570 results about "Sodium Phytate" patented technology

The invention provides a specialized organic / inorganic composite biological medicine fertilizer for rape, and a preparation method thereof. The weight parts of composition raw materials are as follows: 60-80 parts of greenhouse garbage, 6-7 parts of pericarp, 6-8 parts of cotton straws, 8-10 parts of pig manure, 10-12 parts of plant ash, 10-12 parts of sugar residue, 20-25 parts of sodium humate, 10-11 parts of diammonium phosphate, 12-14 parts of potassium sulfate, 12-14 parts of urea, 12-14 parts of ammonium bicarbonate, 14-16 parts of medical stone, 12-14 parts of animal hair, 1-2 parts of EM strains, 20-22 parts of modified bentonite, 8-10 parts of celastrus orbiculatus, 3-4 parts of neem, 4-6 parts of monkshood, 3-5 parts of fiveleaf akebia fruit, 0.7-1.2 parts of boric acid, 1-1.2 parts of manganese sulfate, 2-4 parts of copper sulfate, 4-6 parts of eucalyptus oil and a proper amount of paraffin. A green organic fertilizer is obtained by mixing a plurality of organic wastes and fermenting the mixture, thereby reducing environment pollutions. The specialized organic / inorganic composite biological medicine fertilizer for the rape has the advantages of comprehensive nutrition and enhanced sterilizing effects by mixing the fermented organic materials and inorganic fertilizer and adding medicine juice of the Chinese herbal medicine having insectidical functions. With the application of the fertilizer, rape quality can be effectively increased; and the rape has green leaves, bright flower, prolonged flowering period, full seeds and increased output.

The invention discloses a method for preparing a freeze-drying crisp fruit and vegetable piece, which includes the following steps: blanching raw materials for killing enzyme; preparing a color protection liquid using citric acid concentration, sodium isoascorbate concentration, or cysteine hydrochloride concentration, sodium phytate concentration and embedding medium, wherein, the ratio between the color protection liquid and the slice liquid material is 0.25-1:1; slowly freezing fruit paste with 4-7 mm thickness below a eutectic point at minus 30 DEG C. for one hour; placing the fruit paste on a separator plate of a vacuum lyophilizer after the machine is precooled to a cold trap minus 50 DEG C. with 30 Pa vacuum degree and 40 DEG C. separator plate temperature; heating and drying by programs, wherein, 3-5 DEG C. rises every hour when the temperature is below 10 DEG C.; keeping temperature at 10 DEG C. for 1 hour; heating continuously for rising 5-7 DEG C. every hour; keeping temperature for 2 hours at 40 DEG C.; obtaining the crisp fruit and vegetable pieces with water content below 7% after refrigeration; slicing and packing products in an independent drying room with air humidity 40-50%. The invention has a distinct fruit and vegetable original flavour with larger market prospect.

The invention discloses architectural ceramic prepared from industrial solid waste through a dry method and a process for preparing the architectural ceramic. The architectural ceramic comprises the following components in percentage by mass: 30-60% of solid waste, 40-70% of ceramic raw material and 1-3% of ceramic additive, wherein the ceramic raw material is selected from one or a composition of multiple of clay raw material, feldspar raw material or talc, and the ceramic additive is one or a combination of multiple of sodium tripolyphosphate, sodium silicate, ammonium chloride, ammonium citrate, sodium humate, sodium lignin sulfonate sodium, ethylenediamine tetraacetic acid disodium and edetic acid. After being pretreated, the granules of the solid waste are fine and are mixed evenly in a dry mixing manner and a spray drying manner and are directly used for pressing of green bricks or stored in a bin for standby, so that the ball milling energy consumption and the peptization cost are reduced, the humidification pelleting and fluidized bed drying procedures are omitted, the formula can be quickly adjusted according to the functional characteristics of the architectural ceramic, the process is simple and convenient to control, and the architectural ceramic has such good properties as heat preservation, thermal insulation and high strength.

The invention discloses a method for preparing cauliflower nano gold-silver alloy with a surface-enhanced Raman scattering activity, which comprises: mixing 0.001mol / L solution of silver nitrate and 0.001mol / L solution of sodium phytate in a volume ratio of 30:1; heating the mixed solution till the mixed solution boils and keeping the temperature between 90 and 100 DEG C; adding 1 percent solution of trisodium citrate in an amount which is one fiftieth of the volume of the solution of silver nitrate to perform an reaction at 90 to 100 DEG C for 3 hours to prepare nano silver cluster dispersion stabilized by phytic acid; and transferring 12 to 17 milliliters of dispersion into a 25 milliliter beaker, heating the solution to 45 to 65 DEG C with stirring, slowing dripping 1.5 to 2.4 millimeters of 0.01 mol / L solution of chloroauric acid and stirring the mixed solution for 25 to 35 minutes to obtain a sample. The obtained cauliflower nano gold-silver alloy nanoparticles can keep stable for more than 6 months and has high signal repeatability and a surface-enhanced Raman effect. The preparation method is simple and low in cost.

The invention discloses a flame-retardant pure silk and a preparation method of the flame-retardant pure silk. The preparation method comprises the following steps of: firstly, soaking the pure silk into a low molecular weight chitosan solution, washing by using deionized water, drying the washed pure silk, then soaking the dried pure silk into a sodium phytate solution, then taking the pure silk out, washing the pure silk with deionized water and then drying; and repeating the steps till the flame-retardant pure silk is obtained. A flame retardant comes from natural animals and plants, is nontoxic and belongs to an ecological type flame-retardant finishing agent; the flame-retardant pure silk is prepared by adopting an electrostatic self-assembling technology at room temperature, the preparation method is simple to operate and accords with an environment-friendly requirement, energy is saved and emission is reduced; and the prepared flame-retardant pure silk has a favorable flame-retardant effect.

The invention discloses a rabbit dung-Chinese herbal medicine organic fertilizer which is prepared from the following raw materials in parts by weight: 60-80 parts of rabbit dung, 5-8 parts of Chinese herbal medicine, 10-20 parts of crop straw powder, 10-20 parts of plant ash, 10-20 parts of bagasse, 30-40 parts of sodium humate, 10-20 parts of nano-carbon and 10-15 parts of palygorskite. The rabbit dung-Chinese herbal medicine organic fertilizer is prepared by the steps of: with rabbit dung as a main organic component, fermenting, drying and crushing; and then mixing the treated rabbit dung with Chinese herbal medicine extracts, sodium humate, nano-carbon and palygorskite, pelleting and finally drying. After the rabbit dung-Chinese herbal medicine organic fertilizer disclosed by the invention is applied, the physical and chemical properties of soil can be improved, the nutrient absorption of crops can be promoted, crop plants can thrive, the yield of the crops can be improved, the product quality can be improved, the loss of the fertilizer in the soil can be reduced, the release of the nutrients in the fertilizer can be controlled, the utilization rate of the fertilizer can be improved, the purposes of high yield and high quality can be reached, and the occurrence of diseases and insect pests of the crops can be further reduced.

The present invention discloses a fully soluble aquatic fertilizer and its preparation method and pertains to aquaculture field. The aquatic fertilizer of the present invention comprises monoammonium phosphate 15-45%, sodium humate 12-20%, sodium silicate 5-12%, compound premix 8-13%, and urea 30-40%. The compound premix is mainly composed of trace elements. Firstly, the aquatic fertilizer of the present invention has comprehensive nutrition and balanced formula; secondly, the present invention has high dissolution speed and utilization rate; thirdly, the present invention features simple use method, small use amount, sufficient content, long lasting time and low cost; fourthly, the present invention can not only promote the mass propagation of food organisms of aquatic animals but also specifically cultivate helpful algae, improve water quality, increase dissolved oxygen, effectively avoid pond poisoning, reduce diseases, lower feed coefficient and enhance fish immunity; the present invention is green and environment-friendly, and has stable quality and no harm on human and animal and no pollution on environment.

The present invention relates to a Pu'er tea toothpaste and a preparation method thereof. The Pu'er tea toothpaste is characterized by comprising a Pu'er tea extract, which is obtained by steps of low temperature pulverization, ultrasonic extraction, pressure filtration, separation and concentration. The Pu'er tea extract is combined with food-grade auxiliary materials comprising glycerin, sorbitol, PEG400, tetrasodium pyrophosphate, sodium dihydrogen phosphate, sodium phytate, sodium carboxymethyl cellulose, xanthan gum, sodium lauryl sulfate, calcium phosphate dihydrate, hydrated silica and essence to prepare the Pu'er tea toothpaste. The method fundamentally eliminates quality issues such as spoilage, degeneration, color changing, flavor changing and chemical safety of the tea toothpaste, and effectively prolongs a shelf period of the tea toothpaste. The tea toothpaste has multiple special efficacies, such as removing scale, decomposing residual smoke stains, tea stains and coffee stains in slits between the teeth, reducing plaque, preventing breeding of harmful bacteria, disinfecting, diminishing inflammation, stopping bleeding, eliminating odor, promoting the secretion of saliva, moisturizing mouth, recovering taste buds, improving taste sense, and enabling a user to taste better flavor of food, and is a natural healthful tea toothpaste.

The invention relates to gum-protecting whitening toothpaste. The gum-protecting whitening toothpaste is prepared from the following components: sorbitol, xylitol, sodium phytate, brilliant blue pigment, sodium lauroyl sarcosine, ethylene diamine tetraacetic acid (EDTA) disodium, plant chitosan, trehalose, sodium saccharin, sodium pyrophosphate, glycerol, sodium hyaluronate, xanthan gum, hydroxyethyl cellulose, polyvinyl pyrrolidone (PVP) cross-linking agent, shell powder, silicon dioxide (friction type), silicon dioxide (thickening type), zinc citrate, lysozyme, pawpaw extract, vitamin E, peppermint essence, silica (whitening particles) and pure water. The components coordinate with one another, so that the effects of protecting gum and whitening teeth are achieved.

The invention relates to a fluid loss control agent for drilling fluid, which is prepared through reacting natural humic acid with sodium-hydroxide to obtain humic sodium salts, then carrying out reduction copolymerization with sulfonated asphalt, hydroxyethyl cellulose, polyacrylamide, water-soluble silicon oil AND methyl aldehyde.

The invention discloses a novel compound microbial agent and relates to the technical field of agriculture microbes. 10 parts to 20 parts of bacillus subtilis, 20 parts to 30 parts of bacillus mucilaginosus and 50 parts to 70 pats of bacillus licheniformis serve as raw materials; and 5 parts to 15 parts of sodium humate, 30 parts to 50 parts of bran, 30 parts to 50 parts of rice bran and 5 parts to 15 parts of seaweed serve as raw materials for culture media. A preparation method of the novel compound microbial agent includes mixing and smashing the bacillus and maintaining the moisture to be in 30% to obtain the novel compound microbial agent. Bacterial manure prepared by mixing the novel compound microbial agent with nitrogen, phosphorus and potassium according to an appropriate ratio can effectively improve the granular structure of the soil and has a stimulation effect on the growth of crops, and the yield-increasing effect is apparent.

The invention mainly relates to a natural plant feed additive for animals in the animal husbandry and veterinary field, and particularly relates to a formula and a production process of the additive. A natural plant feed additive for livestock is mainly characterized in that the additive comprises the following raw materials by weight: 23-27% of radix astragali, 13-17% of angelica, 8-12% of salvia, 13-17% of purslane, 10-14% of garden burnet, 6-10% of scutellaria, 13-17% of sodium humate. Green and safe special feed for livestock with different breeds and different growth phases is formed; present situations of high medicinal residues and poor flavor caused by the abuse of various antibiotics and chemical additives in current livestock feeding are changed; and the invention provides technical support and a development direction for the sustainable development of animal husbandry in our country.

The invention relates to biological complex enzyme toothpaste and a preparation method thereof. The toothpaste is prepared from the following components by weight percentage: 5-10% of sorbierite, 15-20% of hydrous silica, 10-20% of aluminum hydroxide, 10-20% of glycerin, 2-3% of sodium lauroyl sarcosine, 1-1.3% of flavor, 0.8-1.2% of cellulose gum, 0.3-0.6% of carrageenin, 0.3-0.5% of droxyethylcellulose, 0.5-1.2% of sodium phytate, 0.15-0.3% of saccharin sodium, 0.3-0.5% of strontium chloride, 0.1-0.3% of trisodium phosphate, 0.00003-0.00008% of staphylococcus lysozyme, 0.00005-0.00015% of muramidase, 0.00001-0.00004% of proteolytic enzyme, 0.00002-0.00005% of glycosidic hydrolase, 0.00002-0.00005% of peroxydase, 0.08-0.15% of borneol, 0.1-0.15% of borax, 0.08-0.1% of vermilion, 0.1-0.15% of natrii sulfas exsiccatus, 0.05-0.1% of triclosan, 0.1-0.4% of allantoin, and the balance of water. The total weight percentage of the components is 100%. The biological complex enzyme toothpaste has complete function.

The invention belongs to the field of daily necessities and in particular discloses liquid toothpaste and a preparation method thereof. The liquid toothpaste is prepared from xylitol, vitamin C, cetylpyridinium chloride, sodium fluoride, natural betaine, sodium phytate, traditional Chinese medicine extracting solution, lauryl sodium sulphate, sodium lauroyl sarcosine, glycerol, sorbitol, silica, essence, a freshener, antiseptic, a sweetening agent, edible gum and water. The toothpaste is in a liquid state, so that active ingredients in the liquid toothpaste product can smoothly reach each surface of an oral cavity, quickly go deep into gaps of teeth and cover the whole teeth, the traditional Chinese medicinal extracting solution and cetylpyridinium chloride in the formula can be matched with other components, sterilization can be effectively carried out, bacteria growth can be inhibited, dental plaque can be eliminated, caries can be prevented, gingival and periodontal problems such as gingival bleeding, gingival pain, gingival swelling and ozostomia can be effectively solved, the oral cavity is protected, and teeth are whitened and healthy.

The invention provides a special organic-inorganic compound biological medicine fertilizer for sweet potatoes, which comprises the following raw materials in parts by weight: 50-60 parts of sweet potato vines, 10-20 parts of deciduous leaves, 10-12 parts of bone meal, 15-17 parts of poultry droppings, 18-22 parts of sodium humate, 14-16 parts of chicken feathers, 10-12 parts of monoammonium phosphate, 18-20 parts of concentrated superphosphate, 10-12 parts of ammonium bicarbonate, 8-10 parts of potassium sulphate, 10-16 parts of silkworm faeces, 8-10 parts of sepiolite, 2-3 parts of cnidium fruit, 2-3 parts of aloe, 3-4 parts of buckeye, 2-3 parts of pharbitis seed, 4-6 parts of cinnamomum burmannii, 0.02-0.04 part of sodium molybdate, 1.5-2.0 parts of magnesium sulfate, 3-5 parts of potassium chloride, 0.2-0.3 part of ferrous sulfate and 1-2 parts of EM(effective microorganisms) strain. After various organic wastes are mixed and fermented to produce the green organic fertilizer, the environmental pollution is reduced, the fermented organic matter is mixed with the inorganic fertilizer, the Chinese herbal medicine juice (gauleheria) with insecticide properties is added, the nutrition is more comprehensive, and the bactericidal effect is increased; the fertilizer has the advantages of obviously improved fertilizer utilization ratio, single time of application, effective slow release, reduced fertilization frequency, reduced fertilizer cost and improved economic benefit; and after the application of the fertilizer, the quality of the sweet potatoes can be effectively improved, and the yield is can be improved.

The invention relates to a remediation conditioner for chromium-contaminated soil and a remediation method adopting the remediation conditioner. The remediation conditioner comprises raw materials in percentage by weight as follows: 5%-25% of ferrous sulfate, 5%-25% of calcium polysulphide, 5%-30% of humic acid resin, 1%-2% of cow dung and 1%-25% of fungus residues, wherein the humic acid resin is prepared from sulfonated sodium humate, phenol-formaldehyde resin and calcium acetate through activation after crosslinking and curing. The remediation conditioner adopts a simple formula, is mainly used for remediating soil by removing chromium, has high chromium VI removal rate, can increase content of residual-form chromium, can improve the soil quality and improves the sustainable utilization capacity of the soil.

The invention relates to the field of agriculture and chemical industry, in particular to a disease-resistant plant fertilizer. The plant fertilizer is characterized by being prepared from the following raw materials in parts by weight: mashed garlic, plant ash, root bark of periploca sepeium, biochemical fulvic acid, carbendazim, waste defective tobacco leaves, radix sophorae flavescentis, distilled grains, a microbial agent, crofton weed, urea, calcium superphosphate, potassium carbonate, ammonium nitrate, borax, sodium humate, sodium selenite, urea phosphate, expanded perlite powder and tap water. The invention further discloses a preparation method of the plant fertilizer. The plant fertilizer is reasonable in formula, contains various nutrients and antibacterial components, and is suitable for fruits, vegetables and nursery stocks; by the plant fertilizer, the soil fertility can be effectively enhanced, the soil hardening phenomena can be reduced, viruses can be effectively resisted, the morbidity can be reduced, and the yield can be increased.

The invention discloses a preservation method of fish, which comprises the following steps: (1) cleaning sundries and mucilage adherent to a fish surface, and draining off at the temperature of 0-3 DEG C; (2) immerging a drained fish body into preservative to soak for 10-30 min, wherein the preservative is composed of the following ingredients in weight percent: 5-8% of trehalose, 0.1-0.5% of sodium phytate, 5-10% of pulullan, 0.2-0.5% of chitosan, 3-5% of EDTA-Na2, and the balance of purple perilla water; (3) conducting cold wind drying on the soaked fish body surface; (4) uniformly spraying CaCl2 solution with the mass concentration of 1-10% on the fish body with the dried surface and conducting preservation at normal temperature. The method conducts preservation on the fish at normal temperature, so that the fish can be allowed to maintain the same color, flavor, and taste as fresh and alive fish in 60 days, and the preservation time of the fish at normal temperature is greatly prolonged; the method has simple processing step, and low cost.

The invention relates to a wastewater treating agent, a preparation method and a wastewater treatment method. According to the oil paint wastewater treating agent, the formula comprising a corrosion inhibitor, a scale inhibitor, a sterilizing agent and a flocculating agent is adjusted, and an auxiliary chemical is added, so that the wastewater treatment process is easy to control, the treatment period is short, and the treatment effect is remarkably improved; the wastewater treating agent comprises the corrosion inhibitor, the scale inhibitor, the sterilizing agent, the flocculating agent and the auxiliary chemical; the corrosion inhibitor comprises sodium polyphosphate, calcium gluconate, alkyl epoxy sodium carboxylate, potassium iodide and gelatin; the scale inhibitor comprises trisodium phosphate, tannin, sodium humate, sulfoacid copolymers and TH-0100 type reverse osmosis scale inhibitors; the sterilizing agent comprises potassium permanganate, didodecyl dimethyl dibenzyltinoammonium chloride and nano-zinc oxide; the flocculating agent comprises lignin, chitosan, quaternary amine type cationic starch, polyaluminum chloride , polymeric ferric sulfate and diatomite earth; the auxiliary chemical comprises polyaspartic acid and alky epoxy carboxylate. An experiment result proves that the wastewater treating agent has an excellent effect.

The invention belongs to the technical field of material chemistry and particularly relates to a preparation method for gold-silver alloy nanometer particles. The preparation method comprises the steps as follows: mixing a silver nitrate solution with a chloroauric acid solution, stirring and heating; adding a sodium phytate solution and continuing to stir and heat; adding a trisodium citrate solution for reaction to prepare a gold-silver alloy nanometer sol; and cooling and refrigerating for storage. The molar ratio of the silver nitrate to the chloroauric acid to the sodium phytate is 1 to 0.25-3.5 to 1-4, and the silver nitrate, the chloroauric acid and the sodium phytate are stirred and heated to be 80-90 DEG C. The volume of the trisodium citrate is 0.8-2.6% of that of the silver nitrate solution. The preparation process is simple, convenient and short in time consumption; the sodium phytate is added in the preparation process, so that the effect of a bridging agent is achieved, the quantity of active sites between the nanometer particles are increased, and the stronger Raman enhancement effect is obtained; and the detection accuracy and sensitivity of the gold-silver alloy nanometer particles are high, the commonality is strong, and various analyte molecules can be subjected to Raman detection.

The invention relates to a leaf vegetable organic fertilizer and a preparation method thereof. The preparation method comprises the steps of grinding maize straws, wheat straws, soybean straws and sesame straws into straw particles according to a mass ratio of 3:3:2:2, pretreating the straw particles by adding water and ammonium hydroxide to obtain a mixture A; carrying out ultraviolet ray treatment on the taken duck manure and duck feathers, and then carrying out ozone treatment, thus obtaining a mixture B; adding aspergillus niger and saccharomycetes into a mixture of grinded manioc wastes, grinded kelp wastes and water, and fermenting to obtain a mixture C; mixing the mixtures A, B and C, shell powder, plant ash and sodium humate, and adding EM (Effective Microorganism) for fermentation to obtain a mixture D; and adding bone meal and charcoal dust into the mixture D, then carrying out ozone sterilization, drying, charging in a separating manner, and carrying out ultraviolet sterilization to obtain the leaf vegetable organic fertilizer. The prepared leaf vegetable organic fertilizer contains various nutritional ingredients needed by the growth of leaf vegetables, regulates soil, activates the activity of microorganisms in the soil, overcomes soil hardening, and improves the permeability of soil air.

The invention discloses a screening agent for improving negative effect of clay on a cement concrete system of a polycarboxylic acid-doped water reducer and a using method thereof, wherein the screening agent is mixed from the following materials in parts by weight: 35-55 parts of sodium metasilicate pentahydrate, 30-50 parts of sodium tripolyphosphate, 7-15 parts of polyethylene glycol, 3-8 parts of sodium humate and 5-10 parts of sodium polyacrylate. When the screening agent is used for production of cement paste, cement mortar and concrete, the screening agent of the corresponding mass proportion only needs to be added, so that effect of improving the negative effect of clay on the cement concrete system of the polycarboxylic acid-doping water reducer can be achieved, and working performances such as liquidity, and the like, of the cement concrete system of clay can be effectively improved; and meanwhile, mechanical performances such as strength, and the like, of the system cannot be lowered.

The invention aims at floatation separation of arsenic from sulfur in arsenic-containing pyrites. The floatation separation comprises the following steps of: adjusting an ore pulp to keep the pH value of the pulp between 9 and 10; adjusting the potential of the ore pulp to between 350 and 380 millivolts by adding oxidant medicaments of sodium persulfate and calcium hypochlorite; introducing air to increase oxygen content in the ore pulp; and stabilize electrochemical conditions of mineral floatation. During the floatation separation of the pyrites from the arsenopyrites, the potential of the ore pulp is stabilized by adding the oxidant medicaments of sodium persulfate and calcium hypochlorite; the arsenopyrite is suppressed by using a new collector of dianilino dithiophosphoric acid, and regulators of sodium silicate and sodium humate according to a principle of an electrochemical floatation process to make the pyrites such as arsenopyrites, iron pyrites, pyrrhotites and the like acted with a medicament selectively in the subsequent floatation process; and the floatation separation of the pyrites from the arsenopyrites is performed so as to form a sulfur concentrate with low arsenic content.

The present invention is the preparation process and applying technique of special wolfberry fertilizer. Three kinds of concentrated fertilizer with complete nitrogen fertilizer, phosphate fertilizer and potash fertilizer for application in different growth stages are prepared with urea, calcium superphosphate and potassium sulfate as material. In addition, one kind of liquid bacterial fertilizer with complete nutrients is also developed and produced with urea, KH2PO4, KCl, EDTA, CuSO4, etc. as material. Applying the fertilizer of the present invention can produce large wolfberry fruit with increased soluble solid matter, total saccharides, protein, amino acids and wolfberry fruit polysaccharide and raise wolfberry fruit yield and quality.

The invention discloses a fish preservative. The fish preservative consists of the the following components in percentage by weight: 5-8% of trehalose, 0.1-0.5% of sodium phytate, 5-10% of pullulan, 0.2-0.5% of chitosan, 3-5% of disodium EDTA and the balance being purple perilla liquid. The fish preservative disclosed by the invention has good color protection, freshness preservation, water retention, deodorization and anti-corrosion functions, is capable of greatly prolonging the preservation time of fishes under the premise of ensuring the flavor and the mouth feel of the fishes and is high in food safety. The invention also discloses a preparation method of the fish preservative, mainly comprising the following steps: (1) preparing purple perilla liquid, namely putting perilla leaves into water to cook and filter so as to obtain filtrate which is the purple perilla liquid; (2) blending, namely uniformly mixing the trehalose, the sodium phytate, the pullulan, the chitosan, the disodium EDTA and the purple perilla liquid in a ratio to obtain the fish preservation. The preparation method disclosed by the invention is simple in processing step, low in production cost and easy to operate.

The invention discloses a tuna fresh keeping method to solve a problem that present tuna fresh keeping methods reduce the quality of tuna. The method mainly comprises the following steps: 1, preprocessing tuna bodies; 2, immersing tuna in a composite fresh keeping agent; 3, carrying out surface air drying; and 4, packaging, and refrigerating. The composite fresh keeping agent comprises, by mass, 5-10% of mycose, 0.03-0.05% of nisin, 0.05-0.1% of konjak mannan, 0.1-0.3% of sodium phytate, 2-3% of calcium chloride, 0.2-0.5% of chitosan, 3-5% of disodium EDTA, 0.3-0.5% of sodium erythorbate, 0.3-0.5% of sodium citrate, and the balance of a propolis water extraction liquid. The fresh keeping method has the advantages of easy implementation, high efficiency, low cost, good fresh keeping effect, great prolongation of the fresh keeping time of tuna, maintenance of the original eating quality of tuna, good safety, facilitation of improvement of the economic benefit of ships, and suitableness for being popularized and applied.

The invention discloses a color-protecting antistaling agent for compound pickled vegetables and a production method thereof. The color-protecting antistaling agent is composed of dehydroacetic acid, sodium acetate, ascorbic acid, sodium erythorbate, sodium phytate, sodium citrate, citric acid, sodium metabisulfite and sodium chloride. The color-protecting antistaling agent is reasonable in components and convenient to manufacture, can effectively improve preserving performance of the pickled vegetables, prolongs guarantee period, is safe, and enables the preserving performance of the pickledvegetables to be improved by over one time compared with the preserving performance of an ordinary marketing product.

The invention relates to a compound water-retaining agent for soil. The compound water-retaining agent for soil is prepared from the following components: modified chitosan, modified seaweed, acrylamide, N-vinyl pyrrolidone, N, N'-methylene bisacrylamide, ammonium persulfate, 2-hydroxyl-4-methylthiobutyrylamide, a compound additive, a fermented fertilizer, montmorillonite, sodium carboxymethyl cellulose, a nano additive, calcium aluminate powder and sodium humate. By properly selecting components and specifically combining processes, the novel compound water-retaining agent for soil shows excellent soil water-retaining performances, so that the utilization rate of moisture in the soil is greatly improved and loss of moisture is avoided, and thus, the compound water-retaining agent is beneficial to water-retaining and moisturizing of the soil and the growth of crops, and has a wide industrial prospect and a high market value.

The invention relates to a fruit tree organic fertilizer and a production technology thereof. According to the production technology, corn straw, wheat straw, soybean straw and sesame straw are crushed into straw particles at the mass ratio of 4: 2:1:1, water and aqua ammonia are added to pretreat the straw particles to obtain a mixture A; cattle manure, sheep manure and pig manure are respectively treated by ultraviolet rays and then by ozone, and then are mixed to obtain a mixture B; Aspergillus niger and saccharomycetes are added into a mixture of crushed cotton-seed cake, crushed rye grass and water to ferment to obtain a mixture C; the mixture A, the mixture B, the mixture C and sodium humate are mixed and are added with EM (Effective Microorganisms) to ferment to obtain a mixture D; shell powder, plant ash and charcoal dust are added into the mixture D, and then ozone sterilization, drying, sub-packaging and ultraviolet sterilization are performed to obtain a root vegetable organic fertilizer; the produced fruit tree organic fertilizer contains various nutritional ingredients necessary for growth of fruit trees, and can condition soil, activate the activity rate of microorganisms in soil, overcome soil hardening and increase air permeability of soil.

The invention discloses a biodegradable film packaging material and a preparation method thereof. The biodegradable film packaging material is prepared from the following components in parts by weight: 45-66 parts of polylactic acid, 20-30 parts of starch, 10-18 parts of polyvinyl alcohol, 8-10 parts of lignin, 0.5-2 parts of sodium humate, 0.5-1 part of poly(ethylene imine) and 4-6 parts of glutaraldehyde. The biodegradable film packaging material prepared by using the method disclosed by the invention is favorable in crystallinity, mechanical strength and elongation at break, free of special treatment on the surface, good in film surface tension and capable of favorably bonding ink and the film packaging material.