758 results about "Fermentation system" patented technology

Methods of and system for growing and maintaining an optimized / ideal active yeast solution in the yeast tank and fermenter tank during the fermentation filling cycle are provided. A new yeast stage tank is used between the yeast tank and the fermenter tank allowing yeast to rapidly produce a huge amount of active young yeast cells for a fermenter during the filling period. A measurable and useful controlling factor, % DT / % Yeast by weight ratio (or “food” to yeast ratio), is used (e.g., % DT=glucose), which offers information on the health status of the yeast. The controlling factor is used to control the status of the yeast throughout the entire process.

Methods of and system for growing and maintaining an optimized / ideal active yeast solution in the yeast tank and fermenter tank during the fermentation filling cycle are provided. A new yeast stage tank is used between the yeast tank and the fermenter tank allowing yeast to rapidly produce a huge amount of active young yeast cells for a fermenter during the filling period. A measurable and useful controlling factor, % DT / % Yeast by weight ratio (or “food” to yeast ratio), is used (e.g., % DT=glucose), which offers information on the health status of the yeast. The controlling factor is used to control the status of the yeast throughout the entire process.

The invention discloses a culture method for increasing the protein content of aspergillus niger mycelia by using corn steep liquor as a culture medium, and belongs to the technical field of biological fermentation. Aiming at insufficient resource utilization of corn steep liquor and substitute protein production requirements, a corn processing by-product corn steep liquor is creatively adopted to directly replace a traditional PDB culture medium, and the mycelium protein content is remarkably increased by optimizing a fermentation system. Results show that the corn steep liquor is used as a culture medium, aspergillus niger with the preservation number of CCTCC M 2013703 is inoculated, and aspergillus niger mycelium protein can be obtained through fermentation. The protein content of the mycelium obtained by the process disclosed by the invention reaches 50.62-53.56%, and the total amino acid content is increased by 64-76%. According to the method, high-value conversion of agricultural corn byproducts is realized, and an efficient and low-cost industrial solution is provided for alternative protein production.

The invention relates to the technical field of Chinese herbal medicine fermentation, and discloses a mixed strain fermentation method for efficient conversion of non-medicinal parts of traditional Chinese medicine, which comprises the following steps: constructing an intelligent fermentation system comprising a plurality of independent fermentation units, respectively culturing different strains such as aspergillus niger, bacillus subtilis, saccharomyces cerevisiae and the like in each fermentation unit, the online sensor is integrated in the system and used for monitoring key fermentation parameters in real time, and a fermentation model and an optimization algorithm are arranged in the system and can automatically adjust fermentation conditions. An intelligent fermentation system comprising a plurality of independent fermentation units is constructed, precise classification pretreatment and mixing according to a specific ratio are carried out on rhizoma polygonati stems and leaves and gentian stems and leaves, and an intelligent control system is utilized to dynamically regulate and control the fermentation process, so that the synergistic effect of different strains such as aspergillus niger, bacillus subtilis and saccharomyces cerevisiae is fully exerted, and the fermentation efficiency is improved. The dissolution rate and the conversion rate of active ingredients in the non-medicinal part of the traditional Chinese medicine are improved.

The invention belongs to the technical field of wastewater treatment and energy recovery, and provides a regulation and control method for promoting anaerobic acid production by taking soybean molasses as a substrate through cooperation of ferroferric oxide and bamboo charcoal. Soybean molasses is used as a substrate carbon source, anaerobic activated sludge is inoculated in a medium-temperature SBR reactor, the volume ratio of reactor inflow sewage to sludge is 2: 1, ferroferric oxide and bamboo charcoal composite conductive particles which are subjected to ball milling treatment and have the concentration of 1 g / L are added to promote an anaerobic fermentation system to produce acid, and then anaerobic fermentation is carried out. The mass ratio of ferroferric oxide to bamboo charcoal in the ferroferric oxide and bamboo charcoal composite conductive particles is (1: 2)-(2: 1); monitoring the acid yield, the pH value change and the product type; and the variety and concentration of the acid-producing substance are analyzed, and the interaction of all the components in the reaction process is evaluated. The acid production rate and the total acid production amount in the anaerobic acid production process are obviously improved. And the activity of anaerobic flora is promoted. The variety distribution of acid-producing substances is obviously optimized, and the stability of the acidification process is improved.

The invention discloses a method for promoting acid production and alcohol production through fermentation of clostridium perdali C1 gas by using a biological source carbon-based redox regulation and control medium. The preparation method comprises the following steps: obtaining biochar by adopting a high-temperature pyrolysis method, grinding and sieving to obtain a biogenic carbon-based redox regulation medium, adding the biogenic carbon-based redox regulation medium into a fermentation culture medium, inoculating clostridium perdali into a fermentation device filled with the fermentation culture medium, controlling the volume ratio of H2 to CO2 in the fermentation device to be (1.5: 1)-(2.5: 1), and carrying out anaerobic fermentation for 20-30 days to obtain the biogenic carbon-based redox regulation medium. According to the invention, a biological source carbon-based redox regulation medium is introduced into a clostridium perdali gas fermentation system, and the medium not only can enrich CO2 gas, but also can improve the mass transfer efficiency of a gaseous substrate; the method has the advantages that the method is simple and convenient to operate, extra reducing power is provided for a fermentation system, electron transfer is mediated, the CO2 utilization rate of the strain and the fermentation product generation rate are remarkably increased, secondary resource utilization of solid waste biomass is achieved, C1 gas is effectively converted into high-value chemicals, and a green, economical and sustainable development road is provided for conversion of CO2.

The invention relates to the technical field of microbial fermentation feeds, in particular to a method for producing a protein feed through solid-state fermentation of distiller's grains based on Trichoderma harzianum pretreatment. According to the method, the vinasse is pretreated by the crude enzyme prepared from trichoderma harzianum, and the formula and fermentation conditions of an enzyme production culture medium are optimized, so that the filter paper enzyme activity of cellulase is remarkably improved. By adding the surfactant into a fermentation system and optimizing the variety of the surfactant, the yield of the fermented monosaccharide is improved, and the problem of musty taste in a traditional fermented product is solved while the degradation efficiency of lignocellulose is improved. Furthermore, a synchronous saccharification and fermentation process is adopted, vinasse is fermented through compounded saccharomycetes and crude enzyme liquid, the trichoderma harzianum fermented protein feed is prepared and obtained, digestion and absorption of animals are easier, lactic acid fermentation is conducted on the trichoderma harzianum fermented protein feed again through lactobacillus fermentum, the flavor of the feed is improved, the bitter taste of the feed is reduced, and the sour taste is improved. The method realizes efficient utilization of vinasse resources.

The invention discloses a potato starch processing waste residue fermentation device and method. The device comprises a tank body with a sterile gas filtering discharge port, an automatic inoculation box is arranged outside the tank body, and a stirring device and an automatic gas exchange device are arranged inside the tank body; the automatic inoculation box is mounted above the side of the tank body, a bacterial liquid bottle and an alcohol lamp are arranged in the automatic inoculation box, the bacterial liquid bottle is connected with an inoculation opening communicated with the interior of the tank body through a closed pipeline and feeds bacterial liquid into the fermentation system, and the alcohol lamp is arranged below the inoculation opening and heats the inoculation opening; the automatic gas exchange device comprises a pressure sensor and a plurality of air distributors, and sterile air equipment outside the tank body is communicated with each air distributor through a sterile air inlet and inputs sterile air into the fermentation system; the pressure sensor is mounted at the sterile gas filtering and discharging port, provides a real-time air pressure signal for the PLC control system and controls the gas discharging of the sterile gas filtering and discharging port, so that the problems that the existing fermentation lacks a proper device and the fermentation efficiency is low are finally solved.

The invention discloses a nano ardealite-based saline-alkali soil modifier and a preparation method thereof, and relates to the technical field of soil improvement, the method comprises the following steps: uniformly mixing humic acid, charcoal and a halophilic microbial agent, and then fermenting at 28-32 DEG C for 115-125 hours to obtain a fermentation system; the preparation method comprises the following steps: grinding ardealite into nano ardealite, dispersing the nano ardealite under the action of a surfactant and deionized water, and carrying out surface etching by using acid to form microdot vacancies on the surface of the nano ardealite, so as to obtain chemically modified nano ardealite; the nano phosphogypsum-based saline-alkali soil modifier is obtained by uniformly mixing the chemically modified nano phosphogypsum with a fermentation system, has the advantages of multiple effects, low cost and environmental friendliness, can significantly reduce the salinity and alkalinity of soil, improve the soil structure and promote the growth of crops, realizes the resource utilization of the phosphogypsum, and reduces the environmental pollution.

The present invention belongs to the technical field of microbial fermentation, and discloses the application of a compound bacterium agent of Lactobacillus rhamnosus and Bacillus licheniformis for reducing acids and higher alcohols, Lactobacillus rhamnosus, and in Baijiu. Lactobacillus rhamnosus L21 has a preservation number of: CGMCC NO. 32609, a preservation date of: November 13, 2024, and a preservation unit of: China General Microbiological Culture Collection Center. The use of the compound bacterium agent of Lactobacillus rhamnosus L21 and Bacillus licheniformis XDNZ_Bl_27 can effectively reduce organic acids such as lactic acid and propionic acid in the Baijiu fermentation system, and at the same time can also reduce the content of n-propanol in the fermented grains, which is beneficial to the regulation of acidity and higher alcohols in the process of Baijiu production.

The invention relates to the technical field of microorganisms, in particular to an ethyl carbamate degrading bacterium and application thereof.The ethyl carbamate degrading bacterium is pichia kudriavzevii K44 and is preserved in the China Center for Type Culture Collection on April 25, 2025, the preservation date is April 25, 2025, and the biological preservation number is CCTCC NO: M 2025887. The ethyl carbamate degrading bacterium can obviously degrade ethyl carbamate in a yellow rice wine fermentation system, and a scientific basis is provided for safe production and quality improvement of traditional fermented food.

The present application relates to the technical field of microbial fermentation, and particularly relates to a universal fermentation device, a yogurt production system and a method for producing a yogurt with reduced uric acid. The universal fermentation device comprises a fermentation tank, a sampling tube, a test tube, a sliding member, a pressure detection module and a processor. The pressure detection module is installed on the test tube. The sliding member is slidingly fitted on the test tube, and the sliding member is connected with a first driving rod. The sliding member is provided with a clearance opening, and the clearance opening is matched with a plugging block. The plugging block is connected with a test rod and a second driving rod. One end of the sampling tube is communicated with the fermentation tank, and the other end is communicated with the test tube. The processor is used for determining the density of the fermentation sample and the viscosity of the fermentation sample. The universal fermentation device can realize continuous monitoring of the fermentation system during the fermentation process, effectively avoids sample confusion, improves the timeliness of analysis, ensures that the conditions reflected by the sample are highly consistent with the original fermentation system, and is suitable for various fermentation scenes.

The invention belongs to the technical field of cosmetic raw materials, and particularly relates to shea butter fermentation liquor as well as a preparation method and application thereof. Lactobacillus plantarum, lactobacillus fermentum and lactobacillus gasseri in a specific proportion are adopted to construct a composite fermentation system, acid-resistant aspergillus niger lipase is combined, and shea butter is treated through a one-step fermentation process. By means of the synergistic effect of the three strains and the synergistic effect of the enzyme and the strains, efficient fermentation can be achieved, the content of active ingredients such as polysaccharide, amino acid and polypeptide in fermentation liquor is remarkably increased, meanwhile, the technological process is simple and stable, and the infectious microbe pollution risk is avoided. According to the fermentation liquor prepared by the process, on the basis of enhancing the original moisturizing and soothing effects of the shea butter, the problems of greasy skin feeling and poor permeation and absorption of the shea butter are effectively solved, the shea butter is further endowed with new functions of repairing skin barriers and balancing skin micro-ecology, and the application values of the shea butter and the fermentation liquor are greatly improved.

The invention belongs to the technical field of bioengineering, and particularly relates to a biomass fermentation safety reinforcement learning control method and system, and the method comprises the steps: training an initial strategy network through imitation learning by employing historical data, and providing safety weight initialization for a reinforcement learning agent; and constructing a virtual training environment fusing the mechanism model and the data-driven residual error correction network, applying domain randomization, training an agent in the environment to maximize long-term accumulated rewards, and obtaining a robust control strategy. A training strategy is deployed to a real fermentation system, a control instruction is corrected in real time through an independent safety layer according to a hard constraint rule to ensure operation safety, and meanwhile online fine tuning and updating are conducted on the strategy based on actual operation data. According to the method, safe and smooth transition from virtual training to practical application is realized, and the final ethanol concentration and the overall control performance in the fermentation process are remarkably improved.

The invention relates to the technical field of fermentation systems, and particularly discloses a partition stirring dry type anaerobic intelligent fermentation system which comprises a dynamic reconstruction fermentation unit, a bionic stirring device, a multi-dimensional sensing network, a cognitive control center, an intelligent energy network and a digital twinborn interaction system. The dynamic reconstruction unit and the bionic stirring device improve the fermentation effect; the multi-dimensional sensing network and the cognitive control center realize accurate monitoring and regional optimization; the intelligent energy network improves the energy efficiency and reduces the cost and emission; the digital twin interaction system is combined with AR and block chain evidence storage, so that operation and maintenance are facilitated, and data are guaranteed; the regional function dynamic allocation and optimization algorithm enhances the adaptability and anti-interference performance of the system, and assists the fermentation system to become efficient, intelligent and green.

The invention discloses a pretreatment method for increasing the yield of anaerobic fermentation methane of a lignocellulose material, and belongs to the technical field of high-efficiency anaerobic fermentation methane production of organic solid waste. The method comprises the following steps: (1) crushing straws; (2) mixing the straw powder and deionized water according to a mass ratio of 1: (19-21), stirring at a rotating speed of 120-180r / min, treating for 22-26h, fully and uniformly mixing, adjusting the pH value of the system to 3.4-3.7, adding 0.08-0.12 wt% of cellulase according to the mass of the straw, and carrying out enzymolysis at 49-51 DEG C for 2-4d to obtain an enzymatic hydrolysate; (3) yeast pre-fermentation: inoculating 4-6% v / v activated angel high-activity dry yeast into the enzymatic hydrolysate in the step (2) for anaerobic pre-fermentation, wherein the pre-fermentation time is 16-20 hours; and (4) anaerobic fermentation for methane production: adding 20-30% v / v of introduction sludge into the fermentation system in the step (3), and carrying out anaerobic fermentation for methane production, wherein the fermentation temperature is 36-38 DEG C. Compared with the prior art, the method has the advantages of being high in adaptability, short in treatment period, good in economic benefit, free of environmental pollution and the like, and has certain guidance and inspiration effects on engineering of producing methane from straw.

The invention relates to a method for producing 6 '-fucosylated chitosan disaccharide GlcNacbeta1-4 (Fucalpha1-6) GlcNAc through double-bacterium coupling fermentation, and belongs to the technical field of fermentation engineering. The method comprises the following steps: taking fucose and N-acetyl-D-glucosamine as substrates in a fermentation system; the 6 '-fucosylated chitosan disaccharide is produced through coupled fermentation of an engineering escherichia coli strain and yeast, and a GlcNAcbeta1-4 (Fucalpha1-6) GlcNAc synthesis pathway including N-acetylhexosamine 1-kinase nahK, fucosyltransferase nodZ, L-fucose kinase Fkp and N, N-diacetylchitosan phosphorylase Chbp is constructed in the engineering escherichia coli, so that the 6'-fucosylated chitosan disaccharide is obtained. According to the invention, the yeast is added to realize cyclic regeneration from GMP to GTP, so that not only is the problem of high oligosaccharide production cost caused by pure exogenous supplement of GTP effectively solved, but also efficient production of GlcNAcbeta1-4 (Fucalpha1-6) GlcNAc is realized, and the yield of GlcNAcbeta1-4 (Fucalpha1-6) GlcNAc is increased to 25.50 g / L by an optimized coupling fermentation production technology. The invention provides a novel synthesis technology of complex N-glycans, and has a wide application prospect.

The invention discloses a fermentation system and method for dairy product processing, and belongs to the technical field of automatic control fermentation systems, the system comprises a sensing module, a fault diagnosis module, a regulation and control module and an execution module; comprising the following steps: S1, detecting multi-source parameters in a preset fermentation tank in real time through a preset detection unit, predicting future parameters according to historical multi-source parameters, and marking the current multi-source parameters as abnormal data when the current multi-source parameters exceed a set threshold value; s2, inputting the abnormal parameters into a fault diagnosis module to generate a first judgment result and a second judgment result; s3, generating a first regulation and control instruction and a second regulation and control instruction according to the first judgment result and the second judgment result; and S4, by analyzing the first regulation and control instruction and the second regulation and control instruction, driving a plurality of execution units to execute regulation and control actions. Through the sensing module, the fault diagnosis module, the regulation and control module and the execution module, fermentation out-of-control caused by continuous distortion of key parameters is avoided.

The invention provides a complex microbial inoculant for fermenting modified corn flour, a method and application, and belongs to the technical field of fermented food. The complex microbial inoculant comprises a liquid state fermentation complex microbial inoculant (streptococcus thermophilus is greater than or equal to 1 * 10 < 9 > cfu / mL and bacillus subtilis is greater than or equal to 1 * 10 < 9 > cfu / mL) and a solid state fermentation complex microbial inoculant (monascus spore suspension is greater than or equal to 1 * 10 < 6 > spores / mL and lactobacillus plantarum is greater than or equal to 1 * 10 < 8 > cfu / mL), and the fermentation modification method comprises the following steps: performing microwave puffing treatment on corn flour, mixing the corn flour with oat bran, and sequentially performing liquid state fermentation and solid state fermentation, and spraying the liquid fermentation supernatant back to the solid substrate, and finally drying to obtain the modified corn flour. Through the synergistic effect of a two-stage fermentation system, the content of functional components such as soluble dietary fibers and Monacolin K in the corn flour is remarkably increased, and the obtained product has the characteristic of lowering cholesterol.

The invention relates to the technical field of anaerobic fermentation, in particular to modified biochar, a microbial agent loaded by the modified biochar and application of the modified biochar. The modified biochar disclosed by the invention has relatively high specific surface area and porosity, so that adsorption sites of microorganisms are increased, and proliferation of the microorganisms is facilitated. The activity and metabolic capability of microorganisms in an anaerobic fermentation system can be improved by utilizing the modified charcoal-loaded microbial agent, so that the anaerobic fermentation performance is effectively improved, environmental harm is reduced, resource utilization is realized, and the modified charcoal-loaded microbial agent has a wide application prospect.

The invention discloses a straw leavening agent suitable for a microfiltration membrane fermentation system and application of the straw leavening agent, and relates to the technical field of biology. The straw leavening agent comprises a microorganism combination. The microbial composition is prepared from bacillus subtilis (Bacillus subtilis) 1JN2, streptomyces globisporus (Streptomyces globisporus) XS2301 and myroides odortorius (Myroides odortorius) YW-1, and the microbial composition is prepared from bacillus subtilis (Bacillus subtilis) 1JN2, streptomyces globisporus (Streptomyces globisporus) XS2301 and myroides odortorius (Myroides odortorius) YW-1. The straw fermenting agent can improve the humification index in the straw composting process, remarkably shorten the composting period of crop straw and effectively reduce volatilization of irritant gas such as ammonia gas and hydrogen sulfide in the straw composting process. The straw leavening agent provided by the invention not only can efficiently treat crop straws, but also has the dual advantages of environmental protection and agricultural yield increase, and provides important technical support for agricultural sustainable development.

The invention relates to the technical field of fermentation engineering, in particular to a method for increasing the yield of bacterial cellulose through blue-green algae. Comprising the following steps: carrying out fermentation by adopting Komagataeibacter xylinus to produce bacterial cellulose, and adding blue-green algae in the fermentation process; the ratio of the total viable count of the gluconacetobacter xylinum to the total viable count of the blue-green algae is (0.3-0.5): 1. According to the research, the problem that a compact film is formed on the surface of a culture medium by primarily generated bacterial cellulose can be remarkably solved by adding the blue-green algae (especially synechocystis) into a gluconacetobacter xylinum fermentation system, the cellulose production efficiency is improved, and the method has important value in the field of fermentation production of the bacterial cellulose.

The invention discloses a beverage capable of improving sleep and a preparation method of the beverage, and belongs to the technical field of fermentation engineering technology and health-care food. Through a specific probiotic fermentation system, a natural raw material extracting solution, sodium glutamate and a humulus lupulus extract are jointly fermented, endogenous GABA is efficiently converted and generated, and the endogenous GABA and functional components such as pachymaran, lily polysaccharide and jujuboside form a polymorphic composite system. The GABA in the prepared beverage is high in bioavailability and good in stability, all the components have a synergistic effect through multiple ways such as intestinal brain axis regulation and neurotransmitter regulation, sleep is effectively improved, and meanwhile the beverage has good flavor and storage stability.

The invention discloses a method for producing a carbon source through co-fermentation of sludge and kitchen waste, and relates to the technical field of organic waste recycling, and the method comprises the following steps: collecting a bubble generation time sequence, a liquid phase pressure fluctuation signal and an acoustic scattering signal in a sludge and kitchen waste co-fermentation system, and constructing a coupling distribution model of a bubble size and an oscillation frequency; generating an initial energy evolution spectrum; and under the constraint of the initial energy evolution spectrum, identifying a coherent feature sequence of bubble oscillation, calculating the energy concentration intensity of a multi-scale bubble group, positioning a high-frequency energy concentration area and generating a nonlinear resonance fingerprint. By means of dynamic monitoring and intelligent regulation and control, the energy gathering area is accurately positioned, the resonance process is intervened in real time, suppression of shock wave propagation and predictive control over the structural fatigue risk are achieved, and the fermentation system stability and the carbon source release efficiency are improved.

The utility model discloses a system for realizing online circulating flow and fermentation of amino acid by adopting a ceramic membrane, which comprises a strain tank, a seed tank arranged on one side of the strain tank, a fermentation tank arranged on one side of the seed tank, a feed pump arranged at the top end of one side of the fermentation tank, a cleaning tank arranged on one side of the fermentation tank, and a circulating pump arranged at the bottom end of one side of the cleaning tank. According to the amino acid on-line circulating flow and fermentation system realized by adopting the ceramic membrane, the culture times of early-stage strain culture and seed tank culture are obviously reduced; the fermentation level is always in a high level state, the acid production rate of thalli is high, the yield is remarkably improved under the condition that equipment is not increased, and the total yield even can reach 2-3 times of the original yield; nutrient substances in the ceramic membrane filtrate can be sterilized after being extracted to serve as nutrient substances to be fed into the fermentation tank, so that the product output ratio of feeding is increased, namely the acid yield is increased; and the ceramic membrane can be sterilized by steam, so that the requirement of sterile equipment is met.

The invention discloses a multi-stage fermentation method for improving thallus activity and stability, and particularly relates to the technical field of microbial fermentation. Dynamically dividing a fermentation period into a plurality of metabolic staging sections based on the multi-source physiological characteristic parameter set; constructing a multi-stage environment regulation and control model, taking the optimal control parameter vector of each stage as a control target, combining a real-time feedback signal set, and carrying out environment factor regulation through a model prediction control algorithm; calculating a thallus activity improvement rate and a fermentation stress anomaly index in real time, performing cross-batch correction on the multi-stage environment regulation and control model after fermentation is finished, and outputting an optimized parameter template for next fermentation calling; the dynamic self-adaptive control of the fermentation system can be realized, the thallus metabolism efficiency, the process stability and the fermentation repeatability are improved, and the method is suitable for industrial large-scale microbial fermentation production scenes.

The invention discloses a system for producing short-chain volatile fatty acid through kitchen co-fermentation of sludge, and relates to the technical field of biochemical engineering and environmental engineering. Comprising a time phase construction module, a causal playback identification module, a flow field mapping correction module, a metabolism gating feedback module, a structure reconstruction steady-state module and a phase traction control module, and reconstructing a gas-liquid phase difference reference surface according to the real-time flow field response, and establishing a reference surface to calibrate an anti-phase trigger window. According to the method, gas-liquid reverse-phase accurate identification is realized through a high-precision time base line and flow field tracking, a causal chain is constructed to early warn an inverted nucleation area in advance, a steady-state energy base plane is established in combination with three-dimensional flow field correction and metabolism monitoring feedback and driving structure cooperative adjustment, and finally disturbance suppression and path self-resetting are realized through phase traction regulation. The acid production efficiency and the system stability are improved.

The invention provides a probiotic fermented feed and a preparation method thereof, belongs to the technical field of biological fermented feeds, and particularly relates to the technical field of biological fermented feeds. According to the preparation method, bacillus subtilis, lactobacillus plantarum and saccharomyces cerevisiae are used as complex microbial inoculants to ferment the feed; by using phlorizin and honeysuckle glycoside in a fixed proportion in a fermentation substrate, the growth activity of bacillus subtilis in the initial stage of fermentation can be improved, the activity of protease and cellulase in a fermentation system can be improved, the nutritional ingredients of the feed can be improved, and the yield of the feed can be increased. And nutrient substances generated by rapidly decomposing a substrate by the bacillus subtilis can be supplied to growth and metabolism of lactic acid bacteria and saccharomycetes, so that the number of probiotics in the feed is increased, and the nutritional value of the feed is improved. The probiotic fermented feed and the preparation method thereof have the advantages of being low in cost, simple in preparation method, short in production period, environmentally friendly and high in nutritional value.

The utility model discloses ammonia nitrogen removal equipment for anaerobic fermentation biogas slurry, and belongs to the field of ammonia nitrogen removal and recycling of anaerobic fermentation biogas slurry. All deaminated biogas slurry flows back to the anaerobic fermentation system by virtue of a steam stripping flash evaporation deamination technology, an ammonia absorption technology, an evaporative crystallization technology, a mud-mud heat exchange technology and the like. An adopted flash evaporation deamination tower (3) is internally divided into a plurality of areas, ammonia-containing biogas slurry sequentially flows through the areas and is in countercurrent contact with circulating steam and fresh steam in the areas, ammonia nitrogen in the biogas slurry is removed through steam stripping and flash evaporation, and the generated deaminated biogas slurry completely flows back to an anaerobic fermentation system; ammonia in the ammonia-containing steam is absorbed by dilute sulfuric acid in an ammonia gas absorption tower (9), an ammonium sulfate solution is generated and sent to an evaporative crystallization tank (16), indirect heating and circulating evaporative crystallization are adopted, and solid ammonium sulfate is transported outwards; the mud-mud heat exchanger (2) is suitable for heat exchange between non-Newtonian fluid materials. Biogas slurry is no longer discharged, and fixed asset investment of anaerobic fermentation projects with the same gas production scale is reduced.

The invention provides a leavening agent and a preparation method thereof, and belongs to the technical field of leavening agents. According to the scheme, an efficient fermentation system is constructed through the synergistic effect of bacillus amyloliquefaciens, bacillus licheniformis, lactobacillus plantarum and saccharomyces cerevisiae, in the initial stage, the bacillus amyloliquefaciens secretes amylase and phytase degradation substrates, and conditions are created for the saccharomyces cerevisiae to metabolize monosaccharide to generate flavor substances and vitamins; in the middle stage, bacillus licheniformis decomposes protein to release amino acid, lactobacillus plantarum regulates pH through lactic acid metabolism to inhibit infectious microbes, and a multi-layer encapsulated compound enzyme preparation is introduced to synergistically degrade a complex substrate; in the later stage, fructooligosaccharide in the prebiotics-buffer stabilizer promotes proliferation of probiotics, mannitol and chitosan protect the activity of thalli and the function of metabolic enzymes, and the fermentation environment is stabilized; according to the whole system, the functionality, the environmental adaptability and the storage stability of the leavening agent are improved through flora synergistic metabolism, dynamic fermentation condition control and the action of the multifunctional additive, and the diversified requirements in industrial production are met.