433 results about "Corncob" patented technology

The invention relates to a multi-modal fusion corn harvester header height adaptive adjustment method and system, and belongs to the technical field of automation control, the method comprises the following steps: using a binocular camera to collect crop images, and preprocessing the crop images to obtain a depth map; the image is input into a YOLOV8n model, and coordinates of a center point at the bottom of a bounding box of the corncob are obtained through model operation; performing plane fitting on the depth map to obtain a ground height; calculating a corn ear height initial value based on the ground height and the center point coordinate; vibration data of working of the harvester is collected to perform vibration compensation on the initial height value to obtain a height correction value; and dynamically adjusting the header height of the harvester by adopting a dynamic fuzzy PID algorithm based on the correction value. According to the method, the target detection model and the dynamic fuzzy PID algorithm are combined, so that the problems of low visual detection precision and control response lag of existing agricultural machinery in a complex field scene are solved, and crop loss in harvesting operation is effectively reduced.

The invention relates to the technical field of microbial agents, in particular to a composite microbial agent and application of the composite microbial agent in prevention and treatment of forest root diseases, and the composite microbial agent comprises the following components in parts by weight: 15-25 parts of Trichoderma harzianum ATCC 20847; 10 to 20 parts of bacillus subtilis ATCC 605, 10 to 20 parts of bacillus subtilis ATCC 605, 10 to 20 parts of bacillus subtilis ATCC 606 and 10 to 20 parts of bacillus subtilis ATCC 607. 5-10 parts of a seaweed extract; 3 to 8 parts of chitosan; 2-5 parts of humic acid; 1 to 3 parts of glycine betaine; 0.5 to 1.5 parts of a trace element compound; 30 to 40 parts of perlite powder; according to the present invention, the fertilizer has characteristics of significant inhibition effect on a variety of forest root pathogenic bacteria, wide prevention and control spectrum, and long-term and stable disease prevention effect by adjusting the rhizosphere micro-ecosystem. Diseases are prevented and controlled, and the growth and root development of the forest trees are remarkably promoted.

The invention discloses a device and method for preparing biochar from corncobs, and belongs to the technical field of biochar preparation, the device comprises a machine base, a frame is fixed outside the machine base, an outer cylinder is horizontally fixed on one side of the machine base, and the outer cylinder is fixedly connected with the frame; the crushing seat is arranged above the outer cylinder; the combustion system is arranged on one side of the outer barrel, and the combustion system is externally connected with a hot gas booster fan; the sealing end cover is fixed in the outer cylinder body; the carbonization cylinder is rotationally mounted on the machine base, and one end of the carbonization cylinder is coaxially and rotationally connected with the sealing end cover; the heat control unit is arranged in the annular cavity of the carbonization cylinder; the material guide channel is arranged on the sealing end cover; the filter material unit is fixed in the carbonization cylinder; according to the device, a scrap mixture can be graded according to the particle size, primary carbonization of the scrap mixture is achieved, then the scrap mixture is remixed and then subjected to high-temperature pyrolysis carbonization, and the purity and quality of biochar preparation are improved.

The invention discloses an endoglucanase truncated mutant and an application of the endoglucanase truncated mutant. According to the invention, based on endoglucanase BsEGL from bacillus subtilis DLG, a truncated mutant is constructed by deleting a carbohydrate binding domain (CBM) of the endoglucanase BsEGL, and the truncated mutant is named as BsEGL [delta] CBM. Compared with BsEGL, the truncated mutant BsEGL delta CBM has the advantages that the thermal stability, the pH stability, the organic solvent tolerance and the like are remarkably improved, and the activity of degrading phosphoric acid expanded cellulose and corncob xylan is obtained. In addition, the enzymatic activity of the truncated mutant BsEGL delta CBM is remarkably improved by 6.41%, and the catalytic efficiency is remarkably improved. Due to the characteristics, the mutant can be suitable for industrial processes such as feed processing, papermaking, biological energy sources, spinning and food brewing, and is particularly suitable for enzyme catalytic reaction under extreme environments such as high temperature and low pH. The invention provides an enzyme preparation tool with excellent performance for efficient degradation of cellulose biomass, and has important application value.

A corn kernel harvesting device and method thereof is provided. As the corn kernel harvesting device, or corn shucker, moves from a first configuration to a second configuration, the device separates corn kernels from its respective inner core, such as a corn cob. The corn kernel harvesting device comprises an ejection assembly, harvesting assembly, discharge assembly, and is configured to enable a user to remove corn kernels efficiently and consistently from a corn cob.

The invention relates to a compound soil improvement fertilizer and a preparation process thereof, and belongs to the technical field of agricultural environmental protection. The fertilizer is prepared from a modified biochar carrier, a compound microbial agent, an organic fermentation substrate and an inorganic mineral component. The modified charcoal carrier forms a hierarchical pore structure through acid modification and mineral loading; the compound microbial agent comprises phosphate solubilizing bacteria, nitrogen-fixing bacteria and organic matter degrading bacteria; the organic fermentation substrate is prepared from mushroom bran, activated sludge and corncob through segmented fermentation; the inorganic mineral component comprises attapulgite and dolomite powder. The preparation process comprises the steps of biochar modification treatment, microorganism composite culture, organic matrix segmented fermentation and slow-release coating granulation. The fertilizer can synchronously improve the physical structure, chemical properties and microbial ecology of soil, significantly improve the nutrient utilization efficiency, reduce the application amount of the chemical fertilizer, effectively repair degraded soil and enhance the stress resistance of crops.

The invention relates to the technical field of biology, in particular to a KASP marker for identifying corn haploids, a primer group and application of the KASP marker and the primer group. According to the invention, a corn Maize 60K chip is used for respectively hybridizing eight inbred lines (Mo17, B73, Qi319, HZ4, Z58, W64A, W22 and TX) with an induction line CAU5 to screen out eight groups of haploids (10 haploids are respectively induced in each group as repetitions) from filial generations F1, 145 sites which are shown as 100% stable completion of male parent chromosome elimination in respective 10 haploids of the eight F1 combinations are obtained, and for the 145 sites, the male parent chromosome elimination is completely completed. 94 stable KASP markers are developed, and a new way is provided for accurate screening of haploids.

The invention relates to the technical field of edible mushroom cultivation, in particular to a culture medium for cultivating stropharia rugoso-annulata and a preparation method and application thereof. The culture medium for cultivating the stropharia rugoso-annulata is prepared from the following components: rape straw, soybean meal, rice chaff, pepper straw, rice straw, loofah sponge, livestock and poultry manure, corncob, sawdust, calcium lignosulphonate and gypsum powder. The time from sowing to fruiting is 40-55 days by adopting the stropharia rugoso-annulata culture medium provided by the invention, and the fruiting time is obviously shortened compared with that of a contrast. By adopting the culture medium for cultivating the stropharia rugoso-annulata, the average yield of the stropharia rugoso-annulata reaches 8.15-8.64 kg / m < 2 >, and compared with a contrast, the average yield of the stropharia rugoso-annulata is remarkably improved. Therefore, the oilseed rape straw, the soybean meal, the rice chaff, the pepper straw, the rice straw, the loofah sponge and the calcium lignosulphonate are compounded, the fruiting time of the stropharia rugoso-annulata is shortened, and the yield of the stropharia rugoso-annulata is increased.

The invention belongs to the technical field of environmental restoration and biology, and discloses a modified corncob as well as a preparation method and application thereof. According to the method, a mixed solution of NaOH and acetyl bromide is used for modifying corncobs, lignin in the corncobs is removed through alkalization pretreatment in the modification process, the porosity and the specific surface area of the corncobs are increased, and meanwhile, acetyl bromide is adopted for treatment, so that the adsorption capacity and the immobilization efficiency of the corncobs to microalgae are enhanced. The modified corncob can be crosslinked with an exogenous polymer (EPS) secreted by the microalgae, so that the microalgae can be stably attached and survive for a long time, and the application effect of the corncob in wastewater treatment and ecological restoration is improved. The invention provides an efficient and sustainable biological immobilization technology, provides a new technical path for water pollution treatment and ecological restoration, and has a wide application prospect.

The invention discloses a tricholoma matsutake culture medium using litchi branches as a matrix and a cultivation method thereof. The tricholoma matsutake culture medium is prepared from the following components in percentage by weight: 30-50% of litchi sawdust, 30-50% of cottonseed hulls, 3-8% of bran, 3-8% of corncobs, 3-8% of rice husks, 1-5% of corn flour and 1-5% of lime. The method is characterized in that the litchi branches are added into the stock liquid culture medium for making the branch seeds for the first time, on one hand, the tricholoma matsutake strains can be trained to generate extracellular enzymes capable of utilizing litchi wood chips, macromolecules of the litchi branches can be rapidly decomposed, and on the other hand, nutrient elements contained in the litchi branches can promote growth of tricholoma matsutake hyphae more rapidly, and the growth rate of the tricholoma matsutake hyphae is increased. The branch seeds are large in inoculation area and high in hybrid resistance, the growth time of mycelium of the cultivation material can be shortened, and the fruiting rate is increased. The invention not only provides a solution for innocent treatment of the litchi branches, but also finds a new culture medium for red tricholoma matsutake culture.

The invention relates to a cavern environment-based tricholoma matsutake artificial cultivation method, and relates to the technical field of edible fungus cultivation, and the method comprises the following steps: mushroom stick preparation: mixing pine sawdust, corncob, bran, rice bran and an additive, adding water, bagging, sterilizing with high-pressure steam or normal-pressure steam, and inoculating tricholoma matsutake strains into each bag; environment construction: installing temperature and humidity regulation and light scattering equipment in cave depots, natural caves and air-raid shelters with the soil layer thickness of more than 50 m, the constant temperature of 10-20 DEG C and the humidity of 70-90%; in the hypha stage, the temperature is controlled to be 15-18 DEG C, the humidity is controlled to be 70-80%, and culture is conducted for 40-60 days; in the fruiting stage, the temperature is lowered to 12-16 DEG C in a stepped mode, the humidity is increased to 85-90%, and harvesting is conducted after fruiting bodies are induced to be formed. And recycling resources: crushing the waste mushroom sticks, and mixing the crushed waste mushroom sticks with soil according to a ratio of 1: 3 to prepare a fertilizer or mixing 10-30% of a new material for reuse. The produced tricholoma matsutake has the tricholoma matsutake alcohol content of 77.21 mg / kg and the polysaccharide content of 2.67%, the active components of the tricholoma matsutake are equal to those of wild tricholoma matsutake, the hypha germination rate is greater than or equal to 95%, the growth period is shortened to 40-60 days, and the raw material consumption is reduced by

The preparation method comprises the following steps: mixing corncobs, a carbon source, rice husks, a nitrogen source and a conditioner, and adjusting the initial moisture content of the mixture to 55-65% so that the C / N ratio reaches (25-30): 1 to obtain a pile body; covering the surface of the pile body with a nano microporous membrane, starting an aeration system in a high-temperature stage, adjusting the air pressure difference inside and outside the membrane to 50-100Pa in a cooling stage, and continuously fermenting; after 7-10 days of fermentation, when the pH value of the base material is stable and the total nutrient meets the requirement, the fermentation is completed, the base material is bagged and sterilized, and the tricholoma matsutake cultivation base material is obtained. According to the method, the fermentation period is shortened to 1 / 3-1 / 2 of that of a traditional method, and the production efficiency is improved. In addition, the infectious microbe contamination rate of the base material is reduced, the purity and quality of the base material are improved, and a healthier environment is provided for growth of tricholoma matsutake. And the yield of tricholoma matsutake is increased by 40%. Not only is the yield of tricholoma matsutake increased, but also the nutritional value of tricholoma matsutake is improved, and higher economic benefits are brought to farmers.

The invention discloses a high-efficiency aerobic fermentation corncob-based biological conditioner and application thereof. Aiming at the common problems of unstable carrier effect, poor environmental adaptability, easiness in inactivation of the microbial inoculum, difficulty in continuously exerting efficacy and the like existing in the existing composting microbial inoculum, the agricultural waste corncob with a porous structure and excellent water-retaining and fertilizer-retaining natural characteristics is pretreated and modified; and the immobilized carrier of the aerobic fermentation inoculant with high activity and high stability is constructed. The carrier matrix can be used for efficiently loading and remarkably improving the expanding culture core aerobic fermentation functional flora to prepare a solid biological conditioner. The corncob-based biological conditioner is applied to the composting process of organic solid wastes, promotes the humification process of organic materials, shortens the composting period, improves the fermentation efficiency of the materials, and effectively improves the resource utilization level of the organic solid wastes.

The invention discloses a PVA / urea / CC lignocellulose composite mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching films. The composite mulching film disclosed by the invention is obtained by adding PVA (Polyvinyl Alcohol) into a corncob lignocellulose HTP-CC dispersion liquid subjected to hydrothermal pretreatment, then sequentially adding glutaraldehyde, urea and glycerol and carrying out cross-linking reaction. The mechanical property of the PUCH mulching film prepared by the invention meets the GB / T35795-2017 standard, and the PUCH mulching film has excellent water vapor barrier property, ultraviolet shielding property, urea controlled release property, heat insulation property and biodegradability. The characteristics not only can promote crop growth, but also can reduce agricultural environmental pollution. Therefore, the PUCH mulching film shows huge potential to replace the traditional plastic mulching film, and has important application prospects in agricultural planting.

The invention discloses marasmius albus DCY6478 as well as a culture medium and application thereof, and belongs to the technical field of microorganisms. The invention discloses a Marasmilla sp. DCY6478 strain, and the preservation number of the Marasmilla sp. DCY6478 strain is GDMCC (China General Microbiological Culture Collection Center) No.65883. The Marasmilla sp. Experimental verification results show that the culture medium formula most suitable for growth of the white marasmius is prepared from the following components in percentage by weight: 40% of apple sawdust, 36% of corncob, 14% of cottonseed hull, 1% of lime and 1% of gypsum; the fermentation liquor is verified to have an inhibition effect on a plurality of pathogenic bacteria; the DPPH free radical scavenging capacity of the fermented hyphae is verified, the superoxide dismutase activity and catalase activity are both higher than those of sporocarp, and the fermented hyphae can be used as a natural antioxidant source; it is verified that fermented hyphae or sporocarp of the strain have the capacity of secreting amino acid and polysaccharide and producing crude protein, and a new raw material selection is provided for the industries of food, medicine and the like.

The invention provides a viscosity-improving filtrate reducer as well as a preparation method and application thereof. The viscosity-improving filtrate reducer is a polymerization product of modified corncob powder and a polymer, the modified corncob powder is corncob powder modified by an alkaline compound. The viscosity-improving and filtrate-reducing agent has the advantages of environmental protection, tackifying property and filtrate-reducing property, is low in production cost, and is a low-cost drilling fluid treating agent with tackifying property, filtrate-reducing property and environmental protection property.

The invention provides a water-retaining material as well as a preparation method and application thereof, and finds that corn glume has extremely high water absorption rate and can be used as an excellent water-retaining material. The glume is obtained by crushing corncobs and then carrying out winnowing and gradient sieving, and the particle size is 2-3mm. In order to effectively utilize the material, the obtained corn glume, a binder, an expanding agent and water are mixed and granulated to prepare water-retaining agent particles, and the water-retaining agent particles are easy and convenient to apply, high in water-retaining capacity and capable of effectively improving the water-retaining capacity of soil and improving the temperature, humidity, conductivity and bulk density of the soil; therefore, the method has important commercial value for soil and land improvement.

The utility model discloses an ear picking box and a corn harvester header thereof, which relate to the technical field of agricultural harvester equipment and comprise a power input part, a first power output part and a second power output part, the power input part is in transmission connection with a power supply device through a transmission system; the power input part is connected with the first power output part through a transmission shaft; according to the header of the corn harvester, the pair of seedling pulling assemblies corresponding to the corncob picking rollers composed of the adjacent corncob picking rollers is creatively in transmission connection with the corncob picking box through the transmission device, that is, the power of the pair of seedling pulling assemblies is provided by the corncob picking box, and the problem that in the prior art, the corncob picking rollers are prone to being damaged is solved. And when the seedling pulling chain is clamped and cannot rotate normally, the chain or the belt and the conveying belt for connecting the small elevator driving shaft and the small elevator driven shaft are broken.

The invention discloses a cultivation method for fruiting stropharia rugoso-annulata fruiting bodies without covering soil. The cultivation method comprises the following steps: 1) preparing a fruiting culture material; 2) primary composting fermentation; 3) secondary turning fermentation; 4) performing secondary fermentation in a greenhouse; (5) spreading materials; (6) sowing; 7) spawn running; 8) bud pressing; 9) cultivating mushrooms; and 10) harvesting. And 11) tide turning management. According to the method, the cotton residues, the sawdust, the rice chaff, the corncob, the rice straw, the wheat bran and the lime are adopted to form the fruiting culture material, and a cultivation method of fruiting without earthing is combined, so that the working procedures of excavating, disinfecting, covering and the like of an earthing material are reduced, meanwhile, the quality of sporocarp is improved, the high-quality mushroom rate is improved to 72.2% from 35.3% of field cultivation, the cleanliness of the sporocarp is improved to 92.5% from 20.3%, and the yield of the sporocarp is improved. Meanwhile, cotton residues and rice straw are effectively utilized, economic and ecological benefits are remarkable, after the first flush of mushrooms is harvested, holes are punched in the bed surface, water is sprayed on the bed surface, the humidity of compost is effectively supplemented, and high-quality sporocarps can be produced all the year round.

The invention relates to the technical field of flammulina velutipes planting, in particular to a flammulina velutipes culture method and compost, which comprises the following steps: S1, preparing purple sweet potato water; the preparation method comprises the following steps: washing fresh purple sweet potatoes, mixing with water in proportion, boiling, cooling, filtering, and taking filtrate as purple sweet potato water for later use; s2, preparing a culture material; the raw materials comprise corncobs, rice bran, bran, cottonseed hulls, sugar beet pulp, soybean hulls, corn flour, brewer's grains, calcium carbonate and shellfish fossils. The preparation method comprises the following steps: weighing solid raw materials in proportion, stirring the raw materials in a stirrer for 10 minutes to obtain a mixture, uniformly mixing the mixture, adding the purple sweet potato water prepared in the step S1, fully stirring the mixture until the mixture is uniformly mixed, and controlling the water content of a final culture material to be 62-68% to obtain the culture medium. The purple sweet potato water is used for completely replacing tap water to serve as a culture material component, the purple sweet potato water is not only a solvent, but also a natural nutrient solution rich in anthocyanin, polysaccharide, vitamins and mineral substances, flammulina velutipes hyphae can absorb and convert the substances, and the anthocyanin content in sporocarp is remarkably increased.

The invention provides a composition and application thereof in ecological restoration, and the composition is granular and is prepared from glume of corncob, polyvinyl alcohol, sodium bentonite and water. The composition can keep soil moisture and improve the soil structure, the raw materials are biomass materials, water retention is achieved, food sources can be provided for microorganisms and soil animals in soil, microcirculation of moisture and soil organisms is formed around the composition, the soil organisms can further increase nutrients in the soil, and the soil quality is improved. Soil carbon-solid continuous increase of soil organic matters and aggregates is realized, and the method has great significance on ecological restoration.

The invention discloses a bidirectional clamping feeding type corn single ear thresher, which relates to the technical field of agricultural machinery and comprises a box body, the box body is divided into an upper cavity and a lower cavity through a workbench, clamping threshing devices are symmetrically arranged on the left side and the right side of the upper cavity, and an ear placing device is arranged between the two clamping threshing devices. A screen plate for screening corn kernels and corncobs is obliquely arranged in the lower cavity; the clamping and threshing device comprises a first sliding rail transversely arranged in the upper cavity, a clamping and threshing shell slidably clamped to the first sliding rail through a sliding rail base, and a first linear driving mechanism driving the clamping and threshing shell to reciprocate along the first sliding rail. The clamping and threshing module is arranged at the end, close to the ear placing device, of the clamping and threshing shell, and the composite driving mechanism is arranged in the clamping and threshing shell and drives the clamping and threshing module to move and rotate. According to the scheme, corn ears are clamped in a self-adaptive mode through the clamp, and feeding type or rotary rubbing type threshing is carried out through the self-adaptive cutter.

The invention belongs to the technical field of biomass resource utilization, and particularly relates to a production method for preparing high-activity humic acid based on corncobs, and the high-activity humic acid is prepared from the following raw materials in parts by weight: 10 parts of corncobs, 20-50 parts of DES and 40-80 parts of an oxidation substrate, the method comprises the following steps: performing microwave pretreatment on corncobs by using DES to realize activation and molecular depolymerization of humic acid precursor substances, catalyzing humic acid molecules to perform condensation reconstruction through an oxidation matrix and an electromagnetic heating process, and realizing one-step low-temperature preparation of high-activity humic acid and fulvic acid in a single reaction system. The production efficiency and the raw material utilization rate of agricultural and forestry waste recycling are greatly improved.

The invention discloses a method for preparing a pilose antler mushroom stick by using soybean hull residues and cattle feed, and the preparation method comprises the following steps: (1) pretreatment of soybean hulls: decomposing cellulose and hemicellulose in the soybean hulls by using an enzyme preparation to destroy the compact structure of the cellulose and hemicellulose; destroying bean skin cell membranes and fiber structures by using a high-voltage pulse electric field to form a porous structure; (2) activating a strain: performing slant inoculation on flammulina velutipes, and putting the flammulina velutipes into a liquid culture medium for shake-flask culture; (3) biotransformation of the pilose antler mushroom: putting the liquid strain in the liquid culture medium into the beancurd skin compound fungus bag, and obtaining a pilose antler mushroom stick after the bag is full; the beancurd skin compound bacteria comprise the following components in parts by weight: 45-55 parts of beancurd skin, 15-20 parts of corncob, 15-17 parts of bran, 13-15 parts of rice bran, 0.5-0.8 part of shell ash and 0.5-0.8 part of humic acid; the cattle feed is prepared from the following components in parts by weight: 180 to 220 parts of rapeseed meal, 120 to 160 parts of bran, 10 to 14 parts of shell ash, 0.4 to 0.8 part of table salt and 450 to 780 parts of needle mushroom sticks. The feed disclosed by the invention can effectively regulate the digestive ability and growth and development speed of cattle, and the growth and development speed of the fed cattle is averagely higher than that of cattle fed by conventional feed.

The invention discloses a pyrite coupled corncob mixed nutritional denitrification vertical flow artificial wetland system, relates to the field of sewage treatment and water ecological restoration, and relates to an artificial wetland. The invention aims to solve the problem that nitrate nitrogen pollutants in farmland recession enter peripheral surface water and underground water due to excessive application of nitrogen fertilizer. The artificial wetland system consists of wetland plants, a coarse sand layer, a functional layer and a gravel layer from top to bottom. According to the iron ore coupled corncob mixed nutritional denitrification vertical flow constructed wetland system, full supply of autotrophic and heterotrophic electron donors is realized in the integrated vertical flow constructed wetland, and high-efficiency treatment of wastewater with different types of carbon-nitrogen ratios is facilitated. The nitrate nitrogen removal rate and the TN removal rate can exceed 98% and 90% respectively.

The invention relates to the technical field of interior wall building decoration coatings, discloses an anti-condensation thermal insulation coating and a preparation method thereof, and aims at solving the problem that an existing anti-condensation coating is poor in thermal insulation effect. The coating is of a double-component structure, and the weight mixing ratio of a component A (liquid material) to a component B (powder material) is 1: (2.5-3.5); the component A comprises 28-42 parts by weight of water and 58-82 parts by weight of a self-made soil modifier, and the component B comprises 68-82 parts by weight of a modified soil mixture, 0.8-1.6 parts by weight of auxiliary agents such as sodium hexametaphosphate and functional filler. Through physical and chemical reaction between the component A and the component B, a three-dimensional reticular porous structure is formed, moisture absorption and skeleton effects of the modified corncob particles, the loofah sponge fibers and the like and a heat preservation and heat insulation synergistic effect of the hollow glass beads and the like are combined, so that anti-condensation, high moisture absorption, low heat conduction, cracking resistance and high bonding strength are achieved, waste can be turned into wealth, and the environment is protected.

The present invention discloses a method for co-producing bio-aviation fuel from corncobs, which comprises the following steps: screening and pulverizing corncobs to control the particle size to be 10-15 mm; mixing the pulverized corncobs with furfural production wastewater containing acetic acid for hydrolysis reaction to generate a dilute furfural solution at 195-205 °C and 1.25-1.3 MPa; subjecting the solid residue after hydrolysis to alkali treatment to separate and obtain crude cellulose; subjecting the crude cellulose to acidolysis reaction by microwave heating in a solid acid catalyst and formic acid solution to generate a dilute levulinic acid solution; catalytically polymerizing the dilute furfural solution and the dilute levulinic acid solution under the action of a copper-based catalyst to generate a C10-C15 hydrocarbon mixture; generating a C10-C15 saturated hydrocarbon liquid mixture through oil-water separation and deoxygenation and hydrogenation reaction of a nickel-based catalyst; and finally through fractional distillation and activated carbon filtration; this method realizes the efficient co-production of furfural, cellulose and bio-aviation fuel from corncobs, and has the advantages of high raw material utilization rate, excellent catalytic efficiency, low energy consumption and environmental friendliness.

The invention relates to the technical field of experimental animal feeding, in particular to a slow-release antibacterial experimental animal padding manufacturing formula which comprises a contact layer, a slow-release antibacterial layer and a bottom layer which form an experimental animal padding basic layer. The contact layer comprises 50% by mass of corncob particles, 30% by mass of paper pulp fibers, 15% by mass of super absorbent resin and 5% by mass of a bamboo fiber woven mesh. According to the animal padding manufacturing formula, the ammonia gas adsorption capacity is remarkably improved, cleaner and healthier survival conditions are provided for experimental animals, the lasting antibacterial effect is achieved, the welfare of the experimental animals and the accuracy of experimental data are further improved, the excellent adsorption and antibacterial capacity is achieved, and the animal padding has the good application prospect. Remarkable economic benefits are brought to experimental animal feeding mechanisms, the survival rate of experimental animals using the animal padding is increased by 5%, and the safety of the animal padding is further proved.

The invention relates to the technical field of biomass energy, and discloses a corncob acid-alkali step-by-step impurity removal high-yield enzymolysis saccharification method which comprises the following specific steps: preparing raw materials; carrying out acid and alkali two-step pretreatment; collecting the pretreated corncobs, and repeatedly washing the corncobs for multiple times until the corncobs are neutral to obtain washed corncobs; according to the method, the corncobs are pretreated in the two steps of acid and alkali, so that part of hemicellulose and lignin in the corncobs are removed, the porosity of the corncobs is increased, cellulose is moistened and expanded, the enzyme hydrolysis yield is increased, and the yield of glucose production is increased. According to the method, sodium hydroxide and calcium hydroxide are selected for combined pretreatment of the corncobs, so that the cost is lower, SO4 < 2 + > generated by acid treatment can neutralize Ca < 2 + > generated by alkali treatment, the cost is low, the environmental pollution is less, a corncob saccharification process with lower cost is provided, the enzymatic hydrolysate can be further fermented and converted into lactic acid and ethanol products subsequently by utilizing microorganisms, and the method is suitable for industrial production. The economic value is improved.

The invention discloses an engineering strain for producing xylitol through one-step whole-cell transformation of corncob xylan. The engineering strain comprises a recombinant escherichia coli strain for catalyzing the corncob xylan to produce the xylitol through a one-step method and a recombinant saccharomyces cerevisiae strain for catalyzing the corncob xylan to produce the xylitol through a one-step method. The invention provides a novel method for producing xylitol through double-enzyme synergistic effect and catalysis of corncob xylan by using double-enzyme co-expression engineering strain whole cells for the first time, the corncob xylan is hydrolyzed by using engineering strain cells, enzyme purification is omitted, the step of purifying xylose is simplified, the loss of xylose is reduced, and the yield of xylitol is increased. Xylose produced by engineering strain cell enzymolysis is directly used for producing xylitol. Wherein the content of xylitol produced by conversion of the engineering strain 2 by taking 10g / L of corncob xylan as a substrate is 7.65 g / L, and the yield of xylitol is 76.50%.