720 results about "Xylose" patented technology

The invention discloses staphylococcus xylosus with a lipid degradation function and application of the staphylococcus xylosus in fermented food, and belongs to the field of microorganisms. The invention provides staphylococcus xylosus S3, the staphylococcus xylosus S3 has the capability of degrading lipid, and when the staphylococcus xylosus S3 is fermented in surimi for 48 hours, the acid value and the TBARS value of the fermented surimi can be effectively improved. Therefore, the staphylococcus xylosus S3 can adjust the lipid hydrolysis degree in the fermented surimi to an ideal range, and has broad application prospects in the food industry.

The invention belongs to the technical field of health-care products, and particularly relates to a fermented composition beneficial to enhancing immunity and a preparation method thereof. The fermentation composition for improving immunity is prepared by taking yeast beta-glucan, an elderberry extract, glucoraphanin, sea cucumber peptide, inulin and a traditional Chinese medicine zymolyte as fermentation raw materials, firstly inoculating bacillus coagulans and staphylococcus xylosus for aerobic fermentation, and then inoculating bifidobacterium longum for anaerobic fermentation, the aerobic fermentation stage and the anaerobic fermentation stage have a synergistic effect, so that the fermentation speed can be increased, the fermentation time can be shortened, and richer nutrient substances can be provided, and therefore, the composition has an excellent effect of enhancing the immunity; the fermentation composition is applied to preparation of capsules helpful for enhancing immunity, is helpful for enhancing human immunity, and can solve the problem that active substances in existing health-care products are difficult to effectively absorb by human bodies, so that the effect of enhancing immunity is influenced.

The invention relates to the field of fermentation processes, in particular to a method for preparing 1, 4-butanediol through multi-strain synergistic fermentation, which comprises the following steps: inoculating a first strain and a second strain into a culture medium containing glucose and / or xylose for synergistic fermentation, producing ornithine by the first strain by taking glucose and / or xylose as a substrate, and converting ornithine into 1, 4-butanediol by the second strain. The invention discloses 1, 4-butanediol. Glucose is converted into ornithine through the first strain, ornithine is converted into 1, 4-butanediol through the second strain, the first strain and the second strain are subjected to synergistic fermentation, preparation of 1, 4-butanediol through microbial synergistic fermentation is achieved, and higher metabolic capacity and higher production efficiency are achieved. The mixed sugar of xylose and glucose prepared from biomass raw materials is used as a substrate for fermentation, so that the method has the advantages that the raw materials are easy to obtain, renewable and low in cost, and the production cost can be reduced.

The invention discloses bacillus capable of tolerating various organic solvents and application of the bacillus. The invention provides a bacillus sp. YL23 strain, and the preservation number of the bacillus sp. YL23 strain is CGMCC (China General Microbiological Culture Collection Center) NO.29579. Also provided is the use thereof in the preparation of recombinant microorganisms for industrial fermentation. YL23 has potential application value in the technical field of industrial biology, including that substitute raw materials such as xylose can be utilized to ferment and produce target chemicals under acidic and high-temperature conditions. The characteristic can realize high-temperature production in the field of fermentation, and the processes of sterilization and the like are reduced. Meanwhile, the acid fermentation condition and the good organic solvent tolerance characteristic are beneficial to accumulation of target products such as organic acid.

The invention discloses a method for preparing fermentable sugar from recyclable low-concentration p-toluenesulfonic acid pretreated lignocellulose, which comprises the following steps: firstly, pretreating lignocellulose by using a low-concentration p-toluenesulfonic acid aqueous solution, and carrying out solid-liquid separation to obtain hemicellulose hydrolysate and a pretreated solid component; then saccharifying and pretreating the solid component by using cellulase to obtain hydrolysate rich in glucose, adsorbing the hemicellulose hydrolysate by using hypercrosslinked adsorption resin, carrying out solid-liquid separation to obtain hydrolysate rich in xylose, and carrying out desorption treatment on the resin by using industrial ethanol to obtain xylose; and performing rotary evaporation on the desorbed liquid to remove the industrial ethanol to obtain p-toluenesulfonic acid. According to the method, hemicellulose is efficiently degraded to obtain derived sugar of hemicellulose, meanwhile, the saccharification efficiency of cellulase is improved, p-toluenesulfonic acid is recycled through the hypercrosslinked adsorption resin, and the method has the advantages of being high in fermentable sugar yield, recyclable in acid catalyst, low in cost, environmentally friendly and the like.

The present invention discloses a natural composite flavor enhancer and a preparation method thereof, comprising the following steps: using an ultramicro grinder to crush rice wine lees and wheat gluten powder to obtain ultramicro wheat gluten powder and ultramicro rice wine lees powder; taking the ultramicro wheat gluten powder, sterile water, and protease, mixing them evenly, carrying out enzymatic hydrolysis, inactivating the enzyme after the reaction ends, filtering, and taking the filtrate, namely the wheat gluten powder enzymatic hydrolysate, for standby; taking the wheat gluten powder enzymatic hydrolysate, ultramicro rice wine lees powder, and sterile water, mixing them evenly, carrying out enzymatic hydrolysis, inactivating the enzyme after the reaction ends, filtering, and taking the filtrate, namely the composite enzymatic hydrolysate, for standby; taking the composite enzymatic hydrolysate, cysteine, xylose, glucose, granulated sugar, and salt, mixing them and carrying out a thermal reaction to obtain a reaction solution; and preparing the natural flavor enhancer by spray drying. The present invention utilizes the natural enzyme system in rice wine lees to synergistically enzymatically hydrolyze wheat gluten powder to promote the release of umami amino acids, and further strengthens the umami by using thermal reaction technology.

To provide a composite starter for improving the fermentation quality of sausages and applications therefor.SOLUTION: The invention relates to a composite starter that comprises Lactiplantibacillus plantarum YR07, Lactobacillus sakei L48, Staphylococcus xylosus S.14, and Staphylococcus sciuri S.18. The composite starter is a liquid microbial agent. The ratio of the effective viable counts of Lactiplantibacillus plantarum YR07, Lactobacillus sakei L48, Staphylococcus xylosus S.14, and Staphylococcus sciuri S.18 is 1: 1: (2-4): (2-4). Compared with traditional fermented sausages, the pH value of the sausages can be remarkably and rapidly reduced, growth of putrefying bacteria is inhibited, and the safety of the sausages is guaranteed.SELECTED DRAWING: Figure 3

The invention belongs to the technical field of microbial protein preparation, and particularly relates to a method for preparing microbial protein from crop straw and application of the microbial protein. According to the method, the crop straw is subjected to biomass conversion pretreatment, so that the accessibility and hydrolysis efficiency of cellulose are improved; on the basis, the pretreated biomass is subjected to enzymolysis through cellulase, cellulose and hemicellulose components in the biomass are converted into glucose and xylose, and the glucose and the xylose are utilized by saccharomycetes in the subsequent saccharomycetes fermentation process to synthesize the microbial protein. The microbial protein obtained through the method has the advantages of being rich in nutrition and high in essential amino acid content, and has wide application prospects in the fields of food and feed. Therefore, after the crop straw is subjected to chemical or physical-biological treatment, a new way is provided for high-value utilization of the crop straw on the basis of obtaining the nutrient-rich microbial protein.

The invention discloses a preparation method and processing equipment of herbal composite granules, and relates to the technical field of composite granules. Comprising the following components in parts by weight: 15-20 parts of soybean phospholipid, 10-15 parts of glutamine, 10-15 parts of L-arginine, 5-10 parts of a ginseng extract, 5-10 parts of phytosterol, 5-10 parts of xylooligosaccharide, 5-10 parts of inositol, 5-10 parts of a hawthorn extract, 5-10 parts of a blueberry extract, 5-10 parts of an acerola cherry extract, 0-5 parts of yeast beta glucan, 0-5 parts of a sea-buckthorn extract, 0-5 parts of a tartary buckwheat extract, 0-5 parts of haematococcus pluvialis and the like. The composition is innovative and breakthrough in successful application in the aspects of heart and cerebral vessels and anti-aging, and can regulate intestines, protect liver, reduce blood pressure and regulate blood fat; thrombus is melted, the vascular endothelial function is improved, and arteriosclerosis is prevented; meanwhile, the effects of resisting oxidation, resisting inflammation, resisting aging and enhancing immunity can also be achieved.

The invention relates to the technical field of kitchen waste treatment, in particular to a solid fungicide, a preparation method and application. The solid microbial inoculum comprises a microbial inoculum and a carrier; the microbial agent is prepared from pseudoochrobactrum saccharum, alcaligenes faecalis, achromobacter xylosoxidans, paenibacillus amyloliquefaciens, bacillus cereus, sphingobium nicotianae, serratia marcescens, stenotrophomonas maltophilia, sphingobium humus, sphingobium aquaticum and bacillus subtilis; the carrier for carrying the liquid compound bacteria is bagasse, and the maximum number of released bacteria is 2.2 * 10 < 9 > CFU / g. When the solid microbial inoculum is added into a 18 L kitchen waste reactor, the waste decrement rate is 80% within 7 days, and the COD removal rate can reach 79.1% at most. According to the solid microbial agent disclosed by the invention, organic substances in the kitchen waste can be degraded while the kitchen waste is converted from a solid state to a liquid state, so that volume reduction and weight reduction of the kitchen waste are realized; and the solid microbial inoculum is convenient to transport and operate and low in cost, has positive significance on difficulties faced by kitchen waste treatment, and has a good application prospect.

The invention discloses emblic leafflower fruit polysaccharide with sugar-controlling and lipid-lowering activity as well as a preparation method and application of the emblic leafflower fruit polysaccharide. The polysaccharide is prepared by taking fresh phyllanthus emblica pulp as a raw material through hot water extraction, yeast fermentation, desorption after XAD-16 macroporous resin adsorption, alcohol precipitation, ultrafiltration and DEAE-52 cellulose column purification. The low-molecular-weight gulcomannan is separated from phyllanthus emblica for the first time, and monosaccharide composition of the gulcomannan mainly comprises glucose, mannose and galactose and contains trace rhamnose and xylose. The polysaccharide has sugar-controlling and lipid-lowering active action targets in the whole digestive tract (the upper digestive tract: glycolipid digestion and absorption enzymes alpha-amylase, alpha-glucosidase and pancreatic lipase inhibitory activity, starch hydrolysis delay, bile acid adsorption capacity and cholesterol micelle dissolution inhibition capacity; in the lower digestive tract, the multiplication promoting capacity of glycolipid metabolism-related probiotics) shows extremely high biological activity, and can be applied to food and health care products.

The invention provides a method for synthesizing D-psicose through fermentation of escherichia coli by using D-glucose and D-xylose. The method comprises the following steps: by taking escherichia coli as a host cell, over-expressing a galactose permease gene galP, a glucokinase gene glk, a 6-phosphate glucose isomerase gene pgi, a D-psicose-6-phosphate epimerase gene alsE with an SUMO tag and a D-psicose-6-phosphate phosphatase gene a6PP, and constructing a path for synthesizing D-psicose by taking D-glucose and D-xylose as substrates; the synthetic route of D-psicose is optimized by knocking out a D-glucose phosphorylation transport pathway gene ptsG, knocking out D-fructose-6-phosphokinase genes pfkA and pfkB, silencing a glucose-6-phosphate dehydrogenase gene zwf, overexpressing glutamate transhydrogenase genes gdh1 and gdh2, knocking out a UDP-glucose-4-epimerase gene galE and knocking out a transport protein key gene fryA in D-psicose; and finally, the optimal proportion of mixed sugar fermentation is explored, so that efficient synthesis of D-psicose from escherichia coli through mixed sugar fermentation of D-glucose and D-xylose is realized.

The invention provides an electrochemical sensor for identifying amino acid enantiomers and a preparation method and application thereof, and relates to the technical field of electrochemistry, the sensor comprises a glassy carbon electrode and a xylose-inulin composite coating coated on the glassy carbon electrode. The preparation method comprises the following steps: S1, preparing the xylose-inulin composite material in a self-assembly manner; and S2, dispensing the xylose-inulin composite material obtained in S1 on the surface of a glassy carbon electrode, and airing to obtain the xylose-inulin modified glassy carbon electrode. The glassy carbon electrode modified by the composite material has a large number of active sites, and the modified electrode shows selective recognition on amino acid enantiomers by effectively utilizing the synergistic effect of xylose and inulin. The electrode disclosed by the invention has good stability, specificity and chiral recognition capability on the amino acid enantiomers, and has good application prospects in quantitative analysis of the amino acid enantiomers.

The invention discloses a black tea fermentation process, and relates to the technical field of tea making processes, and the black tea fermentation process specifically comprises the following steps: black tea is crushed and sieved to 150-200 meshes, and black tea fine powder is obtained; uniformly mixing black tea, glucose, xylooligosaccharide, vitamins, sodium chloride, calcium chloride, fructo-oligosaccharide and water, sterilizing to obtain a sterilized culture medium, and cooling for later use; carrying out enlarged culture on lactic acid bacteria to obtain a secondary seed solution; transferring the secondary seed solution into a sterilized culture medium, adding magnetic composite particles, and culturing and fermenting to obtain a fermentation solution; performing high-temperature treatment on the fermentation liquor, and adding a preservative to obtain black tea fermentation filtrate; by introducing a double-component system of calcium chloride and xylooligosaccharide, efficient release and stabilization of active ingredients of the black tea are realized, by introducing a magnetic composite particle and alternating magnetic field staged control technology, the fermentation efficiency and stability of the black tea are further improved, and the efficient, stable and sustainable black tea fermentation process is realized.

The present invention belongs to the technical field of functional / health food, and specifically relates to a prebiotic composition and its preparation and application in maintaining probiotic activity and promoting probiotic proliferation. The prebiotic composition includes 1-20 parts of sugar alcohol, 1-10 parts of sustained-release embedding material, and 20-100 parts of prebiotics by weight; the prebiotics are oligofructose, oligoxylose, oligomaltosan and stachyose; the mass ratio of oligofructose, oligoxylose, oligomaltosan and stachyose is 2:1:1:2. And the composition is granulated twice, has good solubility, can effectively promote the proliferation of probiotics and maintain their activity, and improves the effectiveness of probiotics.

The invention discloses a feed for improving the flavor of broiler chickens and a preparation method of the feed, and belongs to the technical field of poultry feeds and feed preparation. Comprising the following components in parts by weight: 55 to 65 parts of basic ration, 35 to 40 parts of sea buckthorn pomace and bean dreg combined ferment, 3 to 5 parts of aquatic product leftover enzymatic hydrolysate, 3.5 to 4.0 parts of trehalose, 1.0 to 1.5 parts of ground cinnamon, 1.0 to 1.5 parts of xylooligosaccharide, 0.8 to 1.0 part of choline, 0.0001 to 0.0002 part of organic selenium and 0.01 to 0.02 part of folic acid. The mass ratio of the choline to the aquatic product leftover enzymatic hydrolysate is 1: (3.0-5.6); the mass ratio of the organic selenium to the sea buckthorn pomace and bean dreg combined fermentation product is 1: (58-100); the sea buckthorn pomace and bean dreg combined fermentation product is prepared by respectively pretreating sea buckthorn pomace and bean dregs and then carrying out aerobic, facultative and anaerobic continuous three-stage fermentation. The technical limitations that flavor substances of traditional feed are easy to inactivate and the utilization rate of agricultural by-products is low are broken through, and the breakthrough of flavor quality upgrading, efficient resource conversion and breeding benefit optimization is achieved.

The invention discloses a composition helpful for maintaining the healthy level of blood sugar. The composition is prepared from the following components in parts by weight: 10-40 parts of diglyceride powder, 15-40 parts of soybean protein isolate, 10-30 parts of xylooligosaccharide, 1-4 parts of mulberry leaf extract, 1-4 parts of radix puerariae extract and 1-4 parts of radix astragali seu hedysari extract. According to the composition disclosed by the invention, a multi-dimensional regulation and control network of metabolic regulation, nutritional supplement and micro-ecological balance can be formed, so that a plurality of components generate a synergistic effect on blood sugar regulation, and the blood sugar regulation capability is remarkably improved.

The invention discloses kluyveromyces marxianus and application of the kluyveromyces marxianus in production of single-cell protein by taking straw as a raw material. The Kluyveromyces marxianus is a ZH-2 bacterial strain which is CGMCC (China General Microbiological Culture Collection Center) No.32295 The strain is obtained from a wild strain in a laboratory adaptive evolution mode, wheat straw and an inorganic nitrogen source can be used as raw materials for efficiently producing single-cell protein, compared with a parent strain, the utilization speed and the utilization rate of biomass, glucose and xylose are remarkably increased, the yield of ZH-2 SCP can reach 0.047 g.g <-1 >, and the yield of ZH-2 SCP can reach 0.045 g.g <-1 >. And the essential amino acid mode basically accords with adult and infant amino acid modes, and can be used as high-quality protein nutrition supply. The Kluyveromyces marxianus ZH-2 strain capable of obtaining single-cell protein by fermenting wheat straw as a raw material is provided from the perspective of utilizing cheap waste resources, so that the production cost of SCP is greatly reduced, and the problem of protein resource shortage is effectively solved.

The invention relates to the technical field of functional food, in particular to immune regulation type prebiotic syrup with synergy of galactomannan. The active components of the composite solid beverage are prepared from the following raw materials in percentage by weight: 20%-35% of fructo-oligosaccharide, 10%-18% of galactooligosaccharide, 8%-15% of stachyose, 3%-7% of xylooligosaccharide, 5%-12% of lactitol, 5%-10% of galactomannan, 2%-5% of yeast beta-glucan and 1%-3% of N-acetylglucosamine. The composition further comprises 4-8% of inulin and 3-6% of resistant dextrin as a matrix filling and slow-release carrier, and the sum of the weight percentages of all the active ingredients and the carrier is 100%. By remodeling intestinal microecology and inhibiting inflammation pathways, the intestinal inflammation state can be remarkably improved, expression of intestinal mucosa tight junction protein is promoted, and an innovative solution is provided for people suffering from chronic bowel diseases and immune imbalance.

The invention provides a healthy food, in particular to a hypoglycemic composition based on homology of medicine and food and gradient fermentation type prebiotics, which is a dry powder preparation and comprises a component A and a component B, the component A is a medicinal and edible component, and the component B is a prebiotic component; the component A is prepared from the following components in parts by mass: 2 to 15 parts of folium mori extract, 2 to 10 parts of bitter gourd extract, 2 to 20 parts of rhizoma dioscoreae extract, 1 to 10 parts of radix puerariae extract, 2 to 10 parts of fructus lycii extract, 0.5 to 5 parts of radix polygonati officinalis extract and 0.5 to 5 parts of rhizoma polygonati extract; the component B is prepared from 20 to 50 parts of resistant dextrin, 5 to 15 parts of xylooligosaccharide, 3 to 10 parts of inulin and 35 to 50 parts of D-psicose. The hypoglycemic activity of the traditional medicinal and edible materials is organically combined with the gradient fermentation type prebiotics, so that the hypoglycemic effect is realized by synergism of multiple action mechanisms, and the problems of single hypoglycemic mechanism and non-ideal blood sugar regulation effect of the existing product are solved.

The invention provides a feed for relieving weaning stress of lambs and a preparation method of the feed, and belongs to the field of animal feeds. The feed disclosed by the invention is prepared from the following components in parts by weight: 35-40 parts of puffed corn, 15-20 parts of enzymolysis soybean meal, 5-8 parts of fish meal, 5-8 parts of alfalfa meal, 0.3-3 parts of an organic trace element compound, 0.1-2 parts of a vitamin compound, 3-5 parts of whey powder, 0.5-1 part of butyrin, 0.3-0.5 part of glutamine and 0.2-0.3 part of a radix astragali-spina date seed compound extract. 0.2 to 0.3 part of xylooligosaccharide-xylanase compound, 0.05 to 0.1 part of pancreatin active peptide and 0.1 to 2 parts of complex microbial inoculant. The weaning stress of the lambs is reduced through a targeted intestinal tract-immunity-nerve regulation ternary synergistic formula, the digestive system development of the weaned lambs can be obviously improved, the activity of digestive enzymes can be improved, and therefore the weight gain of the lambs is obviously improved, and the lambs stably pass through the weaning period.

The invention relates to the technical field of food processing, and discloses low-GI yoghurt added with quinoa protein and a preparation method of the low-GI yoghurt, the yoghurt comprises the following raw materials: raw milk, xylitol, xylooligosaccharide, erythritol, inulin, konjac polysaccharide, quinoa protein and a leavening agent; the preparation method comprises the following steps: mixing the raw materials, sterilizing, inoculating a leavening agent, fermenting and performing after-ripening to form a yoghourt product. The method disclosed by the invention is feasible in theory and simple to operate, the glycemic index of the obtained product is lower than 30 due to the introduction of the high-nutrition quinoa protein and the compounding of the functional sugar, and the product is rich in nutrition, fine and smooth in taste and good in flavor.

The invention discloses a lignocellulose biomass-based hard carbon negative electrode material as well as a preparation method and application thereof. The method comprises the following steps: carrying out hydrothermal pretreatment on lignocellulose biomass by using low-corrosivity maleic acid, and regulating and controlling the composition of the lignocellulose biomass, the maleic acid and the lignocellulose to obtain a precursor rich in lignin and cellulose; in the pyrolysis and carbonization process, the thermal stability of the precursor is improved, and the lignin can more effectively inhibit the rapid concentrated pyrolysis of cellulose, so that the rearrangement of pyrolysis products is weakened. The method is beneficial for preventing overgrowth of hard carbon graphite microcrystals during high-temperature carbonization, so that the hard carbon material with large interlayer spacing and abundant small-size closed pores is prepared. The hard carbon material shows high specific capacity and excellent rate capability when being applied to the negative electrode of the sodium-ion battery. Meanwhile, xylose and furfural generated by decomposition of hemicellulose in a liquid phase can be effectively collected, and full-component utilization of biomass is achieved. The requirements of green production are met, and industrial application is easy to realize.

The present invention belongs to the technical field of sewage treatment, and specifically relates to a sewage treatment catalyst prepared from biomass waste and its application. The present invention uses furfural or xylose production waste residue as a preparation raw material, and obtains nitrogen-doped activated carbon with rich structural defects through steps such as washing, carbonization, and activation. It can be used to catalyze the advanced oxidation of persulfate to treat phenol wastewater and organic dye wastewater, and can also be used as a carrier to introduce metal elements through conventional catalyst preparation processes such as physical mixing, coprecipitation, and impregnation, so that it has new catalytic properties. The preparation process of the present invention has the advantages of being environmentally friendly and is particularly suitable for sewage treatment with a high organic content. The method provided by the present invention has the advantages of environmentally friendly raw material sources, high organic pollutant degradation rate, and simple preparation process, and is particularly suitable for industrial application. The preparation method of the catalyst of the present invention is simple and low-cost, and the prepared catalyst is not only environmentally friendly but also has a long service life.

The invention relates to a protein feed prepared from biologically refined distiller's grains and a preparation method thereof, and relates to the technical field of bioengineering and feed resource development. The method comprises the following steps: (1) sequentially carrying out acid pretreatment and double-enzyme synergistic hydrolysis on the white spirit vinasse to obtain hydrolysate containing fermentable sugar; (2) adding a candida utilis yeast liquid and urea, and carrying out carbon-nitrogen synergistic liquid fermentation to obtain a fermentation liquid with the viable count of candida utilis greater than or equal to 4.0 * 10 < 8 > CFU / mL; and drying. According to the method, the white spirit vinasse is subjected to diluted acid high-pressure pretreatment and double-enzyme synergistic hydrolysis, then candida utilis is utilized for carbon-nitrogen synergistic liquid fermentation, efficient utilization of glucose and xylose is achieved, and the mycoprotein yield is larger than or equal to 0.70 g / L / h; according to the method, all-component high-value utilization of the distiller's grains is realized, and a process path with industrial production potential is provided for preparing the protein feed by biorefining the distiller's grains.

The present invention discloses a method for preparing furfural, which includes: under the action of a heteropolyacid-based phase transfer catalyst, an intramolecular dehydration reaction occurs for xylose-based carbohydrates in a ternary two-phase reaction medium composed of a low-boiling organic solvent, a protic solvent, and an ionic organic ammonium chloride. The catalyst used in the present invention has the property of phase transfer, that is, its solubility in the reaction medium increases at high temperature, and it catalyzes the dehydration of xylose in the form of a liquid acid; after the reaction, the solubility decreases and it precipitates in the form of a solid, which is convenient for the recovery and separation of the catalyst, and largely solves the problems of low efficiency of solid acid catalysts and difficult separation of liquid acid catalysts. And an advanced reaction medium is coupled to increase the solubility of xylose-based carbohydrates and the solvation effect on xylose. Through the optimization of the catalyst and the reaction medium, the reaction performance of the reaction system is effectively improved.

The invention provides an antistatic heat-insulating coating and a preparation method thereof, and relates to the technical field of coatings. The antistatic heat-insulating coating is prepared from polyacrylate, titanium dioxide, antistatic heat-insulating filler, hydrophilic aerogel, diatomite, water and other raw materials, the polyacrylate comprises Vitrimer xylose polyacrylate with a specific structure, the Vitrimer xylose polyacrylate is used as a substrate material of the coating, and the mechanical property, heat resistance, durability and the like of the coating can be remarkably improved; furthermore, the antistatic heat-insulating filler comprises an antistatic heat-insulating composite material which is formed by compounding a light material, polypyrrole and a carbon material, the composite material is prepared by an in-situ polymerization method, and a unique structure that a composite microlayer is formed by compounding the polypyrrole and the carbon material on the surface of the light material is formed; the anti-static heat-insulating composite material and other raw materials in the coating cooperate with each other to act together, so that the prepared coating has good anti-static performance and heat-insulating performance.

The invention belongs to the technical field of probiotics, and the present invention specifically discloses a probiotic composition and its preparation method and application, including the following steps: Hawthorn powder, carob powder, elderberry powder are mixed to obtain a mixture; The mixture is added to a liquid culture medium to obtain a fermentation medium; Lactobacillus acidophilus seed liquid and Lactobacillus rhamnosus seed liquid are inoculated into a fermentation medium, and fermentation is performed to obtain a fermentation product; Fermentation product, Bifidobacterium bifidum, Bifidobacterium animalis, xylo-oligosaccharides, inulin, and β-cyclodextrin are mixed to obtain a probiotic composition. The present invention mixes hawthorn powder, carob powder, and elderberry powder, and as a fermentation medium, inoculates Lactobacillus acidophilus seed liquid and Lactobacillus rhamnosus seed liquid, and fermentation and culture are performed, and then the fermentation product is mixed with Bifidobacterium bifidum, Bifidobacterium animalis, xylo-oligosaccharides, inulin, and β-cyclodextrin, and a probiotic composition with excellent antioxidant and anti-inflammatory effects is obtained.

The present invention provides a combination of superior bacteria for liquefying and degrading food waste and its application. The combination includes Pseudomonas aglycones, Bacillus alcaligenes faecalis, Bacillus amyloliquefaciens, Serratia marcescens, Sphingobacillus suis, Bacillus subtilis, Achromobacter xylosoxidans, Bacillus cereus, Sphingobacillus fusoni, Oligotrophomonas maltophilia, and Sphingobacillus humus. The combination of bacteria can effectively reduce the amount of food waste, and the maximum reduction can be 14.66%, and the COD removal rate can reach 98.19%. The combination of bacteria of the present invention can efficiently degrade and liquefy food waste, and can achieve a high reduction rate and liquefaction effect, which is conducive to the absorption and utilization of nutrients in the subsequent food waste biological resource conversion process.

Disclosed in the present invention is a genetically-engineered Yarrowia lipolytica strain highly producing carotenoids, which is obtained by constructing a xylose-induced activation system in the genetically-engineered Yarrowia lipolytica strain XK17 to control the induced expression of critical enzymes for synthesis of astaxanthin, wherein the critical enzymes for synthesis of astaxanthin comprise β-carotene hydroxylase CrtZ and β-carotene ketonase CrtW. Further disclosed in the present invention is the use of the genetically-engineered Yarrowia lipolytica strain in fermentation production of carotenoids. The present invention starts from the Yarrowia lipolytica strain XK17 highly producing β-carotene, and uses the xylose-induced activation system to separately control the expressions of the β-carotene hydroxylase (CrtZ) and β-carotene ketonase (CrtW) or only control the expression of the CrtW or the CrtZ, thereby separately achieving highly producing astaxanthin, or canthaxanthin, or zeaxanthin under the functions of a proper xylose induction concentration and induction opportunity.