65results about How to "Will not be deactivated" patented technology

The invention relates to a compound feed of aquaculture animals and particularly relates to a tilapia mossambica compound feed. The invention further relates to a preparation method of the tilapia mossambica compound feed. The tilapia mossambica compound feed is prepared from the following components in parts by mass: 15-25 parts of wheat bran, 10-20 parts of enteromorpha powder, 10-20 parts of kelp powder, 8-16 parts of rice bran, 8-16 parts of cottonseed meal, 8-14 parts of sweet potato flour, 6-10 parts of dried potato powder, 4-8 parts of alfalfa meal, 4-8 parts of agar, 4-8 parts of dried carrot powder, 4-6 parts of shell powder, 4-6 parts of purslane, 2-4 parts of houttuynia cordata, 1-2 parts of mints, 1-2 parts of ginger, 1-2 parts of honey, 2-4 parts of fish oil and 1-3 parts of soybean oil. The tilapia mossambica compound feed has the advantages of low cost and low feed coefficient; and after tilapia mossambica is fed with the feed, the specific growth rate of the tilapia mossambica is high and the survival rate is high.

The invention discloses eco-nutritional compound feed for laying hens at an egg-laying peak and a preparation method of the eco-nutritional compound feed. The eco-nutritional compound feed for the laying hens at the egg-laying peak comprises components in percentage by weight as follows: corn, bean pulp, rice bran, calcium hydrophosphate, rock flour, baking soda, sodium chloride, soybean oil, compound trace elements for the laying hens, compound vitamins for the laying hens, 50% choline chloride, a bacillus coagulans preparation, a fructo-oligosaccharide preparation, an DL-methionine, compound enzyme for the laying hens, phytase, montmorillonite and zeolite powder. The nutritional requirement of the laying hens can be met, the immunity and the anti-stress capacity of the laying hens can be effectively improved, the disease rate is reduced, the egg laying rate is increased, the lasting time of the peak is prolonged, the quality of eggs is improved, the environment of henhouses can be improved, and the eco-nutritional compound feed is a novel laying egg feed product integrating nutrition, the anti-disease property, promotion of a high yield and pollution-free property.

The invention discloses an environment-friendly cold-resistant polyvinyl chloride elastomer composition and a preparation method thereof. The preparation method comprises the following steps: mixing a polyvinyl chloride resin, dialkyl terephthalate, synthetic vegetable oil, polar rubber, nano activated calcium carbonate, a calcium zinc composite stabilizer, a lubricant, an antioxidant and a pigment in a kneader; after the temperature of the mixture reaches 90-100 DEG C, discharging, cooling, and carrying out extrusion granulation on the cooled mixture in a double screw extruder, wherein the Shore hardness of the elastomer composition at -5 DEG C is lower than 80. The elastomer composition has the advantages of excellent low-temperature toughness, high mechanical strength, high thermal aging resistance, environment friendliness, no toxicity, excellent comprehensive properties and the like, and is especially suitable for preparing escalator balance compensation chain sheaths, door / window and vehicle window seals, insulation sheaths of wires and cables and the like.

The invention discloses application of enterobacter aerogenes in the aspect of microbe generation and power generating method. The enterobacter aerogenes can be applied to the aspect of microbe power generation as anode catalyst of microbe fuel battery. The power generating method provided by this invention at the same time includes following steps: constructing microbe fuel battery; preparing enterobacter aerogenes inoculum; preparing anode liquid containing fuel; adding the enterobacter aerogenes inoculum and prepared anode liquid into the anode chamber of the microbe fuel battery; performing power generation detection after static cultivation. The enterobacter aerogenes used in the invention belongs to the facultative anaerobe that is easy to be cultured and will not be deactivated under the existing condition of oxygen. The power generation activity can be maintained with low running cost for a long time by periodically adding culture medium. Meanwhile, the invention has wide fuel utilization range, complete biological oxidation and high electronic coefficient of recovery.

The invention relates to a method for screening a polypeptide fragment with antifreeze activity. The method comprises a step of screening amino acid sequences of natural antifreeze protein, antifreeze protein or antifreeze glycoprotein or properly improving amino acid sequences of natural antifreeze protein, antifreeze protein or antifreeze glycoprotein. The invention further relates to antifreeze polypeptide, a bionic antifreeze surface related to the antifreeze polypeptide, a coating containing the antifreeze polypeptide and a preparation method and application of antifreeze polypeptide. The antifreeze polypeptide inherits antifreeze characteristics of the antifreeze protein, has a simple structure, is easy to synthesize on large scale and to produce in batches and exerts better effects compared with the antifreeze protein when used for preparation of the antifreeze surface.

The invention provides a hydrogen chloride gas purification method which includes the steps: (1) contacting hydrogen chloride gas to be treated with modified mesoporous adsorbents at the temperature ranging from 50 DEG C to 200 DEG C, and removing hydrogen sulfide to obtain hydrogen chloride gas after removing the hydrogen sulfide; (2) performing catalytic oxidation for the hydrogen chloride gas after removing the hydrogen sulfide obtained in the step (1) by catalyst loading manganese zeolite, removing organic matters, and removing water and CO2 by adsorbents to prepare the hydrogen chloride gas. According to the purification method, hydrogen sulfide components in the hydrogen chloride gas are removed by the aid of the modified mesoporous adsorbents, the hydrogen chloride gas after removing the hydrogen sulfide is catalyzed and oxidized by the aid of the catalyst loading the manganese zeolite, the organic matters in the hydrogen chloride gas after removing the hydrogen sulfide are removed, high-purity hydrogen chloride gas can be obtained, the whole purification process is simple to operate, and the purification method is easily and massively applied in industries.

The invention relates to fish feed and particularly relates to odontobutis obscurus compound feed. The invention further relates to a preparation method of the odontobutis obscurus compound feed. The odontobutis obscurus compound feed provided by the invention is prepared from the following components in parts by mass: 20 to 29 parts of fish meal, 6 to 15 parts of clam worms, 5 to 15 parts of coarse rice powder, 5 to 16 parts of sea clam shells, 7 to 16 parts of Chinese yams, 3 to 11 parts of figs, 4 to 13 parts of arrowheads, 4 to 14 parts of taros, 3 to 10 parts of mushrooms, 2 to 9 parts of broccolis, 2 to 11 parts of longan kernels, 3 to 10 parts of isatis roots, 4 to 14 parts of scutellaria baicalensis, 3 to 9 parts of fish oil, 1 to 4 parts of olive oil and 1 to 4 parts of compound multi-vitamin. After the odontobutis obscurus compound feed provided by the invention is used for feeding, the feed coefficient of odontobutis obscurus feed is low, and odontobutis obscurus meat has high content of crude protein, low content of crude fat and high content of flavor amino acids.

The invention discloses a method for producing medium element coated fertilizer by enhancing ammoniated superphosphate through agricultural wastes and application, and belongs to the industrial fieldof agricultural waste recycling and fertilizer production. The medium element coated fertilizer comprises a fertilizer core and a coated layer. The fertilizer core is prepared from ammoniated superphosphate, medium elements, fermented chicken manure, molasses powder, humic acid, amino acids, plant ash and solid binders. The coated layer is prepared from compound fertilizer wrapped oil, plant growth regulators, biological agents and anti-caking agents. The method for producing the medium element coated fertilizer by enhancing the ammoniated superphosphate through the agricultural wastes and application, firstly, can increase utilization of agricultural wastes; secondly, can solve a way out problem of mid low grade phosphate rock in China and increase sale rate of superphosphate. Thirdly, the produced medium element coated fertilizer contains various forms of calcium and magnesium sources, can significantly promote growth of roots and increase leaf length, width and yield of crops. Fourthly, the medium element coated fertilizer has both quick-acting and slow-effect functions, and can obviously increase nutrients usage efficiency.

The invention relates to a liquid crystal nanoparticle precursor microparticle, a self-assembled liquid crystal nanoparticle and preparation methods thereof. The preparation method of the liquid crystal nanoparticle precursor microparticle comprises dissolving an agent in a solvent, adding a molten liquid crystal material and a diluent into the solution, uniformly mixing the solution and drying the solution. The liquid crystal nanoparticle precursor microparticle comprises 0.5-20wt% of the agent and a ratio of the liquid crystal material, the diluent to the solvent is 1: 1-7: 40-150. The liquid crystal nanoparticle precursor particles and water undergo a hydration reaction so that the liquid crystal nanoparticle precursor particles are cracked and self-assembled to form the self-assembled liquid crystal nanoparticles. The liquid crystal nanoparticles are processed to form the liquid crystal nanoparticle precursor precursor microparticle solids so that formation of an unstable liquid crystal nanoparticle dispersed solution is avoided and the traditional method problems of leakage of liquid crystal nanoparticle agents, low encapsulation efficiency and dispersion system instability are solved.

The invention relates to fish feed, in particular to elopichthys bambusa compound feed. The invention also relates to a preparation method of the elopichthys bambusa compound feed. The elopichthys bambusa compound feed comprises the following components in parts by mass: 18 to 27 parts of fish meal, 6 to 15 parts of dried fish, 4 to 18 parts of shrimp head meal, 5 to 16 parts of sweet potato meal, 7 to 19 parts of euphorbia humifusa, 4 to 17 parts of herba polygoni avicularis, 5 to 18 parts of plantago depressa, 4 to 17 parts of geranium strictipes, 3 to 16 parts of wax gourd, 2 to 9 parts of arrowhead, 2 to 13 parts of tricholomagambosum, 3 to 14 parts of pumpkin seed, 4 to 14 parts of semen torreya, 3 to 9 parts of fish oil, 1 to 4 parts of olive oil and 1 to 4 parts of compound Vitamin. After the elopichthys bambusa compound feed provided by the invention is fed, the elopichthys bambusa feed coefficient is low, the crude protein content in the elopichthys bambusa muscle is high, the crude fat content is low, and the flavor amino acid content is high.

The invention provides a blackbone chicken compound feed and further relates to a preparing method of the blackbone chicken compound feed. The blackbone chicken compound feed is prepared from, by mass, 21-29 parts of corn, 5-15 parts of soybean meal, 4-15 parts of squid meal, 5-14 parts of fish meal, 6-17 parts of almond kernels, 3-11 parts of bitter herb, 5-16 parts of allium macrostemon bunge, 5-14 parts of copperleaf herb, 3-10 parts of horseweed herb, 4-15 parts of brasenia schreberi, 3-15 parts of herba taraxaci, 3-10 parts of herba portulacae, 1-6 parts of lysine, 1-5 parts of calcium hydrogen phosphate, 1-4 parts of methionine, 1-4 parts of microelements and 1-3 parts of olive oil. After blackbone chicken are fed with the blackbone chicken compound feed, the feed coefficient of blackbone chicken is low; in blackbone chicken meat, the content of crude protein is high, the content of crude fat is low, and the content of flavor amino acid is high.

The invention relates to a compound feed for aquaculture animals, particularly relates to an epinephelus akaara compound feed, and further relates to a preparation method for the epinephelus akaara compound feed. The epinephelus akaara compound feed disclosed by the invention is composed of the following various components in parts by mass: 20-30 parts of fish meal, 10-18 parts of euphausia superba meal, 10-18 parts of clam worm meal, 6-10 parts of kelp meal, 6-10 parts of red bean meal, 4-8 parts of cottonseed meal, 4-8 parts of sweet potato meal, 4-8 parts of rapeseeds, 4-6 parts of lucerne meal, 2-4 parts of houttuynia cordata, 1-3 parts of dandelion, 1-3 parts of dry ginger powder, 1-2 parts of shell powder, 1-2 parts of compound multivitamins, 2-4 parts of fish oil and 1-3 parts of soybean oil. The epinephelus akaara compound feed disclosed by the invention has the advantages of being low in feed coefficient, high in specific growth rate of bastard halibut after feeding bastard halibut, and high in survival rate.

The invention relates to a method for preparing butyraldehyde from propylene and synthesis gas, and mainly solves the problems that a second reactor has low conversion rate and capacity and a catalyst has short life cycle and high production cost in the prior art. The method comprises the following steps of: a) allowing material flow I containing propylene, synthesis gas and a catalyst to enter a first reactor I, and reacting to obtain vapor phase material flow II on the tower top and liquid phase material flow III on the tower bottom; b) allowing the material flow III to enter a middle separation unit 3, separating to obtain material flow IV containing propylene and butyraldehyde, material flow V containing a catalyst and butyraldehyde, a crude butyraldehyde product material flow VI, and allowing the material flow VI to enter a subsequent process; and c) allowing the material flow II, the material flow IV, the material flow V and make-up synthesis gas to enter a second reactor, and reacting to obtain material flow VII containing butyraldehyde and tail gas 5. The method better solves the problems and can be applied to industrial production of preparing butyraldehyde from propylene and synthesis gas.

The invention relates to fish feed, particularly to compound feed for Spinibarbus hollandi, and further relates to a preparation method of the compound feed for Spinibarbus hollandi. The compound feed for Spinibarbus hollandi comprises components in parts by mass as follows: 19-28 parts of fish meal, 4-16 parts of soy pomace, 5-15 parts of cottonseed cake meal, 5-14 parts of sunflower cakes, 3-9 parts of fish oil, 1-4 parts of olive oil, 1-4 parts of multi-vitamins, 6-17 parts of mallotus roots, 3-11 parts of field thistle herbs, 5-16 parts of belvedere fruits, 5-14 parts of copperleaf herbs, 3-10 parts of Japanese hop herbs, 4-15 parts of trichosanthes fruits, 3-15 parts of Indian abutilon, 3-10 parts of horseweed herbs and 5-14 parts of Chinese holly. After the compound feed for Spinibarbus hollandi is fed, the Spinibarbus hollandi feed coefficient is low, and Spinibarbus hollandi muscles has the high crude protein content, the low crude fat content and the high flavor amino acid content.

The invention discloses an environment-friendly VOCs low-temperature combustion catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing a mesoporouscerium-manganese composite oxide, synthesizing an ionic liquid precursor PyPS, and loading the mesoporous cerium-manganese composite oxide, a cerium-based solid ionic liquid composite carrier and an active component Ru. According to the prepared catalyst, the cerium-zirconium composite oxide with a mesoporous structure and cerium-based solid ionic liquid are used as carriers, precious metal Ru isused as an active component, the cerium-based solid ionic liquid is one of Ce < 0.33 > [PyPS] < 2 > PMo12O40, Ce < 0.66 > [PyPS] PMo12O40 and Ce < 0.33 > [PyPS] HPMo12O40, and the mass fraction of Ruin the catalyst is 2.0-5.0 wt%. The catalyst prepared in the invention can completely catalyze and convert chlorobenzene and trichloroethylene into carbon dioxide, water and HCl at a low temperature,and has high reaction stability.

The invention discloses a synthesis method of isocoumarin compounds. According to the method, benzaldehyde compounds and alkyne compounds are taken as reaction materials, and the isocoumarin compoundsare prepared under the condition of a cobalt catalyst with PEG-400 as a reaction medium. The method has the advantages that the catalysis conditions are novel, the catalyst cost is low, the catalystand the reaction medium PEG-400 can be recycled, the application range of a reaction substrate is wide, the yield is high, and the method is environmentally friendly.

The invention relates to migration type adult Salmo salar mixed feed, and also relates to a preparation method of the migration type adult Salmo salar mixed feed. The migration type adult Salmo salar mixed feed is prepared from the following components in parts by mass: 15 to 25 parts of fish meal, 8 to 18 parts of euphausia superba meal, 8 to 14 parts of dry water earthworm powder, 8 to 12 parts of sargassum thunbergii powder, 8 to 12 parts of Enteromorpha powder, 6 to 10 parts of sunflower seed kernel meal, 6 to 10 parts of cottonseed meal, 4 to 8 parts of Chinese yam powder, 4 to 6 parts of houttuynia cordata, 4 to 6 parts of Malva crispa Linn., 3 to 5 parts of nightshade, 3 to 5 parts of almond powder, 2 to 4 parts of carrot powder, 2 to 4 parts of fish oil, 2 to 4 parts of soya-bean oil, 1 to 3 parts of fresh ginger, 1 to 3 parts of dandelion, 1 to 3 parts of hawthorn, 1 to 3 parts of shell powder and 2 to 4 parts of xanthan gum. The mixed feed is lower in feed coefficient, and can improve the immunity and survival rate of Salmo salar.

The invention relates to fish feed and particularly relates to compound feed for channa maculate; the invention further relates to a preparation method of the compound feed for the channa maculate. The compound feed for the channa maculate comprises the following components in parts by mass: 20 to 30 parts of fish meal, 8 to 15 parts of corn flour, 7 to 14 parts of shrimp meal, 5 to 9 parts of dried blood, 6 to 10 parts of semen raphani, 3 to 7 parts of medicated leaven, 3 to 7 parts of pumpkin seeds, 2 to 5 parts of eclipta, 2 to 6 parts of ganoderma lucidum, 1 to 5 parts of three-colored amaranth, 1 to 4 parts of citrus chirocarpus, 3 to 8 parts of spora lygodii, 1 to4 parts of poria cocos, 2 to 6 parts of fish oil, 1 to 4 parts of olive oil and 1 to 4 parts of calcium hydrophosphate, after using the compound feed for the channa maculate provided by the invention, the feed coefficient of the channa maculate is low, and in the muscle of the channa maculate, the crude protein content is high, the content of crude fat is low, and the flavor amino acid content is high.

The invention discloses a method for extracting ceramide from pineapples and application, and relates to the technical field of biological active substance preparation and application. The method comprises the steps that pineapple leaves and pineapple peel of immature pineapples are selected, the process routes for pineapple picking and preprocessing, freezing, drying, smashing, extracting, concentrating, extracting, separating, column chromatography isolation, gradient elution and re-crystallization are designed, the process design is reasonable, the toxicity of adopted solvents is small, noharsh condition is adopted, a high-purity N-fatty acyl-sphingol substance can be obtained, on the basis of NMR, MS and HPLC detection, the detection result displays that the N-fatty acyl-sphingol substance is 1-O-beta-D-glucose-N-docosanedioic acyl-hexadecanoic-4,10(E,E)-diene psychosine, the purity reaches 98.7%, the yield is increased to 0.13% from 0.0004%, and the method is suitable for large-scale technological production.

The invention relates to fish feed, in particular to compound feed for Lateolabrax japonicus juveniles and a preparing method thereof. The compound feed comprises, by mass, 10 to 20 parts of chicken powder, 8 to 14 parts of dry clamworm powder, 6 to 12 parts of dry red worm powder, 6 to 10 parts of wheat bran, 6 to 10 parts of cottonseed meal, 4 to 8 parts of dry clam visceral mass, 4 to 8 parts of rapeseed, 4 to 6 parts of heartleaf houttuynia herb, 2 to 4 parts of fish oil, 1 to 3 parts of olive oil, 1 to 3 parts of welsh-onion stalk, 2 to 4 parts of dry carrot meal, 1 to 3 parts of silkworm pupa and 1 to 3 parts of shell powder. The compound feed is provided according to the energy metabolism mode and nutrition needs of the Lateolabrax japonicus juveniles so as to fully replace the fish meal, and the Lateolabrax japonicus juveniles fed with the compound feed has high survival rate, low feed coefficient and specific growth rate.

The invention relates to a fish feed, and especially relates to a low-cost plecoglossus altivelis compound feed. The invention also relates to a preparation method of the compound feed. The compound feed is composed of the following components in parts by weight: 10 to 20 parts of soybean meal, 10 to 20 parts of peanut meal, 10 to 20 parts of cotton meal, 8 to 16 parts of strong flour, 8 to 14 parts of rice bran, 6 to 10 parts of caloglossa leprieurii, 5 to 8 parts of dry clam worm powder, 5 to 8 parts of ulva powder, 4 to 8 parts of mung bean powder, 4 to 6 parts of pea powder, 4 to 6 parts of dry carrot powder, 4 to 6 parts of potato powder, 3 to 5 parts of cordate houttuynia, 3 to 5 parts of purslane, 2 to 4 parts of rhizoma kaempferiae, 1 to 3 parts of vallisneria natans, 1 to 3 parts of saxifrage, 2 to 4 parts of shell powder, 3 to 5 parts of fish oil, and 2 to 4 parts of xanthan gum. The cost of the compound feed is low, the raw materials are green and environment-friendly, the compound is attractive to plecoglossus altivelis, and the living rate is high.

The invention relates to an aquatic culture animal feed, in particular to an Epinephelus akaara wintering feed. The invention also relates to a preparation method of the Epinephelus akaara wintering feed. The Epinephelus akaara wintering feed is composed of the following components by mass: 15-25 parts of fish meal, 10-20 parts of pig bone meal, 10-18 parts of earthworm powder, 10-16 parts of rice bran, 8-16 parts of peanut meal, 8-14 parts of sunflower seed kernel meal, 8-14 parts of soybean meal, 6-10 parts of black bean powder, 4-8 parts of potato powder, 4-6 parts of Gelidium amansii, 4-6 parts of Capsella bursa-pastoris, 2-4 parts of houttuynia cordata, 1-3 parts of Radix Sophorae Tonkinensis, 1-2 parts of shell powder 2, 1-2 parts of compound vitamin, 2-4 parts of honey, 2-4 parts of fish oil, 1-3 parts of soybean oil, and 1-3 parts of olive oil. The Epinephelus akaara wintering feed provided by the invention has the advantages of low feed coefficient and ability to improve the cold resistant ability of Epinephelus akaara, and the Epinephelus akaara can have high survival rate after being fed with the feed.

The invention discloses a catalyst for low-temperature catalytic oxidation of VOCs and a preparation method thereof. The preparation method comprises the following steps: preparing a mesoporous manganese-zirconium composite oxide, synthesizing an ionic liquid precursor NMMPS, preparing a mesoporous manganese-zirconium composite oxide loaded zirconium-based solid ionic liquid composite carrier, andloading an active component Ru to obtain the catalyst. According to the catalyst, the manganese-zirconium composite oxide with a mesoporous structure is combined with zirconium-based solid ionic liquid to serve as a carrier, precious metal Ru is used as an active component, and the zirconium-based solid ionic liquid is one of Zr < 0.25 > [NMMPS] < 2 > PW < 12 > O < 40 >, Zr < 0.5 > [NMMPS] < 12 >O < 40 > and Zr < 0.25 > [NMMPS] < H > PW < 12 > O < 40 >. The catalyst can completely catalyze and convert chlorobenzene and trichloroethylene into carbon dioxide, water and HCl under a relatively low temperature condition, and has relatively high reaction stability.

The invention relates to a new method for catalyzing oxidation of methacrolein to methacrylic acid by a gas-solid reaction. The method is characterized in that a catalyst used in the method is a carbon catalyst, and the catalyst comprises activated carbon, graphite, carbon nanotubes, graphene oxide, reduced graphene oxide, graphene and nano diamond; the carbon catalyst is modified by acid washingor solvent washing treatment or doping with nitrogen, sulfur, phosphorus, boron, oxygen, molybdenum, cobalt, copper, iron and zinc elements. When air is an oxidant, the conversion rate of methacroleincan reach 68% or above, and the selectivity of methacrylic acid can reach 92% or above.

The invention discloses a fragrant disinfectant solution, which comprises the following components of: by weight, 5-10 parts of citric acid, 12-20 parts of essence, 10-15 parts of hydrogen peroxide, 5-10 parts of parachlormetaxylenol, 5-10 parts of a compatibilizer, 12-20 parts of distilled water and 2-6 parts of a surfactant. The fragrant disinfectant solution provided by the invention applies to cleaning of facial skin, has a fragrant smell, possesses a good cleaning and disinfection effect and causes no damage on facial skin or subcutaneous tissue.

The invention discloses a sulfur-resistant VOCs low-temperature catalytic combustion catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing a mesoporous iron-zirconium composite oxide, preparing an ionic liquid precursor H5PMo10V2O40, synthesizing an ionic liquid precursor TEAPS, preparing a mesoporous iron-zirconium composite oxide loaded iron-based solid ionic liquid composite carrier, and loading an active component Ru to obtain the catalyst. According to the catalyst, mesoporous iron-zirconium composite oxide with the surface coated withiron-based solid ionic liquid serves as a carrier, Ru serves as an active component, the active component is loaded through a deposition precipitation method, and the mass fraction of Ru in the catalyst ranges from 2.0 wt% to 5.0 wt%. The catalyst prepared in the invention can completely catalyze and convert chlorobenzene and trichloroethylene into carbon dioxide, water and HCl at a low temperature, and has high reaction stability.

The invention relates to the field of xylonic acid production, and especially relates to a synthetic method for xylonic acid. The xylonic acid is obtained by using a d-xylose solution as a reaction liquid and activated carbon as a catalyst, introducing oxygen, adjusting the pH of the reaction liquid to 8-10, performing reaction, and performing separation and purification after the reaction is finished. According to the synthetic method for the xylonic acid provided in the invention, xylose is taken as a raw material, the activated carbon is taken as the catalyst, when the pH is 8-10, oxidation is conducted by the oxygen, and separation and purification are conducted after the oxidation is finished, so that the xylonic acid is obtained. According to the invention, the activated carbon is used as the catalyst of the synthetic method, so that the catalyst costs are lower than that of conventional heavy metals and the catalyst cannot be inactivated, and the catalyst can be used repeatedly; the speed of an oxidation reaction by using the oxygen is rapid, and the efficiency is high, so that the production costs are effectively reduced; and the purity of the xylonic acid crystal is equal to or more than 99%, the product quality is improved, resources are saved, and the effects are improved.

The invention relates to a fish feed, in particular to a mixed feed special for cynoglossus semilaevis larvae and a preparation method of the mixed feed special for the cynoglossus semilaevis larvae. The mixed feed special for the cynoglossus semilaevis larvae comprises the following ingredients including, by mass, 30-40 parts of fish meal, 10-20 parts of dried artemia meal, 8-14 parts of dried clam worm meal, 8-14 parts of dried red nematode meal, 6-10 parts of kelp meal, 4-8 parts of corn meal, 4-8 parts of vegetable seeds, 4-6 parts of dried heartleaf houttuynia herb, 2-4 parts of cooked yolk, 2-4 parts of fish oil, 2-4 parts of dried carrot power and 1-3 parts of dried hawthorn fruit powder. The mixed feed special for the cynoglossus semilaevis larvae is provided according to the energy metabolism mode and nutritional need of the cynoglossus semilaevis larvae, can completely replace a biological bait, and the cynoglossus semilaevis larvae fed with the mixed feed is high in survival rate, low in feeding coefficient and high in specific growth rate.

The invention relates to a feed, and in particular to a wild goose mixed feed as well as a preparation method of the wild goose mixed feed. The wild goose mixed feed comprises the following components in parts by mass: 21-29 parts of corn, 5-15 parts of bean pulp, 4-15 parts of peameal, 5-14 parts of fish meal, 6-17 parts of cornstalk, 3-11 parts of bitter herb, 5-16 parts of allium macrostemon, 5-14 parts of sedum aizoon, 3-10 parts of cedrela sinensis, 4-15 parts of water shield, 3-15 parts of dandelion, 3-10 parts of portulaca oleracea, 1-6 parts of lysine, 1-5 parts of calcium hydrophosphate, 1-4 parts of methionine and 1-4 parts of trace elements. The feed coefficient of the wild geese fed with the wild goose mixed feed provided by the invention is low, and the wild goose muscle is high in crude protein content, low in crude fat content and high in flavor amino acid content.