443results about How to "Increase economic value added" patented technology

The invention discloses a method for preparing a suaeda salsa biogenetic salt. The method comprises the following steps of: taking parts, such as stems and leaves, above roots of fresh suaedasalsa; juicing; adding water into residual solid parts and extracting once; mixing the two liquids; and performing enzymolysis, boiling, decoloration, heavy metal removal, concentration and crystallization onthe mixed liquid, thus obtaining a finished product. The yield of the product is 1.2-2.1%. The product comprises inorganic salts serving as major ingredients and natural organic matters serving as minor ingredients. The inorganic salts mainly comprise sodium chloride, potassium chloride and magnesium sulfate as well as a trace amount of trace elements (Ca, P, Fe, Zn, Se, I, Cu and Mn) and the organic matters in the product mainly comprises vitamins, amino acid and polysaccharide. During preparation, any chemical substances are not required; furthermore, the raw materials are abundant, readilyavailable and low in cost, and have extremely high economic additional value; and moreover, the preparation method is simple and feasible, is easy to produce and operate, and is wide in market prospect.

The invention particularly relates to a sludge treatment and recycling method. The method comprises the following steps: sludge conditioning, sludge deep dewater, crushing and granulation, sludge drying, and sludge pyrolysis carbonization reaction. By using an iron salt as the main conditioner, deep dewatering is carried out on the sludge to lower the water content from 90% or above to 60% or below, thereby reducing the heat source required by the subsequent drying. The sludge drying adopts the heat energy released by combustion of combustible gas generated by the subsequent carbonization technique, thereby lowering the water content of the sludge to 20% or so on the premise of basically not adding any external energy source. Since the iron salt is added in the sludge conditioning stage, when the dried sludge is subjected to anoxic / anoxic pyrolysis reaction in the carbonization furnace, the iron oxides can be supported onto sludge-base activated carbon, thereby preparing the environment-friendly material with wide applicability. Therefore, the method implements harmless and recycling treatment on the sludge at lower cost, can treat waste with waste, produces the product with higher economic added value, and thus, has higher economic and social values.

The invention discloses a method for extracting a Beta-dextran in highland barley bran and preparing a highland barley dietary fiber, belonging to the field of food processing. The method comprises the following steps of: extracting and centrifuging the highland barley bran taken as raw material at an alkaline condition by zymohydrolysis of secondary cellulose, thus obtaining a deposition A and a supernatant; depositing and centrifuging the supernatant under an acidic condition to remove albumen; adding a high-temperature resistant Alpha-amylase into the supernatant under a neutral condition for zymohydrolysis; centrifuging, depositing in water, depositing and re-dissolving the supernatant by water, centrifuging and taking the supernatant; repeatedly depositing the supernatant by a ammonium sulphate and obtaining the Beta-dextran product; adding a composite enzyme in the deposition A for zymohydrolysis; adding a hydrogen peroxide in the deposition A for decoloring; washing the deposition A repeatedly by water; obtaining a solid by centrifuging; and drying the solid at low temperature to obtain the highland barley dietary fiber. The method can sufficiently utilizes the highland barley bran, obtains two products of Beta-dextran and dietary fiber, effectively improves the economical additional value of the highland barley bran and has important realistic significance and wide application prospect for developing high-tech industries.

The invention discloses a 10 kV line loss and low voltage district line loss management analysis method, and belongs to the field of power supply. The method comprises the steps that a distribution network line loss standardization management mode and a line loss management system are built; all links of line loss work are arranged, the work focus of line loss management is grasped, a point-like line loss management mode is formed, and the integrated line loss management mode is guided through clear labor division and tacit cooperation, so that the line loss rate of power supply enterprises is gradually lowered, electric energy consumption in the power supply and distribution process is reduced, and the economical increase value of power supply enterprises is improved. By building the standard line loss management application system, an assistant decision support is provided for user fault repair and positioning, high-load distribution transformer transformation, district load distribution and the like, the phenomena such as equipment damage caused by late fault repair and long-time overload are effectively reduced, and the economic loss value of power supply enterprises is remarkably lowered. The 10 kV line loss and low voltage district line loss management analysis method can be widely used in the field of power supply management and energy conservation.

The present invention belongs to the field of ecological engineering technology. The biomass of the strand mallow is large, its body interior contains a great quantity of biomass energy. Said invention is characterized by adopting various measures to develop and utilize biomass energy of every portion of strand mallow and converte it into salt-tolerant plant with higher economic benefits.

The invention relates to a sectional material for houses and floors, which comprises two layers of different materials which contain synthetic resin. The ratios of main components of the inner layer material of the sectional material by weight are 100 portions of PVC, 0.8 to 1 portion of foaming agent, 5 to 6 portions of composite stabilizing agent and 7 to 9 portions of regulator; the ratios of the main components of the outer layer material by weight are PVC, plant material, composite stabilizing agent, pigment and adhesive; the two layer materials are pressed, molded and processed to become the sectional material. By adopting the ratios and the processing method provided by the invention, the sectional material produced has a color and a texture which are similar to the wood and a relatively high structural intensity, meanwhile the application of plant materials, such as wood powder, etc., are reduced in the production, thereby protecting the environment.

The invention relates to a method for preparing phosphatidylserine and phosphatidylcholine, and belongs to the field of food health-care products. The method comprises the following steps of: extracting soybean meal phospholipid which is used as a raw material by an organic solvent, and then distilling and drying to respectively obtain a phosphatidylcholine crude product and a phosphatidylserine crude product; and separating and purifying the phosphatidylcholine crude product and the phosphatidylserine crude product through a silica gel column of 200-300 meshes, eluting with a mixed organic solvent, concentrating the eluant, and drying to obtain phosphatidylserine and phosphatidylcholine. According to the method, the purities of the phosphatidylserine and the phosphatidylcholine meet requirements of new resource foods, so that the phosphatidylserine and the phosphatidylcholine can be used as new resource dietary supplements and have high economic added values; and the phosphatidylserine and the phosphatidylcholine are prepared at the same time by effectively combining simple extraction of the phosphatidylserine and the simple extraction of the phosphatidylcholine. By the method, the production time is shortened, the production cost is reduced, the production rate is improved, the operation is simple, and the products have safety.

The invention discloses a method for preparing a heavy metal adsorbent. The method comprises the following steps: firstly carrying out alkali treatment on bagasse to prepare bagasse cellulose; carrying out ultrasonic activation on the bagasse cellulose, and sequentially adding an initiating agent, N,N'-methylene bisacrylamide and acrylic acid for grafting reaction to prepare a graft copolymerization product, wherein the N,N'-methylene bisacrylamide and the acrylic acid are neutralized by an NaOH solution; sequentially washing by using distilled water and absolute ethyl alcohol, drying and crushing to obtain a crude product of the heavy metal adsorbent; and carrying out acetone extraction to obtain the purified heavy metal adsorbent. Compared with the prior art, the preparation method disclosed by the invention has the beneficial effects of crushing and removing the outer layer of a cell wall of a bagasse fiber by carrying out ultrasonic activating treatment on the bagasse fiber, so that the chemical reaction activity of the bagasse fiber is enhanced, the grafting ratio of the grafting reaction is increased and the adsorption property of a product is improved.

The invention belongs to the technical field of a building material, and particularly relates to an active compound activator of phosphorous slag powder and a using method thereof. The active compound activator is compounded of industrial waste carbide slag, desulfurized gypsum, and chemical reagents (or industrial materials) sodium silicate, aluminum sulfate and sodium hydroxide. A plurality of activation compound effects of alkali-activation, basic salt-activation, sulfate activation and the like are mainly utilized to completely activate the activity of the phosphorous slag powder. By adopting the product disclosed by the invention, the activity of the phosphorous slag powder can be effectively activated; the problems of delayed coagulation, low early strength, slow strength development and the like existing when the phosphorous slag powder is used as concrete or mortar admixture are obviously relieved. By adopting the active compound activator, application of the phosphorous slag powder as the admixture in the industries such as cement and concrete can be facilitated, waste materials are changed into precious materials; the economic benefits are improved; meanwhile, the problems of environmental pollution, soil waste and the like caused by stocking of a lot of phosphorous slag also can be solved; the environmental benefits are improved. In addition, the problem of shortage of excellent admixtures such as coal ash, slag powder and the like in the industries such as cement and concrete also can be relieved.

The invention relates to a biochar-based fertilizer for restoration of heavy metal contamination of arable soil. The biochar-based fertilizer is composed of, by mass, 50% of biochar, 15% of micropowder of water-chilled dreg from a blast furnace, 30% of fresh cow dung and 5% of a composite biological inoculum. As the biochar and the micropowder of water-chilled dreg from the blast furnace undergo strict screening and effective component activation, the pH value of the soil is increased, the granular structure of the soil is improved, adsorption effect on heavy metal elements in the soil is effectively strengthened, and soil heavy metal restoration effect is enhanced; and in the composite composed by the biochar, the micropowder of water-chilled dreg from the blast furnace, the fresh cow dung and the composite biological inoculum according to a certain proportion, the biochar improves adsorption of heavy metals in a soil solution, the micropowder of water-chilled dreg enhances the silicon utilization rate of crops under the action of an activator, the crops prevent and control migration of heavy metals to the bodies of plants while absorbing silicon so as to reduce heavy metal content in the crops, and the biochar and the micropowder of water-chilled dreg have synergistic interaction in controlling of absorption of heavy metal elements in the soil by the crops.

The invention discloses a foaming microcrystal material based on smelt slag and a production process thereof. In the process, with the smelt slag as a main raw material with addition of natural minerals and additives, the foaming microcrystal material is produced through steps of water quenching, foaming and then a crystallization reaction. The process can utilize the industrial wastes, smelt slag, as most as possible and can increase the economic additional value and reduce production cost of the product at the same time of treating the slag. The foaming microcrystal material is better than similar inorganic foaming products, such as foam glass, foamed ceramic and the like, in the prior art in aspects of strength, heat conductivity, flame retarding performance and the like, wherein additional value is increased by more than 10 times than that in conventional processes. The foaming microcrystal material is used in various industrial and building heat preservation fields as a high-quality fireproof and heat preservation material, has positive promotion effect in the field of environmental protection and energy saving and emission reduction, and has huge social and economic benefits.

The invention discloses a method for preparing a hollow tubular activated carbon electrode material for a supercapacitor from cotton. The method comprises the following steps: removing impurities from a cotton raw material, washing, drying carbonizing, mixing the cotton raw material with an alkaline activator for activation, washing, drying and the like to obtain the hollow tubular activated carbon electrode material for the supercapacitor. The electrode material for the supercapacitor, which is prepared by the method, has a relatively high specific surface area and a relatively good capacitance characteristic, and has a special hollow tubular morphology. The method is of great significance in increasing the economic added value of the cotton, reducing exploitation of a high-quality coal resource so as to realize a concept of low carbon, environment friendliness and green living, improving the performance of the supercapacitor and reducing the production cost.

The invention discloses a comprehensive utilization method of straw, aiming at solving the problems that the straws are treated by mainly adopting a rot or incineration manner currently so as to seriously pollute environment and air quality, and the rotting and incineration of the straw are resource-wasting. The method disclosed by the invention comprises the steps of preparation of fine straw powder, preparation of a complex microbial inoculant, reaction, posttreatment and the like. According to the invention, the straw can be transformed into multiple products through application of chemical and biological engineering comprehensive manners, and thus the problems that the straw is rotten or burnt so as to cause pollution of environment pollution and wasting of resources are effectively solved, and the prepared product has the advantages of wide application and high economic additional value and has important influence and outstanding progressive meaning. According to the method, ethyl alcohol, activated carbon, liquid fuel, feed, biomass charcoal, fertilizer and the like can be obtained, wastes are turned into wealth, the additional value of the straw is obviously improved, and the comprehensive utilization method has an important meaning on long-time sustainable utilization of the straw.

The invention discloses a biomass fuel based on sludge, straw and raw coal, a preparation method of the biomass fuel and application of a fuel slag, and belongs to the field of resource utilization of solid waste. The biomass fuel is formed by mixing, pressing and molding the sludge, the straw and the raw coal; and the weight ratio of the sludge, the straw and the raw coal is (1-3): (1-3): 3. The preparation method comprises the following steps of: adding limestone to the dehydrated sludge subjected to application of an aluminum coagulant, wherein the mass percentage of the limestone in the sludge is 1 to 3 percent; mixing the sludge and the straw to aerobically compost; mixing the raw coal with the mixture of sludge and straw, pressing and molding to obtain the biomass fuel. After the biomass fuel disclosed by the invention is burnt, the maximum absorption capacity of the slag exceeds 25g / Kg and can be used as substitutes of filler materials for artificial wetlands. According to the biomass fuel based on sludge, straw and raw coal, the preparation method of the biomass fuel and the application of the fuel slag, water in the raw material can be hydrated quickly, heavy metals can be passivated, the emission of SO2 in combustion of the raw coal can be reduced, and the burnt slag of the biomass fuel has high contents of calcium, aluminum and Ferrum with strong absorption capacity to phosphor and can be used as a phosphorus removing agent during sewage treatment.

The invention relates to a method for joint production of natural gas and liquid ammonia by using coke oven gas and blast-furnace gas. The method comprises the following steps: firstly, pressurizing the coke oven gas through a Roots blower or a screw compressor; feeding to the compressor and carrying out first-stage and second-stage compression pressurization through a temperature swing adsorption device; carrying out third-stage compression pressurization through the compressor after passing through a pressure swing adsorption decarburizing device; feeding to a coke oven gas desulphurization device, feeding to a methane synthesis device and obtaining a natural gas or liquefied natural gas product through the pressure swing adsorption device or a cryogenic separation device; carrying out first-stage and second-stage compression pressurization on the coke oven gas through the compressor, mixing with vapor, feeding to a sulphur-tolerance shift device, and carrying out low-temperature sulphur-tolerance shift; sequentially feeding to a blast-furnace gas desulphurization device, the pressure swing adsorption decarburizing device and a pressure swing adsorption denitrification device; and mixing the purified blast-furnace gas with nitrogen and hydrogen, which are separated from the coke oven gas, then carrying out third-stage, fourth-stage, fifth-stage and sixth-stage compression pressurization through the the compressor, and feeding to a synthesis ammonia device after passing through a methanation device, so as to produce an anhydrous liquid ammonia product.

The invention belongs to the field of paper pulp manufacturing and particularly relates to a method for utilizing a bamboo raw material to produce high-polymerization-degree dissolving pulp. The method is characterized by comprising the steps of material preparation, prehydrolysis, hot alkali extraction, alkaline method cooking, oxygen bleaching, bleaching and acid treatment and the like, and the clean pulping method for the high-polymerization-degree bamboo pulp solves the problems that existing production raw materials for the high-polymerization-degree dissolving pulp is sufficient, the technology falls behind, and pollution is severe, and the like. The polymerization degree of the manufactured bleached bamboo pulp is over 2000, the whiteness is over (90+ / -2)%ISO, a-cellulose is over 96%, the ash content is below 0.1%, the Fe ion is below 20ppm, S18 is below 3%, S10 is below 4%, and (S10-S18) is below 2%.

The invention discloses ecological and environmental protection type pervious concrete prepared from waste concrete. The pervious concrete is prepared from raw materials in percentage by weight as follows: 65.5%-79.5% of recycled aggregate composition, 1.2%-2.4% of recycled concrete micro-powder, 14-19.5% of cement, 2.4%-4.8% of granulated ferrochrome slag powder, 0.1%-0.3% of a water reducing agent, 0.1%-0.3% of a modifier, 0.1%-0.2% of Welan gum and the balance of water. According to the ecological and environmental protection type pervious concrete, a large quantity of construction garbage and waste residues are consumed, exploitation of natural resources is reduced, the cost is reduced, the added economic value of the construction garbage and the waste residues is increased, development of the construction garbage resource treatment and utilization industry is promoted, and the concrete has the significant economic benefit and social benefit; the modifier and the Welan gum are used, the reactivity of aggregate and an additive in the pervious concrete is improved, and the strength of the concrete is significantly improved on the premise that the permeability performance is guaranteed.

The invention discloses a probiotics microcapsule capable of keeping activity of strains and a preparation method thereof. The probiotics microcapsule is of a composite wall material structure which is composed of a first wall material and a second wall material, wherein the first wall material is protein plant polysaccharide complex gel which is prepared from casein, malt extract and xylooligosaccharide, can effectively block damages, on a core material, of light, heat, oxygen, metal ions and the like, and achieves positive promoting effect on stability of an embedded material; the second wall material is a plant polysaccharide composite which is prepared from tremella polysaccharide, rhizoma bletillae polysaccharide, bighead atractylodes rhizome polysaccharide, guar gum and pectin, and can greatly reduce influences, on biological activity of probiotics strains of the core material, of a vacuum freeze-drying and processing process; and meanwhile, when the second wall material coats the first wall material, the first wall material containing a great number of proteins can improve film-forming property and embedding effect of the second wall material, so that the performance of thecomposite wall material is integrally improved, and therefore, the composite wall material can protect the biological activity of the core better, and remarkably improves the stability of the core material.

The invention relates to a method for processing cherry valley duck fillet. The method comprises the following steps:, selecting cherry valley duck breast meat as a main ingredient, slitting, tenderizing, adding auxiliary materials, rolling, salting, sizing, frying, draining and quick-freezing; and finally packaging to obtain finished products, wherein the duck breast meat is tenderized during tenderization by adopting ultrasonic waves, the ultrasonic power is 300-310W, the concentration of Ca<2+> is 200-220mmol / L, the treatment time is 15-20 minutes, and the treatment temperature is 38-40 DEG C; the main ingredient of the duck breast meat and the auxiliary materials are rolled in vacuum during rolling and salting, and salting at the temperature of 0-4 DEG C for 10-12 hours. The product is unique in flavor, good in mouthfeel and rich in nutrition, and the production process is simplified and suitable for industrial large-scale production.

The invention relates to a high-efficiency environmental-friendly utilization method for acid-mixed removal plating liquid, which comprises: putting the liquid into reaction kettle, adding Na2CO3 or NaOH to neutralize free HNO3 and H2SO4, separating the micro impurity of iron, chrome and aluminum as hydroxide precipitate, and controlling the pH value; filtering, adding Na2CO3 saturated solution for neutralization, and adding a little CaCO3 to deposit copper as CuSO4 and excessive SO4- as CaSO4; filtering, preparing CuSO4 with slag and H2SO4, separating CuS and ZnS with added H2S gas; filtering again, adding Na2CO3 or NaHCO3 to deposit the nickel as basic nickel carbonate or nickel carbonate; filtering, preparing nickel sulfate with slag and sulfuric acid, and preparing NaNO3 product as normal technique. This invention makes full use of the sewage.

The invention discloses a method for preparing high-activity nattokinase by taking black beans as raw material, belonging to the technical field of biology. The method comprises the following steps: soaking the black beans by using a special nutrient solution, cooking the black beans after soaking and further inoculating bacillus natto to perform fermentation, wherein the special nutrient solution comprises the following components: lactose, tryptone, Na2HPO4, NaH2PO4, MgSO4 and CaCl2. The method further comprises the steps of performing extraction separation and freeze-drying on a fermentation product. The nattokinase obtained by adopting the method has high enzyme activity, which can achieve 42500IU / g, and the nattokinase has the advantages of high enzyme activity, low ammonia smell and good taste in comparison with the nattokinase produced by taking yellow beans as the raw material and performing a traditional fermentation method; and the content of nutritional components in obtained fermented black bean residue is also obviously improved. The method has the advantages of short fermentation period, simple preparation process and high bioavailability, and is conductive to industrial production.

The invention provides a method for preparing an insoluble tea-leaf dietary fiber. The insoluble tea-leaf dietary fiber is prepared from tea leaves serving as raw materials by drying, coarse grinding, acid treating, alkali treating, degreasing, decoloring, drying and crushing. The insoluble tea-leaf dietary fiber has high intermediate product whiteness, high organoleptic quality and high water holding capacity and expansibility. By utilizing the tea leaves to prepare the insoluble dietary fiber with high activity, the method realizes comprehensive utilization of tea processing and remarkably increases economic value added.

The invention discloses a glass fiber reinforced laminated veneer lumber and a producing method thereof and aims to provide a light high-strength reinforced wood building material which has simple structure and can be processed and produced easily. The material comprises glass fiber products and wood veneers, and the glass fiber products are arranged between two veneers at the bottom layer of the laminated veneer lumber, wherein angular separation formed by the longitudinal and latitudinal fiber of the glass fiber products and the fiber of the veneers ranges from 0 to 90 degrees. The producing method of the glass fiber reinforced laminated veneer lumber comprises the following steps: spreading glue on veneers, wherein the glue selects phenol aldehyde resin, and the single spread is 120-220g / m<2>; assembling blanks along with the grain and adding a glass fiber reinforced layer, and then aging for 10-60 min; and hot-pressing at the temperature of 130DEC G-180 DEG C for 0.7-1.7 min / mm (veneer thickness), wherein the blank compression ratio is 10%-50%. The method can greatly improve the elastic modulus and the bending strength of the laminated veneer lumber.

The invention provides a preparation method of active carbon as well as active carbon prepared by taking giant reed as a raw material. Stove ashes are taken as an additive, and alkali metal salts rich in the stove ashes can be utilized to greatly accelerate the separation velocity of volatile components in the raw material, so that the carbonization time is shortened and the product quality is improved. The preparation method comprises the steps of carbonization, activation, winnowing separation, acid-washing and ash-removing, rinsing and drying. By virtue of the preparation method of the giant reed active carbon, not only are waste plant resources of a constructed wetland sufficiently utilized to improve the economic value added of the wetland plants and broaden a raw material source channel for active carbon production, but also the time consumption in a preparation process is shortened to a certain extent to improve the product quality, and thus the preparation method has the advantages of low cost, a simple preparation process and the like.

The invention belongs to the field of metallurgy and relates to a method of recovering copper and nickel from plastic plated parts. The method is mainly characterized in that by means of sulfuric acid leaching and using hydrogen peroxide and air or oxygen as oxidizing agents, a micro-bubble generator is used to blow the air or oxygen into a reactor in a micro-bubble form, leached solution is treated by cyclone electrowinning to produce cathode copper, anode liquor is frozen and crystallized to produce crude nickel sulfate, and the crude nickel sulfate is subjected to the steps such as dissolving, impurity removal by extracting, evaporation concentration, and cooling crystallization to produce high-purity nickel sulfate. The method has the advantages that reaction speed is high, no other impurities are introduced, metal recovery rate is high, solution circulates in a closed loop, no wastewater or waste residue is produced, few auxiliaries are used, energy consumption is low, and low carbon, energy conservation and emission reduction can be achieved.

The invention relates to a preparation method of jackfruit white spirit, which comprises the following steps: performing antioxidating process for pulp and fruit silk of the jackfruit, mixing with water, mashing, pressing, adding potassium metabisulfite, pectinase and citric acid into scum juice, performing enzymolysis, adjusting sugar content of the jackfruit slurry, adding alcohol dry yeast andammonium dibasic phosphate into the jackfruit slurry and fermenting, filtering 2-4% of the mash obtained from fermentation, performing crude distillation and rectification for the rest of the mash, blending distilled liquor with the fermented mash and performing cold-heat treatment, adding oak pieces and ageing, and performing fine filtration and aseptic canning to obtain the finish product as jackfruit white spirit. The invention uses pulp and fruit silk of the jackfruit as raw materials, and adopts fermenting method which combines open type and closed type steps, stirring and standing stepsand artificial ripening process and oak pieces ageing. Jackfruit white spirit thus obtained has a natural harmonious fragrance of jackfruit liquor and oak and a soft mouthfeel, which increases the economic added value of the jackfruit and has practical significance.

The invention relates to a method for industrially producing nattokinase by using chickpea, which belongs to the biological field. The invention discloses the method for industrially producing nattokinase by using chickpea. According to the invention, high-yield strain fermented by a nattokinase solid is inoculated in the chickpea and a nutrient solution for fermenting and producing nattokinase, the method comprises the steps of crushing, immersing, disinfecting, inoculating, fermenting, ripening, extracting, separating, freeze-drying and the like. The method for producing nattokinase by fermenting chickpea, the enzyme activity of a crude enzyme liquid can reach 3270IU / g, the enzyme activity after extraction and separation is 35000IU / g, compared with the nattokinase produced by a traditional fermentation method which takes soybean as a raw material, the nattokinase produced by using chickpea has the advantages of high enzyme activity, short fermentation period, low ammoniacal smell and good mouthfeel. According to the invention, methods of cross flow nanofiltration and alcohol precipitation are used for extracting and separating nattokinase, the production technology is simple and is benefit for industrial production, simultaneously, advantages of more abundant nutrition and natural antioxidation of the chickpea are kept.

The invention provides poultry feather protein viscose silk and a manufacturing method thereof. The poultry feather protein viscose silk is characterized by being prepared from the following raw materials in percentage by weight: 5 to 15 percent of poultry feather protein and 85 to 95 percent of organic fibers. The poultry feather protein viscose silk is reliable in strength, high in chromaticity, wide in application range and high in economic additional value, can improve the comfortableness with skin, has a certain function of ultraviolet absorption and radiation protection, can be manufactured into functional textile shell fabrics of the new generation and has the great commercial value.

The invention relates to a method for preparing food-grade bamboo vinegar by taking bamboo wood as a raw material, which is characterized by comprising the following steps of: a, preparing refined bamboo vinegar, namely crushing the bamboo wood into bamboo chips, performing dry distillation and carbonization on the bamboo chips, performing two-stage condensation, mixing the bamboo vinegar obtained by the two-stage condensation in a mixing tank, and standing and purifying; and b, preparing the food-grade bamboo vinegar, namely performing three-stage distillation and condensation on the refined bamboo vinegar obtained in the step a, and collecting condensate obtained by the third stage distillation and condensation in a storage tank so as to prepare the food-grade bamboo vinegar which is pure, colorless and free from smoke odor. The invention also relates to the food-grade bamboo vinegar, which is pure, colorless and free from the smoke odor, prepared by the method, and application of the food-grade bamboo vinegar in food and health care products.