222 results about "Linseed oil" patented technology

The invention provides linseed oil rich in vitamin E and capable of enhancing linolenic acid activity and a preparation method of the linseed oil, and belongs to the technical field of edible oil processing. The preparation method of the flaxseed oil comprises the following steps: mechanically polishing and degumming flaxseeds, and then carrying out microwave thermal refining and low-temperature squeezing to obtain virgin flaxseed oil and a squeezed cake; adsorbing and deacidifying the primary oil through modified diatomite to obtain refined oil; carrying out ethanol solution ultrasonic extraction and supercritical CO2 extraction on the pressed cake to obtain a high-purity vitamin E extract; and finally, mixing the extract with the refined linseed oil to obtain the linseed oil. Through the whole-process low-temperature, physical adsorption and efficient extraction and purification process, the retention rate and enrichment degree of vitamin E are remarkably improved, meanwhile, nutritional ingredients such as alpha-linolenic acid are effectively protected, use of synthetic antioxidants is avoided, and the product has the advantages of being high in oxidation stability, good in safety, excellent in sensory quality and the like and is suitable for industrial production. The edible oil is suitable for being used as a nutritional supplement, edible oil or food additive.

The invention belongs to the technical field of coating compositions. The invention provides environment-friendly water-based paint with high wear resistance and a preparation method of the environment-friendly water-based paint. The water-based paint is prepared from the following raw materials in parts by weight: 80 parts of waterborne polyurethane, 7-10 parts of modified montmorillonite, 1 part of a dispersing agent, 8-12 parts of microcapsules and 80 parts of water, the modified montmorillonite is obtained by modifying montmorillonite by adopting chitosan; the wall material of the microcapsule is composed of gelatin and carrageenan according to the weight ratio of 3: 1; a core material of the microcapsule is composed of castor oil and linseed oil according to the weight ratio of 2: 1. The water-based paint disclosed by the invention has excellent wear resistance on the basis of having excellent optical performance, mechanical performance, liquid resistance and self-repairing performance at the same time. The light transmittance of the obtained water-based paint reaches 95% or above, the hardness is 4H, the adhesive force is grade 0, the liquid resistance is grade 1, and the maximum mass loss of a paint film per 100 turns is only 12.0 g.

The present disclosure provides an acne-removing and recurrence-preventing composition suitable for acne-sensitive skin and its application, belonging to the field of cosmetic technology. The present disclosure selects epigallocatechin gallate glucoside, brazilin, Hibiscus sabdariffa flower extract, Ziziphus jojoba bark extract, linseed oil unsaponifiables, and guaiac extract as active ingredients of the acne-removing and recurrence-preventing composition. The active ingredients interact with each other to quickly inhibit the growth of acne-related pathogens and regulate the skin microecology; effectively inhibit skin inflammation throughout the acne process, play a role in preventing and suppressing inflammation, effectively repair the skin barrier, reduce redness, and regulate the skin's oil balance to prevent acne recurrence; in addition, the acne-removing and recurrence-preventing composition also has the effect of removing yellowness, evens skin tone, and improves skin roughness. The acne-removing and recurrence-preventing composition is mild and non-irritating and can be used on sensitive skin, expanding the application range of the acne-removing and recurrence-preventing composition.

A phase change microcapsule for drilling fluid cooling and its preparation method and application, belonging to the field of oilfield chemistry technology; the preparation method of the phase change microcapsule of the invention includes the steps as follows: the core materials of NaNO3 and KNO3 are dried, heated, melted, cooled and ground to obtain a phase change material mixture; added emulsifier into the linseed oil, then heated and stirred to obtain the oil phase; the phase change material mixture were added into the suspension of cellulose nanofibers (CNFs), then stirred followed by adding ammonium hydroxide to obtain the water phase; mixed the water phase with the oil phase, heated and stirred to form water-in-oil (W / O) emulsion; then added shell prepolymer material (tetraethyl silicate) into the emulsion, after centrifugation, washing and drying, the phase change microcapsule for cooling drilling fluid was obtained.

The invention discloses flax olive oil for improving, preventing and treating cardiovascular diseases, and belongs to the technical field of grease. The flax olive oil for improving, preventing and treating cardiovascular diseases mainly comprises the following raw material components: olive oil and flaxseed oil, and the mass ratio of the olive oil to the flaxseed oil is (1.5-2.5): 1. Wherein the flaxseed oil is obtained by screening flaxseeds, removing impurities, removing abnormal grains, crushing, extracting for multiple times by adopting a mixed extraction agent, degumming, decolorizing and deodorizing, the extraction temperature is 20-25 DEG C, the liquid-solid ratio is (9-10): 1mL / g, the single extraction time is 35-45 minutes, and the pressure of an extraction tank is 0.30-0.40 MPa; the mixed extraction agent is prepared from the following components in percentage by mass: 18.8 to 37.7 percent of ethanol, 29.7 to 30.4 percent of n-butane, 19.7 to 38.5 percent of dimethyl ether and 12.4 to 12.9 percent of water.

The invention discloses a compound feed for weaned piglets and a preparation method thereof, relates to the technical field of feeds, and solves the problems of high stress, low food consumption, slow weight gain, intestinal damage, high diarrhea rate and low survival rate of weaned piglets. Each ton of compound feed for weaned piglets comprises the following raw materials: corn, broken rice, soybean meal, super steam fish meal, extruded soybeans, fermented soybean meal, peanut meal, flour, whey powder, glucose, white sugar, soybean oil, linseed oil, coconut oil, calcium formate, calcium hydrophosphate, amino acid, a vitamin additive, a trace element premix, composite dietary fibers, auxiliary materials and the like. The feed additive can improve the feed intake of piglets, protect the intestinal health of the piglets, enhance the immunity, relieve the weaning stress of the piglets, reduce the incidence rate of diarrhea and disease of the piglets and improve the weight gain rate of the piglets.

A phase change microcapsule for drilling fluid cooling and its preparation method and application, belonging to the field of oilfield chemistry technology; the preparation method of the phase change microcapsule of the invention includes the steps as follows: the core materials of NaNO3 and KNO3 are dried, heated, melted, cooled and ground to obtain a phase change material mixture; added emulsifier into the linseed oil, then heated and stirred to obtain the oil phase; the phase change material mixture were added into the suspension of cellulose nanofibers (CNFs), then stirred followed by adding ammonium hydroxide to obtain the water phase; mixed the water phase with the oil phase, heated and stirred to form water-in-oil (W / O) emulsion; then added shell prepolymer material (tetraethyl silicate) into the emulsion, after centrifugation, washing and drying, the phase change microcapsule for cooling drilling fluid was obtained.

The invention relates to the technical field of health food, in particular to a nervonic acid nutrient composition for relieving sleep disorder and application of the nervonic acid nutrient composition for relieving sleep disorder. The active components comprise natural vegetable oil such as acer truncatum seed oil purified nervonic acid, linseed oil and the like and gamma-aminobutyric acid extracted by fermentation; the synergistic component is prepared from soybean enzymolysis phosphatidylserine, saccharomycetes fermentation coenzyme Q10 and plant source B vitamins; the slow-release carrier adopts pectin-Arabic gum composite gel and plant starch to form a natural cross-linked structure, and long-acting release for 8-12 hours is realized through physical cross-linking. Green technologies such as ultrasonic dispersion and low-temperature drying are adopted in the preparation process, and chemical synthesis steps are avoided; the composition can improve the difficulty in falling asleep and improve the sleep quality, the activity retention rate is greater than or equal to 85% after the composition is stored at 45 DEG C for 6 months, and the composition is suitable for preparing capsules, gel candies and other health-care foods and has no dependence after being taken for a long time.

The present invention discloses a feed additive for secondary spawning of red claw crayfish, as well as its preparation method and application. The present invention comprises the following components: 29.5-30.5% bait powder, 24.5-25.5% methyl farnesate, 9.5-10.5% schizochytrium powder, 9.5-10.5% Porphyridium powder, 7-8% 5-hydroxytryptamine creatinine sulfate, 9.5-10.5% linseed oil, and 7-8% alanine hydroxamic acid; the bait powder is a mixture of lugworm powder and squid viscera powder in a weight ratio of 4-6:5. The present invention also provides a preparation method for the above-mentioned feed additive. The feed additive of the present invention is added to conventional shrimp feed to prepare a compound shrimp feed for feeding the first batch of spawning shrimp of red claw crayfish. The present invention can significantly promote the gonadal development of spawning shrimp of red claw crayfish, rapidly mature their ovaries in a short period of time, improve the spawning rate of spawning shrimp obtained therefrom, and thereby increase the supply of shrimp fry.

The invention discloses diglyceride composite edible oil assisting in reducing blood sugar and blood fat and a preparation method thereof, and relates to the technical field of functional edible oil. The diglyceride composite edible oil for assisting in reducing blood sugar and blood fat is prepared from the following raw materials in parts by weight: 40 to 60 parts of high-purity diglyceride oil, 2 to 3 parts of modified flaxseed oil micro powder, 2 to 3 parts of modified camellia oleosa seed oil microcapsule powder, 5 to 8 parts of perilla seed oil, 2 to 5 parts of phytosterol ester, 1 to 3 parts of resistant dextrin, 0.1 to 0.5 part of rosemary extract and 0.05 to 0.15 part of potassium citrate. The compound edible oil is scientific in formula, and the high-purity diglyceride oil is used as a core and matched with various functional components such as the modified flaxseed oil micro powder to synergistically play a role in assisting in reducing blood sugar and blood fat. Through an exclusive modification process, gradient high-pressure homogenization and other standardized preparation processes, the stability and dispersion uniformity of the components are improved, the absorption rate of the active components is high, the storage life is long, no artificially synthesized additive is added, the food is safe to eat, and practicability and health are both considered.

Natural turmeric and hibiscus inks were developed for use on fabrics and writing surfaces. Ethanolic extracts of turmeric and hibiscus were obtained and formulated with environmentally friendly mordants such as ferrous sulfate, ascorbic acid, and apple cider vinegar, and thickeners such as linseed oil and aloe vera. These treatments were tested on fabric, filter paper, and notebook paper. Color and color loss were evaluated using the Paint program when exposed to sunlight and washing (in the case of fabric), comparing the RGB and Hex pixel values ​​obtained before and after sun exposure and washing. The degree of similarity was assessed using a digital Color Matcher Tool with the Hex and RGB data. Once the best treatment with the aforementioned mordants was determined, the ink formulation was developed using thickeners such as gelatin, alginate, cornstarch, and honey.It has a pleasing color and good consistency for use on fabric and paper. It's possible to create inks for writing and dyeing fabrics with readily available ingredients, thus contributing to environmental protection.

The application discloses a method for preparing an oat-based beverage through biological enzymolysis and a product thereof, and comprises the following steps: continuously hydrolyzing starch, cellulose, protein and other substances in oat slurry by using high-temperature-resistant amylase, cellulase, saccharifying enzyme, papain and alkaline protease, sufficiently releasing reducing substances in the oat, simultaneously generating reducing peptides, improving the free radical scavenging capacity of the oat slurry, and improving the emulsification stability of the oat slurry due to the moderate degradation of macromolecular substances such as starch, cellulose and protein; glycerol is added in three stages at a controlled speed, so that the glycerol is fully mixed with flaxseed oil, and excessive glycerol is avoided from adhering to lipase to reduce the activity of the enzyme, thereby improving the reaction efficiency.

The invention discloses an artificial feed for efficient propagation of low-age larva parasitic wasps of prodenia litura. The artificial feed is prepared from the following raw materials: agar powder, soybean meal, sweet potato vines with leaves, yeast powder, wheat germs, sodium benzoate, vitamin C, multivitamins, linseed oil, chlortetracycline hydrochloride soluble powder and the like. The artificial feed is used for feeding 2-5-year-old prodenia litura larvae parasitized by parasitic wasps, and the pupation rate and eclosion rate of the parasitic wasps can both exceed 93%.

The invention relates to the technical field of anti-rust materials, and discloses a metal anti-rust additive, an anti-rust agent and a preparation method of the metal anti-rust additive and the anti-rust agent. Comprising the following components in parts by weight: 30-50 parts of an organic carboxylic acid derivative, 10-25 parts of a heterocyclic compound, 15-30 parts of a silane coupling agent, 3-8 parts of an antioxidant, 1-3 parts of an organic-inorganic hybrid nanofiller, 1-3 parts of a pH-responsive self-repairing microcapsule and an organic solvent, the organic-inorganic hybrid nano filler is composed of silane coupling agent modified nano SiO2, and the pH response type self-repairing microcapsule takes chitosan as a shell material and takes a mixture of phytic acid, dodecenylsuccinic acid, benzotriazole and linseed oil as a core material. The metal antirust additive provided by the invention solves the problem that the existing metal antirust additive is difficult to realize long-acting antirust protection of metal products while ensuring an ultrathin oil film.

The present invention discloses a polyurethane thermal insulation material and applications thereof. The polyurethane thermal insulation material adopts boron-aluminum hybrid polysiloxane-modified polyol and fluorine-modified polyisocyanate n-polymer as corresponding components in component A and component B, respectively. Practice has shown that the polyurethane thermal insulation material not only greatly improves the temperature resistance of the polyurethane thermal insulation material (can be used for a long time at 160°C), but also has a high flame retardancy (limiting oxygen index can reach 30%), and also has both hydrophobic and oleophobic properties, so-called ambiphobic function, with dual effects of water resistance and oil resistance. The polyurethane thermal insulation material has a contact angle with water greater than 140° and a contact angle with linseed oil greater than 125°, and can be preferably used in building thermal insulation and thermal pipeline equipment.

The invention relates to an environment-friendly soil stabilizer which comprises the following components in parts by weight: 10-40 parts of modified polylactic acid, 30-60 parts of wheat straw liquid, 5-20 parts of colloid, 30-60 parts of linseed oil, 15-20 parts of sodium alginate, 10-12 parts of rosin, 25-50 parts of filler and 1-2 parts of sucrose. By adopting the technical scheme, natural components in the wheat straw liquid are combined with a film formed by polylactic acid, so that the crack resistance and durability of soil can be enhanced, the moisture retention capacity of the soil can be improved, and the environmental protection property of the soil stabilizer can be improved by mixed use; the colloid improves the stability and moisture retention capacity of soil, the linseed oil improves the overall structural stability and cohesiveness of the soil and reduces soil cracking, the sodium alginate improves the cohesiveness and overall stability of the soil, the sodium alginate can help to reduce the cracking of the soil and reduce the influence of soil exposure cracking, and the rosin improves the hardness and the adhesiveness, so that the anti-cracking performance of the soil is improved. The cane sugar serving as a component of the soil stabilizer can enhance the cohesiveness and stability of the soil, promote the microbial activity and improve the soil structure at the same time.

The invention discloses a black pepper extract-containing composition capable of promoting intestinal digestion and absorption and a cat food, and relates to the technical field of animal foods.The composition is prepared by compounding fish oil, krill oil, sunflower seed oil and linseed oil according to a specific proportion based on compound functional grease and natural plant extracts in a scientific proportion; according to the invention, the ratio of omega6 fatty acid to omega3 fatty acid is optimized to an ideal range of (2.5-3.2): 1, black pepper extract with functions of promoting digestion and regulating flora is synergistically added, and through combination of scientifically proportioned functional components and an advanced process, an'intestinal tract-microorganism-metabolism 'experiment verifies that digestion and absorption of cat nutrition are realized, and the effect of promoting digestion and regulating flora is achieved. Meanwhile, the multi-dimensional and systematic improvement of oxidation resistance, inflammation resistance, immunity improvement and metabolism functions is achieved.

The application discloses a method for simultaneously producing five components in flaxseed, comprising the following steps: (1) preliminarily extracting flaxseed gum and lignan from flaxseed; (2) preparing flaxseed oil by cold pressing of degummed flaxseed through a hydraulic oil press; (3) performing skin kernel separation on the degummed and defatted flaxseed; (4) crushing the flaxseed skin after the skin kernel separation to extract flaxseed gum and flax lignan again; (5) preparing flaxseed oil again from the flaxseed kernel after the skin kernel separation; (6) extracting flaxseed protein from the defatted flaxseed kernel; (7) separating flax cyclic peptide from the flaxseed oil prepared twice; and (8) extracting flax cyclic peptide again from the defatted and deproteinized flaxseed kernel. The method is interlocked, the preliminary extraction or preparation of partial components provides favorable conditions for the flaxseed skin kernel separation, and after the flaxseed skin kernel separation, the extraction or preparation rate of the components and other components is improved, the components are complementary, the method has low cost, simple and easy-to-operate process, is green and environment-friendly, can be produced on a large scale, and in addition, the five components are simultaneously produced, so that the added value of the flaxseed is greatly improved.

The present invention relates to a carbon material composition in which the proportion of particles having a volume-based particle size distribution of 3 μm or less is 16.0-40.0%, and the maximum torque in measurement of the oil absorption amount for linseed oil is 13.0 N⋅m or less. The present invention also relates to a carbon material composition in which the proportion of particles having a volume-based particle size distribution of 3 μm or less is 16.0-40.0%, wherein the ratio (SAe / SAp) of the specific surface area SAe when the carbon material composition is formed into an electrode plate to the specific surface area SAp of the carbon material composition in powdered form is 0.70-1.00 (the specific surface area SAe is the specific surface area of the electrode plate in which the carbon material composition is used).

The invention discloses a composite bonding type anti-corrosion belt, a preparation method of the composite bonding type anti-corrosion belt and an anti-corrosion method of the composite bonding type anti-corrosion belt, and the composite bonding type anti-corrosion belt comprises the composite bonding type anti-corrosion belt and a quick film forming agent, the composite bonding type anti-corrosion belt comprises the following components in parts by weight: polyester non-woven fabric, linseed oil, mineral grease, a polymer composite corrosion inhibitor, a lubricating agent, a mildew preventive, a thickening agent, a curing agent, a filling agent and tannic acid. The quick film forming agent comprises the following components in parts by weight: an isocyanate prepolymer, amine-terminated polyether, a chain extender, fumed silica, a dispersing agent, a defoaming agent and color paste. Through multiple modification means, the problems that other coating technologies are complex in construction, single in appearance color, prone to being damaged during treading, incapable of being soaked in water, prone to breeding mould on the surface in a dark and humid environment, high in manufacturing cost and the like are solved.

The invention relates to a camellia oil-containing gel candy and a preparation method thereof, the camellia oil-containing gel candy comprises a candy body and stuffing, and the candy body is prepared from the following components in parts by weight: 30-40 parts of gelatin, 15-20 parts of purified water, 5-10 parts of glycerol and 40-50 parts of sorbitol; the stuffing is prepared from the following components in parts by weight: 38 to 42 parts of camellia oil, 33 to 37 parts of linseed oil and 23 to 27 parts of hemp seed oil. Through the unique structural design (double-layer stuffing) and formula, different functional components can be accurately released in different parts of the intestinal tract, so that the dual effects of regulating intestinal flora and relieving constipation are realized.

The utility model relates to the technical field of linseed oil decoloring, and discloses a linseed oil decoloring device which comprises a tank body, a feeding pipe is fixedly connected in the tank body, a cover plate is arranged on the inner wall of the tank body, a fixed box is fixedly connected to the outer wall of the tank body, a worm is rotationally connected in the fixed box, and a worm is arranged on the worm. A worm is fixedly connected to the outer wall of the tank body, a handle is fixedly connected to the outer wall of the worm, a worm gear is connected to the tooth end of the worm in a meshed mode, a connecting rod is fixedly connected to the interior of the worm gear, a gear body is fixedly connected to the outer wall of the connecting rod, a rack is connected to the tooth end of the gear body in a meshed mode, and a stirring assembly is arranged in the tank body. According to the utility model, through the cooperation of the fixed box, the handle, the worm, the worm gear, the connecting rod, the gear body and the rack, the mounting and dismounting of the cover plate are simplified, so that the operation intensity of workers is reduced, meanwhile, the workers can conveniently clean, maintain or replace internal parts of the tank body, and the overall service life of the device is further prolonged.

The invention discloses nutrition powder for vegetarian bird rehabilitation. The formula of the nutrition powder consists of the following components in parts by weight: 19 to 21 parts of compound amino acid, 14 to 15 parts of soybean enzymolysis protein powder, 4 to 6 parts of compound vitamin, 0.8 to 1.2 parts of compound trace element, 31.7 to 33.7 parts of glucose, 4.5 to 5.0 parts of sodium chloride, 3 to 4.0 parts of sodium bicarbonate and 1.8 to 2.2 parts of potassium citrate. The linseed oil microcapsule powder accounts for 14-16 parts by weight, and the powder essence for food accounts for 0.8-1.2 parts by weight. Compared with the prior art, the nutrition powder for the vegetarian birds has the advantages that the nutrition powder for the vegetarian birds is easy to digest by the pet birds and comprehensive in nutrition, nutrition is supplemented for the diseased pet birds, the digestion and absorption burden of the diseased pet birds is relieved, the body weight is effectively increased, and the problem of malnutrition is solved.

The invention discloses a preparation method of torreya grandis gel candies with an effect of reducing total cholesterol. The invention belongs to the technical field of functional food, the Chinese torreya oil and the flaxseed oil have a synergistic effect, and after the Chinese torreya oil and the flaxseed oil are compounded, the blood fat metabolism can be effectively regulated, the total cholesterol level can be reduced, and the content of high-density lipoprotein cholesterol can be increased; the Chinese torreya oil is extracted through a low-temperature pressing process, the linseed oil is prepared through a cold pressing process, active components in the raw materials are reserved to the maximum extent, and meanwhile, the stability and uniformity of functional components in the product are ensured by combining a feeding pump filtering process and a rolling die shaping process; by optimizing the formula and the preparation process of the gel matrix, the product has good elasticity and chewing feeling, is convenient to carry and take and is suitable for daily use. The health-care food does not contain artificially synthesized additives, all the raw materials are natural sources, and the health-care food is suitable for patients with hypercholesterolemia and crowds needing to regulate blood fat, and has relatively high safety and market promotion value.

The invention relates to a high-wear-resistance offset printing over-printing varnish for packaging and a preparation method thereof, and the formula of the high-wear-resistance offset printing over-printing varnish comprises phenol-free resin, linseed oil, tung oil, high-boiling-point aromatic-free solvent oil, polyethylene wax and an auxiliary agent, and also comprises erucyl amide; phenol-free resin is used in the gloss oil, so that the harm to the environment can be reduced; the erucyl amide is added, so that the printing performance of the gloss oil can be improved, and the wear resistance and scratch resistance of the gloss oil are improved. Compared with common offset printing gloss oil, the high-wear-resistance offset printing gloss oil provided by the invention is high in glossiness, good in wear resistance and good in drying performance, and a printed product is not easy to yellow after being used for printing; after the surface of a printed product is printed, the gloss of the printed product is improved, the printed product is well protected, abrasion is not prone to occurring, moisture is prevented, and the quality of the printed product can be effectively improved.

The present application relates to a kind of fat powder for reducing weaning piglet dead rate and its preparation method and application, and the composite lipid in the preparation raw material of fat powder includes 1,3-di-oleic acid-2-palmitic acid triglyceride, 24 degrees palm oil, rice bran oil, coconut oil, linseed oil, caprylic triglyceride, capric acid triglyceride, alpha-lauric acid monoglyceride and tributyrin.The present application develops the fat acid composition close to pig milk fat structure, let piglet continue lactation period in weaning period to enable approach mainly with lipid, meet the compound energy demand of fast, medium and slow, avoid falling into energy potential difference;And the specific combination of medium and short chain fatty acids, both can improve the energy efficiency of weaning piglet, also have bacteriostatic disease characteristics, can improve the immunity of piglet, reduce the diarrhea rate.This composite lipid overcomes the problem such as piglet energy deficiency and indigestion caused by single raw material oil due to unsuitable lipid structure, can significantly reduce weaning stress, reduce the diarrhea rate and dead rate.

The invention discloses a preparation method of regenerated cellulose fibers containing linseed oil and collagen. The preparation method comprises the following steps: S1, preparing a linseed oil microcapsule solution; s2, preparing a collagen solution; s3, blending the linseed oil dissolving solution, the collagen solution and the viscose spinning solution; s4, spinning; s5, solidification and curing; s6, carrying out post-treatment; the olein viscose fiber is obtained. The problems of poor solubility and dispersibility of the linseed oil and the collagen are solved, and the linseed oil and the collagen can be uniformly distributed in a solution, so that the combination effect of the linseed oil and the collagen with the regenerated cellulose fibers is improved; by adopting a microcapsule technology, the linseed oil and the collagen are wrapped, so that the loss of the linseed oil and the collagen can be reduced, and the utilization rate is increased; by compounding the linseed oil and the collagen with the regenerated cellulose fiber, the fiber can be endowed with better free radical scavenging, anti-oxidation and moisturizing properties.

The invention belongs to the technical field of functional food, and particularly relates to a brain-strengthening and eyesight-improving composition as well as a preparation method, a product and application thereof. The composition is prepared from algal oil, linseed oil, arachidonic acid, marigold extract, zeaxanthin suspension oil, NA nervonic acid and PS phosphatidylserine according to a specific weight part ratio. Wherein the marigold extract is prepared by adopting freeze-grinding pretreatment, combining enzymolysis and an ultrasonic-microwave synergistic extraction technology, and performing nanofiltration membrane concentration and vacuum freeze-drying. According to the composition, through the synergistic effect of all the components and an innovative extraction process, the effects of efficiently strengthening the brain and improving eyesight are achieved, and compared with a traditional formula and an extraction method, the component activity retention and the effective component extraction rate are remarkably improved.

The invention provides a feed additive for improving the hypoxia tolerance function of micropterus salmoides. The feed additive is prepared from the following raw materials in percentage by mass: 20% of arachidonic acid and the balance of maltodextrin. The invention also provides a feed composition of the feed additive. The feed is prepared from the following raw materials in percentage by mass: 450 per mill of fish meal, 50 per mill of fermented hermetia illucens pulp, 69.5 per mill of enzymolysis chicken powder, 60 per mill of chicken liver powder, 60 per mill of enzymolysis soybean meal, 75 per mill of fermented soybean meal, 60 per mill of cottonseed meal, 29 per mill of dextrin, 40.5 per mill of cassava starch, 23 per mill of soybean oil, 23 per mill of linseed oil, 15 per mill of monocalcium phosphate, 5 per mill of choline chloride, 1 per mill of a micropterus salmoides premix, 1 per mill of zeolite powder and 20 per mill of a feed additive. The feed composition is used for improving the hypoxia tolerance of the micropterus salmoides. According to the invention, arachidonic acid is used as a functional active substance to prepare the hypoxia stress resistant functional feed, and the addition of arachidonic acid can significantly activate liver angiogenesis genes, promote the liver angiogenesis level and improve the hypoxia tolerance of largemouth bass.