38 results about "Fiber degradation" patented technology

The invention discloses a degradable solid insulating material for a transformer. The degradable solid insulating material comprises the following raw materials in percentage by mass: 43-58% of bio-based epoxy resin; 3%-6% of polyethylene glycol; 25%-35% of a functional filler; 5%-10% of degradable reinforced fibers; 3%-8% of a degradation triggering auxiliary agent; 1%-3% of a degradation agent; the invention relates to the technical field of electrical insulation. According to the degradable solid insulating material for the transformer, natural degradation is achieved through hydrolyzable ester bonds of the bio-based epoxy resin in cooperation with the polylactic acid microspheres, the solid waste amount is reduced, meanwhile, degradation products are fatty acid and polysaccharide substances, the environmental safety standard is guaranteed, and through the synergistic effect of the modified calcined kaolin and the boron nitride nanosheets, the breakdown strength is improved; the insulation requirement is met, meanwhile, the heat conduction efficiency can be improved, the dielectric loss is reduced by filling micropores with nano silicon micro powder, and the density of the material is effectively reduced while the bending strength of the material is improved through alkali treatment of linen fibers.

The invention belongs to the technical field of feed preparation, and particularly relates to a method for preparing a feed raw material through synergistic fermentation of rapeseed dregs and pomace. The method systematically solves the technical problems of anti-nutritional factor residue, pomace decay risk, low fiber utilization rate, unbalanced nutrition and the like of rapeseed meal, and has the core advantages of thoroughness and safety of detoxification, no chemical residue, significantly improved fiber degradation rate, and significantly improved process stability by inhibiting infectious microbe pollution through segmented temperature control. The method provides an industrial feasible path for high-value utilization of the rapeseed dregs and the pomace, and has both economic benefits and environmental benefits.

The invention provides an application of GH48 / GH57 / GH9 family genes carried by bacillus altitudinis H1 in improvement of corn straw rumen fermentation digestibility, and belongs to the technical field of degrading bacteria. According to the invention, a cellulose degradation strain H1 is separated and screened from a goat rumen content, and the preservation number of the strain is GDMCC No: 67152. The invention further discloses a preparation method of the cellulose degradation strain H1. An in-vitro fermentation experiment shows that the soluble carbohydrate content and the lignin content of the corn straw fermented by the H1 strain are remarkably reduced, the 48-hour gas production rate is remarkably reduced, and the propionic acid content is also remarkably reduced. The result shows that the H1 strain has stronger lignin decomposition capability and preferentially degrades hemicellulose and pectin. The H1 strain provided by the invention is proved to have a good corn straw degradation effect.

The invention relates to the technical field of biology, in particular to a method for rapidly degrading apple pomace fibers to improve nutrient digestibility and a fermented feed. The method comprises the following steps: uniformly mixing apple pomace with wheat bran and urea to obtain a fermentation material; adjusting the water content of the fermented material to 65-70%, inoculating 5-12% of lactobacillus plantarum, 1-10% of saccharomyces cerevisiae and 1-5% of bacillus subtilis, adding 1-1.5% of cellulase, 0.5-1% of pectinase, 0.5-1% of xylanase and 0.1-0.5% of beta-glucanase, and carrying out solid-state fermentation at 30-35 DEG C for more than or equal to 48 hours. According to the method disclosed by the invention, the content of crude protein is remarkably increased, and the fiber degradation rate and the nutrient digestibility are also remarkably improved. According to the method, the apple pomace can be converted into the high-digestibility feed, and an important foundation is laid for applying the apple pomace as a feed grain substitute raw material to the feed in a large scale.

The invention belongs to the technical field of road materials, and particularly relates to a protective material for a cutting slope and a preparation method of the protective material. The modified bentonite and the bio-based binder form a compact matrix, so that the compressive strength is improved; the basalt fibers and the modified PHB fibers have a synergistic effect, the tensile strength is improved to 18-20 MPa, and the deformation requirement of + / -5% of the slope is met; the bio-based binder (starch-PLA) and the modified PHB fiber (the degradation period is 9-12 months) provide initial support for plant roots, degradation products are non-toxic and harmless, and the vegetation coverage rate is increased within one year.

This invention discloses a culture medium for enhancing the activity of in vitro fiber-degrading bacteria in the gut microbiota, its preparation method, and its application, belonging to the field of microbial culture medium technology. The culture medium provided by this invention can effectively enhance the activity of fiber-degrading bacteria in the gut microbiota, promote their growth and metabolism, and thus significantly improve the fiber degradation capacity of in vitro microbiota. Compared with commonly used culture media, the concentration of total short-chain fatty acids in fiber fermentation products can be increased by up to approximately 50%. Compared with commonly used culture media, the culture medium provided by this invention can alter the composition of the fiber-degrading bacterial community in the gut microbiota, with significant differences detected in the abundance of nine genera, which may be the reason for the different fermentation efficiencies. The culture medium provided by this invention helps to more fully evaluate the fermentability of dietary fiber, and further study its metabolic pathways, product synthesis, enzyme activity, and biocatalytic mechanisms, which has significant value for the optimization of biomimetic digestive systems in the field of animal nutrition.

The invention provides a cellulose degrading strain for degrading traditional Chinese medicine residues, a microbial agent and a method for degrading the traditional Chinese medicine residues, and relates to the technical field of microorganisms. The invention provides a cellulose degrading strain for degrading traditional Chinese medicine residues, which comprises Cellulomonas X-5 with the preservation number of CGMCC (China General Microbiological Culture Collection Center) No.34614, and Cellulomonas X-5 with the preservation number of CGMCC No.34614; the preservation number of the cellulomicrobacterium X-7 is CGMCC (China General Microbiological Culture Collection Center) No.34615 According to the research and verification of the application, both the cellulomonas X-5 and the cellulomicrobacterium X-7 have good fiber degradation activity, especially for multi-medicinal material mixed traditional Chinese medicine residues, the decomposition rate of the traditional Chinese medicine residues can be remarkably improved, and meanwhile, the contents of quick-acting phosphorus and alkali-hydrolyzable nitrogen in the degraded traditional Chinese medicine residues can also be improved. Therefore, the cellulose degrading strain obtained in the invention not only is helpful for realizing resource utilization of agricultural wastes, but also can effectively improve the soil fertility and reduce the risk of environmental pollution.

The utility model relates to the field of forage grass processing, and discloses a steam explosion device for processing rice straws to produce roughage, which comprises a vertically arranged explosion tank, a feed port arranged above the explosion tank, a feed valve arranged on the feed port, a discharge port arranged below the explosion tank, and a discharge valve arranged on the discharge port. A plurality of air inlets are formed in the bottom of the blasting tank; a plurality of spiral material guide plates which are uniformly distributed on the circumference are fixed on the inner wall of the blasting tank; the spiral material guide plates extend to the lower part of the blasting tank from the upper part of the blasting tank; and each air inlet is positioned between two corresponding adjacent spiral material guide plates. The problems that in a traditional device, materials are heated unevenly, and the fiber degradation effect is poor are effectively solved, full contact of steam and straw is achieved, the straw is heated evenly, and the straw treatment efficiency and the coarse fodder quality are improved.

The invention discloses a biological pretreatment method for improving the true protein production efficiency of wet distiller's grains, and belongs to the technical field of biological pretreatment, the method comprises the following steps: by combining chemical and biological multi-stage pretreatment modes, alkali and urea are combined in the first-stage chemical treatment process, and the second-stage chemical treatment process is combined in the second-stage chemical treatment process; the fiber structure of the wet distiller's grains is better damaged at normal temperature, and infectious microbe pollution is reduced for subsequent fermentation. In the second-stage anaerobic fermentation treatment, fibers in the wet distillers' grains are converted into sugar through the synergistic effect of bacteria and enzymes, the pH of the wet distillers' grains is reduced, and conditions are provided for growth of subsequent aerobic fermentation candida utilis yeast thalli. In the third stage of aerobic fermentation treatment of the candida utilis, urea and fiber in the pretreatment process in the early stage are used for degrading sugar to generate mycoprotein, so that the true protein improvement rate and the fiber degradation rate of the white spirit vinasse after pretreatment are effectively improved, the loss rate in the pretreatment process is greatly reduced, and finally, the true protein production efficiency of the wet white spirit vinasse is improved.

The application discloses a biological pretreatment method for improving the efficiency of producing true protein from wet distiller's grains, and belongs to the technical field of biological pretreatment, which comprises the following steps: by combining chemical and biological multi-stage pretreatment methods, alkali and urea are used in the first chemical treatment process to realize better destruction of the fiber structure of the wet distiller's grains at normal temperature and reduce the contamination of miscellaneous bacteria in subsequent fermentation; the second anaerobic fermentation treatment converts the fibers in the wet distiller's grains into sugar through the synergistic effect of bacteria and enzymes, and reduces the pH of the wet distiller's grains, thereby providing conditions for the growth of Candida utilis in subsequent aerobic fermentation; and the third aerobic fermentation treatment utilizes the urea and fiber degradation sugar in the previous pretreatment process to generate cell protein, effectively improves the true protein improvement rate and fiber degradation rate of the distiller's grains after the pretreatment is completed, greatly reduces the loss rate in the pretreatment process, and finally improves the efficiency of producing true protein from the wet distiller's grains.

The invention discloses a method for cultivating edible mushrooms by utilizing vinasse, which comprises the following steps: S1, pretreating Maotai-flavor vinasse: crushing the Maotai-flavor vinasse until the particle size is 1-3mm, and removing impurities to obtain vinasse coarse powder; s2, tannin degradation: adding a tannin degradation agent into the vinasse coarse powder for fermentation to obtain tannin degraded vinasse; s3, crude fiber degradation: adding a crude fiber degradation aid into the tannin degraded vinasse, adjusting the water content of the system to 55-60%, and performing enzymolysis at 32-36 DEG C for 12-24 hours to obtain enzymolysis soy sauce flavor type vinasse; s4, preparation of a culture medium: uniformly mixing 65-75 parts by weight of the enzymolysis Maotai-flavor vinasse, 0.3-1.0 part by weight of monopotassium phosphate, 0.9-1.3 parts by weight of magnesium sulfate, 0.8-2.2 parts by weight of gypsum, 1.0-1.9 parts by weight of calcium superphosphate and 0.5-1.5 parts by weight of a pH buffer agent, and adjusting the pH value to 5-8 to obtain the edible mushroom culture medium; and S5, inoculating the culture medium with edible fungi.

The application discloses acetic acid-producing proteobacteria and application thereof in preparation of feed additives. 35 strains with good fiber degradation function are obtained from Holstein cow rumen fluid through preliminary screening, and bran medium is used for screening the 35 strains, and it is found that 25 strains have the ability of converting complex carbon source into reducing sugar, and the most powerful strains of different genera are selected for in-vitro fermentation verification, and the fiber utilization efficiency of the strains on ruminant TMR is observed, and it is found that the acetic acid-producing proteobacteria (microbial preservation number is CGMCC No. 33516) has the most powerful function on feed dry matter degradation rate and fiber degradation rate, and can improve rumen fermentation liquid pH value, and significantly improve the content of acetic acid, isobutyric acid, butyric acid, valeric acid and total rumen volatile fatty acid. The acetic acid-producing proteobacteria provided by the application has application prospect in improving feed fiber utilization rate or improving animal digestion capacity.

The invention belongs to the technical field of animal feed treatment, and particularly relates to aspergillus niger split polysaccharide monooxygenase and application thereof in promoting rumen degradation of straw. The amino acid sequence of the aspergillus niger split polysaccharide monooxygenase is as shown in SEQ ID NO. 2. The Aspergillus niger split polysaccharide monooxygenase can change the surface structure of straw, promote the growth of classification bacteria related to fiber degradation in rumen, and improve the rumen degradation rate of straw.

The present application relates to seaweed fiber preparation technical field, disclose a kind of seaweed fiber and its preparation method, including: the chemical modification of sodium alginate macromolecular chain, introduce controllable hydrolysis and can catalyze main chain break side chain group, while introducing weak covalent bond sensitive to spinning shear force, and dispersion reducing agent microcapsule in spinning dope, to carry out self-repair to uneven segment in spinning process, the present application is by the disintegration of fiber main chain with an internal chemical reaction end point not affected by external environment fluctuation is bound, realizes the transformation of fiber degradation behavior from passive environmental response to active programmed structure disintegration, combined with self-repair quality control mechanism in spinning process, ensure that the programmed degradation performance in the high uniformity and predictability in final product.

The invention relates to the technical field of microbial fermentation, and discloses a pasture leavening agent for improving crude protein, reducing crude fiber and improving digestibility, which comprises three strains, namely aspergillus niger, candida utilis and lactobacillus pentosus. The invention relates to a self-induced peptide premix, which is composed of a covalent complex, a lignin-hemicellulose-L-arabinose, a phosphorylated urea-glycine chelate, a synthetic self-induced peptide premix and a carrier. According to the method, a specific initial carbon source is provided for aspergillus niger through LHLAC to start fiber degradation, synchronous slow release of a nitrogen source is achieved through PUGC, and protein anabolism of candida utilis is activated through sAIP. According to the scheme, a time sequence synergistic mechanism of fiber degradation, protein synthesis and acidification preservation is constructed, the problem of low efficiency caused by mismatching of all metabolic processes in the prior art is solved, and effective degradation of crude fibers of forage grass, great increase of crude protein content and remarkable improvement of final digestibility are realized.

The application discloses an energy-saving controllable plant fiber degradation drainage plate, which is made of a mixture of PBAT, plant fiber and PHA through an extrusion molding process and comprises a bottom plate, a plurality of vertical upward fin plates are fixedly connected to the bottom plate along the length direction of the bottom plate, and a plurality of notches are cut on each fin plate. The application further discloses a production equipment of the drainage plate, which comprises a lifting mechanism, a positioning mechanism, a clamping mechanism and a cutting mechanism, the drainage plate is clamped by the clamping mechanism, the positioning mechanism is inserted between adjacent fin plates, and the fin plate is cut by the cutting mechanism to form the notches. The plurality of notches are formed on the fin plate, so that the drainage plate has the drainage function and the overall weight of the drainage plate is reduced, and transportation and installation are facilitated.

The invention relates to the technical field of animal feed, in particular to an enzyme-pretreated high-fiber feed formula and a preparation method thereof. The formula comprises 8-18% of an enzyme pretreatment fiber raw material, 18-28% of a protein raw material, 35-55% of an energy raw material, 3-8% of a mineral substance and vitamin premix, 2-6% of vegetable fat and the balance of water, the finished product crude fiber is 5-9%, and the water content is not higher than 12%. The enzyme-pretreated fiber raw material is obtained through short-range action of a composite fiber degrading enzyme under the conditions that the temperature is 45-55 DEG C and the pH value is 4.5-5.5, and the enzyme-pretreated fiber raw material is dried and crushed, so that soluble oligosaccharide accounts for 5-12% of the mass of the enzyme-pretreated fiber raw material. Under the condition that the steam intensity and the water content are not improved, the durability of particles is improved, pulverization and grease migration are reduced, the NDF / ADF digestibility and AMEn are improved in cooperation with effective utilization of fiber fractions, then FCR and EPEF are improved, and meanwhile the high microelement retention rate is kept after storage.

This invention belongs to the field of road material technology, and more specifically relates to a protective material for cutting slopes and its preparation method. The modified bentonite and bio-based binder form a dense matrix, enhancing compressive strength. The synergistic effect of basalt fiber and modified PHB fiber increases tensile strength to 18-20 MPa, adapting to slope deformation requirements of ±5%. The bio-based binder (starch-PLA) and modified PHB fiber (degradation cycle of 9-12 months) provide initial support for plant roots, and the degradation products are non-toxic and harmless, increasing vegetation coverage within one year.

This invention discloses a method for preparing high aspect ratio rod-shaped cellulose nanocrystals, belonging to the field of cellulose material preparation technology. Using natural cellulose as raw material, this invention employs a step-by-step oxidation process under alkaline conditions, combined with halogen salt catalysis, to add hypochlorite solution in stages, thereby preparing high aspect ratio rod-shaped cellulose nanocrystals with diameters of 10-50 nm, lengths of 1-10 μm, and aspect ratios of 100-200. This invention effectively solves the problems of excessive fiber degradation, uneven functional group distribution, and easy product agglomeration in traditional sodium hypochlorite oxidation methods through a step-by-step oxidation strategy, achieving precise control of the aspect ratio of cellulose. The resulting cellulose exhibits excellent aspect ratio and dispersibility, and the process conditions are mild and environmentally friendly, providing a reliable pathway for the industrial production of high-performance cellulose materials.

This invention relates to the fields of fermentation engineering and feed processing technology, and in particular to the application of a strain of *Pediococcus lactis* NR and its combined enzyme preparation in the preparation of fermented wheat bran. This invention provides a strain of *Pediococcus lactis* NR, with the preservation number CCTCC NO: M 20252979. This invention utilizes *Pediococcus lactis* NR to improve the quality of wheat bran feed, with low cost and a safe and reliable strain. Simultaneously, this invention provides a method for preparing fermented wheat bran based on the synergistic fermentation of *Pediococcus lactis* and a complex enzyme system. Under anaerobic conditions, *Pediococcus lactis* NR converts the monosaccharides released by enzymatic hydrolysis into organic acids, further promoting the enzymatic hydrolysis process. This invention effectively solves the problems of high levels of anti-nutritional factors and difficult fiber degradation in traditional fermentation technologies, resulting in low digestible energy and poor palatability of wheat bran. It enables fermented wheat bran to partially replace corn as an economical energy feed, significantly reducing feed costs and possessing significant application value and promising prospects for promotion.

The application discloses a compound lactic acid bacteria additive for improving the quality of corn straw-sweet potato vine compound silage and application thereof, and belongs to the field of feed processing. The compound lactic acid bacteria additive comprises the following components in parts by weight: 0.5-1.5 parts of lactobacillus plantarum and 0.8-1.2 parts of lactobacillus buchneri. The compound lactic acid bacteria additive can significantly improve the crude protein content of corn straw-sweet potato vine compound silage, promote the degradation of fiber components to improve the digestion and utilization rate, quickly reduce and maintain the low pH value of the silage, reasonably accumulate lactic acid, inhibit the generation of butyric acid and the accumulation of ammonia nitrogen, maintain a high propionic acid content to prolong the aerobic stable period of the feed, and has better effects than traditional silage additives in terms of fiber degradation, protein retention, fermentation environment regulation and the like, so that the research blank of the special additive for the compound raw material silage is filled, and the resource utilization of agricultural wastes is realized.

The invention provides a tar-reducing and harm-reducing material for cigarettes as well as a preparation method and application of the tar-reducing and harm-reducing material. According to the preparation method, a ganoderma lucidum tube layer is used as a raw material, and the modified ganoderma lucidum material with a unique structure is prepared through the steps of enzyme-assisted fiber degradation, surface smoothing treatment and the like. Wherein hyphae of fungus tubes of raw materials of the ganoderma lucidum fungus tube layer are mutually interwoven and wound to form a unique three-dimensional porous network structure, the pore structure is further optimized through modification treatment, through multi-stage pores are formed, and when cigarette smoke passes through, active groups on the surfaces of the materials are matched through the dual effects of surface interception and internal deposition, so that the cigarette smoke can be effectively removed. The capability of intercepting and capturing tar and other harmful substances in main stream smoke of cigarettes is obviously improved. The smooth and regular surface brought by the smoothing treatment effectively inhibits great increase of draw resistance while adsorbing tar and other harmful substances, and realizes the balance of efficient adsorption and low draw resistance increase.

The present application belongs to the field of microbial application and feed processing technology, and discloses a bacillus subtilis, named bacillus subtilis YT1, which is preserved in China Center for Type Culture Collection, located at Wuhan University, No. 299, Bayi Road, Wuchang District, Wuhan City, Hubei Province, with a preservation number of CCTCC NO: M 20242767 and a preservation date of December 10, 2024. The present application also discloses a microbial preparation and the application of the bacillus subtilis or the microbial preparation in the processing of silage. The present application first simultaneously possesses high efficient lignocellulose degradation ability, excellent fermentation promotion characteristics, significant antioxidant activity and good probiotic characteristics in a strain of bacillus subtilis. This characteristic enables a single bacterial agent to achieve multiple goals such as fiber degradation, fermentation promotion, oxidation protection, which traditionally requires multiple compounded bacterial agents, and fundamentally overcomes the problems of poor compatibility between strains, unstable synergistic effect and high application cost of existing compounded additives.

The invention relates to the technical field of high polymer materials and additive manufacturing, in particular to a biodegradable 3D printing material and a preparation method thereof. The problem that an existing 3D printing material is difficult to degrade in the natural environment, and environmental pollution is caused is solved. The printing material is composed of a vegetable protein phase, polylactic acid, polybutylene terephthalate, biomass reinforced fibers, a degradation regulating agent and a functional auxiliary agent, the vegetable protein phase comprises soybean protein and corn protein, the biomass reinforced fibers are surface modified coffee grounds and microfibrillated cellulose, and the degradation regulating agent is a mixture of the soybean protein and the corn protein. The degradation regulating agent is formed by compounding beta-tricalcium phosphate and modified starch microspheres. The preparation method adopts a step-by-step master batch method and a melt blending process and comprises the following steps: firstly, pretreating raw materials, then preparing protein-polyester master batches and functional master batches, finally, mixing the master batches at a high speed, and carrying out melt blending extrusion granulation through twin-screw extrusion.

The invention provides efficient fiber degradation type prevotella and application thereof in promoting rumen fermentation, and relates to the technical field of microbiology, the prevotella is obtained by separating and purifying healthy Holstein cow rumen fluid, and is classified and named as Prevotella sp; the strain is preserved in Guangdong Microbial Culture Collection Center on June 20, 2025, and the preservation number is GDMCC66564; the prevotella SCX001 disclosed by the invention can efficiently degrade fibers in rumen fermentation liquor of the calves, and the strain can be used as a candidate probiotic for promoting intestinal health of ruminants such as dairy cows and the like; an in-vitro fermentation test verifies that the strain has a remarkable fiber degradation function, and a new thought and prospect are provided for applying the strain to the field of high-fiber feed to promote the growth of animals and maintain the body health of the animals in the future.

The present application provides a kind of animal feed with bamboo instead of grain.The feed includes 15%-22% of crude protein, 12%-18% of crude fiber, 0.5%-1.5% of bamboo leaf flavonoids, 0.03%-0.10% of gamma-aminobutyric acid, 2%-5% of lactic acid, the degradation rate of neutral detergent fiber is greater than or equal to 40%, and does not contain exogenous added antibiotics.The preparation method of the feed includes mechanical-thermal two-stage pretreatment, enzymolysis, solid two-stage fermentation, directional metabolic regulation, low-temperature drying and compounding.The present application significantly improves the degradation rate of bamboo fiber and the content of functional ingredients through mechanical-thermal synergistic pretreatment and directional metabolic regulation, and realizes the high-value utilization of bamboo processing residues.

The present invention provides a fully degradable plant fiber mold production line, which relates to the field of plant fiber degradation and includes side pieces, each of which is an L-shaped structure, each of which is provided with a movable groove inside, and a protective plate inserted into the inside of each movable groove, the protective plate being an L-shaped structure, each of which is provided with a pressing groove inside, the pressing groove being an inclined structure, and the two ends of the pressing groove being an arc-shaped structure. When pouring out the steamed food, the electric steaming pot presses the pressing block through the flip plate to move, driving the connecting plate and the movable rod to move downward, so that the two ends of the movable rod are simultaneously displaced inside the guide groove and the pressing groove. Since the pressing groove is an inclined structure, the protective plate is pushed outward, so that the protective plate is located on both sides of the container for protection, so that when liquid splashes out, it is blocked to avoid scalding the human body. This solves the problem of existing fully degradable plant fiber mold production lines in which liquid easily splashes out and scalds the human body when pouring out the steamed food in the electric steaming pot.

The invention relates to the technical field of modern breeding industry, and discloses a research method for degrading crude fibers by synergistically fermenting distillers' grains with artificial combined flora, which comprises the following steps: S1, activating single bacteria of the artificial combined flora; s2, preparing an artificial combined flora solution; s3, vinasse pretreatment and screening; s4, preparing a solid fermentation culture medium; s5, inoculation and solid fermentation; s6, monitoring the fermentation process; s7, measuring a product after fermentation; and S8, evaluating the in-vitro digestibility. The three strains are combined in proportion to form an artificial combined flora to cooperatively ferment the vinasse, so that the technical effects of efficiently degrading crude fibers in the vinasse in a targeted manner and cooperatively improving the activity of a key degrading enzyme so as to strengthen the overall degradation efficiency are achieved, and compared with the common technical scheme of single-strain fermentation or simple mixed flora fermentation without a specific proportion in the prior art, the technical scheme has the advantages that the cost is reduced, and the production efficiency is improved. The defects that the crude fiber degradation is not thorough, the enzyme activity secretion type is single, the synergy among strains is poor, and the anti-enzymolysis structure of the crude fiber in the vinasse is difficult to break through are overcome.

Disclosed is the use of an aqueous deicing / anti-icing composition for reducing carbon fibre degradation. Said composition comprises 40-60% by weight of at least one alkali metal carboxylate and 0.1-2.0% by weight of microfibrillated cellulose. The microfibrillated cellulose comprises at least one hydroxyalkyl cellulose. The balance to 100% by weight is achieved by water and said composition has a pH of 9-12. Disclosed is also a method for reducing carbon fibre degradation of an aqueous deicing / anti-icing composition in brakes. The method comprises applying the composition on an area selected from airfield runway, airfield taxiway, street, road, cycle way, footpath, sidewalk, bridge, backyard, parking area and sportsground. Disclosed is also the use of microfibrillated cellulose as a deicing / anti-icing composition additive for reducing carbon fibre degradation in airplane brakes.

The invention relates to the technical field of alginate fiber preparation, and discloses an alginate fiber and a preparation method thereof.The preparation method comprises the steps that chemical modification is conducted on a sodium alginate macromolecular chain, a side chain group which can be controllably hydrolyzed and can catalyze main chain breakage is introduced, meanwhile, a weak covalent bond sensitive to spinning shear force is introduced, and reducing agent microcapsules are dispersed in a spinning solution; according to the invention, the disassembly of the main chain of the fiber is bound with an internal chemical reaction endpoint which is not influenced by external environmental fluctuation, so that the transformation of the fiber degradation behavior from passive environmental response to active programmed structure disassembly is realized; and in combination with a self-repairing quality control mechanism in the spinning process, the high uniformity and predictability of the programmed degradation performance in a final product are ensured.