8 results about "Fiber degradation" patented technology

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 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.