572 results about "Monosaccharide" patented technology

The invention belongs to the technical field of microorganisms, and particularly relates to bifidobacterium longum subsp. Longum as well as a composition, a pharmaceutical composition, a culture, a food product or a dietary supplement containing the bifidobacterium longum subsp. Longum and application of the bifidobacterium longum subsp. Longum. The bifidobacterium longum is preserved in the Guangdong Microbial Culture Collection Center on January 21, 2025, and the preservation number is GDMCC (China General Microbiological Culture Collection Center) No.65836. The bifidobacterium longum subsp. Longum has relatively strong gastric acid and cholate tolerance and intestinal colonization capability; the bifidobacterium longum subsp. Longum can effectively utilize bifidobacterium bifidum to release monosaccharide or disaccharide outside cells for efficient proliferation, and the composition containing the bifidobacterium longum subsp. Longum, the bifidobacterium bifidum and breast milk oligosaccharide can release a large amount of short-chain fatty acid, so that the effects of maintaining the physiological function of an organism and improving the health of the organism are achieved.

The invention discloses hawthorn leaf pectic polysaccharide with lipid-lowering activity and a preparation method and application thereof, and belongs to a preparation method of plant polysaccharide, the preparation method comprises the following steps: refluxing hawthorn leaves with ethanol, discarding monosaccharide and small molecule compounds, refluxing with hot water to extract medicinal materials, removing protein through an enzymolysis method and a Sevage reagent method, decolorizing with polyamide resin, and drying to obtain the hawthorn leaf pectic polysaccharide with lipid-lowering activity. The crude polysaccharide is separated through DEAE-52 column chromatography, and finally, the crude polysaccharide is further purified through Sephadex G-100, so that the uniform purified polysaccharide is obtained. Tests on pancreatic lipase inhibition, taurocholate binding capacity and glycocholate binding rate show that the compound has remarkable lipid-lowering activity and is expected to become a potential natural lipid-lowering preparation.

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i), (ii), and optionally (iii): (i) one or more polyhydric alcohols; preferably one or more carbohydrates, preferably selected from monosaccharides, disaccharides, and oligosaccharides; (ii) a first polymer, preferably an amine-containing polymer; more preferably a polyvinylamine or a polyalkyleneimine; and (ii) optionally, a second polymer, preferably a polar polymer; more preferably a water-soluble polar polymer. The invention further relates to a process for producing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

The invention relates to the technical field of microbial fermentation feeds, in particular to a method for producing a protein feed through solid-state fermentation of distiller's grains based on Trichoderma harzianum pretreatment. According to the method, the vinasse is pretreated by the crude enzyme prepared from trichoderma harzianum, and the formula and fermentation conditions of an enzyme production culture medium are optimized, so that the filter paper enzyme activity of cellulase is remarkably improved. By adding the surfactant into a fermentation system and optimizing the variety of the surfactant, the yield of the fermented monosaccharide is improved, and the problem of musty taste in a traditional fermented product is solved while the degradation efficiency of lignocellulose is improved. Furthermore, a synchronous saccharification and fermentation process is adopted, vinasse is fermented through compounded saccharomycetes and crude enzyme liquid, the trichoderma harzianum fermented protein feed is prepared and obtained, digestion and absorption of animals are easier, lactic acid fermentation is conducted on the trichoderma harzianum fermented protein feed again through lactobacillus fermentum, the flavor of the feed is improved, the bitter taste of the feed is reduced, and the sour taste is improved. The method realizes efficient utilization of vinasse resources.

The invention provides kelp fucoidin with low molecular weight and high anti-anaphylaxis as well as a preparation method and application thereof, and belongs to the technical field of food processing. The preparation method comprises the following steps: mixing kelp fucoidin with water to obtain a kelp fucoidin solution; and mixing the kelp fucoidin solution with H2O2 and Vc, reacting, adjusting the pH value, dialyzing and freeze-drying to obtain the kelp fucoidin with low molecular weight and high anti-allergic property. The H2O2-Vc degradation system is innovatively applied to preparation of the low-molecular-weight kelp fucoidin and improvement of the anti-allergic activity of the low-molecular-weight kelp fucoidin. In the degradation process, the chemical composition of the fucoidin is partially changed, but monosaccharide types and functional groups are not influenced. Through multiple ways of cell model and animal model experiments, the degraded laminaria fucoidin is more prominent in anti-allergic activity. Technical support is provided for development of seaweed-derived anti-allergic functional active substances, and high-valued utilization of kelp resources in the fields of functional food and medicines is further promoted.

The invention discloses a method for determining the content of monosaccharide in seaweed, and belongs to the technical field of biological detection. According to the method, an ion chromatography sugar separation system is adopted, a pulse ampere detector is combined, CarboPac PA20 is used as a sugar analysis column, and the eight monosaccharide components in the seaweed can be detected under the limited extraction and purification method. The method is low in detection limit, good in stability and suitable for measuring the content of free monosaccharide and polysaccharide hydrolyzed monosaccharide in common algae (such as brown algae, green algae and red algae).

The invention discloses a method for improving the quality of phyllanthus emblica fruit juice through an enzymolysis-assisted pulsed electric field, which comprises the following steps: firstly, carrying out preliminary enzymolysis treatment on phyllanthus emblica fruits through a low-concentration compound enzyme solution to form micropores in the surfaces of cell walls; then, the pore diameter of the preliminarily formed micropore area is further expanded under the action of a pulsed electric field, the cell structure is destroyed to form a pore channel, through combined regulation and control of enzymolysis and electric field parameters, efficient release of micromolecular nutritional ingredients such as vitamin C, polyphenol substances, total flavonoids and monosaccharide is achieved through the synergistic effect of the enzymolysis and the electric field parameters, and the effect of improving the nutrient content is achieved. Meanwhile, the excessive precipitation of macromolecular polysaccharide is limited, the taste of the fruit juice is improved, the clarity of the fruit juice and the stability of nutritional ingredients are ensured, the consistency of the taste of the product is maintained, in addition, the enzyme dosage is effectively reduced, the safety problem caused by enzyme residues is reduced, the enzymolysis time and the pulse intensity are also remarkably reduced, and the production cost is reduced; the method meets the requirement of green production and is suitable for industrial large-scale application.

Disclosed in the present invention is a process for preparing a monosaccharide solution by means of acid gradient treatment of a straw lignocellulose. The process comprises the steps of: S1: performing a first acidolysis reaction on a lignocellulose biomass using an acid solution with a concentration of 50 wt% or above to obtain a first acidolysis solution; S2: uniformly mixing the first acidolysis solution with an organic solvent, and performing solid-liquid separation to obtain a glycan-containing residue; and S3: adding water and / or an acid solution to the glycan-containing residue to obtain a mixed solution with an acid concentration of 45 wt% or below, and performing a second acidolysis reaction to obtain a monosaccharide-containing reaction solution. In the present invention, pretreatment is performed at room temperature and atmospheric pressure without the need to provide additional energy, and various agents used in the pretreatment process are all recoverable, which greatly reduces the production cost. In addition, in the present invention, a relatively low liquid-solid ratio is used, monosaccharide can be directly obtained after the pretreatment, and finally a monosaccharide solution with a high and adjustable concentration is obtained, thereby avoiding a large amount of input in enzyme costs.

The invention discloses a radix pseudostellariae extract as well as a preparation method and application thereof. The preparation method comprises the following steps: providing a radix pseudostellariae raw material; the radix pseudostellariae raw material is subjected to water extraction to prepare a water extract; eluting the water extract through macroporous adsorption resin column chromatography to prepare a first extract; and eluting the first extract through ion exchange resin column chromatography to prepare the radix pseudostellariae extract. By adopting a method of combining macroporous adsorption resin column chromatography and ion exchange resin column chromatography, the yield of the radix pseudostellariae extract is improved, particularly the polysaccharide content and the specific monosaccharide content and proportion in the radix pseudostellariae extract are improved, and the functional activity of the radix pseudostellariae extract is greatly improved. Meanwhile, the preparation process greatly reduces the use of organic solvents, is green and safe in production process, and has good use value in the fields of food, medicines and the like.

The present invention discloses roxburghii polysaccharide and its preparation method and application. Wherein roxburghii crude polysaccharide is purified to obtain two polysaccharides RP1 and RP3, RP1 monosaccharide types include galacturonic acid, galactose, rhamnose and arabinose, and its molar ratio is 1.00:3.45:1.88:1.82, RP3 monosaccharide types include galactose, rhamnose and arabinose, galacturonic acid, galactose, rhamnose and arabinose, and its molar ratio is 1.00:0.37:0.37:0.25. It has been confirmed by in vitro experiments that the above-mentioned roxburghii polysaccharide has the ability to significantly inhibit the proliferation of MCF-7 breast cancer cells, as well as the effect of inducing apoptosis of MCF-7 breast cancer cells, and can be developed to prepare breast cancer therapeutic drugs; At the same time, the above-mentioned roxburghii polysaccharide has no effect on normal L929 cells. Therefore, the above-mentioned roxburghii polysaccharide has broad application prospects and has good social and economic benefits.

The invention discloses a method for improving moso bamboo cellulase hydrolysis conversion efficiency through amino acid-based deep eutectic solvent pretreatment, and belongs to the technical field of biomass recycling. The method comprises the following steps: mixing an L-cysteine solid and a formic acid solution, performing water bath heating to prepare an acidic eutectic solvent, performing microwave-assisted eutectic solvent pretreatment on moso bamboos, and performing filtration separation and enzymolysis; wherein the molar ratio of the L-cysteine to the formic acid is 1: (4-5). A deep eutectic solvent formed by formic acid and cysteine has a strong hydrogen bond network and an acid environment, beta-O-4 ether bonds in lignin are promoted to be broken, sulfydryl of cysteine participates in nucleophilic attack, a lignin-carbohydrate complex is further destroyed, formic acid can hydrolyze acetyl and glucosidic bonds in hemicellulose, and the lignin-carbohydrate complex is further destroyed. And degrading into an oligomer or monosaccharide. The phyllostachys pubescens components are efficiently separated, the cellulose enzymolysis saccharification capacity is improved, and effective utilization of all the phyllostachys pubescens components is facilitated.

The invention is applicable to the technical field of biology, and provides a method for rapidly extracting plant rhizome extracellular vesicles from monosaccharide and compound enzyme. According to the method, the plant extracellular vesicles are extracted by an enzymolysis-monosaccharide solution extraction coupling method for the first time, and the defect that an extraction method is single is overcome. According to the method, the conditions are mild, the primary property, the integrity and the biological activity of the vesicle structure are kept, the extraction purity is high, and the particle size distribution is uniform and concentrated in the range of 20-300 nm. The total protein extraction amounts of glucose, galactose and fructose solutions are respectively increased by 36.09% + / -1.18%, 37.65% + / -2.83% and 36.83% + / -2.59% compared with those of PBS (Phosphate Buffer Solution) extraction treatment. In addition, the'single ultracentrifugation 'purification process overcomes the problem of time consumption of traditional gradient centrifugation, and the time is shortened by more than 3h compared with that of a traditional extraction method. The method breaks through the technical bottleneck of large-scale production of the plant extracellular vesicles, and has great application and popularization values.

The invention discloses an opencast coal mine truck transportation road dust suppressant for a high-temperature dry environment and a preparation method of the opencast coal mine truck transportation road dust suppressant. The dust suppressant is prepared by mixing 20-30% by mass of glucose, 0.05-0.15% by mass of a penetrant, 1.5-2.5% by mass of a water-retaining agent, 1.5-2.5% by mass of a moisture absorbent and the balance of water. The dust suppressant is an environment-friendly material, the main material glucose is a monosaccharide which is most widely distributed and most important in nature, and the dust suppressant has the characteristics of being non-toxic, odorless, green, environment-friendly, wide in source and application and the like. The dust suppressant integrates the functions of wetting, moisture absorption, water retention and the like, can keep dust on a road surface transported by a large mine truck of an open pit coal mine wet and effectively suppress flying dust on the road surface, is simple in preparation process, low in material cost, green and environment-friendly in material and wide in material source, and has good flowability and feasibility. The dust suppressant is applied to the open pit coal mine end slope transportation road, the environment quality and the traffic safety of the open pit coal mine can be effectively guaranteed, and the manpower and material resource investment of environment maintenance is reduced.

The present invention relates to antibody conjugates which are particularly suitable for targeting cells expressing PTK7, in particular tumor cells. An antibody conjugate according to the present invention has structure (1): AB-[(L6) b-{Z-L-D} x] y (1) wherein AB is an antibody capable of targeting a tumor expressing PTK7; l is a joint connecting Z to D; z is a linking group; l6 is-GlcNAc (Fuc) w-(G) j-S-(L7) w '-wherein G is a monosaccharide, j is an integer in the range of 0 to 10, S is a sugar or a sugar derivative, GlcNAc is N-acetylglucosamine, and Fuc is fucose, w is 0 or 1, w' is 0, 1 or 2, and L7 is-N (H) C (O) CH2-,-N (H) C (O) CF2-or-CH2-; d is selected from the group consisting of an anthracycline, a camptothecin, a tubulysin, an endiyne, an amanitine, a duocarmycin, a maytansinoid, an aurestatin, eribulin, a BCL-XL inhibitor, a miscanthus semiaquilaria, a KSP inhibitor, a TLR agonist, an indolo-benzodiazepine dimer or a pyrrolo-benzodiazepine dimer (PBD), and an analog or prodrug thereof; b is 0 or 1; x is 1 or 2; and y is 1, 2, 3 or 4. The invention further relates to a method for preparing said antibody conjugate of structure (1) and to the use of said antibody conjugate of structure (1).

The invention provides a leavening agent and a preparation method thereof, and belongs to the technical field of leavening agents. According to the scheme, an efficient fermentation system is constructed through the synergistic effect of bacillus amyloliquefaciens, bacillus licheniformis, lactobacillus plantarum and saccharomyces cerevisiae, in the initial stage, the bacillus amyloliquefaciens secretes amylase and phytase degradation substrates, and conditions are created for the saccharomyces cerevisiae to metabolize monosaccharide to generate flavor substances and vitamins; in the middle stage, bacillus licheniformis decomposes protein to release amino acid, lactobacillus plantarum regulates pH through lactic acid metabolism to inhibit infectious microbes, and a multi-layer encapsulated compound enzyme preparation is introduced to synergistically degrade a complex substrate; in the later stage, fructooligosaccharide in the prebiotics-buffer stabilizer promotes proliferation of probiotics, mannitol and chitosan protect the activity of thalli and the function of metabolic enzymes, and the fermentation environment is stabilized; according to the whole system, the functionality, the environmental adaptability and the storage stability of the leavening agent are improved through flora synergistic metabolism, dynamic fermentation condition control and the action of the multifunctional additive, and the diversified requirements in industrial production are met.

The invention provides application of pitaya peel polysaccharide in preparation of a medicine for repairing skin wounds. The monosaccharide components of the pitaya peel polysaccharide comprise rhamnose, arabinose, galactose, glucose, xylose, mannose, galacturonic acid and glucuronic acid. Research finds that the dragon fruit peel polysaccharide remarkably accelerates the wound healing process and promotes granulation tissue formation and collagen deposition. Meanwhile, the pitaya peel polysaccharide can also promote cell proliferation and neovascularization at the skin wound part, exert an anti-inflammatory effect, remodel skin microbiota and provide a more suitable microenvironment for skin wound healing. The invention provides a new drug choice for clinically repairing skin wounds, and can be used for developing new skin wound dressings.

The invention discloses a graphite felt material loaded with metal nanoparticles as well as a preparation method and application of the graphite felt material, and belongs to the technical field of electrochemistry. The material is prepared by the following steps: S1, by taking a mixed solution of absolute ethyl alcohol and water as a solvent, preparing a solution from a transition metal organic complex / metal salt and monosaccharide or disaccharide; s2, infiltrating the graphite felt with the solution, and igniting and combusting to form a precursor coating structure; and S3, annealing to form a carbon-metal composite structure. Through the synergistic effect of carbohydrate combustion carbonization and metal salt pyrolysis, metal nanoparticles are uniformly loaded on the surfaces of graphite felt fibers, and the etching resistance of the metal catalyst in an acid environment is remarkably improved through carbon layer coating. The material has high catalytic activity and acid stability in battery electrode application, still keeps excellent electrochemical performance after acid pickling, solves the problem that a traditional metal-based catalyst is prone to failure in an acid system, and is suitable for upgrading of electrode materials of fuel cells, flow batteries and the like under strong acid working conditions.

This invention belongs to the field of new materials in novel tobacco products, specifically disclosing a method for improving the sensory evaluation quality of novel tobacco sheets produced using the slurry method. The method involves obtaining a slurry containing a binder and tobacco ash, adding additives to the slurry and adjusting the pH to 3-6, followed by stirring and reacting at a temperature of 50-95°C and low pressure to obtain a modified slurry. The modified slurry is then spread and dried to obtain novel tobacco sheets produced using the slurry method. The additives include additive A, additive B, and additive C. Additive A is at least one of ammonium dihydrogen phosphate, ammonium phosphate, and diammonium hydrogen phosphate; additive B is a compound having Formula 1; and additive C is a monosaccharide. The process described in this invention can selectively increase the release content of target aroma substances, thereby improving the smoking experience of the resulting novel tobacco sheets.

A polyether polyol P), wherein the starter compounds of the polyether polyol P) comprise an alkyl polyglycoside and one or more compounds selected from monosaccharides, oligosaccharides, sugar alcohols, polyhydric alcohols and a polyether polyol H), wherein at least one starter compound of the polyether polyol H) is an alkyl polyglycoside and / or a compound selected from monosaccharides, oligosaccharides, and sugar alcohols with at least 4 active hydrogen atoms.

The present invention produces fermented kombucha beverages with reduced alcohol content by utilizing allulose or analogues thereof as the primary fermentable sugar. These rare sugars limit ethanol production during fermentation while preserving flavor, probiotic benefits, and acidity. The invention further encompasses the incorporation of Kratom (Mitragyna speciosa) extracts or alkaloids into the fermentation process or final product, enabling a low-alcohol kombucha with potential enhanced wellness properties. The resulting beverage maintains an alcohol content below 0.5% by volume, making it suitable for non-alcoholic labeling and broader consumer appeal. The invention is preferably a bottled beverage.

The present invention relates to an extract containing Myconoside, which is derived from an in vitro system of a plant of the family Gesneraceae, in particular from the genus Haberlea and Ramonda, including species Haberlea rhodopsis Friv., Ramonda helichii (Bois.C. B. Clarke, Ramonda myconi (L.) Rchb., Ramonda nathaliae Pancicamp, and a method for preparing the extract containing Myconoside. The extract containing Myconoside, which is derived from an in vitro system of a plant of the family Gesneraceae, in particular from the genus Haberlea and Ramonda, includes the species of Haberlea rhodopsis Friv. The invention relates to an extract, in particular to petrovic, Ramonda serbic Panic, Petrovic and Ramonda serbic Panic, as well as hybrids thereof, and a preparation method of the extract. Furthermore, the invention relates to the use of said extract as a chemical, radiation and UV protection agent in human and veterinary medicine, in nutritional supplements and in cosmetics. The plant in-vitro system extract is used independently or in a mixed mode, and comprises a polyphenol component extract 1 mainly containing flavone-C glycoside and phenethyl alcohol compounds (PHE) and a Mycoside component extract 2 mainly containing phenethyl alcohol compounds (particularly Mycoside and Paucifloside). The extract 1 contains 0.1-55.0 wt% of PHE, free phenol, saccharides, organic acid, fatty acid, amino acid, sterol and the like, and the total amount is 100 wt%; the extract 2 contains 55.0 to 99.9 weight percent of PHE (particularly Myconoside and Paucifloside) and phenolic compounds, monosaccharides, disaccharides or residues thereof, and the total amount is 100 weight percent. These compounds, in particular Myconoside, have high biological activity, anti-oxidation, anti-mutation and anti-chromosome-disruption activity, and thus are suitable for use alone, also can be used in combination by metered mixing, or can be conditioned by dilution, for the preparation of natural chemical, radio and ultraviolet protective agents with a controllable degree of protection. The latter is used in humans and veterinary, nutritional supplements and cosmetics to prevent and treat harmful chemical, radiation and UV effects.

A surface treatment composition for increasing permeability in a hydrocarbon shale formation during stimulation containing a solvent and an effective amount of at least one of a quaternary monosaccharide having from about 1 to 3 moles of quaternary functional groups of and a quaternary saccharide having a number of the monosaccharide molecules ranging from about 2 to 20 bonded together by glycosidic linkage with from 1 to 3 moles of quaternary functional groups per molecule of the monosaccharide in the saccharide. A method of using the surface treatment for increasing permeability in a hydrocarbon shale formation during stimulation.

The invention discloses lotus leaf homogeneous polysaccharide LLP3-1 as well as a separation and purification method and application thereof, and belongs to the technical field of plant polysaccharide. The lotus leaf homogeneous polysaccharide LLP3-1 is composed of rhamnose, arabinose, galactose and galacturonic acid, the molar percentage of monosaccharide is 21.95: 25.33: 21.10: 31.62, the lotus leaf homogeneous polysaccharide LLP3-1 is acidic pectin polysaccharide with RG-I as a main structural domain and with part of side chains, the main chain is mainly composed of galacturonic acid and rhamnose, and the side chains are mainly composed of arabinose and galactose. The lotus leaf homogeneous polysaccharide LLP3-1 has the beneficial effects that the lotus leaf homogeneous polysaccharide LLP3-1 can obviously improve the symptoms of ulcerative colitis; the compound can be widely applied to preparation of medicines for treating ulcerative colitis, medicines for inhibiting proinflammatory factor secretion, antioxidation medicines, medicines for improving intestinal barrier integrity and functions, medicines for promoting short-chain fatty acid generation and medicines for improving intestinal flora disorder of ulcerative colitis.

The invention relates to the field of plant polysaccharide, and discloses application of lycium barbarum polysaccharide in preparation of a medicine for preventing and / or treating bone loss, monosaccharide in the lycium barbarum polysaccharide comprises detectable arabinose, glucose, galactose and gluconic acid; wherein the content of polysaccharide of which the weight-average molecular weight is greater than or equal to 6.5 kDa in the lycium barbarum polysaccharide is not less than 30wt%. Natural substances in Chinese wolfberry are adopted as active ingredients and can be safely used in an experimental dose range, bone loss is prevented or treated, particularly, Chinese wolfberry polysaccharide extracted from Chinese wolfberry is used, bone formation inhibition is relieved by competitively combining Noggin protein and blocking Noggin-BMPs interaction, and the effect of preventing or treating bone loss is achieved. The phosphorylation of Smad protein is promoted to enhance osteogenic differentiation and mineralization, and the effect of preventing or treating waste bone loss is achieved.

Intumescent composition comprising an acid donor (A), a carbon donor (B), a binder polymer (C) and a blowing agent (D). The acid donor (A) is selected from the group consisting of ammonium polyphosphate, ammonium dihydrogen phosphate, ethylenediamine phosphate, ammonium pentaborate, guanylurea phosphate, diguanidine phosphate and mixtures thereof. The carbon donor (B) is selected from the group consisting of glucose, arabinose and other monosaccharides, lactose, maltose and other disaccharides, starch, cellulose, dextrin and other polysaccharides, sorbitol, erythritol, pentaerythritol, dipentaerythritol, mannitol and other polyhydric alcohols and mixtures thereof. The blowing agent is provided in the form of microsphere particles comprising a thermoplastic polymer shell encapsulating a propellant, which microsphere particles are expandable microspheres.

The present invention provides immunogenic compositions and vaccines comprising isolated gonococcal outer membrane vesicles (OMVs). Said isolated gonococcal OMVs display lipooligosaccharide (LOS) glycan structures comprising an oligosaccharide alpha-chain elongating from Hep I having at least four hexose monosaccharides (4Hex or 5Hex) and wherein said LOS is detoxified. The present invention relates to the use of said immunogenic compositions and vaccines in medicine and, more particularly, the use of said immunogenic compositions and vaccines in immunizing a subject against Neisseria gonorrhoeae infection.

The invention belongs to the technical field of biomass high-valued treatment, and particularly relates to a supported Mo resin catalyst and a preparation method thereof, and further relates to catalysis of glucose isomerization by the supported Mo resin catalyst at low temperature. Anion exchange resin and molybdate are used as raw materials, anion resin is used as a metal carrier, and the catalyst is obtained through an impregnation method. The Mo-loaded resin catalyst prepared by the invention is simple in preparation method, and the cost of the catalyst is remarkably reduced by taking anion exchange resin as a carrier. The Mo-loaded resin catalyst prepared by the invention realizes high-efficiency low-temperature thermal catalysis of glucose isomerization for synthesis of mannose, the yield of mannose reaches 29%, the selectivity of mannose reaches 95%, when xylose is used as a substrate, the yield of lyxose reaches 31.48%, the selectivity of lyxose reaches 94.01%, and the yield of lyxose reaches 31.48%. A new synthesis path is provided for efficient catalytic synthesis of high-value monosaccharide by taking glucose and xylose as raw materials.

This invention relates to the field of ecological building materials technology, and discloses a biodegradable mold for preparing honeycomb porous concrete. The mold includes a horizontally positioned base plate and four side plates vertically surrounding the perimeter of the base plate. The upper surface of the base plate has several vertically upward-pointing cylindrical protrusions, the tops of which are flush with the tops of the side plates, arranged in a regular hexagonal honeycomb matrix. The mold is made of 100 parts of edible-grade corn starch, 20-40 parts of deionized water, and 2-8 parts of food-grade glycerin. This invention, by combining a starch-based substrate with deionized water and food-grade glycerin, improves the mold's compressive strength and ensures the precision of pore formation. The mold eliminates the need for demolding and degrades in natural soil to generate monosaccharides, providing a carbon source for the early growth of internal plants. The integrated hot-pressing structure of the base plate and protrusions eliminates seams, preventing joint leakage and deformation during vibration compaction and ensuring the interconnected porosity of the porous concrete.

The present invention relates to a metal nitrate hydrate catalyst and a method for preparing 5-hydroxymethylfurfural, using same and, more specifically, may provide: a catalyst which comprises a metal nitrate hydrate and is to prepare 5-hydroxymethylfurfural (HMF) from at least one selected from the group consisting of monosaccharides and disaccharides; and a method for preparing 5-hydroxymethylfurfural (HMF), the method comprising (a) a step of preparing 5-HMF by reaction in the presence of the catalyst from a sugar comprising at least one selected from the group consisting of monosaccharides and disaccharides. The present invention provides high 5-HMF yield and selectivity, biological and process stability, and economic efficiency by using inexpensive monosaccharides and / or disaccharides.

One of the objects of the present invention is to provide a cosmetic composition that comprises water-soluble silicone-modified polysaccharides and water, is capable of being blended in an aqueous phase of an emulsion, and improves the feeling during use, such as oiliness and stickiness. Furthermore, another object of the present invention is to provide a cosmetic composition that has water resistance and oil resistance, has excellent makeup durability, and does not come off with water but can be removed with warm water. The present invention provides a cosmetic composition comprising the following components (A) and (B): (A) a silicone-modified polysaccharide comprising one or more silicone residues bonded to a hydroxyl group in a monosaccharide unit of the polysaccharide, the silicone residues being represented by the general formula (1) and having an average number of the silicone residues bonded to one mol of the monosaccharide unit of 0.001 mol or more and 0.1 mol or less, in an amount of 0.05% to 20% by mass, based on a total mass of the cosmetic composition, and (B) water in an amount of 5% to 99% by mass, based on the total mass of the cosmetic composition.