91 results about "Microbial enzymes" patented technology

The invention discloses a composite microbial enzyme preparation and a preparation method thereof, and belongs to the technical field of bioplastic degradation. The enzyme preparation is synergistically constructed through a temperature-sensitive MOFs / Schiff base network composite carrier and black phosphorus quantum dots, FeO (at) ZIF-8 is taken as a core, and PNIPAM is grafted on the surface to form temperature-responsive MOFs; constructing a three-dimensional network carrier through Schiff base crosslinking of the CMC and the CNF; the complex enzyme is loaded on MOFs pore channels and then is embedded in a carrier network together with the black phosphorus quantum dots. The temperature-sensitive MOFs open pore channels to release enzyme when the compost is heated, and the Schiff base network dissociates secondary released enzyme under an acidic condition; the black phosphorus quantum dots promote enzyme activity and strengthen carrier response through a photothermal effect; the compound enzyme contains cutinase, alkaline lipase, neutral lipase, alpha-amylase, saccharifying enzyme, cellulase, laccase and protease, and can synergistically degrade PLA, PBAT and starch-based plastic. According to the invention, dual environment response controlled release, photo-thermal synergistic catalysis and synergistic degradation of the enzyme preparation are realized, and the plastic degradation period is shortened under the composting condition.

The invention relates to the technical field of advertisement display, decorative materials and environment-friendly materials, in particular to a degradable advertisement inkjet film and a preparation method thereof.The degradable advertisement inkjet film comprises a glittering ink absorption layer, a degradation starting layer and a main body layer arranged between the glittering ink absorption layer and the degradation starting layer; 1%-2% of an ultraviolet light absorber; and the like. According to the degradable advertisement jet drawing film, by means of the three-layer structural design, the perfect combination of the advertisement effect and environment-friendly degradation is achieved, the flash ink absorption layer provides the unique visual effect, meanwhile, the graphene nanosheet modified titanium oxide photocatalytic layer can catalyze the degradation process under illumination, the main body layer guarantees the mechanical and printing performance of the film, and the degradable advertisement jet drawing film has the good application prospect. And the degradation starting layer realizes rapid degradation through a microbial enzyme complex, and particularly, the graphene nanosheet modified titanium oxide photocatalytic layer is used as a key technology, so that the degradation rate of the advertisement film is remarkably improved.

The present invention relates to functional foods and dietary supplements comprising a specific diamine oxidase (DAO) enzyme derived from Glutamicibacter halophytocola, uses of said enzyme and respective methods for the production of biogenic amine-depleted products, uses of said enzyme as a biosensor for the analysis of one or more biogenic amine(s), as well as said enzyme for use in medicine, in particular for use in the prevention or treatment of a condition or disease that is associated with increased levels of biogenic amines.

The invention discloses a microbial odor remover suitable for environment and a preparation method thereof, and relates to the technical field of daily chemical products. The preparation method comprises the following steps: adding pediococcus acidilactici and bacillus velezensis into a citric acid-disodium hydrogen phosphate buffer solution according to a ratio, standing and activating, adding bromelain, lipase, rosmarinic acid nanoemulsion, tea polyphenol and citrus polyphenol-EDTA (Ethylene Diamine Tetraacetic Acid) mixture, homogenizing, adding konjac glucomannan-chitosan gel and a trehalose-glycerol compound according to a ratio, stirring, filtering, and drying to obtain a finished product. And subpackaging in a dark place to prepare the microbial odor remover suitable for the environment. Through the synergistic effect of microorganisms, enzymes and a natural deodorization medium, a multi-stage peculiar smell elimination system is constructed, the dual functions of immediate neutralization and continuous bacteriostasis are achieved, the application scene is wide, corrosion and residues to base materials such as fabric and plastic are avoided, and the concentration of harmful gas can be more effectively controlled and pathogenic microorganisms can be inhibited in large-scale breeding application.

The invention provides a treatment process for removing harmful substances in meat products, and relates to the technical field of meat product treatment. The treatment process for removing the harmful substances in the meat product comprises the following steps: S1, raw meat pretreatment; S2, treatment liquid soaking; S3, centrifugal separation; and S4, post-treatment. Microbial enzymes comprise lipase used for decomposing fat, protease used for degrading pollutants combined with protein, antioxidant enzyme used for scavenging free radicals and lactamase used for specifically degrading antibiotics, treated meat can become unsaturated fatty acid, intake of the unsaturated fatty acid in the human body is small, digestion is fast, and therefore people are not prone to being thick in blood and high in blood pressure.

The invention relates to the technical field of fermented bean products, in particular to fermented bean curd rich in nattokinase and a preparation method of the fermented bean curd. Comprising the following steps: carrying out strain activation and enlarged culture on bacillus natto, centrifuging, and removing supernatant to obtain a bacillus natto precipitate; uniformly mixing mucor and bacillus natto precipitates with sterile water in proportion to prepare a strain suspension; preparing a bean curd blank, spraying the strain suspension, and carrying out primary fermentation to obtain a bean curd blank; spreading table salt on the surface of the bean curd blank to pickle the bean curd blank to obtain a salted blank; preparing a soup base, inoculating the bacillus natto precipitate, fermenting, and preparing a fermented bean curd soup base; and putting the salt blank and the fermented bean curd soup base into a container, sealing, and carrying out post-fermentation under the condition of constant temperature, so as to obtain the fermented bean curd rich in nattokinase. The method has the advantages that the biological activity of the nattokinase in a salt environment is improved by a method of reducing the use amount of the salt and performing multiple fermentation on the bacillus natto; and a fermentation microbial enzyme system is enriched.

The invention relates to the technical field of saline-alkali soil sampling, in particular to a saline-alkali soil sampling device and a sampling method.The saline-alkali soil sampling device comprises a drill gun and a drill bit arranged on one side of the drill gun, a drilling assembly is arranged on the drill bit, and sampling assemblies are arranged in the drill bit in an array mode; the sampling assembly is used for performing depth positioning sampling on a soil sample in the saline-alkali soil, a built-in cylinder is arranged in the drill bit, the depth of a sampled soil layer can be consistent, it is ensured that when the soil is sampled, the taken-out soil sample is located on the same horizontal plane of the saline-alkali soil, and the accuracy of subsequent data cannot be affected; meanwhile, the soil on the cutting plate is stored in the collecting box through falling of the collecting box, so that the situation that cross contamination occurs when the soil sample is taken out of the ground to be stored is avoided, and microorganisms, enzyme activity, organic substances and the like in the soil cannot be influenced by factors such as light and oxygen to be changed.

This invention relates to the field of low-temperature fermentation formulation technology. The invention provides a low-temperature resistant compound bacterial enzyme formulation, its preparation method, and its application in the co-fermentation of straw and manure. The compound bacterial enzyme formulation comprises the following raw materials in parts by weight: 8-10 parts of compound bacterial agent, 1-1.4 parts of compound enzyme agent, and 88.6-91 parts of excipients. The compound bacterial enzyme formulation of this invention can ferment straw and manure under conventional conditions as well as at low temperatures of around 15°C, effectively meeting the fermentation requirements in low-temperature regions. By combining the excipients with the bacteria and enzymes, substances and nutrients during the fermentation process can be effectively adsorbed, avoiding acid inhibition, and providing attachment sites for the bacteria and enzymes, thus prolonging their activity.

The invention relates to the technical field of microbial enzymes, in particular to a preparation method of a medicinal and edible health care product based on marine biological enzymes, which comprises the following steps: estimating the type and quantity of target enzymes according to production requirements to obtain a first estimation result, performing large-scale production according to the first estimation result, and performing purification and activity protection to obtain the marine biological enzyme-based medicinal and edible health care product. The preparation method comprises the following steps: preparing a first preparation raw material, pre-estimating the variety of target medicinal and edible plants and the number of the target medicinal and edible plants according to production requirements to obtain a second pre-estimation result, performing pretreatment and low-temperature extraction according to the second pre-estimation result to obtain a second preparation raw material, and compounding and mixing the first preparation raw material and the second preparation raw material to obtain a finished product. And detecting the medicinal and edible products, and adjusting the activity protection according to the detection result. The preparation efficiency of the product is improved while the activity of the marine biological enzyme is ensured.

The invention relates to a biological fermentation agent for peach tree branches as well as a preparation method and a use method of the biological fermentation agent. The fermentation agent comprises a compound microbial enzyme inoculant, a biological source soil conditioner and urea, the volume ratio of the compound microbial enzyme inoculant diluent to the peach tree branch raw material is 1000 L: 1 m < 3 >; the ratio of the biological source soil conditioner to the urea to the compound microbial enzyme inoculant diluent is 1 kg: 5 kg: 1000 L. The biological fermentation agent for the peach tree branches is used for stacking, fermenting and decomposing the peach tree branches. When in use, the biological source soil conditioner, urea and a peach branch material are uniformly mixed in proportion, and meanwhile, the compound microbial enzyme inoculant diluent is sprayed. Through micro-aerobic fermentation, rapid fermentation and decomposition of the peach branches are realized, the obtained peach branch humus and the extract thereof have no inhibition effect on germination of cucumber seeds, the seed germination index is greater than or equal to 85%, and the peach branch humus can be safely returned to the field or used as a culture medium to provide available organic matters and improve soil.

The present invention relates to the field of fertilizers, and specifically discloses a small molecule peptide organic composite synergistic foliar fertilizer and a preparation method thereof. The foliar fertilizer comprises the following raw materials, calculated by mass percentage of 100%, including 2-6% small molecule peptides, 15-25% fulvic acid, 4-7% microbial natural active enzymes, 3-8% adhesives, 1-3% stabilizers, and the remainder is deionized water; the adhesive is prepared by oxidation and phosphorylation of non-monosaccharides. The composite synergistic foliar fertilizer of the present invention is mainly composed of small molecule peptides, fulvic acid and microbial natural active enzymes, and improves the growth quality of plants through the interaction between the three, and improves the utilization rate of foliar fertilizer on the leaf surface through the adhesive.

The application relates to a crisp type pre-conditioned food of tussah pupae and a preparation method thereof. The method is characterized in that fresh tussah pupae are used as raw materials, a series of processing technologies such as spraying and moisturizing of organic acid, temperature control, inorganic acid immersion and killing, microbial-enzymatic treatment of tussah pupae, pickling and baking are combined to prepare the crisp type pre-conditioned food of tussah pupae, the method is simple in operation, can change the permeability of the chitin shell of the tussah pupae, increase the migration rate of the seasoning, reduce the proportion of the burst plasma, and simultaneously reduce the oil oxidation caused by repeated baking treatment.

The application provides a low-cost artificial feed for domestic silkworms and a preparation method thereof, and relates to the technical field of domestic silkworm breeding.The low-cost artificial feed for domestic silkworms is composed of mulberry leaf powder, corn powder, organic acid, sitosterol, microorganisms, enzyme preparation, vitamins, minerals and the like, and can effectively improve the stress resistance of the domestic silkworms, and improve the silk production rate of the silkworms and the quality of the silk.

The invention discloses a kind of HY4-25 and its application in the extraction of total flavonoids from lotus leaves. Before the total flavonoids are extracted from lotus leaves by ethanol ultrasonic extraction, the crude enzyme solution prepared by microbial fermentation is added for enzymatic hydrolysis. The enzyme-producing microorganism Aspergillus niger HY4-25 used is purposefully screened for being able to hydrolyze the cell wall of lotus leaves. The fermentation liquid cultivated by enzyme production contains a variety of hydrolases, which can synergistically hydrolyze substances such as cellulose and pectin in lotus leaves, damage the cell wall, and help dissolve flavonoids. The extraction yield of total flavonoids is significantly improved. The method for enzymatic hydrolysis of lotus leaves provided by the present invention can increase the yield of total flavonoids extracted from lotus leaves by 36.3% compared with the direct use of ethanol ultrasonic extraction method.

The invention discloses tea wine brewed by fermenting tea leaves and a preparation method of the tea wine, and belongs to the technical field of tea wine production. The tea wine comprises the following components in parts by weight: 15-30 parts of tea leaves, 0.3-0.8 part of distiller's yeast, 7-12 parts of white spirit and 35-60 parts of metasilicic acid ionized water. The preparation method of the tea wine comprises the following steps: soaking the tea leaves in water in parts by weight, then performing constant-temperature fermentation at 22-30 DEG C, adding the distiller's yeast for primary fermentation, then adding the distiller's yeast and the white wine again, performing uniform stirring, performing secondary fermentation, and performing constant-temperature distillation to obtain the tea wine. According to the method, tea leaves, distiller's yeast and other raw materials are mixed and fermented to produce the tea wine, the distiller's yeast is prepared by mixing multiple Chinese herbal medicine pure plants and distiller's yeast strains, and in the fermentation process of the tea leaves, multiple microorganisms, enzymes and enzymes, probiotics and amino acids with Chinese herbal medicine as matrixes are generated.

The present invention discloses a strain of Fusarium graminearum (Fusarium graminearum) AY2-19 and its application in extracting total flavonoids from mugwort. Fusarium graminearum AY2-19 is deposited in Guangdong Province Microbial Culture Collection Center, with deposit number GDMCC No: 63062 and deposit date December 20, 2022. Before extracting total flavonoids from mugwort ethanol ultrasonic method, the crude enzyme solution prepared by fermentation of Fusarium graminearum AY2-19 is added. Because the crude enzyme solution contains a variety of hydrolases, it is possible to synergistically hydrolyze substances such as cellulose, hemicellulose and pectin in mugwort, damage the cell wall, contribute to the dissolution of flavonoids, and significantly improve the total flavonoid extraction yield. The method for extracting total flavonoids from mugwort by microbial enzymolysis assisted by the present invention is more directly compared with the use of ethanol ultrasonic extraction method, and the yield of total flavonoids extracted from mugwort can be increased by 25.2%.

The present invention relates to improved microbial enzymes with transfructosylation activity for efficient and cost-effective production of fructo-oligosaccharides. More specifically, the invention is directed towards obtaining mutant FTase family of genes from genus Aspergillus. Nucleic acids, peptide sequences, mutant proteins, vectors and host cells for recombinant expression of novel FTases are also provided. Various mutations, such as but not limited to point mutations and deletion mutations as well as combinations thereof are presented herein. The invention also relates to a process for the expression of a novel recombinant FTase mutants as a secreted protein. The enzymes exhibit high purity after filtration, which eliminates the need for costly chromatographic procedures.

The invention provides a fermented corncob as well as a preparation method and application thereof, and belongs to the technical field of ruminant nutrition and feed science. The fermented corncob is prepared from the following raw material components in parts by mass: 32 to 42 parts of corncob, 2.5 to 5 parts of soybean meal, 3 to 5 parts of cottonseed meal, 2 to 4 parts of wheat bran, 2 to 5 parts of rice bran, 2 to 5 parts of glucose, 2.5 to 5 parts of cane molasses, 0.2 to 0.5 part of expanded urea, 2 to 4 parts of attapulgite powder, 0.4 to 0.6 part of compound bacterium enzyme mixture, 0.3 to 0.5 part of feed-grade sodium chloride, 0.3 to 0.5 part of feed-grade magnesium oxide and 34 to 42 parts of water. The corncob and other raw materials are subjected to mixed fermentation through combination of various bacteria and enzymes, so that the nutritional value and the nutritional level of the feed are improved. The fermented corncob can replace part of corn in the feed, the production performance is improved, the feed cost is reduced, resource recycling is effectively promoted, and the palatability of the feed is improved.

The invention relates to the technical field of preparation of microbial enzyme preparations, in particular to a microbial enzyme preparation for polyester plastic degradation and a preparation method of the microbial enzyme preparation. The present invention relates to a microbial composition comprising at least one microbial strain engineered to enhance PETase expression and maintain activity under hypoxic conditions, and a nanocarrier, and also comprising chitosan. The expression level of microorganisms on PETase is enhanced through gene modification, the degradation efficiency of polyester plastics is improved, a nano-carrier material and a chitosan protective film are introduced, the stability and bioavailability of the enzyme preparation are improved, and the prepared microbial enzyme preparation can keep activity in a low-oxygen, illumination or complex environment, and can be used for preparing a biological enzyme preparation. And secondly, the whole preparation process does not depend on harmful chemicals, the green chemistry principle is met, and environmental protection and resource recycling are facilitated.

The present invention is provided methods of screening for polymer-degrading enzymes and microorganisms, enzymes or microorganisms variants which display increased activity towards native or / and synthetic polymers.

The invention discloses a microbial enzyme synergistic pymetrozine and nitenpyram water dispersible granule which comprises the following components in percentage by weight: 40-70% of a pymetrozine active compound, 10-25% of a nitenpyram active compound, 1-10% of microbial enzyme, 1-15% of a dispersing agent, 1-10% of a wetting agent, 1-10% of a stabilizer, 1-10% of a buffer solution, 2-10% of an adhesive and the balance of a carrier. The invention also provides a preparation method of the composition. Compared with the prior art, the synergistic water dispersible granule has the advantages that the epidermis or digestive system of pests is destroyed by enzyme generated by specific microorganisms, and the pymetrozine and nitenpyram are combined to form the synergistic water dispersible granule, so that the control effect can be improved, the use of chemical agents can be reduced, and the water dispersible granule is short in disintegration time and low in cost. The suspension rate is greater than or equal to 90%, and the suspension can be used for unmanned aerial vehicle flight prevention and adapts to different water quality conditions.

The invention relates to the technical field of feed, and discloses a feed compound microorganism enzymolysis method and enzymolysis device.The method comprises the following steps that S1, a feed base material smashed to 20-40 meshes and a compound enzyme preparation are premixed according to the mass ratio of 100: (0.3-0.8), and a premix is obtained; s2, continuously feeding the premix into enzymolysis equipment, and carrying out enzymolysis reaction for 15-30 minutes under the conditions that the temperature is 35-42 DEG C and the dissolved oxygen value is greater than or equal to 2mg / L; s3, after the enzymolysis is completed, adding a compound microorganism bacterial liquid into the enzymolysis equipment on line, adjusting the pH value of the system to 5.8-6.2, and continuing to ferment for 2-4 hours; and S4, after fermentation is completed, drying the materials at low temperature until the moisture content is less than or equal to 12% to obtain a finished product. Enzymolysis and fermentation processes are organically combined, enzymolysis and microbial fermentation are performed in stages under the condition of strictly controlling temperature, dissolved oxygen and pH, the release rate and bioavailability of nutrient substances in the feed are remarkably improved, and the method has the advantages of short reaction time, high efficiency, high condition controllability, low moisture content of a finished product, easiness in storage and the like.

The invention relates to an automatic multi-temperature-control microplate reader based on integration of a mechanical arm and artificial intelligence (AI), and aims to improve automation and accuracy of microbe growth monitoring and analysis. Operation such as culture dish taking and placing, culture solution adding and timing sampling can be automatically completed through the mechanical arm. The AI algorithm automatically adjusts parameters such as culture temperature, humidity, illumination and the like according to real-time data and environmental conditions so as to optimize the growth environment of microorganisms. Meanwhile, key indexes such as a light absorption value and cell density are monitored, a microorganism growth curve is drawn in combination with AI analysis, and important parameters such as the growth rate and the maximum growth amount are calculated. The AI can also mine potential laws in the data and provide valuable research information. The instrument improves the efficiency, accuracy and reliability of microbiological research, is widely applied to the fields of microbiological growth law research, resource development, disease diagnosis and the like, and promotes related technical progress.

The invention relates to the field of application of microorganisms in livestock and poultry breeding sewage, in particular to a process for screening and separating various different microorganism strains in the livestock and poultry breeding sewage, inhibiting pathogenic bacteria and producing enzyme and culturing. The provided bacillus subtilis VK18 (GDMCC NO: 65825) and bacillus velezensis VK14 (GDMCC NO: 65979) are both preserved in Guangdong Province Microbial Culture Collection Center, the strains have uniqueness, the viable count of the two strains is high, and the two strains can secrete lipase, amylase and protease through preliminary screening; the lipase, the amylase and the protease with higher activity can be obtained by optimizing two microbial enzyme production culture conditions, such as temperature, time and pH, supplementing exogenous bacterial preparations with different proportions and volume ratios and the like; meanwhile, the antibacterial agent has a specific antibacterial effect, can generate an inhibition zone on specific pathogenic bacteria, effectively inhibits proliferation of the pathogenic bacteria, changes a flora structure of livestock and poultry breeding sewage and reduces the risk of secondary pollution of the sewage; a strain source is provided for subsequent industrial application.

The invention relates to a liquid microbial enzyme as well as a preparation method and application thereof. The liquid microbial enzyme is prepared by taking soybean meal, fish meal, rice husk and water as raw materials, sterilizing and fermenting through a compound microbial agent, and the compound microbial agent comprises bacillus subtilis, bacillus licheniformis and bacillus velezensis. In the application, the soybean meal serves as a core nitrogen source and an energy source, soybean isoflavone of the soybean meal promotes functional bacteria to proliferate and enhances enzyme activity, and a fiber structure can optimize fermentation conditions; the fish meal provides high-quality protein which can be decomposed to generate organic acid, so that the pH value is reduced, and putrefying bacteria are inhibited; the rice husks maintain the material structure, and the porous characteristic improves ventilation and adsorbs peculiar smell; the bacillus velezensis as an auxiliary enzyme source can enhance the variety coverage of soluble enzymes, so that the substrate degradation capacity is more comprehensive. After the liquid microbial enzyme is prepared, the liquid microbial enzyme and the hermetia illucens are combined, livestock and poultry manure is used as a conversion object, and the conversion efficiency of the livestock and poultry manure on the manure is improved by regulating and controlling intestinal microflora of larvae of the hermetia illucens.

The invention belongs to the technical field of biological product extraction, and particularly relates to a bovine-derived Muslim chondroitin sulfate and collagen peptide co-production method based on a composite enzymolysis-membrane separation coupling technology, which comprises the steps of pretreatment of bovine cartilage, enzymolysis, membrane analysis and filtration, extraction of chondroitin and collagen peptide and the like. According to the method, animal source enzyme is replaced by microbial enzyme, religious taboo is avoided, resources are efficiently utilized, two high-value products are synchronously extracted, and the raw material cost is reduced; a membrane separation technology replaces an organic solvent, and pollution is reduced.

The invention discloses a multi-bacteria enzyme composition for water purification treatment and application, and relates to the technical field of water purification. The microbial agent is prepared from the following components in parts by weight: 15 to 30 parts of rhodopseudomonas palustris, 15 to 30 parts of bacillus subtilis, 25 to 35 parts of serratia marcescens, 25 to 35 parts of denitrifying pseudomonas, 25 to 35 parts of lactic acid coccus, 25 to 35 parts of bacillus amyloliquefaciens and 25 to 35 parts of rhodotorula benthica. The synergistic effect of the flora can inhibit the outbreak of harmful algae, promote the growth of beneficial algae, improve the flocculation performance of a water body and effectively improve the transparency. Meanwhile, the composition has a remarkable removal effect on key pollution indexes such as ammonia nitrogen, COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand), suspended solids and total phosphorus, so that the systematic repair of the water body is realized.

Provided herein are methods of analyzing a fecal sample including measuring the amount of ethanol produced by the fecal sample and measuring the presence, absence, or relative abundance of Ruminococcus gnavus, Escherichia coli, or Klebsiella pneumoniae in the fecal sample compared to a reference sample, and / or measuring the expression of genes associated with the heterolactic fermentation pathway, the mixed acid fermentation pathway, the ethanolamine utilization pathway, and / or acetylene degradation pathway. Also provided herein are methods of treating a condition associated with gut alcohol production in a subject including analyzing a fecal sample from a subject, determining the subject has a gut alcohol production condition, and administering to the subject an effective amount of a treatment comprising a probiotic with optional resistant starch, fecal microbiota transplantation (FMT), an antimicrobial agent, a microbial enzyme inhibitor, or a combination thereof.