reaction selectivity and the catalyst life can be improved.

The invention discloses a blueberry composite tablet candy capable of relieving visual fatigue and a preparation method thereof. The blueberry composite tablet candy capable of relieving the visual fatigue comprises the following raw materials in percentage by weight: 13.25 percent of a blueberry extract, 0.5 percent of lutein esters, 0.3 percent of beta-carotene, 1.0 percent of citric acid, 64.45 percent of sorbitol, 2 percent of xylooligosaccharide, 3 percent of dextrin and 15 percent of microcrystalline cellulose, wherein the blueberry extract is extracted from a mixture of blackberry pomace dry matter and acid ethanol; the acid ethanol comprises ethanol and water with the volume percentage of 60 percent; the pH value of the acid ethanol is 1.5 to 3.0; the blackberry pomace dry matter and the acid ethanol are in the mass volume ratio of 1:50-1:70; the preparation method of the blueberry composite tablet candy capable of relieving the visual fatigue comprises the following main steps: 1, preparing the blueberry extract; 2, crushing; 3, mixing; 4, granulating; 5, tabletting; 6 packaging. The blueberry composite tablet candy capable of relieving the visual fatigue can effectively relieve the visual fatigue, can improve eyesight after long-term eating, and is convenient to take; a new using way is provided for utilizing fresh blueberry and fully playing intentional physiological and pharmacological efficacies.

A process for extracting xylan from wooden fibre material features that under the catalysis of microwave, the alkali solution containing hydrogen peroxide in directly sued to treat raw material for performing extraction of xylane and bleaching it at same time. Its advantages are high speed, less consumption of alkali, and high extracting rate. The resultant xylan solution can be deposited in organic solvent or superfilted and dried to obtain light-color xylan product.

The invention relates to a clean and high-efficiency production process for preparing xylose and L-arabinose and belongs to the field of application of wastes of agriculture and forestry. The production process comprises the following steps of: performing pretreatment on raw materials; hydrolyzing the raw materials in a high-temperature cooking mode; performing neutralizing treatment and performing centrifugal separation on solid slag to obtain xylose or xylooligosaccharide hydrolyzate; adding coarse enzyme solution into xylooligosaccharide solution to hydrolyze to obtain xylose solution; treating the hydrolyzate by Angle yeast; purifying by using active carbon and resin; performing recompression and concentration treatment on the purified hydrolyzate by using a mechanical vapor recompression (MVR) machine; crystallizing the concentrated solution in a gradient program cooling mode to obtain xylose products and xylose mother solution; separating the xylose mother solution by a simulated moving bed or a chromatographic separation technology to obtain a xylose phase and an L-arabinose phase; returning the xylose phase to the xylose solution to concentrate and recrystallize; reusing the xylose mother solution; performing MOVR concentration treatment on the L-arabinose phase and crystallizing in a gradient program cooling mode to obtain L-arabinose products; and reusing the L-arabinose mother solution.

A high-purity oligoxylose is prepared from corn cob through pretreating by diluted acid, digestion, enzymolyzing by xylanase, refining, ultrafiltering, and nano filtering. Its advantages are high purity (90%) and low cost.

The invention discloses a method for preparing xylooligosaccharide, lignin and microcrystalline cellulose by completely utilizing straws, belonging to the technical fields of food and chemical engineering. The method comprises the following steps: by using straws of wheat, rice, corn and other agricultural crops as raw materials, pulverizing, soaking in water, carrying out certain-intensity steam explosion depolymerization treatment, adding xylanase for enzymolysis, filtering, and carrying out membrane separation on the filtrate to obtain the xylooligosaccharide; carrying out certain-intensity steam explosion treatment on the filtration residue, adding cellulase and laccase for enzymolysis, filtering, carrying out high-pressure value equalizing on the filtrate, decolorizing, concentrating and drying to obtain the microcrystalline cellulose; and immersing the filtration residue in a solution with a certain pH value, reacting at specific temperature, carrying out vacuum filtration under reduced pressure, carrying out solid-liquid separation, and drying to obtain the refined lignin. By adopting the steam explosion and composite enzymolysis, the method has the advantage of mild conditions, avoids using toxic reagents, and implements complete utilization of the hemicellulose, cellulose and lignin components in the straws.

Xylooligosaccharide is produced from a lignocellulose pulp by enzyme-treating a lignocellulose pulp with hemicellulase, filtering the resultant reaction mixture to separate a liquid fraction from the enzyme-treated pulp, subjecting the separated liquid fraction to a permeation treatment through a separation membrane to separate a non-permeated fraction containing xylooligosaccharide-lignin complex with an increased concentration from a permeated fraction, collecting the non-permeated fraction, and separating and recovering xylooligosaccharide from the collected non-permeated fraction.

The invention discloses a bio-preparation method for production of high-purity xylo-oligosaccharide and coproduction of arabinose and xylose. The method comprises the following steps of: washing hemicellulose-enriched biomass, performing size mixing pretreatment, adding xylanase, performing enzymolysis, and separating and purifying to obtain mixed liquid glucose; concentrating the mixed liquid glucose until the mass concentration is 50 to 70 percent, and performing chromatographic separation to sequentially obtain AD phase, BD phase, CD phase and BD phase, and concentrating the BD phase to obtain a high-purity xylo-oligosaccharide syrup liquid product; concentrating the CD phase, mixing with cellulosic materials, drying, and crushing to prepare fiber feed; performing yeast fermentation on the AD phase to remove glucose, removing impurities, purifying, concentrating and performing chromatographic separation to obtain the high-purity xylose liquid and arabinose liquid; concentrating the xylose liquid, crystallizing, separating and drying to obtain crystallized xylose; and concentrating arabinose liquid, crystallizing, separating and drying to obtain crystallized arabinose. The invention also provides a bio-preparation method for arabinose and xylose.

The invention relates to a tablet candy containing prebiotics and a preparation method thereof. The tablet is prepared from the following components in parts by weight: 1-40 parts of isomaltooligosacharide, 1-20 parts of fructo-oligosaccharide, 1-30 parts of xylooligosaccharide, 5-30 parts of microcrystalline cellulose, 1-15 parts of citric acid, 5-30 parts of xylitol, 5-30 parts of skim milk powder and 0.1-3 parts of magnesium stearate. The tablet candy containing prebiotics is obtained through the steps of crushing all of the raw materials, respectively, filtering through an 80-mesh sieve, mixing evenly, forming a soft material, pelleting, drying, shaping and tableting. The tablet candy containing prebiotics provided by the invention is capable of promoting the multiplication of probiotics in the intestinal tract of the human body and then improving the intestinal environment of the human body, promoting intestinal tract movement, preventing constipation, reducing the multiplication of harmful bacteria, improving the immunity of the human body, promoting the synthesis of group B vitamins and also promoting the absorption of trace elements such as Ca, Fe and Zn.

The invention belongs to the technical field of comprehensive utilization of subsidiary agricultural products, and relates to a method for preparing xylooligosaccharide and cellulose by using a crop straw acid hydrolysis method. The method for preparing the xylooligosaccharide by using the crop straws is used for preparing the xylooligosaccharide by four steps of pretreatment, acid hydrolysis, decoloration and desalination for hydrolysate and concentration drying; and a cellulose product can be obtained by performing alkaline treatment, stewing, pulping and drying on solid residues produced in a xylooligosaccharide preparation process. According to the method for preparing the xylooligosaccharide and the cellulose by using the crop straw, the crop straw is used as a raw material; the xylooligosaccharide and the cellulose are prepared by hot water pretreatment and acid hydrolysis by using the agricultural forest byproducts; the production technology is simple; the practicability is high; the economical value of the product is improved; the difficulty in utilization of the straw is well solved.

A composition composed of a Lactobacillus bacterium, Bifidobacterium longum, and xylooligosaccharide is provided for use in reducing uric acid levels in the blood and preventing or treating hyperuricemia or gout.

The invention discloses a method for preparing oligosaccharide and paper pulp, belonging to the technical fields of pulping and the comprehensive utilization of pulping. The method comprises the steps of: using crop straws as raw materials, pre-treating the raw materials to obtain a pre-extracting solution, concentrating the pre-extracting solution by a membrane separation method, then obtaining a crude xylan solution via precipitation and centrifugal separation, and then preparing oligosaccharide via enzymolysis, vacuum concentration and frozen-drying. The pre-treated solid residues are stewed via an alkaline process so as to prepare unbleached paper pulps of which the indexes such as fiber length, whiteness, fracture length, tear resistance, folding strength and the like are all improved. The generated black liquid has the characters of low viscosity and high heat productivity. The method for preparing oligosaccharide and paper pulp integrates the comprehensive utilization method with the biomass transformation method on the premise of optimizing the traditional alkaline chemical pulping technique to prepare products with high additional values, namely oligosaccharide, thereby increasing the quality of the paper pulp and the extraction, vaporization and combustion performances of the black liquid.