15 results about "Fiber degradation" patented technology

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 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 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 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.

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 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 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.

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 utility model discloses a bamboo fiber degradation straw processing, putting and fixed-length cutting device, which belongs to the technical field of straw fixed-length cutting, and comprises a working plate, four supporting legs are arranged at the bottom of the working plate, a controller is arranged at the top of the working plate, a straw conveying mechanism is arranged at the top of the working plate, and the straw conveying mechanism is arranged at the bottom of the working plate. A straw is arranged on the straw conveying mechanism in a transmission mode, a cut-off mechanism, a fixed-length limiting mechanism and a material collecting plate are arranged on the top of the working plate, the material collecting plate is located between the cut-off mechanism and the fixed-length limiting mechanism, a slope groove is formed in the top of the material collecting plate, and a notch is formed in the bottom of the material collecting plate. A material collecting box is arranged in the notch and located below the inclined face groove in an inclined mode. According to the straw cutting device, the fixed-length cutting size of the straw can be automatically adjusted, the cut straw can be automatically collected, manual collection is avoided, and the working efficiency is improved.

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

The application relates to high-toughness strong-anti-crack PVA fiber modified high-strength machine-made sand concrete and belongs to the technical field of concrete. The application is prepared by self-preparing a grafting modifier, modifying PVA fibers by the grafting modifier to obtain modified PVA fibers and preparing concrete. The phosphoric acid monoester group and the sulfonic acid group of the grafting modifier can form a coordination bond and an ionic bond with calcium ions of a cement matrix, an amide bond can form a hydrogen bond with cement hydration products, a strong bonding interface is constructed, the strong hydrophilic group can improve the hydrophilicity of the PVA fibers, improve dispersibility, optimize the wrapping effect of cement on the fibers, and further significantly enhance the mechanical properties of the concrete. The bridging effect of the modified fibers can inhibit early and later cracks of the concrete. The siloxane film formed by the silane group, the calcium salt interface and the stable effect of the sulfonic acid group improve the alkali resistance and corrosion resistance of the fibers, reduce fiber degradation, prolong the service life of the concrete structure, and improve the compactness and impermeability of the concrete structure.