71results about "Food adsorption" patented technology

The application discloses a kind of metal-loaded starch aerogel and its preparation method and application, comprising the following steps: (1) starch and water are prepared into starch milk, starch milk is heated, and gelatinized starch solution is obtained;(2) sodium laurate is added to the gelatinized starch solution and heated to react, and after the reaction is completed, starch-sodium laurate complex solution is obtained;(3) metal nitrate solution is added to the above-mentioned complex solution, and after stirring uniformly, a reducing agent is added to reduce metal ions, and metal-loaded starch hydrogel is obtained;(4) the above-mentioned hydrogel is pre-frozen and freeze-dried to obtain metal-loaded starch aerogel.The metal-loaded starch aerogel of the application has excellent ethylene adsorption capacity, with an adsorption capacity of about 32 mL / g, good adsorption stability, and the adsorption process can be carried out at normal temperature and pressure, which can be used for fruit preservation.

The invention relates to the technical field of feed production, in particular to an azolla filliculoidas fresh leaf fermented feed which comprises the following components in parts by weight: 70 parts of azolla filliculoidas silage sections, 20 parts of a composite carrier matrix, 5 parts of a natural anti-caking and toxin adsorbent, 7 parts of functional liquid, 10 parts of an energy and flavor synergist and 2 parts of zymophyte. Functional liquid is converted into chitosan oligosaccharide through ultrasonic treatment, and long-chain chitosan is broken into high-solubility chitosan oligosaccharide; through cold plasma activation, an active functional group is grafted on the surface of a chitosan oligosaccharide molecule to form a nanoscale compact protective film; the protective film can inhibit pollution of aerobic mould and saccharomycetes after unsealing, prolong the shelf life of the feed, reduce loss of volatile fatty acids and flavor substances generated by fermentation, and maintain the nutritional value and palatability of the feed.

The invention discloses a gastrodia elata fermented beverage and a preparation method thereof, and belongs to the technical field of food processing, the gastrodia elata fermented beverage is mainly prepared from drinking water, gastrodia elata juice, white granulated sugar and honey, and lactobacillus plantarum is adopted for fermentation. The preparation method comprises the following steps: quickly freezing the gastrodia elata, unfreezing by microwaves, and extracting the original juice to obtain the gastrodia elata juice; preparing slow-sugar gel from white granulated sugar, corn starch, konjac glucomannan, beta-cyclodextrin and citric acid; the preparation method comprises the following steps: uniformly mixing and stirring drinking water, gastrodia elata juice, slow-sugar gel and honey, grinding, homogenizing, bottling, sterilizing, cooling to a proper temperature, inoculating lactobacillus plantarum, and finally performing constant-temperature fermentation to obtain the gastrodia elata fermented beverage. The gastrodia elata fermented beverage is stable in fermentation effect, the obtained gastrodia elata fermented beverage is better in flavor and high in nutrient content and has a very good health-care function, and a new way is provided for deep processing of gastrodia elata and development of high-added-value products.

The invention discloses a walnut kernel skin active component enrichment method based on differential pressure blasting puffing and gradient biotransformation, and relates to the technical field of agricultural product deep processing and plant active component extraction, and the method comprises the following steps: S1, carrying out differential pressure blasting puffing treatment on dried walnut kernel skin, maintaining the pressure of the material at 0.8-1.5 MPa for 10-60 seconds, and then instantaneously releasing the pressure to normal pressure within 0.05-0.2 seconds, the porosity is increased, cell walls are broken, and the specific surface area is increased; s2, mixing the puffed walnut kernel skin and water according to a solid-liquid mass ratio of 1: 10-1: 30 to form slurry, adding a compound enzyme system containing cellulase, hemicellulase, pectinase, tannase and / or protease, and performing enzymolysis for 1-4 hours under the conditions that the temperature is 45-55 DEG C and the pH is 4.5-6.0, so that cell wall components are partially hydrolyzed and bound phenols are released; and S3, sequentially carrying out first-stage fermentation and second-stage fermentation on the materials subjected to enzymolysis.

A method for debitterizing wheat protein peptide residue (WPPR) includes steps S1-S5. S1, the wheat protein peptide residue are taken to crush, and then deionized water are added into the crushed WPPR to obtain the peptide residue solution; S2, debitterizing modified solution is added to the peptide residue solution (PRS), and the PRS is filtered to obtain a preliminarily modified peptide residue solution (PMPRS); S3, modified flavor protease is added to the PMPRS, stirred and heated in a water bath to obtain a debitterized peptide residue (DPR) solution; S4, a supernatant of the debitterized peptide residue solution is removed to obtain a remaining solution, and the remaining solution is poured into a centrifuge tube to centrifugate to obtain a peptide residue precipitate; and S5, supercritical carbon dioxide extraction is performed on the peptide residue precipitate, and freeze-dried to obtain a final debitterized peptide residue product.

The invention provides a preparation method and application of high-palatability carrot dietary fibers. The method comprises the following steps: (1) washing and dicing carrots; (2) cellulase and saccharifying enzyme enzymolysis; (3) constructing a two-phase system, adding a compound enzyme and pectinase, and carrying out gradient enzymolysis; (4) carrying out enzyme deactivation and centrifugation to obtain a water phase; (5) performing gradient centrifugation to obtain mixed fibers; (6) precipitating, and collecting precipitated fibers; (7) adding carrot source nano cellulose to obtain a composite fiber with a core-shell structure; and (8) drying, crushing and sieving. According to the preparation method disclosed by the invention, the core problems of rough taste (large particle size), astringent taste (residual acetyl groups and terpene substances), weak function and low purity in the traditional carrot dietary fiber preparation process are solved through a water-alcohol two-phase gradient composite enzymolysis and nano cellulose composite purification process; and finally, the high-palatability carrot dietary fiber which is fine, smooth, free of rough feeling, natural, fresh and sweet, high in purity and strong in function is prepared.

The invention discloses a separation process of a pancreatic lipase inhibitor Lycrutheophylpropanoid H with a new structure in red Chinese wolfberry fruits and application of the pancreatic lipase inhibitor Lycrutheophylpropanoid H with the new structure in the red Chinese wolfberry fruits. The specific preparation process comprises the following seven steps: extraction, on-line pancreatic lipase inhibitor component recognition, hydrophilic water pressure preparation column coarse separation, reversed-phase high-pressure preparation column preparation, hydrophilic high-pressure preparation column preparation, gel filtration chromatography and in-vitro pancreatic lipase inhibition experiment. The method is low in cost, and the product purity is greater than 95%; the technical means adopted by the invention can be used for large-scale production: the raw material requirement is not high, the cost is low, and batch material preparation is easy; in the preparation process, solvents and separation materials used by an extraction solvent, a hydrophilic preparative column, a reversed-phase preparative column, gel chromatography and a reversed-phase chromatographic column can be recycled.

The invention discloses a separation process of an alpha-glucosidase inhibitor Lycbarbarspermides Q with a new structure in red Chinese wolfberry fruits and application of the alpha-glucosidase inhibitor Lycbarbarspermides Q with the new structure in the red Chinese wolfberry fruits. The specific preparation process comprises the following seven steps: extraction, on-line alpha-glucosidase inhibitor component identification, hydrophilic water pressure preparation column coarse separation, reversed-phase high-pressure preparation column preparation, hydrophilic high-pressure preparation column preparation, gel filtration chromatography and in-vitro alpha-glucosidase inhibition experiment. The method is low in cost, and the product purity is greater than 95%; the technical means adopted by the invention can be used for large-scale production: the raw material requirement is not high, the cost is low, and batch material preparation is easy; in the preparation process, solvents and separation materials used by an extraction solvent, a hydrophilic preparative column, a reversed-phase preparative column, gel chromatography and a reversed-phase chromatographic column can be recycled.

The invention provides phycocyanin-containing low-sodium salt and a preparation method thereof, and relates to the field of low-sodium salt. The preparation method of the phycocyanin-containing low-sodium salt comprises the following steps: pretreatment, preparation of a composite seed crystal dispersion liquid, and blending crystallization. According to the preparation method of the low-sodium salt containing phycocyanin, the phycocyanin and the low-sodium salt can be effectively combined, and the problem that the phycocyanin is easy to lose efficacy in the preparation of the low-sodium salt due to poor stability is effectively avoided; meanwhile, the problems that in the crystallization preparation process of the low-sodium salt, phycocyanin cannot be effectively and uniformly combined with the low-sodium salt crystals formed by growth, and the growth of the normal crystallization crystals of the low-sodium salt is influenced are further avoided.

The application relates to the technical field of mold removers, in particular to a preparation method of a composite mold remover and the composite mold remover. The preparation method of the composite mold remover comprises the following steps: S1. preparing modified montmorillonite; S2. culturing Brevibacillus parvus in a culture medium, obtaining Brevibacillus parvus bacterial liquid after the culturing is completed, and then preparing the obtained bacterial liquid into dry powder; S3. mixing methyl mercaptoacetate, dimethyl trisulfide and 3-methyl butyl sulfide S-methyl ester with water, and then adding the dry powder to obtain a mixed solution; S4. mixing the mixed solution with the modified montmorillonite to obtain a composite mold remover preparation; and S5. drying and packaging the composite mold remover. The composite mold remover obtained by the application is applied to moldy feed, and excellent mold removal effect can be achieved after 24 hours of mold removal treatment.

The invention provides a flaxseed meal dietary fiber preparation method and application thereof.The flaxseed meal dietary fiber preparation method comprises the following steps that firstly, flaxseed meal pulp is subjected to high-power pulse microwave pretreatment, after vacuum drying, bacillus subtilis K6 is inoculated for solid-state fermentation, then double enzymolysis is conducted through amylase and protease, and the flaxseed meal dietary fiber is obtained; soluble dietary fibers and insoluble dietary fibers are extracted, the insoluble dietary fibers are subjected to compound modification through rutin and betaine, and the soluble dietary fibers are extracted through adsorption and purification of composite surface imprinted microspheres. The method obviously improves the yield and purity of the soluble dietary fibers in the flaxseed meal, the activity function of the insoluble dietary fibers is obviously enhanced after the insoluble dietary fibers are subjected to composite modification, and the flaxseed meal can be used for developing functional food or health care products. The method disclosed by the invention is green, environment-friendly, stable in process and suitable for large-scale production, and the comprehensive utilization value of the flaxseed meal is effectively improved.

The invention relates to the related technical field of solid beverages, in particular to a multifunctional blueberry solid beverage and a preparation method thereof.The preparation method comprises the steps that fruits are cleaned and then smashed, and acid water is added for soaking; the high-voltage electric field extraction device is used for extraction, and then coarse filtration is carried out to remove large impurities. Micro-filtration: further removing tiny impurities through an inorganic ceramic micro-filtration membrane to ensure the purity of the extracting solution. And reverse osmosis membrane separation: separating and concentrating the extracting solution through a reverse osmosis membrane device, adsorbing the concentrated extracting solution by using resin, performing gradient elution by using an ethanol solution, and collecting. Separating and concentrating the collected eluent again to obtain an extract, and then performing spray drying to convert the extract into the powdery blueberry extract. And finally, packaging the dried blueberry solid beverage, performing sterilization operation, and then performing drying treatment so as to ensure the sanitary quality and safety of the product, thereby obtaining the blueberry solid beverage.

A new gypenoside based on gypenoside and its preparation and application, namely (4ζ)-α-terpineol 8-O-[β-D-xylopyranosyl-(1→6)-β-D-glucopyranoside], the molecular formula is C 21 H 36 O 10 , the structural formula is as follows: the application is obtained by extraction, purification and separation from gypenoside, has the activity of reducing lipid and reducing cholesterol, has the purpose of being prepared into lipid-lowering and cholesterol-lowering drugs, meanwhile, the application is simple in operation and high in feasibility, the prepared compound is high in purity, and has the prospect of industrial application.

The invention discloses lung-moistening snow pear paste containing radix astragali and rhizoma atractylodis macrocephalae and a preparation method of the lung-moistening snow pear paste, and belongs to the technical field of health care product processing. Aiming at the component characteristics of astragalus membranaceus, atractylodes macrocephala koidz and divaricate saposhnikovia root, three targeted extraction modes of ultrasonic, microwave and reflux are respectively adopted, and macroporous adsorption resin purification is combined, so that the effective components of astragalus polysaccharide, atractylenolide and divaricate saposhnikovia root are reserved to the maximum extent, and the extraction rate is obviously improved compared with that of a traditional water boiling method; the core matrix is subjected to high-pressure homogenization and particle refining, and the traditional Chinese medicine effective components and the matrix are subjected to ultrasonic emulsification to realize molecular-level fusion, so that the problems of poor compatibility and easy layering of the traditional Chinese medicine components and the matrix in the traditional process are solved, the pasty fluid fineness is improved, and the pasty fluid tastes smooth and has no granular sensation; through cooperative use of the stabilizer and then vacuum low-temperature concentration, damage to heat-sensitive components is avoided, and the storage time of the product is prolonged.

The present application relates to the technical field of plant extract beverage preparation, in particular to a preparation process and device for a plant extract beverage, the preparation process comprising the following steps: selecting, removing impurities, removing dust and crushing one of tea, American ginseng, dendrobium, astragalus, wolfberry fruit, cistanche, angelica and polygonatum; adding water until the mixture is soaked through to obtain a material-water mixture; extracting the material-water mixture with three times of ethanol of a specified concentration; combining the three times of extraction liquid and conveying the combined extraction liquid into a reduced-pressure concentration tank for reduced-pressure concentration treatment, then eluting the extraction liquid with a macroporous adsorption resin column to obtain a traditional Chinese medicine extract, drying the traditional Chinese medicine extract, mixing the dried traditional Chinese medicine extract with resistant dextrin, stevioside, citric acid, vitamins, beta-cyclodextrin and other auxiliary materials in a mixing machine, sterilizing the mixture, and packaging the sterilized mixture to obtain the plant extract beverage; and the preparation device comprises an extraction device, a reduced-pressure concentration tank, a conveying control device and an adsorption and washing device. The present application adopts an ethanol gradient extraction method to comprehensively extract active ingredients in medicinal materials, and the prepared plant extract beverage is convenient to store, carry and drink.

The invention belongs to the technical field of food hazard reduction, and discloses a magnetic zearalenone adsorbent and a preparation method thereof. The preparation method comprises the following steps: ultrasonically mixing chitosan, a nitrogen source, ferrous chloride, fatty acid and water to obtain a mixture; reacting the mixture under high-temperature and high-pressure conditions, cooling and centrifuging to obtain a precipitate; carrying out repeated freezing and thawing treatment on the precipitate, and after the freezing and thawing treatment is finished, carrying out freeze drying to obtain a freeze-dried substance; and sequentially firing, grinding and sieving the freeze-dried substance to obtain the magnetic zearalenone adsorbent. The magnetic zearalenone adsorbent disclosed by the invention can be used for efficiently and safely reducing zearalenone.

The invention discloses an extraction process and application of a purslane extract. The process comprises the following steps: raw material pretreatment, microwave-ultrasonic wave synergistic extraction, compound enzyme enzymolysis, microbial fermentation, solid-liquid separation, macroporous resin purification, concentration and drying. Through the four-stage synergistic effect of physical crushing, biodegradation, biotransformation and fine purification, efficient release, transformation and enrichment of active ingredients of purslane are realized under mild conditions.

The invention belongs to a biological deiodination technology, and provides a method for removing iodine in macroalgae and application. The chlamydomonas reinhardtii has an adsorption effect on iodine-containing substances and can be used for biological deiodination of macroalgae. Specifically, the invention provides a biological adsorption deiodination technology for removing iodine contained in edible macroalgae such as sargassum fusiforme, kelp, undaria pinnatifida and porphyra haitanensis through incubation treatment by using chlamydomonas reinhardtii in water, and a specific incubation treatment process is optimized, so that a relatively high deiodination effect is achieved.

The invention relates to the technical field of feed additives, in particular to a feed additive for improving egg shell quality of laying hens and a preparation method thereof. The feed additive for improving the egg shell quality of the laying hens is prepared from the following components in parts by weight: 2 to 4 parts of taurine, 3 to 5 parts of radix angelicae sinensis, 3 to 5 parts of herba leonuri, 1 to 3 parts of iron glycinate, 2 to 3 parts of manganese glycinate, 0.5 to 1 part of zinc methionine, 0.1 to 0.4 part of selenium yeast, 0.1 to 0.2 part of 25-hydroxyD3, 3 to 5 parts of bile acid, 2 to 5 parts of enterococcus faecium, 1 to 2 parts of yeast cell wall polysaccharide, 2 parts of compound enzyme and 20 to 30 parts of montmorillonite. 40-50 parts of stone powder, 1 part of ethoxyquin and 10 parts of rice husk powder.

The present application belongs to the technical field of heavy metal pollution removal, and relates to application of propolis and / or propolis extract in reducing bioavailability and / or toxicity of heavy metals in food. The present application develops a product containing propolis and / or propolis extract for reducing bioavailability and toxicity of lead in food. The propolis and / or propolis extract not only can supplement nutritional elements without side effects, but also has good effect in reducing toxicity, and has wider application prospect compared with traditional chemical heavy metal chelating agents. The propolis and / or propolis extract can reduce bioavailability and / or toxicity of heavy metals in food, and reduce potential health risks of heavy metals to human body. The present application has important significance for reducing and preventing heavy metal hazards of agricultural products.

The present invention relates to a sturgeon crisp chip processing method, which uses sturgeon slices as basic raw materials, and is characterized in that the raw materials comprise, by weight, 100 parts of sturgeon slices, 3 parts of ginger powder, 7 parts of cooking wine, 1 part of edible salt, 0.1-0.9 part of soybean polysaccharide, and 1-12 parts of white granulated sugar. The processing method comprises the following steps: unfreezing sturgeon at normal temperature for a moment, cutting the unfrozen sturgeon into slices with the thickness of about 1mm, and absorbing moisture on the surface of the fish by using a tissue; 3% of ginger powder, 1% of table salt, 7% of cooking wine and a certain amount of soybean polysaccharide are taken and blended into a composite fishy smell removing solution, 100 parts of the sturgeon slices are soaked into the composite fishy smell removing solution through a wet pickling method to be pickled for 30 min, then the surfaces of the sturgeon slices are evenly smeared with white granulated sugar, standing is conducted for 10 min, and baking is conducted for 20-100 min at the temperature of 75-135 DEG C. The obtained sturgeon crisp chips are good in chewiness and crispness, smooth in appearance, less in damage and small in curling degree; the fish is brownish red in color, uniform, consistent, glossy, obvious in fish flavor, free of fishy smell and good in overall taste and flavor.

The invention discloses a mould inhibitor used in a raisin processing process, and belongs to the field of food processing. The mold inhibitor comprises the following components in percentage by mass: 15%-25% of walnut green seedcase polyphenol, 5%-10% of chlorophyll, 2%-5% of calcium chloride, 1%-3% of vitamin E, 10%-20% of tea polyphenol and the balance of chitosan. The mould inhibitor can effectively inhibit growth of mould on the surface of grapes and reduce the viable count of the mould. The method for preparing raisins by adopting the mould inhibitor comprises the following steps: thoroughly cleaning grapes, carrying out sterilization treatment on the surfaces of the cleaned grapes by adopting the mould inhibitor so as to inhibit mould breeding, and carrying out hot air drying on the sterilized grapes. Through verification, raisins prepared by using the mould inhibitor disclosed by the invention show good characteristics in the aspect of sensory quality, the physicochemical indexes also reach a better level, the quality of the raisins can be effectively guaranteed, and the shelf life is prolonged.

The invention discloses a method for removing ginkgolic acid in a water-soluble ginkgo leaf extract, which comprises the following steps: mixing the ginkgo leaf extract with a compound enzyme solution, fully stirring for enzymolysis, adding a modified fullerene-graphene oxide compound for adsorption, then carrying out electrodialysis separation, then carrying out chromatographic column adsorption, refrigerating, crystallizing and removing impurities, thus obtaining the ginkgolic acid in the water-soluble ginkgo leaf extract. And performing membrane concentration and drying to obtain the ginkgo biloba extract without ginkgolic acid. According to the method, a revolutionary breakthrough is realized in the field of purification of the water-soluble ginkgo leaf extract by constructing a synergistic system of biological enzymolysis, nano material adsorption, electrochemical separation and a molecular recognition technology. Compared with a traditional process, the scheme creatively adopts a composite enzymolysis pretreatment technology, and creates favorable conditions for subsequent purification; the innovatively designed modified fullerene-graphene oxide nano composite material can be used for efficiently capturing free ginkgolic acid under a mild condition; gradient removal of ginkgolic acid is achieved through a unique electrodialysis-molecular imprinting coupling technology, the removal efficiency is guaranteed, and flavonoid active ingredients are protected.

The present application provides a mogroside content controllable momordica grosvenori extract, which is obtained by cyclic supersaturation adsorption of macroporous adsorption resin in the momordica grosvenori extraction process, concentration and drying of the overflow of the supersaturation column to obtain momordica grosvenori extract product I, and concentration and drying of the alcohol eluent of the macroporous adsorption resin to obtain momordica grosvenori extract product II. The momordica grosvenori extract product I comprises the following components: 10-18 wt% 11-oxymogroside V, 48-52 wt% mogroside V, 0.05-1 wt% mogroside VI, 0.05-1 wt% siamenoside, 0.5-2 wt% mogroside IV, and 0.5-2 wt% mogroside III. The momordica grosvenori extract product II comprises the following components: 0.5-2 wt% 11-oxymogroside V, 48-52 wt% mogroside V, 2-6 wt% mogroside VI, 2-6 wt% siamenoside, 1-6 wt% mogroside IV, and 1-6 wt% mogroside III. The products I and II have different rare mogroside contents from conventional V50 products, the product I has higher sweetness multiple, and the product II has better taste.

The invention discloses a preparation method for separating and purifying a polyphenol extract from cane molasses, which comprises the following steps: firstly, diluting the cane molasses to 10-15 times of a solid matter, adding pectinase, cellulase and xylanase for composite enzymolysis, centrifuging to take supernate, and sequentially filtering through a multi-stage gradient ultrafiltration membrane; then sequentially passing through AB-8 and XDA-1 macroporous resin chromatographic columns, and carrying out gradient elution by using ethanol; and finally, concentrating or spray-drying the collected eluent to obtain a cane molasses polyphenol concentrated solution or powder. According to the method disclosed by the invention, the problem of low extraction efficiency in the prior art is effectively solved by combining composite enzymolysis with membrane separation and macroporous resin adsorption technologies, the polyphenol purity can be remarkably improved, and a green and efficient preparation method is provided for high-value utilization of the cane molasses.

The invention discloses an oil tea meal and walnut meal compound protein feed and a preparation method thereof, and belongs to the technical field of feeds. The preparation method of the oil-tea meal and walnut meal compound protein feed comprises the following steps: S1, removing impurities from oil-tea meal, crushing, sieving and extracting; filtering, and carrying out Soxhlet extraction on a filter cake by using a solvent; drying to obtain detoxified oil tea meal; s2, walnut meal is subjected to impurity removal, crushing and sieving, and improved walnut meal is obtained; s3, uniformly mixing the detoxified oil-tea meal, the improved walnut meal and a compound enzyme preparation to prepare a fermentation raw material; and S4, uniformly mixing the fermentation raw material, the fermentation substrate regulator and the fermentation inoculant, and fermenting. According to the preparation method of the oil-tea meal and walnut meal compound protein feed, anti-nutritional factors in the oil-tea meal and the walnut meal are comprehensively degraded through physical and chemical detoxification, enzymolysis and microbial fermentation processes, the effective viable count of fermentation products is increased, and the oil-tea meal and walnut meal compound protein feed which is high in protein and easy to digest is prepared.

The application provides a phycocyanin-containing low-sodium salt and a preparation method thereof, and relates to the field of low-sodium salts. The preparation method of the phycocyanin-containing low-sodium salt comprises the following steps: pretreatment, preparation of a composite seed dispersion liquid, and blending crystallization. The preparation method of the phycocyanin-containing low-sodium salt can effectively combine phycocyanin and low-sodium salt, effectively avoids the problem that phycocyanin is easy to fail in the preparation of low-sodium salt due to poor stability, and further avoids the problems that phycocyanin cannot be effectively and uniformly combined with low-sodium salt crystals formed during the growth of low-sodium salt in the crystallization preparation process of low-sodium salt, and the normal crystallization crystal growth of low-sodium salt is affected.

The invention provides a preparation method for improving storage stability and intestinal absorption efficiency of plant saponin, flavone and polysaccharide. The preparation method comprises the following steps: mixing plant powder obtained by pretreatment with an ethanol solution; activated calcium bentonite is added into the crude extracting solution, stirring is conducted after pH is adjusted, and clinoptilolite is added; adding wooden activated carbon and filter-aid diatomite into the supernate, filtering and drying to obtain low-water-content plant extract powder, preparing a suspension from the plant extract powder and deionized water, shearing, emulsifying, performing high-pressure circulating homogenization, sequentially pre-freezing, and performing vacuum freeze-drying to obtain a nanoscale plant extract product. Efficient extraction and purification of saponin, flavone and polysaccharide are achieved through plant raw material pretreatment, ethanol multiple extraction, double-adsorbent impurity removal, activated carbon purification, vacuum belt type drying and nanocrystallization freeze-drying treatment, the intestinal absorption efficiency is improved through nanocrystallization synchronously, and component activity and storage stability are guaranteed through low-temperature drying; and finally, a nanoscale plant extract product with high purity and high activity is obtained.

The invention relates to the technical field of feed preparation, in particular to a whole-plant chenopodium quinoa silage daily ration and a preparation method thereof.The whole-plant chenopodium quinoa silage daily ration adsorbs saponin through an adsorbent, a calcium hydroxide aqueous solution is used for creating an alkaline environment to hydrolyze the saponin, and a weak acid environment generated through fermentation is used for decomposing the saponin for treatment; the content and biological activity of saponin in the quinoa coarse feed are effectively reduced, the inhibition of high-concentration saponin on the activity of beneficial microorganisms such as cellulolytic bacteria and amylolytic bacteria in rumen is effectively avoided, the digestibility of dairy cows on the feed is improved, and the absorption of key nutrient substances is increased; the quinoa concentrated feed contains various raw materials from different sources, and the raw materials are mixed with the quinoa coarse feed, so that nutrition complementation is realized, comprehensive and balanced nutrition is provided for the dairy cow, and meanwhile, the saponin content can be further reduced. The negative influence of the saponin on rumen fermentation of the dairy cow is reduced, so that the growth performance and the production efficiency of the dairy cow are improved.

The invention discloses a composite peptide premix feed capable of improving immunity of livestock and poultry aquatic products and a preparation method thereof, and relates to the technical field of feeds. In order to reduce the use amount of antibiotics in the livestock breeding process, a composite peptide component is added into the premix feed, and the use amount of the antibiotics is reduced by adding bovine lactoferrin peptide in the premix feed. Macrophages and natural killer cells are activated, immune globulin secretion is promoted, and the mucosal immune barrier function is enhanced, so that the autoimmunity of livestock is improved, and the disease resistance of the livestock is improved; and in order to avoid the defect that the feed is easy to mildew to generate mildew toxins, mildew-proof modified attapulgite clay is also prepared and added, so that the mildew speed after the premixed feed and the feed are mixed and watered is effectively slowed down, and the diarrhea rate of livestock is reduced.