42 results about "Nutrient supplementation" patented technology

The invention provides a mesenchymal stem cell culture monitoring system based on multiple parameters, and relates to the technical field of data processing, and the mesenchymal stem cell culture monitoring system comprises a first-level control instruction generation module which is used for generating a second-level control instruction when the metabolism-morphological abnormality association intensity in a combined fuzzy state matrix is judged to reach a preset association threshold value through a fuzzy rule base; when the abnormal state flag bit indicates that the isolated metabolism is abnormal, a second-level control instruction is generated; the driving unit is used for responding to the first-stage control instruction and cooperatively driving the buffer solution injection unit and the nutrition supplementing pump; responding to the secondary control instruction, and dynamically adjusting the opening degrees of a stirring rate controller, a temperature feedback loop and a gas proportional valve of the bioreactor. The control efficiency and the cell culture stability are improved.

This article is a gastrostomy nutrient administration device for administering gastrostomy nutrient to a patient. The article is used by fixing a nutrient-containing bag containing gastrostomy nutrient to a clamping device using a fixing plate with a discharge port formed at the front end of the bag protruding forward through a connection hole, detachably connecting one end of a gastrostomy tube to the discharge port of the nutrient-containing bag, and detachably connecting the other end of the gastrostomy tube to the patient's gastrostomy stoma. Next, a winding device is attached to the rear end of the nutrient-containing bag, and the nutrient-containing bag is gradually squeezed using the winding device, starting from the rear end, causing the gastrostomy nutrient to be discharged from the discharge port of the nutrient-containing bag, allowing the gastrostomy nutrient to be administered to the patient via the gastrostomy tube. In this product, the clamping tool is attached to the support plate so that it can rotate vertically around a first pivot axis, allowing for smooth squeezing of the gastrostomy nutrient solution from the nutrient solution bag using the winding tool. Furthermore, in this product, the support plate is attached to the support base so that it can rotate horizontally around a second pivot axis, allowing for easy change of the direction of the discharge port of the nutrient solution bag attached to the clamping tool.

The application discloses a kind of north fruit tree spring frost injury freeze protection fluid and its preparation and application method, the freeze protection fluid is by plant growth regulator, saccharide, amino acid component, mineral nutrient component, boric acid and film-forming protective component and water compound, each raw material is mixed uniformly according to defined mass fraction ratio. When using, stock solution dilution 300-700 times, 24-72h before frost, it is suitable for cherry, apple, pear, apricot and other north fruit tree flowering freeze protection. The application has multiple effects of freeze protection, membrane stabilization, repair and nutrient supplementation, can maximize protect cell integrity and reduce irreversible necrosis at low temperature. Even if suffering from low temperature freeze injury, the flower organ is less damaged after spraying the freeze protection fluid, and recovers quickly.

Protein-rich nutrient supplements and animal feed supplements derived from an anaerobic bacterial process are generated through a myriad of cell rupturing and protein fractionation / purification processes. Bacterial fermentation systems and methods of obtaining one or more protein-containing portions from a fermentation process using carbon monoxide-containing gaseous substrates are provided. The invention further provides compositions of protein-rich nutrient supplements with useful applications for intake by a variety of different animals and humans.

The invention belongs to the technical field of agriculture, and particularly relates to a special nutritional supplement for crop rotation and a preparation method thereof. The special nutritional supplement for crop rotation comprises the following components in parts by weight: 45-50 parts of a hermetia illucens sand fermentation product and 30-35 parts of an algae extract, the hermetia illucens sand fermentation product is prepared by mixing hermetia illucens sand, compound bacteria, bean dregs and water, pulping and fermenting; the algae extract is prepared by mixing brown algae, red algae and chlorella and then fermenting. The special nutritional supplement for crop rotation prepared by the invention is simple in raw material source and low in preparation cost, can be used for a corn and soybean crop rotation planting mode in agriculture in high-altitude areas, and is beneficial to realizing double high yields of corn and soybean.

The invention discloses a planting method for relieving premature senility of leaves of Nouronia queen grapes. Aiming at the ubiquitous leaf yellowing and premature senility phenomena in the planting of the queen of Kanea grapes, the invention provides a dynamic planting management technology combining staged precise nutritional supplement and immune regulation, and specifically comprises the following steps: respectively applying chelated boron-zinc-iron-magnesium leaf fertilizers in a 3-4-leaf period, a 4-6-leaf period, a 6-10-leaf period and a reproductive growth period; according to the present invention, by matching with the beta-glucan, the chitin oligosaccharide and the glucan oligosaccharide immunity inducer, and combining with the film stability protection measure during the high temperature period, the physiological decline of the leaves is systematically delayed, the accumulation and the transport of the photosynthetic product are promoted, and the sugar degree and the coloring uniformity of the fruits are improved, such that the commercial fruit rate and the acre yield are significantly improved, and the sustainable development of the None queen grape industry is assisted.

The utility model provides a tadpole feeding device which comprises a floating ring and a food bearing net bag, the middle of the floating ring is of a hollow structure, the food bearing net bag is connected with the floating ring, and the tadpole feeding device is used for feeding tadpoles. The feed bearing net bag is connected with the floating ring, the floating ring plays a role in floating on the water surface, the feed bearing net bag is used for bearing blocky feed, and the size of the blocky feed is larger than that of meshes of the net bag. The tadpole feed is located under the water surface, does not sink to the water bottom and can suspend in the water, so that tadpoles can conveniently eat the feed in the water and can also enter the net bag to eat the feed; the tadpoles are prevented from gathering on the water surface to introduce natural enemies, the survival rate of the tadpoles bred outdoors is improved, and the feed is prevented from sinking to the water bottom to ferment and pollute water. The tadpole feeding device is simple and novel in structure and convenient to assemble and disassemble, nighttime feeding can be expanded, nutrition supplement can be carried out on tadpoles by means of insects, the growth cycle of the tadpoles is shortened, and the breeding cost is reduced.

The present application relates to the field of illumination and modified atmosphere combined preservation technology, and discloses a method for preserving litchi and maintaining Vc of litchi by using LED illumination combined with modified atmosphere packaging. The method comprises the following steps: picking fresh litchi, immediately screening out litchi without disease and insect pests and mechanical damage, retaining complete fresh branches and leaves, and precooling the screened litchi; after the precooling of the litchi, the dry end of the litchi is immersed in a nutrient supplement hydrogel, the litchi is placed flat, is packaged by using a fruit and vegetable film, and a slow-release antibacterial sheet is arranged inside; the packaged litchi is placed in a thermostat with an ambient temperature of 4-10 DEG C and a humidity of 85-95% for preservation, and the illumination intensity of white light or red and blue light is 70-90 μmol·m ‑2 ·s ‑1 The present application uses red and blue light combination, white light illumination to promote photosynthesis to form an internal microcirculation system for low-temperature storage for the first time to preserve litchi, effectively prevents loss of nutritional ingredients, and can also increase the vitamin C content of litchi to a certain extent.

The invention relates to the technical field of pesticides, and particularly discloses a quality-improving and yield-increasing pesticide composition and a preparation method thereof. The quality-improving and yield-increasing pesticide composition is composed of a drug-loading core and an intelligent response shell wrapping the drug-loading core, the drug-loading core is metal-doped hollow carbon microspheres loaded with pesticide active ingredients, and the intelligent response shell is a cyclodextrin-adipic dihydrazide cross-linked network formed through host-guest interaction and dynamic covalent bonding. According to the invention, the acid sensitivity of hydrazone bonds and the enzyme sensitivity of cyclodextrin skeletons are utilized to construct a dual-signal response controlled release mechanism, so that pesticide is ensured to be released in an explosive manner only in a dual environment in which low pH and specific enzyme exist at a pathogenic bacterium infection point at the same time, and'mistaken release 'caused by environmental fluctuation is greatly avoided; the composition has multiple functions of high drug loading capacity, synergistic sterilization, nutrition supplement and the like, and the raw materials are biodegradable and environment-friendly.

The invention discloses a degradable mulching film compounded with soil conditioning and mineral elements and a preparation process of the degradable mulching film, and relates to the technical field of crossing of ecological agriculture and green plastic functional materials. The material is prepared by compounding and granulating the following components in percentage by mass: 5.0%-10.9% of a natural inorganic mineral material, 2.5%-4.1% of a humic acid substance, 7.5%-9.5% of an ion exchange activated mineral, 2.5%-2.7% of a far infrared and terahertz functional mineral, 6.8%-12.5% of a filler and a modifier, and 70.0% of PEF or PLA degradable resin. Natural inorganic mineral materials, humic acid substances, ion exchange activated minerals and far infrared and terahertz functional minerals are mixed in proportion and processed into nano powder, and then the nano powder is compounded with PEF or PLA degradable resin, so that the mulching film has triple functions of soil improvement, micronutrient supplementation and mulching film covering at the same time; the problems that a traditional mulching film and an existing biodegradable mulching film are single in function, and soil conditioning and nutrition supplementing cannot be achieved at the same time are solved.

The present application relates to Armillaria cultivation technical field, especially to a kind of Armillaria wild-like cultivation method.The present application provides a kind of Armillaria wild-like cultivation method, comprising the following steps: (1) the shrub cotoneaster is soaked using nutrient solution;(2) the shrub cotoneaster after soaking is placed in planting pit, and Armillaria seed is scattered, and after covering soil, culture is carried out, and every 30~40d is sprayed once nutrient supplement;(3) after starting to mushroom every year, 2~3 times of nutrient enhancer are sprayed.The Armillaria wild-like cultivation method provided in the present application can improve the utilization efficiency of Armillaria on shrub cotoneaster by pretreating shrub cotoneaster, and nutrient supplement and nutrient enhancer are added during the growth of Armillaria and when mushrooming, which can significantly shorten the mushrooming time of Armillaria, and can prolong the duration of mushrooming and improve the total yield of Armillaria, improve the economic benefit of planting farmers.

The invention provides a plant cold-proof, stress-resistant and anti-freezing method for enhancing plant respiratory conduction efficiency, and relates to the technical field of plant cultivation and stress-resistant protection. According to the method, a composite anti-freezing agent containing auxin, a conduction accelerant, a stress-resistant inducer, an osmotic regulator and a nutritional supplement is prepared and sprayed to the whole plant 24-48 hours before low-temperature freezing injury occurs, the respiration and nutrient conduction efficiency of the plant are enhanced, dry matter is quickly accumulated to reduce the freezing point of cells, and a stress-resistant defense system is started. The core innovation lies in multi-component synergistic adaptation, precise spraying opportunity control and broad-spectrum crop adaptability, and the problems that a traditional method is limited in anti-freezing effect and prone to causing physiological unbalance of plants are solved. Practice verification shows that the method can improve the cold resistance of the plants by 2-5 DEG C and reduce the freezing damage loss rate by more than 60%, is suitable for various plants such as field crops, garden crops and commercial crops, is simple and convenient to operate and controllable in cost, and provides effective technical support for plant cultivation in an extremely low-temperature environment.

The invention discloses an ecological bait production method based on a food chain, which comprises the following steps: S1, mixing wine brewing enzyme liquid and culture tail water in proportion, and stirring to form a nutrient medium required by microalgae growth; s2, conveying the nutrient medium into a microalgae culture module, and regulating and controlling illumination and dissolved oxygen conditions; part of microalgae is conveyed to the plankton breeding unit to cultivate plankton to construct a live bait chain; s3, tail water generated by breeding flows back to the plankton breeding unit to serve as a nutrition supplement source of plankton, and closed-loop circulation is achieved.

The invention provides a method for improving saline-alkali soil through low-investment planting of sweet sorghum. The method is characterized in that a circulating planting method with one period of three years is adopted; in each period, in the first year and the second year, the sweet sorghum is planted under the condition of zero fertilization, high-sugar-content sweet sorghum stalks and sweet sorghum grains with balanced nutrition are harvested, and more salt ions are taken away through the strong absorption effect of the sweet sorghum, so that the salt content in the saline-alkali soil is reduced. In the third year, balanced fertilization is conducted on the saline-alkali soil, and other salt-tolerant crops are subjected to crop rotation. The sweet sorghum is planted through zero fertilization in the first two years, more salt ions Na < + > in the saline-alkali soil are taken away while the requirements for normal growth, the stem sugar content and the grain nutrient content of the sweet sorghum are met, and biological improvement of the saline-alkali soil is achieved; in the third year, after nutrients are comprehensively and quantitatively supplemented, cotton or oil sunflowers are planted in an alternate cropping mode, the biodiversity microenvironment of the saline-alkali soil is further improved, the nutrients are balanced, the salinity and alkalinity are reduced, and therefore the purposes of saline-alkali soil nutrient conservation, biodiversity planting and soil-borne disease prevention are achieved.

The embodiment of the invention provides intelligent preparation equipment for a composite nutritional supplement for pets, and relates to the technical field of blending and mixing equipment. The intelligent preparation equipment for the pet composite nutritional supplement comprises a supplement storage part, a feeding mechanism and a stirring and dispersing mechanism. The motor is installed at the top of the tank cover, the disc box is arranged at the bottom of the stirring rod, the outer film layer is arranged in the notch, micropores are formed in the surface of the outer film layer, a feeding port communicated with an inner cavity of the disc box is formed in the bottom of the disc box, and the feeding mechanism feeds materials into the disc box through the feeding port. The feeding mechanism pre-mixes the feed liquid for the first time. Most feed liquid discharged from the micropores enters the flow guide shell and then is discharged close to the inner side wall of the tank body; and throwing out the material liquid which is pre-mixed for the first time in the tray box to finish the secondary pre-mixing processing of the material liquid. And the rotating disc box synchronously drives the flow guide shell to rotate and stir the feed liquid in the tank body, and premixing operation is performed for three times, so that the blending and mixing efficiency of the feed liquid can be further improved.

The invention discloses a double-target nerve conduction supporting nutritional composition and a preparation method thereof, and belongs to the technical field of nutritional products. The composition is prepared by compounding DHA algal oil, phosphatidylserine, EGCG and B vitamins with xanthoceras sorbifolia bunge oil nervonic acid and magnesium L-threonate which serve as dual-core targets in parts by mass, a'myelin sheath repair + signal transduction acceleration 'dual-target synergistic system is formed, membrane structure maintenance, oxidation resistance, inflammation resistance and neurotransmitter synthesis support are achieved at the same time, and the composition has the advantages of being simple in preparation process, low in cost and easy to popularize and apply. Neural conduction efficiency is systematically improved and instruction-execution latency is shortened. The problems of non-uniform mixing and caking of liquid oil and powder are solved through microencapsulation, the process is mature, the safety is high, and the stability is good. Animal experiments show that the composition can shorten the time of simple reaction by 30.5% (plt, 0.01) and shorten the time of selective reaction by 29.9% (plt, 0.01), has a non-obvious and unexpected technical effect, and is suitable for long-term nutritional supplement of middle-aged and elderly people and stroke convalescent people.

The invention belongs to the field of biochemistry and medicinal chemistry, and particularly relates to a preparation method of a beta-alanine-L-citrulline dipeptide compound or a salt thereof and potential application of the beta-alanine-L-citrulline dipeptide compound or the salt thereof in sports nutrition, cardiovascular disease treatment and medical beauty skin care products and cosmetics. The dipeptide compound shows excellent free radical scavenging activity in an in-vitro anti-oxidation experiment, and the free radical scavenging activity is obviously superior to that of common amino acid. According to the invention, high-purity and high-yield preparation of the dipeptide is realized through optimized solid-phase and liquid-phase synthesis processes, and the preparation method has good industrialization potential. The compound has high oxidation resistance and can be used for developing sports nutrition supplements, cardiovascular treatment drugs and anti-aging functional skin care products.

The invention belongs to the technical field of industrial wastewater treatment, and relates to a wastewater anaerobic treatment system scale prevention and nutrition supplement cooperative treatment method and a wastewater anaerobic treatment system scale prevention and nutrition supplement cooperative treatment system. A long-chain structure of sodium hexametaphosphate can efficiently inhibit formation of calcium carbonate scale through a threshold effect and a lattice distortion effect, and meanwhile, the sodium hexametaphosphate can be slowly hydrolyzed in an anaerobic acid environment, orthophosphate ions are gradually released, and stable and continuous phosphorus source nutrition is provided for anaerobic microorganisms, so that in the anaerobic treatment process of the papermaking wastewater, the phosphorus source content of the papermaking wastewater is increased. And the dual goals of scale prevention and nutrition supplement are achieved.

The application relates to the field of pet anti-aging and antioxidant medicines, in particular to a pet anti-aging and antioxidant special nutrient supplement and a preparation method thereof. The pet anti-aging and antioxidant special nutrient supplement comprises the following components in parts by weight: NMN 25-35 parts, manganese ascorbate 3-5 parts, coenzyme Q10 30-40 parts, hydrolyzed tannin 5-8 parts, Omega-3 fatty acid 180-220 parts, ergothioneine 2-3 parts, L-carnitine 20-40 parts, betaine 3-5 parts and vitamin E 5-8 parts. The various substances in the formula realize the pet anti-aging and antioxidant functions through a multi-pathway synergistic mechanism, which respectively are direct free radical scavenging, construction of an antioxidant defense network, repair of mitochondrial function, improvement of cell energy metabolism efficiency, blockage of inflammation and metabolic disorder and cutting off of an aging associated pathway.

The invention discloses an ecological restoration method for farmland continuous cropping obstacle reduction and a matched planting system, and belongs to the technical field of agricultural ecological restoration. According to the invention, through precise diagnosis, targeted repair and cooperative regulation, continuous cropping obstacles are efficiently reduced; in the diagnosis stage, multi-dimensional detection and farmland historical data are integrated, traditional diagnosis limitation is broken through, and a scientific basis is provided for restoration; in the remediation process, the differentiated degradation improvement scheme optimizes the soil environment in an oriented mode, the beneficial microbial agent reconstructs micro-ecology, echelon nutrient supplementation achieves accurate matching of supply and demand, and the core problems of soil toxic accumulation, physical and chemical deterioration, nutrient imbalance and the like are solved. Meanwhile, the full-process monitoring and secondary remediation mechanism guarantee effect is stable, the method is suitable for various farmland scenes, soil fertility and micro-ecology are improved, crop yield and quality are improved, obstacle recurrence is inhibited from the source, resource waste is avoided, ecological and economic values are achieved, and the method is suitable for wide continuous cropping farmland remediation and promotion of sustainable development of a farmland ecological system.

The invention provides a solid waste-lunar soil synergistic improvement and crop cultivation method based on earthworm biotransformation, which comprises the following steps: drying, sterilizing and crushing organic solid wastes generated by a biological regenerative life support system (BLSS), mixing with water, performing ultrasonic extraction, and separating to obtain a nutrient solution and extraction residues; mixing the residues with lunar soil in proportion, inoculating earthworms, and performing aerobic co-fermentation to obtain biological improved lunar soil; finally, the lunar soil is directly used for crop cultivation, and the leach liquor is used as nutritional supplement. According to the method, the biotransformation effect of the earthworms is utilized, solid waste recycling and lunar soil structure function improvement are synchronously achieved, solid waste-lunar soil-crop closed-loop substance circulation is formed, and the method has the outstanding advantages that resource utilization in the system is efficient, the improvement effect is synergistic and lasting, and the extraterrestrial applicability is high.

The present invention provides a rice planting device and a method for using the same, which belongs to the technical field of rice planting. The device comprises a pool body, wherein a plurality of rice supply components are arranged in the pool body, wherein the rice supply components comprise: supply rings, which are horizontally and equidistantly arranged in the pool body, are annular in shape, and are open at the top and bottom, and contain a supply material channel; a plurality of extension tubes are equidistantly arranged in annular shapes on the inner wall thereof, and the extension tubes are connected to the supply material channel; a delivery tube, which is connected between two adjacent supply rings and comprises a solid delivery channel and a liquid delivery channel. The present invention adopts a method of cultivating a single rice in a single supply ring, and realizes the multi-directional nutrient supplementation of the roots of the rice by using the inclined extension tubes. Compared with the diffusion-based supplementation method in the prior art, the present invention can accelerate the absorption of nutrients by the roots of the rice. In addition, by improving the structure of the supply ring, three types of supplementation can be realized: solid nutrients, liquid nutrients, and mixed nutrients.

Systems and methods for immobilizing carbon dioxide by fermentation are provided. More specifically, the present disclosure includes fermenting carbon dioxide to methane by methanogenic archaea and producing a single cell protein nutritional supplement. The present disclosure also provides integration of methanogenic fermentation with other methods to achieve improved carbon efficiency.

The embodiment of the invention discloses a self-emulsifying coenzyme Q10 based on EPA fish oil as well as a preparation method and application thereof, relates to the technical field of nutritional supplements and health-care products, and aims to solve the technical problems of poor solubility, low content and low bioavailability of the existing coenzyme Q10. The preparation method of the self-emulsifying coenzyme Q10 based on EPA fish oil comprises the following steps: dissolving 10-45 parts by weight of coenzyme Q10 in 10-30 parts by weight of an oil phase, and fully stirring to obtain a coenzyme Q10 oil solution; and adding 10-50 parts by weight of a surfactant and 2-35 parts by weight of a cosurfactant into the coenzyme Q10 oil solution, fully stirring, and cooling to room temperature to obtain the self-emulsifying coenzyme Q10 based on EPA fish oil.

The present invention discloses a method for planting Setaria viridis in the arid areas of Northwest China. The method belongs to the field of agricultural planting. The method comprises the following steps: planting in an area below 1800m above sea level to increase the seed setting rate and maturity; selecting a deep and flat soil layer, and adopting measures such as applying base fertilizer and irrigating before sowing to accelerate the emergence of seedlings and improve the survival rate; screening seeds by water sorting to improve the seed purity and germination rate; sowing in an area with an air temperature of above 20°C and a soil moisture content of 30% to 40% after irrigating for 5 days to increase the emergence rate of Setaria viridis; adopting a fixed and quantitative drip irrigation and topdressing to achieve water-saving and efficient irrigation and nutrient supplementation; and timely mowing and harvesting according to the growth characteristics of the plant to increase the biological yield and seed quality of Setaria viridis. The method improves the production efficiency of Setaria viridis, accelerates the grassland establishment process of Setaria viridis, and provides technical support for ensuring the promotion and utilization of Setaria viridis in the arid areas of Northwest China.

The invention provides a lipid composition, a culture medium and a method for multidirectionally differentiating human induced pluripotent stem cells to three germ layers and application of the lipid composition. The culture medium comprises a basic culture medium as well as a lipid combination, a cell protective agent, an antioxidant, a cell nutrition supplement, a non-essential amino acid supplement, an insulin-transferrin-selenium-ethanolamine supplement, a reducing agent, an anti-apoptosis agent and the like which are added into the basic culture medium, the method sequentially comprises the steps of embryoid body formation, multidirectional differentiation and re-paving and adherent culture. According to the lipid composition, the culture medium and the method, the embryoid body with regular form and high yield can be efficiently and stably formed, so that the differentiation of the induced pluripotent stem cells to the trigerm cells is promoted, and the expression level of the trigerm characteristic markers is remarkably improved. The method shows good repeatability and applicability in different induced pluripotent stem cell lines, and provides a reliable tool for standardized evaluation and downstream application of stem cell multidirectional differentiation potential.

The invention discloses a vegetation nutrition regulation and control sprinkling irrigation method and system for an electromagnetic current affected area of a power transmission line. The method comprises the following steps: constructing an electromagnetic current composite interference simulation environment of the power transmission line and carrying out data monitoring; according to the monitored data, a vegetation growth curve is drawn, and a dynamic deviation point is identified; and performing real-time self-adaptive nutrition intervention based on the dynamic deviation point. According to the method, accurate nutrition supplement is carried out on the vegetation in the composite interference area at the best time, and growth inhibition is effectively restrained.

This invention relates to a biostimulant-based fruit-enlarging fertilizer containing calcium and magnesium nutrients and its preparation method. The fertilizer is a partitioned, water-dispersible composite particle, comprising a porous mineral core and a biostimulant inner loading layer disposed on the inner wall of its pores. A calcium-magnesium double complexing layer, a carboxylate buffer layer, and a phosphorus-potassium outer dispersion layer are sequentially disposed on the outer side of the porous mineral core. The biostimulant inner loading layer includes seaweed oligosaccharides, fish protein oligopeptides, and a potassium humate-chitosan oligosaccharide complex. The calcium-magnesium double complexing layer includes an inner amino acid calcium-magnesium complexing sublayer and an outer hydroxycarboxylic acid calcium-magnesium complexing sublayer. This fruit-enlarging fertilizer is suitable for nutrient supplementation during the fruit enlargement period.

The product disclosed by the invention has the effects of improving anemia and development retardation of infants, and the trial administration result of people shows that the nutritional status of the infants is remarkably improved by providing the complementary nutritional supplement food for the infants with malnutrition at the age of 5 years or below; wherein the height growth rate of children is 52.6%, the body weight growth rate is 68.5%, the hemoglobin (Hb) growth rate is 70.7%, the red blood cell number (RBC) growth rate is 59.1%, and the average red blood cell volume (MCV) growth rate is 54.0%. According to the complementary food nutrition supplement food prepared by adopting a square cone device under nitrogen mediation, through 6-month investigation of an acceleration test (37 DEG C + / -2 DEG C, and relative humidity 75% + / -5%), the content attenuation rate of symbolic nutrients is low, and the product stability is good. The method is low in production cost, simple to operate and wide in application prospect.

The utility model relates to a nanoparticle-based dietary nutrient mix for aquaculture feed use. The nutrient mix comprises 20–50% by weight iron nanoparticles, 20– 40% by weight zinc nanoparticles, 10–35% by weight selenium nanoparticles, and 5–20% by weight copper nanoparticles. The nanoparticles are combined in powdered form to create a multi-element nanoparticle-based dietary nutrient mix suitable for incorporation into aquaculture feeds. When added to feed formulations, the nutrient mix may enhance nutrient delivery and support improved nutritional supplementation resulting to improved growth and feed conversion efficiency in fish.