557 results about "Tannin" patented technology

The invention discloses a tea fertilizer preparation method based on microbial fermentation, and particularly relates to the field of tea compost, tea waste is crushed and wetted, and a nitrogen source and trace elements are added to optimize the carbon nitrogen ratio, so that a foundation is laid for the fermentation process; then, selected microbial strains are proliferated and purified, and the treated waste materials are uniformly inoculated with the selected microbial strains; in the fermentation process, the stability of fermentation conditions is ensured by controlling the temperature and the humidity; the tannin concentration and the pH value are monitored in real time, when the tannin concentration exceeds a preset value and the pH deviates from a normal range, the abnormal state of tannin degradation is evaluated and identified through a reaction activity index, an interference source is positioned through a sparse principal component analysis algorithm, and noise signals are removed; and after the interference source is positioned, the fermentation condition is adjusted in a targeted manner, so that the tannin degradation efficiency reaches the expectation, and the compost is maturely fermented and meets the fertilizer use standard.

The invention provides a supramolecular hydrogel packer constructed by interaction of a subject and an object as well as a preparation method and application of the supramolecular hydrogel packer, and belongs to the technical field of drilling fluid packing. The supramolecular hydrogel packer constructed by interaction of the subject and the guest comprises the following raw materials in percentage by mass: 12-36% of a copolymerization monomer, 6-10% of a tannic acid grafted polysaccharide aqueous dispersion, 0.5-1.5% of an initiator, 0.3-0.6% of a cross-linking agent and the balance of water, the total amount of the components is 100%. The raw materials are cheap, easy to obtain, simple in composition, low in cost, green, safe and environment-friendly; the preparation method is simple, mild in condition and easy to implement. After crosslinking, the obtained packer has excellent mechanical properties, temperature and pressure resistance and outstanding pH degradation capability, and can effectively pack a crude oil reservoir to form an integral sealing interlayer, so that heavy oil entering a shaft is reduced; meanwhile, degradation of the hydrogel can be effectively realized, and deblocking is achieved.

The present invention belongs to the technical field of biomass resource utilization and microbial fertilizers, and specifically relates to a fertilizer based on oil-tea camellia cattail, a preparation method and its application. The fertilizer described in the present invention is prepared by a collaborative fermentation process of Aspergillus niger, Phanerochaete chrysosporium and Bacillus subtilis. The obtained fermentation product is separated into solid and liquid to obtain a solid, the solid being a solid fertilizer, and the liquid being a foliar fertilizer after post-treatment. Both can be used for the cultivation of crops such as tangerines and oil-tea camellias. Based on the microbial collaborative fermentation process, the content of anti-nutritional factors tannin and tea saponin in the obtained solid fertilizer is significantly reduced, which is less than 1.8 g / kg and 0.1% respectively on a dry basis, while maintaining a seed germination index higher than 95%. According to a planting comparative test, the average yield per mu of oil-tea camellias using the solid fertilizer and liquid fertilizer obtained in this application increased by 12%. The average yield per mu of tangerines increased by about 11%, and the sugar, vitamin C, and trace element contents in tangerines were higher than those using traditional fertilizers.

The present invention relates to a pet sterilizer and deodorizer, which belongs to the technical field of pet deodorization. The present invention promotes the long-term expression of hop extract and enhances the sterilization and deodorization effect through the synergistic effect of hop extract, persimmon tannin, and lysozyme. Furthermore, the composition is stable, natural, and pollution-free, and can be used in the oral cavity and in vitro of animals. The present invention also provides zinc ricinoleate and an antibacterial agent. Through the three-phase interaction of zinc ricinoleate, hop extract, and antibacterial agent, the overall stability is enhanced and the antibacterial time of the complex is prolonged while ensuring antibacterial and deodorizing effects. The present invention also provides a modified quaternary ammonium salt antibacterial liquid. The modified quaternary ammonium salt has enhanced stability and, when present together with zinc ricinoleate, promotes an enhanced deodorizing effect. The present invention also provides an Artemisia annua extract, a Gentiana root extract, and an Artemisia argyi extract, which can eliminate odor sources and significantly inhibit bacterial growth, thereby having significant antibacterial, deodorizing, and odor-removing effects.

The invention provides a bean product fermentation influence factor analysis method and system, and relates to the technical field of food safety detection.The method comprises the steps that multiple sets of key parameters are set within a preset range, physical and chemical index changes under the parameters are monitored in real time, and the physical and chemical index changes comprise the tannin variation, the acid production capacity, the fermentation rate and the active enzyme variation; the method comprises the following steps: establishing a key parameter, constructing a physical and chemical index prediction model, training by taking the key parameter as input, evaluating a fermented bean product, training a sensory evaluation index prediction model by taking the physical and chemical index as input, and finally, determining an optimal combination of the key parameter through a genetic algorithm by taking maximization of the sensory evaluation index as a target, thereby optimizing a fermentation process. By setting and adjusting key fermentation parameters in real time and combining physical and chemical index monitoring and sensory evaluation, the purposes of optimizing the fermentation process and improving the final quality of bean products are achieved.

The invention discloses Klebsiella and application thereof, and belongs to the technical field of microorganisms. According to the invention, firstly, a strain LLMJ-DNXJ-01 with high yield of tannase is screened from wine-making yeast, the identification result shows that the strain belongs to klebsiella, then the tannase activity of the strain is investigated, and the result shows that the enzyme activity reaches 8.8 + / -0.02 U / mL. In addition, the invention also investigates the application of the strain in degrading sorghum tannin, the sorghum tannin degradation rate reaches 34.95%, and isoamyl alcohol, isopentenol, caryophyllene, phenethyl alcohol, 4-vinyl guaiacol and other volatile aroma substances with Daqu characteristics can be generated through fermentation. Therefore, by integrating the tannase production capability of the strain LLMJ-DNXJ-01 and the sorghum tannin degradation and fermentation aroma production capability, the strain has relatively good development potential in the aspects of manufacturing of reinforced yeast for making hard liquor and quality improvement and aroma enhancement of white spirit.

The invention provides a high-efficiency low-pollution cow dung returning treatment method, which comprises the following steps: adding corn straw and charcoal into cow dung, preparing a fermentation base material, inoculating a compound fermentation inoculant, and carrying out composting fermentation to prepare a cow dung organic fertilizer. The composite microbial inoculant adopts an inner and outer double-film coating structure, aerobic bacteria are embedded in the middle, are released in the early stage of composting, quickly enter a high-temperature stage and decompose and metabolize organic matters, anaerobic bacteria are embedded in the innermost layer, and an inner film coating material adopts composite modified waterborne polyurethane, so that the composite microbial inoculant has a good anti-bacterial effect. Azobenzene and waxberry tannin combined modification endows the membrane structure with the characteristics of low-oxygen cracking, normal-oxygen stability and no influence of enzyme, anaerobic bacteria are released under the low-oxygen condition in the high-temperature last stage and the decomposition period, decomposition of residual cellulose can be promoted, carbon and nitrogen loss caused in anaerobic fermentation is prevented, the speed of converting organic matter into humus is increased, and the yield of the organic matter is increased. Meanwhile, the inner film packing material reacts with the organic acid and the ethanol, so that the quality of the cow dung organic fertilizer is further ensured.

The utility model discloses an ice persimmon closed-loop heat pump dryer which comprises a drying chamber and a heat exchange system, and the drying chamber is provided with an air valve and a fan; the heat exchange system comprises a compressor, a condenser set, an electronic expansion valve and an evaporator which are sequentially connected and form a refrigerant circulation loop. The drying chamber has a high-temperature mode and a low-temperature mode, when the drying chamber is in the high-temperature mode, the air valve is closed, and when the drying chamber is in the low-temperature mode, the air valve is opened. Due to the indoor condenser and the outdoor condenser, the drying chamber can be flexibly switched between a high-temperature mode and a low-temperature mode, and the alternate operation mode not only can quickly and uniformly remove moisture in the persimmons, but also effectively reduces the tannin content in the persimmons. An air valve is arranged in the drying chamber and can change the flow direction of air in the drying chamber according to the working mode. Air flows through the heat regenerator twice and is heated / cooled, and the humidity is rapidly reduced in the process.

The invention relates to the technical field of water treatment, in particular to a method for preparing a quaternized modified tannin-based organic flocculant through irradiation grafting, a product prepared through the method and application of the quaternized modified tannin-based organic flocculant. The method comprises the following steps: (1) under the irradiation of 30-60 mW / cm < 2 > of ultraviolet light, adding brominated vinyl triphenylphosphine into a mixture of tannic acid and a photoinitiator for reaction; (2) adjusting the ultraviolet intensity to 5-20 mW / cm < 2 > for reaction; (3) closing the ultraviolet reaction; and (4) precipitating the product with ethanol, filtering and washing to obtain the quaternary phosphonium modified tannin-based organic flocculant. Wherein the photoinitiator is selected from one of benzophenone and benzoin dimethyl ether. The quaternized modified tannin-based organic flocculant provided by the invention can efficiently remove algae in a water body in an environment-friendly manner, and avoids secondary pollution caused by algae cell rupture at the same time.

The invention relates to the technical field of water treatment, in particular to a whisker type dication modified tannin-based organic flocculant as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) adding tetrabutylphosphonium bromide into an alkaline solution of tannic acid, and reacting at 50-80 DEG C for 2-4 hours; (2) dispersing the precipitate in water, continuously introducing nitrogen, adding a first free radical initiator at 50-80 DEG C for reaction, then adding dimethyl diallyl ammonium chloride and a second free radical initiator, and reacting for 2-4 hours; and (3) extracting by using a mixed solution of acetone and ethanol to obtain a precipitation product, filtering and washing to obtain the product. The quaternary phosphonium salt and the quaternary ammonium salt which have strong cationic property and good water solubility are grafted to the tannic acid step by step, so that the water solubility and the flocculation effect of the tannic acid are remarkably improved, meanwhile, the biodegradability and the environmental friendliness of the tannic acid are kept, and the technical effects of efficiently removing algae and cooperatively removing algal toxins can be achieved.

The present disclosure relates to Lactiplantibacillus plantarum for degrading tannins and saponins, and a use thereof. The present disclosure is intended to solve the problem that the existing silage has a low utilization rate due to anti-nutritional factors such as tannins and saponins. The present disclosure provides Lactiplantibacillus plantarum P91 with an accession number of CGMCC No. 27567, which has acid resistance, a high growth rate, a strong carbon source-utilizing ability, and an excellent comprehensive acid-production ability, and can reduce a pH, well improve the palatability of silage, and reduce anti-nutritional factors in silage. Therefore, the present disclosure can effectively solve the problem that a silage raw material has a high content of anti-nutritional factors such as tannins and saponins, and overcome the adaptability problem of a lactobacillus to a raw material, thereby improving an activity of the lactobacillus and a quality of silage fermentation.

The invention belongs to the technical field of radioactive wastewater treatment and uranium extraction from seawater, and discloses a high-flux cellulose immobilized tannin membrane adsorption material as well as a preparation method and application thereof. The membrane adsorption material comprises an aldehyde cellulose acetate microfiltration membrane and waxberry tannin which is cured on the microfiltration membrane through gradient cross-linking. The membrane adsorption material provided by the invention keeps a reticular porous structure of a cellulose microporous filter membrane and has the characteristics of high flux and rapid mass transfer, the pure water flux of a single-layer membrane can reach 300 L / (m.h), the treatment capacity of a multi-layer membrane is remarkably increased, large-flow treatment can be realized, and the efficiency of extracting uranium from seawater or uranium-containing wastewater is remarkably improved.

The invention discloses a tannin-based food deoxidizer and a preparation method thereof, and belongs to the technical field of food deoxidizers. The components of the tannin-based food deoxidizer at least comprise tannin, and can also comprise other hygroscopic substances and / or alkaline substances. The invention provides a technical scheme of taking tannin as a food deoxidizing agent for the first time, and the provided tannin-based food deoxidizing agent is high in deoxidizing amount and is a natural, green and non-toxic organic deoxidizing agent which does not need catalysts such as transition metal salt and the like. The invention also provides the tannin-based food deoxidizer and the preparation method thereof, and the provided preparation method is simple, convenient, efficient and suitable for wide popularization and application.

The invention belongs to the technical field of microbial fermentation, discloses a method for multi-bacterium synergistic fermentation of roxburgh rose juice, and particularly discloses a microbial agent which comprises rhizopus arrhizus CLF001 and at least one of pediococcus pentosaceus, lactobacillus plantarum, acetic acid bacteria, saccharomycetes and lactobacillus acidophilus. According to the microbial agent provided by the invention, the content of polysaccharide, polyphenol, brass and the like can be remarkably increased and the content of tannin in the roxburgh rose normal juice can be reduced by fermenting the roxburgh rose normal juice for 3 days by using the microbial agent, so that the fermented roxburgh rose normal juice does not feel obvious astringent taste, and the bitterness of the roxburgh rose normal juice is greatly improved; when the microbial agent is used for fermentation, polyphenol substances such as tannin with heavy astringent taste in the roxburgh rose normal juice are converted into non-astringent polyphenol substances, the taste of the normal juice is improved, the content of active ingredients is increased, for example, key ingredients (such as polyphenol, flavone and polysaccharide) capable of remarkably improving the antioxidant activity in the roxburgh rose normal juice can be used for improving the antioxidant performance of the roxburgh rose normal juice.

The invention discloses a Chinese gall leaven preparation method based on constant-temperature fermentation, and relates to the technical field of Chinese gall leaven preparation. The preparation method comprises the following steps: respectively and independently cleaning gallnut, distiller's yeast of white spirit and tea water, and removing non-medicinal parts, mildewed medicinal materials and impurities; the method comprises the following steps: uniformly mixing gallnut powder, distiller's yeast of Baijiu and tea leaves according to a mass ratio of (10-15): (0.5-1): (2-4), adjusting the moisture content to 40-45%, and spreading the mixture in a material tray; according to the method, constant-temperature fermentation equipment is introduced, so that the temperature in the fermentation process is always kept within the range of 26 + / -5 DEG C for 60-72 hours, and drying, crushing and briquetting are performed. Compared with the traditional natural fermentation process, the constant-temperature fermentation has the advantages that the tannin biotransformation efficiency is remarkably improved, the tannin content is greatly reduced, the gallic acid content is greatly improved, the curative effect is greatly improved, the sour and astringent taste of the product is remarkably improved, the fermentation time is greatly shortened, the production efficiency is improved, and the energy cost is reduced.

The invention discloses a method for improving the quality of a Tieguanyin tea extracting solution through segmented composite enzymolysis extraction, and belongs to the technical field of tea drink preparation. The method comprises the following steps: S1, performing low-temperature aroma extraction on Tieguanyin dry tea, and performing crushing so as to obtain crushed tea; s2, adding water and beta-glucosidase into the broken tea to carry out first-stage enzymolysis extraction, and separating to obtain tea aroma extract liquid and aroma-free tea residues; s3, water and composite hydrolase are added into the aroma-free tea residues for second-stage enzymolysis extraction, separation and filtration are performed, and a hydrolysis extraction solution is obtained; and S4, mixing the tea fragrance extract liquid with the hydrolysis extract liquid, cooling, centrifuging and filtering to obtain the Tieguanyin tea extract liquid. According to the method disclosed by the invention, the original flavor of the Tieguanyin is maintained, meanwhile, the fragrance and the mouth feel are remarkably improved, and the problems of fragrance loss and bitter taste caused by traditional high-temperature long-time extraction and cooked soup taste generated by tannase enzymolysis are avoided.

The invention relates to the technical field of food engineering, and discloses pediococcus acidilactici, a microbial agent containing the pediococcus acidilactici, application of the microbial agent, sorghum fermented food and a preparation method of the sorghum fermented food. The preservation number of the pediococcus acidilactici is GDMCC (China General Microbiological Culture Collection Center) No.65676, and the pediococcus acidilactici can be used for preparing the pediococcus acidilactici. The microbial agent contains pediococcus acidilactici and auxiliary bacteria. According to the sorghum fermented food obtained through fermentation treatment of the fungicide, antinutritional factors such as tannin in sorghum can be converted into urolithin, hydrolysis of protein, fat and starch can be promoted, the utilization rate of the sorghum is increased, the quality and flavor of fermented products are improved, the fermentation period is shortened, the shelf life is prolonged, and high economic benefits are achieved.

The invention provides a preparation method and application of tannic acid and panax notoginseng total saponins composite drug-loaded multifunctional hydrogel, and relates to the technical field of biomedical materials.Chitosan, one of the components of the hydrogel, is subjected to carboxymethylation modification to form carboxymethyl chitosan, the carboxymethyl chitosan and aldehyde-modified xanthan gum are subjected to a Schiff base reaction, and the hydrogel is prepared into the multifunctional drug-loaded tannic acid and panax notoginseng total saponins composite drug-loaded multifunctional hydrogel. Meanwhile, tannic acid and panax notoginseng saponins are loaded, and the composite hydrogel is obtained. The hydrogel loaded with the tannic acid and the panax notoginseng saponins, provided by the invention, carries the tannic acid and the panax notoginseng saponins as active substances, can keep the activity of the medicine for a long time, and has good injectability, self-healing property and wound exudate absorption property, the tannic acid can inhibit inflammatory response and reduce the generation and release of inflammatory factors, and the hydrogel loaded with the tannic acid and the panax notoginseng saponins can be used for treating wound exudate. The tannic acid has a wide antibacterial property, such as IL-1beta, IL-6, TNF-alpha and the like, and can inhibit the growth and reproduction of various bacteria, including common pathogenic bacteria such as staphylococcus aureus, escherichia coli and the like.

The invention relates to a salt-resistant biomass interface evaporation material as well as a preparation method and application thereof, and relates to the technical field of interface evaporation materials. The preparation method comprises the following steps: mixing sunflower fiber dispersion liquid, polyvinyl alcohol and carbon-containing molybdenum disulfide, then adding glutaraldehyde, then carrying out liquid nitrogen freezing and freeze drying, sequentially soaking with a tannic acid solution, a calcium chloride solution and a ferric chloride solution, and then carrying out freeze drying. Natural sunflower fibers are used as a main framework, cotton is used as a supporting material, carbon-containing MoS2 is prepared and crosslinked with polyvinyl alcohol, a hydrophilic functional layer is constructed on the surface of the material through tannic acid, and the tannic acid is coordinated and complexed with Ca and Fe < + >, so that a more stable hydrophilic complexed coating is formed on the surface of the material; the surface wettability and the water conveying capacity of the material are further improved, meanwhile, salt crystal deposition and precipitation in the seawater evaporation process are effectively inhibited, and the oxidation resistance and the seawater corrosion resistance of the material are improved.

The invention discloses a plant lactobacillus IMAUYHD26, application of the plant lactobacillus IMAUYHD26 and a method for degrading sainfoin condensed tannin, the plant lactobacillus IMAUYHD26 is classified and named as plant lactobacillus, the plant lactobacillus IMAUYHD26 is preserved in the China Center for Type Culture Collection, the preservation time is November 11, 2024, and the preservation number is CCTCC NO: M 20242507. The degradation rate of the screened plant lactobacillus IMAUYHD26 on the sainfoin condensed tannin reaches 76.73%, and the utilization value of the sainfoin condensed tannin or a feed containing the sainfoin is effectively improved.

The invention relates to the technical field of biological medicine, in particular to anti-acne hydrogel and a preparation method thereof. The anti-acne hydrogel is prepared from metal-polyphenol network nanoparticles and a hydrogel base material, the metal-polyphenol network nanoparticles comprise a first polyphenol compound, a second polyphenol compound and metal ions, the first polyphenol compound is a tannic acid compound, and the second polyphenol compound is a flavonoid compound; the hydrogel base material comprises a hydrophilic high-molecular polymer and a cationic polymer. The metal-polyphenol network nano-particles are creatively utilized, the anti-inflammatory and anti-oxidation activity of flavonoid compounds, the convergence and protein binding characteristic of tannin and the antibacterial activity of metal ions are integrated at the same time, and the vicious circle of acne can be intervened at the same time from multiple links of antibacterial, anti-inflammatory, anti-oxidation and keratinization adjustment; and the defect of single action target spot of the existing medicine is overcome.

The invention relates to an instant composition with a long-acting oral health-care function for dogs and cats as well as a preparation method and application of the instant composition, and belongs to the technical field of pet food and pet oral care. The composition comprises 20%-30% of whey protein powder, 10%-20% of hydrolyzed gelatin, 1%-3% of low-molecular-weight chitin saccharide gum, 1%-2% of modified cassava starch, 2%-5% of sodium alginate, 1%-3% of fructo-oligosaccharide, 0.03%-0.08% of lysozyme, 0.03%-0.08% of tea polyphenol, 0.05%-0.15% of zinc gluconate, 0.05%-0.1% of persimmon tannin, 3%-5% of tuna hydrolysate, 4%-6% of whole goat milk powder, 2%-4% of skim yoghurt powder and the balance water. The added active ingredients have long-acting slow-release and continuous effects in the formula, oral pathogenic bacteria can be effectively inhibited, dental plaque and dental calculus formation can be reduced, halitosis can be lastingly relieved, and the toothpaste has good market competitiveness.

The invention discloses a method for brewing high-quality antioxidant Luzhou-flavor liquor in a semi-solid state. The method comprises the following steps: separating glutinous sorghum serving as a wine brewing raw material into sorghum rice and sorghum peel through rice milling, recovering residual starch in the sorghum peel by adopting alpha-amylase and saccharifying enzyme, releasing different tannins by adopting cellulase, and depolymerizing tannin dissolved in the sorghum peel and a solution by adopting laccase to release tannin with different structures, so as to obtain tannin enzymatic hydrolysate; the enzymatic hydrolysate is added into the steamed peeled sorghum rice according to a certain proportion, so that the thermal destructive effect of the steamed material on tannin in the sorghum rice is avoided; and adding yeast for making the white spirit in a semi-solid state to obtain the white spirit which has the antioxidant activity exceeding 80% compared with that of the existing white spirit and meets the national standard of semi-solid Luzhou-flavor white spirit. Compared with the traditional baijiu brewed by steaming sorghum, the total ester content of the baijiu brewed by adding the tannin enzymatic hydrolysate is increased by 87.50-102.27%, the free radical scavenging rate of DPPH is increased by 134.16-158.71%, and the content of guaiacol substances (4-ethyl guaiacol and guaiacol) is increased by 160.69-166.90%.

The invention discloses a galiaceae-euphorbia tripsacus compound extract as well as a preparation method and vagina repair application thereof. The compound extract is prepared from galiaceae herbs and euphorbia tripsacus according to a scientific ratio through compound enzymolysis pretreatment, gradient ethanol solvent step-by-step extraction and double-resin series purification. According to the preparation method, the dissolution rate of the active components is remarkably increased by utilizing an enzymolysis wall breaking technology, the problem that the purity of the multi-polar components (tannin, flavone and polysaccharide) is difficult to increase and extract at the same time is solved through gradient extraction and series purification, and the purity of the total active components is more than or equal to 60%. The obtained composite extract has multiple effects of astringing and tightening, promoting regeneration of elastic fibers and improving contractility of smooth muscles, and is safe and non-irritant. The invention further discloses targeted sustained-release gel containing the extract, and the targeted sustained-release gel can be used for improving vaginal relaxation and deeply repairing private parts.

According to the present invention, there is provided a method for the production of an adhesive, said method comprising the following steps: a) providing lignin rich carbohydrate complexes (LCC) by pressurized hot water extraction of softwood biomass, preferably biomass of Norway spruce or Scots pine, or of hardwood biomass, preferably biomass of Birch or Beech, providing bark lignin rich carbohydrate complexes (BLCC) by pressurized hot water extraction of softwood bark, preferably bark of Norway spruce or Scots pine, or providing liquefied biomass by acid-catalyzed liquefaction of biomass including wood saw dust, agricultural residues, plant stalks, recycle carton boards, recycle paper, recycle wood, wood panels, and wood bark side streams, in polyhydric alcohols and phenols; b) reacting the LCCs, BLCCs, or liquefied biomass obtained in step a) with a crosslinking or catalytic agent selected from the group consisting of: carboxylic agents including citric acid, dicarboxylic acids including adipic acid, organic acid anhydrides, tannin, tannic acid, plant derived fatty acids including suberin, and hexamethylenediamine, in order to produce said adhesive. The present invention is also directed to an adhesive produced by the method of the invention and to the use thereof as a bonding agent in wood products or as a coating agent in wood products or mineral wool.

This invention relates to the Neurospora crassa strain DZ01 and its application in fermented Eucommia ulmoides leaf feed. It effectively solves the problem of significantly increasing the content of nutrients and bioactive components in Eucommia ulmoides leaf feed by using Neurospora crassa strain DZ01, while effectively reducing the content of anti-nutritional components such as lignocellulose, tannins, and phytic acid, thus greatly improving the feed value and health benefits of Eucommia ulmoides leaves for livestock and poultry. A Neurospora crassa strain DZ01, with preservation number CGMCC No: 40194, combines liquid fermentation of seed culture with solid-state fermentation, resulting in high biomass yield per unit volume, richer metabolites in the solid-state fermentation culture, low water content in the culture medium, no need for wastewater treatment, and less environmental pollution, meeting the national needs for developing ecological agriculture and pollution-free food industrialization.

The invention discloses a plant lactobacillus strain having antagonistic properties against aquatic pathogens and the preparation and application of the same, belonging to the field of microbial technology. Lactobacillus plantarum) FF34 has a wide range of carbon and nitrogen sources for fermentation, has amylase activity, and can utilize starchy carbon sources. It degrades nitrite quickly and has antagonistic effects on a variety of common aquatic pathogens. FF34 single bacterial agent is prepared, or mixed with a variety of Bacillus to prepare FF34 composite agent. FF34 single bacterial agent or composite agent is used to ferment fish, shrimp, crab feed and cottonseed meal and other feed raw materials, which significantly improves the nutritional content of feed. The resulting fermented feed is rich in probiotics, acid-soluble proteins and active small peptides, and the content of anti-nutritional factors such as tannins, free cottonphenol, and phytic acid is reduced; adding FF34 agent to feed promotes the growth of intestinal tissue of aquatic animals, improves liver function, improves antioxidant activity, improves the growth performance of farmed animals, and reduces feed coefficient. After the FF34 composite agent is immobilized and placed in the aquaculture water body, it can continuously improve water quality.

The invention discloses application of tannin compounds in preparation of drugs for resisting porcine reproductive and respiratory disorder viruses. The inventor of the invention performs activity screening on natural tannin compounds, and finds that the tannin compounds as shown in the formula 1 have excellent anti-PRRSV activity, and the EC50 value of the tannin compounds to PRRSV is lower than or obviously lower than that of ribavirin; therefore, the inhibiting effect of the compounds on the PRRSV is greater than or even far greater than that of a positive control drug ribavirin. The compounds have an unexpected effect of resisting PRRSV (porcine reproductive and respiratory syndrome virus).

The invention relates to the technical field of traditional Chinese medicinal material production, in particular to a green prevention and control method for main leaf pests of tetranychus urticae and tetranychus crataegi in the under-forest ecological planting process of polygonatum sibiricum, and the method comprises the steps of S1, egg overwintering prevention and control, S2, non-host plant repelling, S3, biological agent killing, S4, agronomic measure blocking, and S5, late autumn tannin insect prevention and egg inhibition. Aiming at the technical problem of prevention and control of leaf mites of polygonatum sibiricum, from the perspective of sustainable development of traditional Chinese medicine ecological agriculture, an ecological technology is used in comprehensive treatment of leaf pests of polygonatum sibiricum, a green prevention and control implementation path for tetranychus urticae and tetranychus crataegus is provided, pollution of agricultural chemicals can be reduced, and the environment-friendly prevention and control of leaf mites of polygonatum sibiricum is realized. Meanwhile, green forest ecological traditional Chinese medicine products are produced, the rhizome yield per unit area is increased by 9.26%, it is ensured that the first-grade product rate is higher than that of conventional cultivation by 13.58% or above, and economic benefits are improved.

The invention relates to the technical field of oily sewage treatment, and discloses a flocculant as well as a preparation method and application thereof. The flocculant contains a component A, a component B, a component C and a component D, the component A contains etherified starch and nano magnetic iron oxide, the component B contains sodium bentonite and nano magnetic iron oxide, the component C contains tannin modified chitosan and nano magnetic iron oxide, and the component D contains carbonate, citric acid and auxiliary materials. The flocculant is easy to store, does not need to be compounded on site, flocculates quickly in water, only needs 60-120 seconds in flocculation time, and has an excellent flocculation effect; the emergency requirement of an accident site can be met, and the good popularization value is achieved; the method is suitable for an oil-containing sewage system with coexistence of anions and cations, can also adapt to a wide pH range, is good in salt resistance and has a good dehydration and filtration aiding effect.