22 results about "Protein digestibility" patented technology

The application discloses a feed oil and meat and bone meal co-production preparation process for improving protein retention rate, and relates to the field of animal feed.The preparation process comprises the following steps: S1, after crushing livestock and poultry slaughter by-products, water, lactic acid and sodium sulfite are added, and stirring treatment is conducted to obtain pretreated materials; S2, composite strain seed liquid is inoculated into the pretreated materials, and fermentation is conducted; S3, the fermented materials are heated, enzyme inactivation and sterilization treatment are conducted, and three-phase centrifugal separation is conducted to obtain upper oil, middle layer fermentation protein liquid and lower layer very fine bone residue; S4, the upper oil is subjected to water washing and vacuum dewatering to obtain feed oil; and the middle layer fermentation protein liquid and the lower layer very fine bone residue are combined and then subjected to low-temperature vacuum drying to obtain meat and bone meal.The process can effectively improve protein digestibility and protein retention rate, does not need high-temperature and high-pressure treatment, effectively retains heat-sensitive amino acids, and the product is rich in small-molecule peptides and soluble calcium and has excellent quality.

The invention discloses a deep processing method of wheat protein and application of the wheat protein in feed, and belongs to the technical field of deep processing of wheat protein and feed additive.The deep processing method comprises the steps that disulfide bonds are broken through sulfite under the alkalescent condition, so that the protein structure is loosened, then reducing sugar is added, the pH value is adjusted back to be nearly neutral, and the wheat protein is obtained through two-stage temperature-control and humidity-control dry heat treatment; maillard grafting modification and flavor generation are synchronously realized. The whole process does not need an enzyme preparation and is simple in process route; the water-soluble protein content of the obtained product is remarkably improved, the product can equivalently replace fish meal in a broiler chicken test, and the daily gain and the protein digestibility are remarkably improved; the process is simple to operate, low in cost and easy to industrially popularize, and a brand new path is provided for high-value utilization of the wheat protein.

The invention discloses a fermented sausage and a preparation method thereof, and belongs to the technical field of meat product processing. The fermented sausage is prepared from the following raw materials in terms of 100kg of finished product: a compound protein matrix, a functional additive and a compound fermentation strain. The preparation method comprises the steps of raw material pretreatment, ultrasonic-assisted vacuum pickling, strain inoculation and sausage filling, staged temperature-controlled fermentation and ultrahigh-pressure sterilization and packaging. The protein digestibility is improved through a compound protein matrix, chemical preservative-free preservation is realized by virtue of rosemary polyphenol and fructo-oligosaccharide, the texture and flavor of the product are synergistically optimized through staged fermentation and ultrahigh-pressure sterilization, and meanwhile, the pickling time is greatly shortened; the problems of unbalanced nutrition and taste, contradiction between safety and flavor and low process efficiency of traditional fermented sausages are solved, and the product meets the requirements of healthy foods.

The invention provides a protein raw material pretreatment method and application, and belongs to the technical field of protein raw material treatment.The protein raw material pretreatment method comprises the steps that a high-fiber protein raw material is prepared and subjected to pulsed electric field PEF treatment, stirring or circulation is conducted in the treatment process to guarantee the treatment uniformity, and after electroporation is generated, the protein raw material subjected to PEF treatment is obtained; the method comprises the following steps: performing PEF treatment on a protein raw material, adjusting the solid-liquid ratio of the protein raw material subjected to PEF treatment, sequentially performing sequential gradient enzymolysis, controlling the peptide chain length by monitoring the enzymolysis degree to obtain a protein hydrolysate with a specific peptide chain length, performing amyloid fibril treatment on the protein hydrolysate, and performing low-temperature drying on the treated product to finally obtain the functional protein raw material. According to the method, the pretreatment uniformity and the enzymolysis efficiency of the protein raw materials can be improved, the peptide chain length is accurately controlled, the protein digestibility is improved, the anti-nutritional factor content is reduced, and the functional protein raw materials suitable for livestock and poultry and aquatic feed production are produced.

The invention discloses application of pediococcus acidilactici NR combined with a compound enzyme preparation in preparation of a wheat bran fermentation agent and a fermentation method of the pediococcus acidilactici NR combined with the compound enzyme preparation, and belongs to the fields of fermentation engineering and feed processing. The invention provides a method for improving the protein content and the protein digestibility of fermented wheat bran through synergistic fermentation of pediococcus acidilactici and a compound enzyme preparation. The acid soluble protein content and the in-vitro protein digestibility of the wheat bran are remarkably improved through a fermentation technology. In an actual animal feeding test, the fermented wheat bran shows an excellent feed replacement effect, and can partially replace corn and soybean meal, so that the feed digestibility is remarkably improved, and the feed cost is reduced. The invention provides a new way for high-value utilization of wheat bran, and has wide application prospect and important economic significance.

This invention discloses an animal feed based on the synergistic enzymatic hydrolysis of cottonseed meal and rapeseed meal, and its feeding equipment, relating to the field of animal feed technology. It comprises the following raw materials in parts by weight: 25-30 parts cottonseed meal, 20-25 parts rapeseed meal, 35-40 parts corn flour, 3-5 parts wheat bran, 0.18-0.26 parts compound enzyme preparation, 2.8-4.5 parts nutritional supplement, and 0.4-0.7 parts functional additive. This invention utilizes multi-enzyme synergistic hydrolysis to degrade protein into easily absorbed small peptides, improving crude protein digestibility. Combined with the complementary and precise supplementation of amino acids from the two meal products, feed conversion efficiency is significantly optimized. Through detoxification enhancement and the synergistic effect of adsorbents, the residual levels of anti-nutritional factors are significantly reduced compared to the unoptimized group, greatly improving feeding safety.

The invention discloses high-protein coarse cereal nutritional meal replacement powder and a preparation method thereof, and relates to the field of food processing, the high-protein coarse cereal nutritional meal replacement powder comprises a continuous gel matrix phase formed through mineralization crosslinking and an adsorption slow-release phase dispersed in the continuous gel matrix phase; the continuous gel matrix phase is formed by reacting pea protein, enzymolysis oat beta-glucan and a compound mineralizing agent; the adsorption slow-release phase is composed of porous starch loaded with hydrolyzed whey protein peptide and flavor substances; the composite mineralizer comprises calcium salt and magnesium salt; according to the nutritional meal replacement powder, a three-dimensional gel network with a loose structure and strong hydrophilicity is formed through a coupling technology of constructing a continuous gel matrix phase through mineralization cross-linking and forming a dispersed slow-release phase through porous adsorption, disordered hydrophobic aggregation of protein and fibers is efficiently prevented, hydration reconstruction can be rapidly performed during brewing, and in the digestion process, the nutritional meal replacement powder has the advantages that the dissolution rate is high; the loose gel network provides a smooth permeation path for digestive enzymes, and the protein digestibility is high.

This invention discloses a method and apparatus for evaluating the digestibility of compressed dry food. The method includes: using an in vitro dynamic human gastrointestinal digestive system to simulate the digestion of compressed dry food and standard food, respectively, to obtain corresponding digestive juices; measuring the protein content sequence, amino acid content sequence, apparent viscosity value sequence, and protein digestibility sequence of the digestive juices corresponding to the compressed dry food and the standard food, respectively; and performing quantitative evaluation of the digestibility of the digestive juices corresponding to the compressed dry food and the standard food to obtain the digestibility evaluation value of the compressed dry food.

This application relates to the field of dairy processing technology, specifically disclosing a composite DHA milk protein peptide, its preparation method, and its application. The process involves homogenizing DHA algal oil with an emulsifier under high pressure to prepare a nano-sized DHA emulsion (particle size 100-300 nm), achieving efficient encapsulation and stabilization protection of DHA. The resulting DHA emulsion is then mixed with skim milk, and targeted enzymatic hydrolysis with trypsin and flavor protease at 45-55℃ and pH 6.5-7.0 for 2-4 hours hydrolyzes the milk protein into small molecule peptides. After enzyme inactivation and drying, the composite DHA milk protein peptide is obtained. This process significantly improves protein digestibility while protecting DHA stability; in vitro simulated digestion experiments show a digestibility and absorption rate of over 94.8%. Further application of this protein peptide in the preparation of liquid milk yields a DHA retention rate of over 92%, and even after 6 months of storage at room temperature, there is no obvious oxidized fishy odor. This effectively solves the technical problems of DHA's easy oxidation and poor stability in dairy products, demonstrating good nutritional synergistic value and promising industrial application prospects.

The invention relates to the technical field of feed biology, and discloses a straw protein feed based on fungal fermentation and a preparation method thereof. The feed is prepared by taking a modified straw substrate as a main raw material, performing structure modification on natural straw to improve accessibility of cellulose, introducing an organic small molecule metabolism inducer into a fungus fermentation system, matching a nitrogen source, mineral substances and a fermentation regulation and control aid, and performing fermentation under controlled conditions. The small organic molecule metabolism inducer does not serve as a main carbon source in the fermentation process, but can regulate and control nitrogen metabolism and protein synthesis pathways of fungi and promote efficient conversion from a nitrogen source to microbial protein. Compared with the prior art, the method has the advantages that the crude protein content, the protein digestibility and the nitrogen source utilization efficiency of the straw fermented feed can be remarkably improved, high-value utilization of agricultural straw is realized, and the method is suitable for industrial popularization and application of feed.

The invention relates to the technical field of microbial fermentation and feed production, in particular to a free gossypol degrading bacterium YJQ-1 and application thereof.The free gossypol degrading bacterium YJQ-1 is Wickerhamomyces anomalus, is preserved in the China Center for Type Culture Collection on March 4, 2026, has the preservation number of CCTCC M 2026367 and is separated from Sichuan Dazhou sweet distiller's yeast. The strain can tolerate 2.0 g / L of gossypol acetate, and the degradation rate of 1.0 g / L of gossypol acetate within 72 h reaches 83.75%. The microbial inoculum prepared from the strain is inoculated to cottonseed meal sieved by a 40-mesh sieve according to the inoculum size of 5%, the moisture content is adjusted to 40%, solid state fermentation is performed at 30 DEG C for 7 days, the gossypol degradation rate is 86.52%, the free gossypol is only 144 mg / Kg, and nutritional indexes such as cottonseed meal crude protein and protein digestibility are remarkably improved. The technology is low-carbon and environment-friendly, the application range of the cottonseed meal is widened, and a foundation is laid for biological manufacturing of oil processing byproduct protein resources.

The invention relates to the technical field of feed, in particular to a compound feed additive for improving intramuscular fat deposition of beef cattle and a preparation method of the compound feed additive. The compound feed additive for improving intramuscular fat deposition of beef cattle is characterized by consisting of the following raw materials in parts by weight: 14-26 parts of coated amino acid, 2-8 parts of complex cellulose lytic enzyme, 2-6 parts of slow-release urea, 30-60 parts of rumen bypass protein or fermented rumen bypass protein and 18-32 parts of corn flour, the coated amino acid is obtained by coating amino acid with zein water. When the prepared compound feed additive for improving intramuscular fat deposition of beef cattle is added into daily ration, the growth of cattle can be effectively promoted, the protein digestibility is improved, and the marbling grade of beef and the intramuscular fat content of longissimus dorsi muscle are improved.

The invention relates to the technical field of food processing, in particular to a preparation method of fermented oat flour with high digestibility, and the fermented oat flour is combined with kluyveromyces marxianus fermentation through double enzymolysis, so that the protein digestibility is improved. According to the method disclosed by the invention, a high-integration-degree continuous process path of front-end enzymolysis, two-stage fermentation at different temperatures and rear-end drying is realized through a strategy of separating enzymatic hydrolysate into supernate and precipitate and respectively applying the supernate and the precipitate to yeast propagation and secondary fermentation of thalli.

The application discloses a kind of rich in wheat oligopeptide compressed dry food digestion performance evaluation method and device, the method comprises: using in vitro dynamic human gastrointestinal digestion system, not containing wheat oligopeptide compressed dry food and rich in wheat oligopeptide compressed dry food are respectively simulated digestion processing, respectively measured to obtain first measurement index set and second measurement index set;Each type of measurement index set, including gastric emptying curve, protein digestion rate sequence, amino acid composition value sequence, fat bioavailability sequence;The gastric emptying curve includes several discrete points;The first measurement index set and second measurement index set are preprocessed, and obtain preprocessed index information set;The preprocessed index information set is evaluated and processed, and obtains the digestion performance evaluation value of rich in wheat oligopeptide compressed dry food.

Formaldehyde is a common component of antimicrobial compositions for preserving animal feeds. However, the use of formaldehyde is coming under pressure and alternative antimicrobial compositions are needed. The present application discloses methods and / or uses of a formaldehyde-free antimicrobial composition comprising formic acid and propionic acid in the making of rendered animal protein compositions or in the inhibiting of the development of Salmonella bacteria in animal by-product compositions (e.g., rendered animal proteins) while maintaining higher protein digestibility comparing with formaldehyde.

The invention relates to the technical field of feeds, in particular to a compound feed for improving intestinal health of piglets and a feeding method of the piglets. The compound feed for improving the intestinal health of the piglets consists of corn flour, whey powder, a core functional component, a premix, other trace components and a carrier, the core functional component comprises a digestible fermentation product, functional oligosaccharide and a sterol compound. The digestible leavening is prepared by performing enzymolysis on soybean meal and wheat bran through compound protease and then inoculating zymophyte for fermentation. The invention further provides a staged feeding method matched with the feed. The staged feeding method comprises pasty feeding and gradual feed adding in the weaning transition period. Through an enzymolysis and fermentation synergistic process and compounding of core components, deep pre-digestion of the feed is realized, the protein digestibility and the feed conversion rate can be remarkably improved, the emission of ammoniacal nitrogen in intestinal tracts is effectively reduced, and the intestinal health and growth performance of piglets in the weaning period are improved.

The application discloses a kind of compressed dry food digestion performance prediction method and device, the method comprises: the component information set of compressed dry food is obtained by acquisition;The component information set includes protein content information, mineral content information, starch content information and fat content information;The preset digestion performance prediction model is trained and handled, and the digestion performance prediction model that training is completed is obtained;Using the digestion performance prediction model that training is completed, the component information set of compressed dry food obtained by acquisition is fused and predicted and handled, and the digestion performance prediction information set is obtained;The digestion performance prediction information set includes protein content prediction value, amino acid content prediction value, apparent viscosity prediction value, protein digestion rate prediction value.

The application discloses a yeast protein and citrus fiber functional assembly based on a high-pressure homogenization process and a preparation method thereof, and belongs to the field of novel functional feed.The yeast protein and the citrus fiber are subjected to high-pressure homogenization treatment in a liquid phase, so that the small particles of the yeast protein are uniformly adsorbed on the porous structure of the citrus fiber, and when the cumulative particle size distribution number of the self-assembly reaches 90%, the particle size (D90) is less than 500 nm, which is in the submicron level. Subsequently, the biological activity is maximally retained through freeze-drying, and finally, the final product is obtained through high-speed mixing and granulation. Compared with a traditional physical mixture, the assembly prepared by the method has higher protein digestion rate and anti-inflammatory activity, can effectively replace a traditional feed protein source in a specific proportion, and significantly improves the intestinal health of a colonitis model animal. The application realizes dual innovation of a preparation process and application function, and has extremely high industrial application value.

The invention provides a biological processing method of lard stearin and application thereof, the biological processing method of lard stearin comprises the following steps: S1, mixing lard stearin powder with absolute ethyl alcohol, standing, carrying out suction filtration, and drying to obtain degreased lard stearin; s2, mixing the degreased lard stearin with a compound enzyme preparation, and performing enzymolysis and enzyme deactivation to obtain lard stearin enzymatic hydrolysate; wherein the compound enzyme preparation comprises alkaline protease and lipase; and S3, carrying out solid-liquid separation on the lard stearin enzymatic hydrolysate, and drying to obtain the enzymatic lard stearin. The feed additive can reduce the fat content in the lard stearin, improve the protein digestibility of the lard stearin and the feed utilization rate, and can improve the growth performance of broilers and improve the breeding benefits when being applied to broiler feed.

The main components of the pet food comprise animal-derived protein, plant-derived protein, an intestine-protecting plant extract, functional fat and nutrients, carbohydrates, a compound vitamin mineral premix and auxiliary materials, superfine grinding, a coating technology and a low-temperature technology are combined, and the intestinal-protecting and stomach-regulating pet food is prepared. The survival rate of clostridium butyricum is increased by 40% or above compared with that of a traditional process, the heat-sensitive component retention rate is 80%, the plant extract and the functional nutrients have a synergistic effect, the expression of tight junction protein in the intestinal tract of a pet can be improved, the barrier function of the intestinal tract is enhanced, the inflammatory reaction of the intestinal tract is reduced, and feeding tests verify that the soft excrement rate of dogs in a test group is reduced by 65%; the content of serum immunoglobulin IgA is increased by 32%, the palatability of pets is increased by 20% due to the optimized protein-fat ratio and the natural phagostimulant, and the digestibility of protein is further increased due to the addition of medium-chain fatty acid and glutamine.

The application provides a preparation method of a supercritical bird's nest product, comprising the following steps: using a segmented advanced supercritical fluid technology, taking supercritical carbon dioxide as a drying medium, replacing water in the soaked bird's nest, and preparing a supercritical bird's nest. Carbon dioxide is used as a drying medium, and in a supercritical state, water molecules are directly replaced and dried by directly acting on pure bird's nest raw materials. The whole process does not need to add any auxiliary components, is safe, controllable and healthy; the segmented advanced molecular replacement is beneficial to the more relaxed bird's nest protein structure, the formation of a nano-porous structure in the bird's nest tissue, the removal of part of calcium and magnesium ions in the bird's nest, the improvement of the solubility of bird's nest protein, and the increase of the swelling multiple of the bird's nest after soaking. The bird's nest product prepared by the technology has higher protein digestibility, better conversion ability of sialic acid in the body, better utilization efficiency in blood plasma, high absorption rate and better nutrient utilization rate.