388 results about "Microbiologic agent" patented technology

The invention relates to an agricultural microbial preparation production line multi-device collaborative control method and system, and the method comprises the steps: calculating a device health score based on operation state information, combining the device health score with a biological risk index to generate a task release score, and generating a production task instruction when the task release score meets a preset release threshold value, constructing a cooperative interlocking matrix between the multiple types of process equipment and the material handling equipment based on the production task instruction, distributing a control execution instruction to the multiple types of process equipment and the material handling equipment, respectively obtaining equipment feedback state information and material circulation information, executing consistency verification on the equipment feedback state information and the material circulation information, and sending a verification result to the material handling equipment; a consistency verification result is obtained, during manual modification, a revision audit chain corresponding to the control event information is generated, and when the running state information or the control event information triggers a preset abnormal threshold value, a disposal control instruction is generated. The method has the effect of improving the production safety.

The invention discloses a compound microorganism and application thereof to improvement of saline-alkali soil, and relates to the technical field of agriculture, the compound microorganism is obtained by compounding halophilic bacillus, rhodotorula mucilaginosa, alkali-resistant rhizobium, desulfurization vibrio and siliconizing bacteria, and the excellent saline-alkali soil improvement effect can be achieved. The functional strains cooperate with one another, have complementary advantages, and play a role in multiple aspects such as soil structure improvement, nutrient supply and absorption, salt and alkali relief, microbial community optimization and the like. The compound microbial preparation has an efficient synergistic mechanism, provides an innovative solution for solving the problem of saline-alkali soil, and shows huge potential in the aspects of promoting agricultural green development and ecological protection.

The invention relates to a microbacterium ester, a microbial preparation thereof and a method for degrading plastics by using the microbacterium ester, the strain is microbacterium ester 2A3-D1, the microbacterium ester is registered in China General Microbiological Culture Collection Center on June 19, 2025, and the preservation number is CGMCC No.34950. The invention further discloses a method for degrading plastics by using the microbacterium ester. The invention relates to a microbial preparation containing microbacterium esterotorum 2A3-D1 as an active component. The invention relates to a method for degrading polyethylene and polypropylene micro-plastics by utilizing microbacterium esteroflavus 2A3-D1. The strain can grow by taking polyethylene and polypropylene micro-plastics as a unique carbon source, and has the capability of degrading the polyethylene and polypropylene micro-plastics. The method is applied to degradation of polyethylene and polypropylene plastics in a river in-situ environment, and has a wide application prospect.

The invention belongs to the field of microbial preparations, and particularly relates to a complex microbial inoculant for promoting microbial quorum sensing and application of the complex microbial inoculant in compost. The composite microbial agent comprises pseudomonas A3 and paenibacillus polymyxa 21-2, and the preservation number of the pseudomonas A3 is CCTCC (China Center for Type Culture Collection) NO: M20251394. The pseudomonas A3 can express key genes such as rhlI and lasI of a gram-negative bacteria AHL quorum sensing system and signal molecules of the key genes, and the paenibacillus polymyxa 21-2 can express luxS genes of a gram-positive bacteria AI-2 signal system and signal molecules DPD of the luxS genes. In the pig manure compost, the complex microbial inoculant is added, so that the expression of AI-2 and AHLs system related genes in the compost and the content of signal molecules DPD are remarkably improved, the microbial population sensing process of the compost is promoted, finally, the compost temperature is increased by about 6 DEG C, the compost carbon-nitrogen ratio is reduced, and the compost maturity is promoted.

The invention discloses enterobacter hormaechei XW-01 and a microbial preparation thereof, the strain (preservation number is CCTCC NO: M 20242595) can efficiently degrade protein, total sugar and nicotine in tobacco leaves, sensory indexes such as aroma and aroma quantity are remarkably improved, and protease activity is remarkably improved when the enterobacter hormaechei XW-01 and wheat bran act synergistically. The microbial preparation is obtained through the processes of strain activation, fermentation culture and microbial agent preparation, and when the microbial preparation is applied to tobacco leaf treatment, through the steps of water content adjustment, preparation spraying, sealed fermentation, low-temperature drying and the like, the technical breakthrough that the protein content is reduced, the tar release amount is reduced, and the comprehensive quality grade is improved is achieved. Compared with a traditional method, the technology has the advantages that the treatment period is shortened, the cost is greatly reduced, the COD value of wastewater is greatly reduced, the cigarette quality and the production environmental protection property are remarkably improved, and the method has a wide industrial application prospect.

The invention discloses a composite microbial preparation for treating obesity of pet dogs and application of the composite microbial preparation, and belongs to the technical field of microbial preparations. The compound microbial preparation is prepared by fermenting lactobacillus acidophilus L100 and lactobacillus reuteri GBW1146, and the preservation number of the lactobacillus reuteri GBW1146 is CGMCC (China General Microbiological Culture Collection Center) No. 34455. The compound microbial preparation is prepared by fermenting lactobacillus acidophilus L100 and lactobacillus reuteri GBW1146. The compound microbial preparation can remarkably reduce digestion and absorption of intestinal tracts of dogs on fat and reduce triglyceride and cholesterol levels in blood, so that the average food intake and average calorie consumption of the dogs are reduced, and finally the effect of reducing obesity of the pets is achieved. The compound microbial preparation provided by the invention enhances the competitiveness of the pet feed additive and series products thereof in China in the international market, and has a wide application prospect.

The invention discloses a microbiological deodorization method, which belongs to the technical field of disinfection and deodorization, and comprises the following steps: S1, preparing a microbial preparation, S2, pre-stirring a strain combination; S3, preparing a deodorant from the prepared composite microbial preparation according to the mass; and S4, putting a prepared deodorant into an ultrasonic atomizer or a spray tower. According to the invention, the microbial preparation is creatively adopted to perform spray deodorization on the odor source, so that the deodorization efficiency is high, the effect is good, the treatment cost of the odor source and odor is effectively reduced, the overall operation difficulty is low, only the polluted area is atomized, the odor is effectively controlled before volatilization, the odor pollution spreading can be effectively controlled, and the influence on the operation environment is avoided; the microbial inoculum is non-toxic, can be naturally degraded, has no residue after deodorization, does not need additional neutralization and filtration, has higher environmental adaptability, and meets the deodorization requirements of small and medium-sized farms and small and medium-sized garbage collection stations.

The invention discloses bacillus subtilis MY-01 as well as a microbial preparation and application of the bacillus subtilis MY-01. The strain (preservation number is CCTCC NO: M 20242596) can efficiently degrade cellulose, total sugar and nicotine in tobacco stems and remarkably improve sensory indexes such as aroma quality and aroma amount, and the cellulase activity is greatly improved when the strain and sodium carboxymethyl cellulose act synergistically. The microbial preparation is obtained through the processes of strain activation, fermentation culture and microbial agent preparation, and when the microbial preparation is applied to tobacco stem treatment, the technical breakthrough of reduction of the cellulose content, increase of the filling value and reduction of the tar release amount is achieved through the steps of water content adjustment, preparation spraying, sealed fermentation, low-temperature drying and the like. Compared with a traditional method, the technology has the advantages that the treatment period is greatly shortened, the cost is remarkably reduced, the COD value of wastewater is reduced, the cigarette quality and the production environmental protection property are remarkably improved, and the industrial application prospect is wide.

The invention discloses a salt-tolerant brevibacillus for promoting growth and preventing and controlling plant diseases and application of the salt-tolerant brevibacillus. The brevibacillus halotolerans T101 is preserved in the Guangdong Microbial Culture Collection Center (GDMCC) on July 23, 2025, and the preservation number of the brevibacillus halotolerans T101 is GDMCC No: 66731. The brevibacillus halotolerans T101 is preserved in the Guangdong Microbial Culture Collection Center (GDMCC) on July 23, 2025. The strain T101 disclosed by the invention can effectively antagonize plant pathogenic fungi peronophythora litchii and plant pathogenic bacteria such as pseudomonas syringae, xanthomonas campestris, citrus canker pathogen and ralstonia solanacearum, can generate siderophores and plant growth hormone IAA, and can remarkably promote the growth of tomato root systems in a pot experiment. Therefore, the strain T101 can be used for preparing microbial preparation products for preventing and treating plant diseases and promoting plant root growth, and has important application potential in the aspects of microbial agents, biological fertilizers and the like for promoting plant growth and development.

The invention relates to bacillus megatherium XW-02 (the preservation number is CCTCC NO: M 2025185), a microbial preparation of the bacillus megatherium XW-02, and application of the microbial preparation. The bacillus megatherium XW-02 has the advantages that the preservation number is CCTCC NO: M 2025185; the strain can efficiently express xylanase through xylan induction, hemicellulose in tobacco leaves is remarkably degraded, chemical composition is optimized, and combustion harmful substances are reduced. The treated cigar has the advantages that the aroma richness is improved, the purity is improved, the taste mellowness is improved, and the overall quality is improved by 1-2 grades. The xylan extracted from agricultural wastes is used as an inducer to construct a green biological manufacturing system, the cost is reduced by more than 80% compared with the traditional process, and the emission of three wastes is reduced. The process compatibility is high, the method can be matched with an existing production line only by additionally arranging a strain culture module, the single-line annual tobacco leaf treatment amount reaches 500 tons, and economic benefits are remarkable. The invention provides a safe, efficient and environment-friendly quality improvement solution for the tobacco industry, and has great industrialization value.

The invention provides a bifidobacterium longum subsp. Longum aFMT-103 strain, which is classified and named as Bifidobacterium longum subsp. Longum, is preserved in Guangdong Microbial Culture Collection Center, and has a preservation number of GDMCC No: 65181. The invention also provides a preparation method of the bifidobacterium longum subsp. Longum aFMT-103 strain. The invention further provides a microbial preparation containing the aFMT-103 bacterial strain. In addition, the invention also provides an application of the strain or the microbial preparation in preparation of an anti-depression product, and also provides an anti-depression product. The bifidobacterium longum subsp. Longum aFMT-103 strain has the advantages that the bifidobacterium longum subsp. Longum aFMT-103 strain is separated from the faeces of healthy adults; the strain has a remarkable anti-depression effect, can be used for preparing a preparation for resisting depression symptoms, and is of great significance in prevention and adjuvant therapy of depression.

The invention relates to the field of microorganisms, in particular to lactobacillus plantarum TRT-01 with anti-inflammatory and bacteriostatic functions as well as a preparation method and application of the lactobacillus plantarum TRT-01, the lactobacillus plantarum TRT-01 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.32237, and the preservation date is October 17, 2024. The plant lactobacillus has broad-spectrum bacteriostatic activity on 10 pathogenic bacteria such as helicobacter pylori, streptococcus mutans and the like, and can regulate Th1 / Treg immune balance and relieve inflammatory response by inducing dendritic cells to secrete cell factors IL-10 and IL-12, inducing T cells to secrete cell factors TGF-beta and IFN-gamma and inhibiting secretion of cell factors IL-6 at the same time. Therefore, the plant lactobacillus TRT-01 disclosed by the invention can be used for preparing a composition with anti-inflammatory and bacteriostatic effects, is suitable for the fields of medicines, foods, health-care products and the like, and is particularly suitable for developing a microbial preparation with a probiotic effect.

The invention belongs to the field of functional composite microbial preparations, and particularly discloses a microbial agent and GABA compounded composition and application thereof in promoting growth and development of children. The composition is prepared from a freeze-dried bacterial agent and a GABA (gamma-aminobutyric acid) compound, wherein the freeze-dried bacterial agent comprises lactobacillus johnsonii YH1136 and lactobacillus helveticus Helveticus; the GABA compound is prepared by loading GABA with the purity of greater than or equal to 98% on a nano cellulose carrier, and the loading rate is 20-35%. The composition realizes high survival rate of the microbial inoculum and targeted slow release of GABA through a freeze-drying process and enteric coating. Experiments show that the composition can significantly improve the serum GH / IGF-1 level, the bone mineral density and the body growth rate, and has a synergistic effect when combined with the vitamin D3. According to the invention, the problems of single strain function, low GABA utilization rate and gastric acid damage in the prior art are solved, and an efficient and safe solution is provided for children growth and development intervention.

The invention discloses a process parameter regulation and control method and system for the real-time fermentation state of an agricultural microbial preparation, and the method comprises the steps: S1, building a monitoring and data integration platform, carrying out the coding management of a fermentation container, collecting multi-dimensional data, carrying out the standardization processing, and building a historical database; s2, developing a visual display system, presenting fermentation room layout and color block superposition duration information in a graphical interface, and early warning deviation; s3, constructing an evaluation and prediction model, evaluating the state through a deep neural network and a time sequence algorithm, and predicting the progress; s4, developing an adjustment strategy generation engine, automatically analyzing an abnormal reason and generating a multi-parameter collaborative optimization suggestion; and S5, evaluating the regulation and control effect and continuously optimizing. The system comprises a monitoring and data integration module, a visual display module, an evaluation and prediction module, an adjustment strategy generation module and an effect evaluation optimization module. Intelligent upgrading of the whole production process is achieved, the response speed and decision accuracy are improved, the fermentation regulation lag loss is reduced, and high-quality production is guaranteed.

The present invention belongs to the field of microorganisms, and more specifically, the present invention relates to Lactobacillus sanfranciscous ( Lactobacillus_ sanfranciscensis The present invention relates to the use of a microbial agent in the prevention, diagnosis and / or treatment of attention deficit hyperactivity disorder (ADHD), and a microbial preparation for the prevention and / or treatment of ADHD. This provides further evidence for the correlation between the gut microbiota and ADHD, and also provides new candidates for the treatment of ADHD.

The invention relates to the technical field of microorganisms, and particularly discloses a lactobacillus paracasei KQNIU, a microbial preparation and application of the lactobacillus paracasei KQNIU. The Lactobacillus paracasei KQNIU is preserved in the China General Microbiological Culture Collection Center on August 25, 2025, the preservation number is CGMCC No.35739, and the Lactobacillus paracasei KQNIU is classified and named as Lactobacillus paracasei, and the Lactobacillus paracasei KQNIU is named as Lactobacillus paracasei KQNIU. The Lactobacillus paracasei KQNIU is named as Lactobacillus paracasei KQNIU. The lactobacillus paracasei KQNIU provided by the invention has good gastrointestinal tract tolerance, has an inhibition effect on pathogenic bacteria such as escherichia coli, salmonella and the like, can be prepared into a microbial preparation or a feed additive for preventing and treating calf diarrhea, replaces antibiotics and realizes green and healthy breeding.

The invention provides a preparation method of a degraded grass felt layer repairing material based on yak manure biochar and a sludge organic fertilizer, and the method comprises the following steps: pyrolyzing fresh yak manure to obtain yak manure biochar; adding quick lime or calcium carbonate, monopotassium phosphate and humic acid into the sludge to obtain treated and improved sludge; the treated and improved sludge is subjected to composting fermentation, and the sludge organic fertilizer is obtained; and uniformly mixing the yak manure biochar, the sludge organic fertilizer, plant fibers, a composite microbial preparation, soil and grass seeds to obtain the degraded grass felt layer repairing material based on the yak manure biochar and the sludge organic fertilizer. The invention further provides application of the repairing material, and the repairing material is applied to repairing of a degraded grass felt layer. The degraded grass felt layer repairing material based on the yak dung biochar and the sludge organic fertilizer prepared by the invention realizes resource recycling, reduces environmental pollution, is relatively low in cost, has long-term stability, and can provide a lasting repairing effect.

The invention relates to the technical field of functional microbial preparations, in particular to a biological preparation for relieving intestinal discomfort caused by alcohol and a preparation method and application thereof.The main technical scheme is that the biological preparation is prepared from, by weight, 5-20 parts of bacillus coagulans, 10-30 parts of pediococcus pentosaceus, 5-10 parts of lactobacillus rhamnosus and 0-20 parts of saccharomycetes. 0-5 parts of bifidobacterium longum and 0-5 parts of lactococcus lactis. By constructing an alcohol metabolism-intestinal protection dual-function synergistic system, specific florae such as bacillus coagulans, pediococcus pentosaceus and lactobacillus rhamnosus are scientifically compatible with functional components such as inulin and L-cysteine, alcohol is efficiently metabolized, and a carbon source is generated; the technical problems of low metabolic efficiency, weak intestinal protection and serious gastric acid inactivation of a traditional product are comprehensively solved.

The invention relates to the technical field of microbiology, in particular to application of Eubacterium rectum to preparation of a preparation for relieving rheumatoid arthritis. It is found for the first time that Eubacterium rectum can improve joint inflammation and bone destruction of mice by adjusting immune tolerance, and the Eubacterium rectum is applied to development of microbial preparations containing Eubacterium rectum so as to improve intestinal flora of rheumatoid arthritis patients, so that the effects of adjusting immunity and relieving rheumatoid arthritis conditions are achieved.

The invention provides a stenotrophomonas sp. CLX-022 strain which has a good antagonistic effect on colletotrichum gloeosporioides and fusarium fusiforme, and the strain is preserved in China Center for Type Culture Collection (address: Wuhan University, Wuhan, China) and has a good antagonistic effect on colletotrichum gloeosporioides and fusarium fusiforme. The strain is preserved in China Center for Type Culture Collection (CCTCC) NO: M20252110 on September 24, 2025, the postal code is 430072, and the preservation number is CCTCC NO: M20252110. The 16S rDNA (ribosomal deoxyribonucleic acid) sequence of the strain is as shown in SEQ ID NO. 1. The stenotrophomonas CLX-022 strain is high in antibacterial property and can be used for preparing a microbial preparation for treating / preventing strawberry anthracnose and rice bakanae disease.

This invention relates to the field of microbial inoculants, and discloses a multi-strain microbial preparation for the prevention and control of potato scab, its preparation method, and its application. The multi-strain microbial preparation includes: *Bacillus atrophicus* 6052, *Bacillus compostii* 6069, *Microbacterium natriureticum* 6035, and *Bacillus atrophicus* 4618; all of these strains are deposited at the China General Microbiological Culture Collection Center (CGMCC), with accession numbers CGMCC NO.34693, CGMCC NO.34694, CGMCC NO.34695, and CGMCC NO.34952, respectively. The multi-strain microbial preparation of this invention exhibits good and stable antibacterial effects, and its use can significantly reduce the incidence and disease index of potato scab.

The invention provides a method for increasing the yield of indole-3-acetic acid through a streptomyces scabies SCAB31831 gene, which comprises the following steps: deleting the SCAB31831 gene in streptomyces scabies through a genetic engineering way to obtain an indole-3-acetic acid high-yield engineering strain, and fermenting the strain to produce the indole-3-acetic acid. Wherein the sequence of the SCAB31831 gene is as shown in SEQ ID NO. 1. The invention also provides an application of the method in preparation of an indole-3-acetic acid high-yield microbial preparation, and provides an indole-3-acetic acid high-yield freeze-dried bacterial powder. According to the invention, the SCAB31831 gene negatively related to the biosynthesis of the indole-3-acetic acid is identified, and the gene is deleted in streptomyces scabies, so that the indole-3-acetic acid high-yield strain and freeze-dried bacterial powder based on the strain are obtained, and a technical support is provided for improving the fermentation yield of the indole-3-acetic acid in industrial production.

The invention relates to the technical field of microbial preparations, and particularly discloses bacillus velezensis HY16 fermentation liquor freeze-dried powder and a preparation method and application thereof.The preparation method includes the steps that hydroxyl of beta-cyclodextrin reacts with anhydride of maleic anhydride, double bonds are introduced to beta-cyclodextrin molecules, and then under the action of persulfate serving as an initiator, the beta-cyclodextrin and maleic anhydride react with each other to prepare beta-cyclodextrin HY16 fermentation liquor freeze-dried powder; and carrying out free radical copolymerization reaction on the beta-cyclodextrin and 2-acrylamide-2-methylpropanesulfonic acid to obtain the modified beta-cyclodextrin. Sulfonic acid groups in 2-acrylamide-2-methylpropanesulfonic acid are strong hydrophilic groups, the water solubility of beta-cyclodextrin can be remarkably improved, growth of ice crystals during freezing is delayed, mechanical damage of the ice crystals to strains is reduced, and meanwhile negative charges of the sulfonic acid groups can be effectively absorbed through electrostatic repulsion. The freeze-drying process is simple, aggregation and inactivation of fermentation active substances or strains in the freeze-drying process are prevented, the survival rate of viable bacteria in the freeze-drying powder is increased, the stability of active ingredients in fermentation liquor is kept, and then the algae-lysing effect is improved.

The application relates to the technical field of soil remediation, and particularly discloses a composite soil remediation agent, a preparation method and application thereof.A composite soil remediation agent comprises modified calcined oyster shell, plant biomass carbon, bone charcoal, compost, microbial preparation and ferrous sulfide; the preparation of the modified calcined oyster shell comprises the following steps: crushing, calcining oyster shell, and then adding a modified solution prepared from urea, rhamnolipid, iminodisuccinic acid tetrasodium and sodium dodecylbenzenesulfonate to modify the calcined oyster shell, so that the modified calcined oyster shell is obtained.The composite soil remediation agent can effectively adsorb and fix heavy metals in slightly heavy metal contaminated soil, reduce the mobility and bioavailability of the heavy metals, and thus reduce the harm of the heavy metals to soil and crops.

Disclosed herein are methods, systems and devices for screening compounds for efficacy against biofilm formation. These methods have the advantage over the prior art, in that the biofilm formation (or inhibition thereof) is tested directly on the material of interest, thereby providing a high throughput system for testing antimicrobial formulations against corrosion. Also disclosed is a peg assembly, and kits comprising a peg assembly, wherein the pegs are composed of a material of interest.

The invention discloses serratia marcescens R-Do03 and application of the serratia marcescens R-Do03 in preparation of a microbial preparation for preventing and treating black spot of Chinese yam, the serratia marcescens R-Do03 is preserved in China General Microbiological Culture Collection Center, the preservation date is September 17, 2025, and the preservation number is CGMCC No.35939. The serratia marcescens R-Do03 can be used for preventing and treating black spot of Chinese yam. The invention also specifically discloses an application of the serratia marcescens R-Do03 in preparation of a microbial preparation for preventing and treating black spot of Chinese yam. The serratia marcescens R-Do03 strain fermentation liquor screened by the invention can remarkably inhibit the growth of pathogenic bacteria of the Chinese yam black spot, and the extract of the fermentation liquor can effectively inhibit the pathogenicity of the pathogenic bacteria, so that the serratia marcescens R-Do03 has a remarkable prevention and control effect on the Chinese yam black spot, is expected to be developed as a novel biocontrol agent, and has a wide application prospect. And the method has a wide application prospect for industrial development of Chinese yam.

The present application relates to a method and system for collaborative management of multiple devices in an agricultural microbial preparation production line, which method comprises calculating a device health score based on operating state information, combining the device health score with a biological risk index to generate a task release score, generating a production task instruction when the task release score meets a preset release threshold, constructing a collaborative interlocking matrix between multiple types of process equipment and material handling equipment based on the production task instruction, distributing control execution instructions to the multiple types of process equipment and material handling equipment, obtaining device feedback state information and material flow information respectively, performing consistency verification on the device feedback state information and the material flow information to obtain a consistency verification result, generating a revision audit chain corresponding to the control event information when manually modified, and generating a disposal control instruction when the operating state information or the control event information triggers a preset abnormal threshold. The present application has the effect of improving production safety.

The invention discloses a preparation method of a microbial preparation for preventing and treating powdery mildew of melons, which comprises the following steps: firstly preparing keratin microspheres, modifying the keratin microspheres with acryloylmorpholine, and compounding the modified keratin microspheres with mesoporous silica and an ethylene-vinyl alcohol copolymer to obtain a composite carrier; and finally, immersing the carrier into a mixed bacteria solution of ceriporia lacerata, bacillus velezensis and bacillus agave for adsorption and drying. Stable immobilization of strains is achieved through multiple interactions, a protective film can be formed on the surfaces of leaves through illumination after the preparation is sprayed, pathogenic bacteria are physically prevented from being attached and infected, and the fungicide can be intelligently released along with the change of environment humidity; the three strains have a synergistic effect to efficiently prevent and control powdery mildew pathogenic bacteria of melon crops by preempting sites, degrading pathogenic bacteria structures, secreting antibacterial substances and inducing plant immunity, meanwhile, the utilization efficiency and quality of crop nutrients are improved, and the application prospect is good.

The application discloses a plant lactobacillus strain and application thereof, and belongs to the technical field of microorganisms. The preservation number of the strain is CGMCC No. 33864. The strain has good tolerance to gastrointestinal juice and bile salts and has no hemolytic activity. Concentrated cell-free supernatant prepared from the strain can inhibit salmonella, including inhibiting the growth of salmonella, killing bacteria, inhibiting or removing biofilm. Animal experiments show that the strain and the concentrated cell-free supernatant thereof can prevent salmonella infection, alleviate weight loss caused by infection, maintain intestinal barrier integrity, reduce the level of pro-inflammatory factors, alleviate tissue damage, improve the expression of colon tight junction proteins and mucin, promote the generation of short-chain fatty acids, and restore the intestinal flora structure. The application further provides a microbial preparation containing the strain and / or the concentrated cell-free supernatant thereof. The strain and the microbial preparation can be used for preparing products for resisting salmonella, preventing salmonella infection or improving intestinal health.

The application discloses a floating composite microbial preparation for removing marine oil pollution and a preparation method thereof. The floating composite microbial preparation contains bacillus thuringiensis NH26 strain, hollow glass microbeads and a lipopeptide surfactant purified from a fermentation liquor of the NH26 strain, has floating characteristics, can rapidly activate and efficiently degrade oil hydrocarbon, has good degradation capacity for alkanes and polycyclic aromatic hydrocarbons in seawater, and still has good degradation capacity for alkanes in seawater containing high-concentration oil hydrocarbon. The floating composite microbial preparation can be used for removing marine oil pollution and repairing marine environment. In addition, the application further provides a preparation method of the floating composite microbial preparation. The preparation method has simple preparation process, the obtained floating composite microbial preparation has uniform particle size, has high embedding rates for nitrogen and phosphorus, and can be prepared on a large scale.