150results about How to "Shorten the fermentation cycle" patented technology

The invention relates to the technical field of fermentation, in particular to a dough fermentation temperature control device which comprises a fermentation box, a heating device, a cooling device, a rotating shaft, a dough bearing disc and a dough elasticity detection device. Judging whether the initial heating power of the heating device needs to be adjusted according to the fermentation temperature rise slope comparison result to obtain second heating power; according to the fermentation temperature comparison result, whether a cooling device is started or the current fermentation dough temperature is detected or the fermentation dough continues to be heated with second heating power is judged; judging whether the volume of the fermented dough needs to be detected or not according to the fermentation temperature comparison result; and adjusting the second heating power according to the volume growth curve comparison result to obtain second constant heating power. By measuring the temperature, the volume and the elasticity of the dough, the fermentation temperature in the fermentation process is adjusted, so that the dough fermentation accuracy is ensured.

The invention relates to the technical field of aerobic composting, in particular to a material turning device for aerobic composting and a layered turning method. The material turning and throwing device for aerobic composting comprises a walking mechanism, a supporting frame and a turning and throwing assembly, the turning and throwing assembly comprises a first turning and throwing roller assembly and a second turning and throwing roller assembly, and the first turning and throwing roller assembly is higher than the second turning and throwing roller assembly and turns and throws materials entering a turning and throwing channel in a layered mode; the second turning and throwing roller assembly comprises a roller shaft, a cutter structure and an adjusting structure used for driving the cutter structure to stretch out and draw back in the radial direction of the roller shaft, a telescopic part of the adjusting structure and the roller shaft are coaxially arranged, the adjusting structure is used for driving an adjusting rod to move in the axial direction of the roller shaft, and a mounting base corresponding to the cutter structure is arranged on the adjusting rod; the cutter structure is connected with the mounting seat through a connecting rod. According to the material turning and throwing device for aerobic composting, the turning and throwing effect is improved, the uniformity of turning and throwing materials is improved, the energy consumption is reduced, and the fermentation period of aerobic composting is shortened.

The invention relates to the technical field of fertilizers, and discloses a fulvic acid fertilizer based on straw microbial fermentation and a preparation method and application thereof.The preparation method comprises the steps that straw is crushed and subjected to low-temperature plasma pretreatment, and pretreated straw is obtained; then, culturing the mixed microbial preparation to prepare a culture solution; then, the pretreated straw, a nutrient solution, a fermentation auxiliary agent and trichoderma are mixed for fermentation, and therefore a fermentation product is generated. The fermentation auxiliary agent is prepared from seaweed meal, bean flour, humus soil and molasses. And finally, carrying out solid-liquid separation on the fermentation product, and drying the separated solid part to finally obtain the fulvic acid fertilizer. Through combination of low-temperature plasma pretreatment and an innovative fermentation auxiliary agent, the preparation process of the fulvic acid fertilizer is optimized, the fertilizer efficiency of the fertilizer and the crop growth effect are improved, and meanwhile, the environment problem of agricultural waste is solved.

The invention belongs to the technical field of white spirit byproduct treatment, and relates to nutrient soil and a preparation method thereof, and the preparation method of the nutrient soil comprises the following steps: step 1, preparing a compost material: adopting white spirit brewing sludge as a compost raw material, adding a conditioner and Maotai-flavor white spirit vinasse, uniformly mixing, and adjusting the moisture content to obtain the compost material; step 2, stacking fermentation: carrying out aerobic fermentation on the compost material to obtain fermented soil; 3, nutrient soil preparation, wherein the prepared fermented soil is mixed with phosphogypsum and red mud, and the nutrient soil is obtained. A certain amount of Maotai-flavor liquor vinasse and a regulator are added into the liquor brewing sludge, so that the compost maturity of the liquor brewing sludge can be effectively accelerated, the formation of humus is accelerated, the fermentation period is shortened, and the quality of a compost product is ensured. Meanwhile, nutrient soil prepared by mixing the prepared fermented soil with ardealite and red mud is free of undesirable phenomena such as hardening or root burning and the like when used for planting.

The invention discloses a processing method capable of shortening the fermentation period and reducing the biogenic amine content for inoculated fermentation of smelly mandarin fish, and belongs to the field of food processing. The method comprises the following steps: (1) pretreating mandarin fish; (2) preparing fermentation liquor, wherein the fermentation liquor is prepared from NaCl, Chinese prickly ash, a leavening agent and water; the mass percentage concentration of each component is as follows: 0.1% of pepper, 4-8% of NaCl, 0.5-1.5% of a leavening agent and the balance of water; (3) fermentation process of smelly mandarin fish: completely immersing the fish body in the fermentation liquid, respectively fermenting for 6-12 days at the temperature of 5-20 DEG C, and collecting a smelly mandarin fish sample; and (4) performing vacuum packaging: performing vacuum packaging on the collected smelly mandarin fish samples, and performing cryopreservation at-18 DEG C. The leavening agents are lactobacillus sake, pediococcus pentosaceus, lactobacillus plantarum and mixed strains (lactobacillus sake, pediococcus pentosaceus and lactobacillus plantarum in a ratio of 1: 1: 1) respectively. The fermentation period of the siniperca chuatsi is shortened through inoculated fermentation, the content of biogenic amine is reduced, and the method has very high application and popularization value.

The invention provides a method for increasing the fermentation yield of L-lysine, and belongs to the field of L-amino acid fermentation. The method for improving the fermentation yield of L-lysine comprises the following steps: preparing a shake-flask culture solution, preparing a seed solution, and carrying out fermentation culture. According to the method for improving the fermentation yield of the L-lysine, the tolerance of thalli to high osmotic pressure can be effectively improved, the acid production performance in the later period of fermentation is improved, and the single-tank yield and the sugar-acid conversion rate of the L-lysine are improved; meanwhile, the adverse effect of the osmotic pressure regulator on the fermentation stability of the L-lysine is further reduced, and the problems of inhibition of thallus metabolism, prolonging of the fermentation production period and reduction of the fermentation efficiency due to excessive addition of the osmotic pressure regulator are effectively avoided.

The invention discloses a multi-group and multi-stage anaerobic fermentation treatment method for organic solid waste, and relates to the technical field of waste treatment, the method comprises the following specific steps: waste pretreatment; the organic solid wastes are classified, crushed, screened and subjected to moisture regulation, so that the organic solid wastes reach a state suitable for anaerobic fermentation; screening and cultivating strains; screening and cultivating efficient microbial strains suitable for organic solid waste treatment; performing multi-group and multi-stage anaerobic fermentation; dynamically monitoring, regulating and controlling microbial communities; and post-processing. By introducing an advanced microbiological detection technology, dynamic monitoring and regulation of the microflora in each stage of fermentation unit are realized, the structure and change trend of the microflora in the fermentation process are accurately reflected, and a scientific basis is provided for timely adjustment of fermentation parameters; conditions such as nutrient substance addition, temperature and pH value are adjusted according to monitoring results, so that the stability and activity of microbial communities are maintained, and the fermentation process is always in an optimal state.

The invention belongs to the field of environmental microorganisms, and discloses a high-temperature-resistant efficient nitrosation complex microbial inoculant and an application of the high-temperature-resistant efficient nitrosation complex microbial inoculant in aerobic composting of livestock and poultry manure, and the complex microbial inoculant comprises bacillus firmus CCTCC M 20241091, vinca bacillus CCTCC M 20241092, and achromobacter xylosus CCTCC M 2024620. The compound strain can accelerate conversion of ammonium nitrogen into nitrite nitrogen during aerobic composting of livestock and poultry manure, so that the amount of NH4 < + >-N converted into NH3 in the composting process is reduced, and nitrogen loss caused by volatilization of ammonia gas is reduced. The nitrosobacteria agent has the advantages of high conversion efficiency, simple operation and no secondary pollution, and is an effective method for reducing nitrogen loss and ammonia volatilization in the aerobic composting process.

The invention discloses a fermentation process for efficiently synthesizing Ectoine by shortening a fermentation period, which is characterized in that the fermentation process for producing Ectoine by fermenting engineering escherichia coli taking glucose, xylose and arabinose as a mixed carbon source is adopted, so that the fermentation time is shortened to 40.5 h, the yield of Ectoine can reach 112.2 g / L, the production efficiency of Ectoine reaches 2.77 g / L / h, and the yield of Ectoine is greatly improved. And compared with fermentation production of Ectoin by taking glucose as a carbon source, the efficiency is improved by 132%.

The invention discloses a comprehensive utilization method and system for high-value organic wastes and adjustable target products, and belongs to the technical field of resource utilization of organic wastes. The system comprises gasification and carbonization equipment, an afterburning type waste heat boiler, a gas generator set, steam explosion equipment, activated carbon preparation equipment, anaerobic fermentation equipment, a methanol preparation system, flue gas waste heat recycling equipment, an ammonia gas preparation system, biomass charcoal pure oxygen combustion equipment, a green hydrogen preparation system and a biodiesel preparation system. The three technologies of gasification carbonization, steam explosion and anaerobic fermentation are coupled, the treatment efficiency is greatly improved, deep resource utilization of organic solid waste and organic wastewater is achieved through the same set of equipment, the equipment investment is reduced, and the occupied area is reduced; biomass green electric power generated by the gas generator set is used for splitting water to produce hydrogen and oxygen; and secondary gradient utilization and material reutilization of the waste heat of the flue gas are realized.

The present invention provides a method for increasing the fermentation yield of L-lysine, and belongs to the field of L-amino acid fermentation. The method for increasing the fermentation yield of L-lysine is composed of the following steps: preparing a shake flask culture solution, preparing a seed solution, and fermenting and culturing. The method for increasing the fermentation yield of L-lysine of the present invention can effectively improve the tolerance of the bacterial body to high osmotic pressure, improve the acid production performance in the late fermentation period, and improve the single-tank yield and sugar-acid conversion rate of L-lysine; at the same time, further reduce the adverse effects of osmotic pressure regulators on the fermentation stability of L-lysine, and effectively avoid the problem of excessive addition of osmotic pressure regulators inhibiting bacterial metabolism, extending the fermentation production cycle, and reducing fermentation efficiency.

According to the livestock and poultry manure stacking fermentation device, a stacking box body is stacked, a heat preservation box body is arranged outside the stacking box body, the material stacking amount is increased, meanwhile, the occupied area is small, stacking of different layers can be conducted according to the types of different fermentation materials, for example, pig manure is low in organic matter content, many in crude fiber, short in fermentation period and small in layer number; the chicken manure is high in organic matter content, long in fermentation period and large in layer number; sludge is complex in organic matter component, high in organic matter content, long in fermentation period and large in layer number. Materials are subjected to multi-layer fermentation stirring in the heat preservation box body, heat preservation treatment is carried out through the heat preservation box body, the fermentation effect is improved, meanwhile, air inlet holes are formed in the lower portion, exhaust holes are formed in the upper portion, and under the influence of heat generated by fermentation, air at the lower portion rises and is exhausted through the exhaust holes, so that external air enters through the air inlet holes at the lower portion; air flow is formed, air is supplemented into the heat preservation box body, and enough oxygen is provided for fermentation.

The invention discloses an integrated device for preparing granular fertilizer from breeding sludge, which comprises a shell I, a composting unit, a spiral lifting dryer and a rolling brush, the composting unit is arranged in the shell, the top of the shell I is provided with a feed inlet and is communicated with the composting unit, the spiral lifting dryer is sleeved on the outer side of the composting unit, and the rolling brush is arranged in the shell I; a plurality of rolling brushes are movably arranged between the inner wall of the shell I and the spiral lifting drying machine, a material carrying conveying belt is arranged in the spiral lifting drying machine, the material carrying conveying belt at an outlet extends to a bottom inlet of the spiral lifting drying machine along the rolling brushes, and a bottom outlet of the composting unit is formed above the material carrying conveying belt at the inlet of the spiral lifting drying machine; a fertilizer particle outlet is formed in the position, below the rolling brush, of the shell I, and a heat preservation layer is arranged in the shell I; the device strengthens aerobic composting of the culture sludge through temperature control and the action of the magnetic field, dries the sludge at the temperature generated by the composting unit to prepare the granular fertilizer, and has the advantages of simple structure and operation, high efficiency, high economic benefit and the like.

The invention relates to a pre-fermentation method for improving biogas production of straws and a biogas production fermentation system. The pre-fermentation method comprises the following steps: S1, preparing a mixed microbial agent to be fermented; the mixed microbial agent is prepared by inoculating the following zymophyte in parts by weight into a fermentation culture medium according to the total inoculation amount of 3-10% (v / v): 5-50 parts of bacillus subtilis, 10-20 parts of white-rot fungi, 5-10 parts of aspergillus oryzae, 5-10 parts of trametes versicolor and 5-10 parts of trichoderma viride; s2, uniformly mixing the mixed microbial agent with the micro-nano bubble water, and fermenting to form an enhanced hydrolysis bacterium solution containing a microbial agent fermentation solution and an enzyme solution; s3, spraying enhanced hydrolysis bacteria liquid onto the straws for enhanced hydrolysis so as to complete pretreatment before fermentation and biogas production; wherein the volume of the reinforced hydrolytic bacteria liquid required by each kg of straw is 3-5L. Compared with the prior art, the mixed microbial agent and the micro-nano bubble water are used for carrying out cooperative treatment on the straw, so that the gas production efficiency and the methane production amount of the straw can be effectively improved.

The invention provides a segmented direct vat set chilli sauce composite leavening agent and a method for preparing chilli sauce by using the same, and belongs to the technical field of food fermentation. The composite leavening agent comprises a leavening agent 1 and a leavening agent 2, wherein the leavening agent 1 is prepared from freeze-dried powder of plant lactobacillus CICC 25125, freeze-dried powder of lactobacillus acidophilus CICC 6094 and freeze-dried powder of leuconostoc mesenteroides CICC 24385, and the leavening agent 2 is prepared from freeze-dried powder of saccharomyces cerevisiae, a fermentation accelerant and garlic essential oil. The composite leavening agent can effectively control the fermentation process, perform segmented intensified inoculation, increase the acid production rate, shorten the fermentation period and reduce the generation of nitrite in the fermentation process. The invention further provides a method for preparing the chilli sauce by using the composite leavening agent, and the prepared chilli sauce is low in nitrite content, presents soft and rich fruity flavor and is high in flavor.

The invention discloses a household garbage undersize humus resourceful treatment system and method, and belongs to the technical field of solid waste treatment. Comprising the following steps: mounting an aeration pipeline in a bottom groove of a fermentation unit of the humus soil recycling site, and connecting the aeration pipeline with a fan system outside the fermentation unit; a broken stone hardcore and an isolating layer are sequentially arranged on the aeration pipeline of the fermentation unit; humus soil which is uniformly mixed with a high-temperature fermentation inoculant is contained on the isolation layer in the fermentation unit, and the humus soil is covered with a high-molecular intelligent film; the humus soil is subjected to automatic fermentation control, so that resourceful treatment of the humus soil is realized. According to the method, the exclusive high-temperature fermentation inoculant is added into the humus soil, and organic matters in the humus soil can be stably, efficiently and environment-friendly removed by adopting a high-molecular intelligent membrane automatic fermentation technology, so that the treated humus soil meets the engineering construction backfill soil requirements, and the tail-section treatment problem of the screened humus soil can be thoroughly solved; the method has popularization significance in the field of stock household garbage disposal.

The invention is suitable for the technical field of fermentation equipment, and provides fertilizer production fermentation equipment which comprises an equipment frame, a side cover, a fermentation box and a rotating mechanism and further comprises a center shaft, a transmission mechanism and a variable control mechanism, the center shaft is located in the fermentation box, spiral blades are installed on the outer wall of the center shaft, and a cavity is formed in the middle of the center shaft; the transmission mechanism is respectively connected with the fermentation box and the variable control mechanism. According to the fertilizer production fermentation equipment disclosed by the invention, the rotating mechanism drives the fermentation box to revolve, the fermentation box drives the transmission mechanism to rotate, and the variable control assembly is intermittently matched with two rotating powers which are output by the transmission mechanism and are opposite in rotating direction, so that the central shaft and the spiral blades are driven to rotate in a reciprocating manner; according to the fermentation equipment, fermentation materials can revolve along with the fermentation box and can also reciprocate in the fermentation box, so that the fermentation materials are fully and quickly mixed, the fermentation period of the fertilizer is shortened, and the fermentation efficiency and the fermentation quality of the fermentation equipment on the fertilizer are improved.

The invention provides a genetically engineered bacterium for producing R-2-(4-hydroxyphenoxy) propionic acid at high yield as well as a construction method and application of the genetically engineered bacterium. Based on metabolic engineering and efflux transport engineering strategies, transmembrane transport protein coding genes selected from an NPF protein family and an SWEET protein family are constructed into beauveria bassiana capable of producing R-2-(4-hydroxyphenoxy) propionic acid, and genetic engineering bacteria capable of stably and highly producing R-2-(4-hydroxyphenoxy) propionic acid are constructed. Compared with a control strain, an experimental group has the advantages that the yield of R-2-(4-hydroxyphenoxy) propionic acid subjected to liquid fermentation is remarkably increased, and the fermentation period is shortened. The method for constructing the high-yield R-2-(4-hydroxyphenoxy) propionic acid gene engineering strain by transforming the beauveria bassiana on the basis of efflux transport engineering provides an important target for efficiently producing the R-2-(4-hydroxyphenoxy) propionic acid by transforming the beauveria bassiana, and has an industrial application prospect.

The invention discloses capsaicin-tolerant lactobacillus plantarum and application thereof in pickled pepper fermentation, and belongs to the technical field of microorganisms. The lactobacillus plantarum MYL-6 provided by the invention is preserved in the China Center for Type Culture Collection on August 10, 2023, and the preservation number of the lactobacillus plantarum MYL-6 is CCTCC (China Center for Type Culture Collection) M 20231407. According to the invention, a fusion strain MYL-6 is constructed through inactivation of parents and protoplast fusion. Experimental results prove that the prepared lactobacillus plantarum strain MYL-6 not only has the capacity of producing lactic acid at high yield, but also has the characteristic of capsaicin tolerance, after the lactobacillus plantarum provided by the invention is used for fermenting pickled peppers, the lactic acid content is increased, the acid fragrance is improved, the fermentation period of the pickled peppers is shortened, the quality of the pickled peppers can be improved, and the production cost is reduced. The method has huge application potential in the pickled pepper manufacturing industry.

The invention discloses probiotic escherichia coli with stress resistance and application of the probiotic escherichia coli, and belongs to the technical field of microorganisms. The probiotic escherichia coli provided by the invention is named as the probiotic escherichia coli (Escherichia coli Nissle1917) EcN223-YTP, the probiotic escherichia coli is preserved in China Center for Type Culture Collection in Wuhan on August 16, 2024, and the preservation number is CCTCC NO: M 20241801. Compared with the existing EcN strain, the probiotic escherichia coli EcN223-YTP provided by the invention has stronger growth activity, still keeps rapid growth in a stable period, can rapidly increase the viable count, and obviously shortens the fermentation period. The strain has stronger stress resistance characteristics including high temperature resistance, low temperature resistance, low pH, high bile salt, low oxygen, bacteriophage infection and the like, so that the strain has more stable activity and longer shelf life, is easier to preserve and is suitable for development and application.

The invention discloses a preparation device of vitamin K2, and relates to the technical field of vitamin preparation. The preparation device comprises a tank body, a stirring part rotates forwards in the tank body and the tank body rotates backwards and turns over under the cooperation of a connecting mechanism through operation of a rotating mechanism, and the stirring part stretches out and draws back in a reciprocating mode under the action of a linkage part; the stirring part is adjusted to stretch out and draw back through operation of the switching part so that the stirring part can be attached to the inner wall of the tank body; in the moving process of the switching part, the auxiliary mechanism operates so as to introduce disinfection gas into the tank body. The device has the advantages that the whole raw materials are turned over and disturbed while the fermentation raw materials are stirred through forward and reverse rotation, the raw materials are prevented from being stacked and moving in a large range, the mixing effect of the raw materials and the heating uniformity degree are greatly improved, operation of the device can be switched, and the device is convenient to use. The interior of the fermentation device can be efficiently cleaned, the wall scraping effect is achieved, meanwhile, disinfection and sterilization are assisted, and excellent intelligence and practicability are achieved.

The application provides a method for dynamically regulating alcohol content to enhance the flavor of solid vinegar, comprising the following steps: S1, liquefaction; S2, saccharification; S3, alcohol fermentation; S4, solid-state layered fermentation; and S5, finished product preparation. The vinegar preparation method has the advantages that the fermentation performance is improved, the fermentation period is shortened, the conversion rate of acetic acid is improved, the biomass of bacteria is increased, the growth of acetic acid bacteria is as good as possible, the rate of acetic acid fermentation is improved, the period of acetic acid fermentation is shortened, the flavor of liquid-state fermented vinegar is improved, the irritation of solid-state fermented vinegar is reduced, and the method has a good market application prospect.

The application provides a kind of biological organic fertilizer efficient aerobic fermentation device, it relates to organic fertilizer fermentation technical field, including: base;The base is fixed with support, the upper portion of support is hinged with baffle, and support is installed with screw rod lifting seat A and screw rod lifting seat B by bolt, and the screw rod in screw rod lifting seat A and screw rod lifting seat B is connected with the lower end of baffle by pin shaft, and the input shaft of screw rod lifting seat A is connected with the input shaft of screw rod lifting seat B with connecting rod;The application integrates stirring, oxygen supply, fungicide spraying, material conveying, waste gas treatment and other multiple functions, forms complete fermentation process system, through the collaborative work of each hydraulic rod, motor and transmission mechanism, can be flexibly adjusted according to different material characteristics and fermentation process parameters, is suitable for efficient fermentation production of various biological organic fertilizer, has strong environmental adaptability and process expandability, helps to improve the automation level and product quality stability of organic fertilizer production.

The invention relates to the technical field of biomass energy production, in particular to equipment and a process for preparing biomass natural gas through dry-type high-temperature anaerobic ferment.The equipment comprises a fermentation box body, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe and a gas outlet pipe, a first frame, a second frame and a third frame are sequentially arranged on the inner wall of the fermentation cavity in a staggered mode in the vertical direction, the material crushing and liquid supplying assembly comprises a material crushing mechanism and a pre-inoculation mixed liquid supplying mechanism, and the material uniformizing and stirring mechanism comprises a material uniformizing mechanism and a stirring frame mechanism. Therefore, the process of preparing the biomass natural gas through dry-type high-temperature anaerobic fermentation is realized, the problems of long retention time and low treatment efficiency are solved, the gas production rate and the production efficiency of the biomass natural gas are improved, and powerful support is provided for popularization and use of clean energy.

The invention provides an integrated process formula based on high-efficiency prunus humilis Bunge distilled liquor, and relates to the field of liquor making, and the integrated process formula is characterized by comprising the following steps: step 1, pretreating prunus humilis Bunge raw materials, cleaning and crushing fresh prunus humilis Bunge fruits, and adding a compound enzyme preparation in a specific proportion for enzymolysis treatment; step 2, adopting a sectional fermentation process, and firstly carrying out pre-fermentation; the method disclosed by the invention has the advantages that through an integrated process of combining compound enzyme preparation synergistic treatment, sectional precise fermentation, multi-stage distillation purification and ageing blending, the fermentation period is shortened by 50% or more, the alcohol extraction rate is increased to 85%, 70% or more of core nutritional ingredients such as calcium, iron, zinc and vitamin C in the Prunus humilis Bunge are effectively reserved, and the quality of the Prunus humilis Bunge is improved. The aroma level and flavor uniqueness of the wine body are remarkably enhanced, the efficient and low-consumption production of the high-quality prunus humilis bunge distilled wine is successfully realized, and the industrialization bottlenecks of the traditional process in the aspects of efficiency, quality and cost are comprehensively broken through.

The invention provides a method for increasing the fermentation unit of acarbose. The method mainly comprises the step of adding metal ions into a fermentation culture medium. According to the method, metal ions such as copper sulfate, zinc sulfate or manganese sulfate and the like are added into the fermentation culture medium, and ferric chloride is added in a matched manner, so that the fermentation titer of acarbose is increased to 8.83 mu g / mL under the condition of not changing strains and the fermentation culture medium, and the fermentation unit of acarbose is remarkably increased; in addition, the fermentation period is shortened, and the production cost is reduced.

The utility model relates to a kind of biofertilizer fermentation tanks. Including installation rack, fermentation tank inner shell is movably connected on it, temperature control structure is sleeved on the outer wall of fermentation tank inner shell;Several air vents and pressure gauge are provided at the top of fermentation tank inner shell;Discharge valve is provided at the bottom of fermentation tank inner shell;It further includes transverse stirring subassembly;Transverse stirring subassembly includes transverse stirring mechanism and stirring driving part;It further includes tank body driving device;Multiple groups of down turnover material assembly are provided at the bottom of fermentation tank inner shell;Down turnover material assembly includes sealing sleeve structure, stirring blade shaft is rotatably connected in sealing sleeve structure, several stirring blades are installed on stirring blade shaft, and it further includes rotating electrical machine.The utility model uses bidirectional drive, so that fermentation tank body swings, cooperate stirring piece to stir the material inside tank body, improve the mixing efficiency of material, make biofertilizer mix more uniform, to help improve fermentation efficiency.

The application discloses a kind of shiitake mushroom culture medium fermentation inoculant, belong to shiitake mushroom fermentation culture medium preparation technical field, the application is screened by the screening test of strain, and fermentation temperature raising agent and ammonia assimilator are screened, in the fermentation process of culture medium, while adding the two inoculants, can effectively promote fermentation temperature, inhibit the growth of miscellaneous bacteria, shorten fermentation period, improve shiitake mushroom bag inoculation quality.

The present invention relates to a method for the production of protein glutaminase (protein-glutaminase; the EC is 3.5. 1.44; the present invention relates to a seed medium composition and a fermentation medium composition for a PG enzyme (e.g., PG enzyme). The invention relates to a method for producing PG enzyme through fermentation. The method comprises the following steps: fermenting for 3-8 hours by adopting a fermentation medium composition, and feeding a nutrient composition, and supplementing the surfactant composition when the fermentation is carried out for 13-18 hours. According to the method, the fermentation period can be shortened by 29%, the fermentation enzyme activity is improved, and the enzyme activity can reach 12.3 U / ml after 20-hour fermentation.

The utility model discloses a kind of citric acid fermentation fine filter devices, belong to citric acid production technical field.Device is composed of fermentation unit and fine filter unit: fermentation unit contains seed tank and fermentation tank, the feed inlet of seed tank is connected with syrup turbid liquid pipe, the feed inlet of fermentation tank is connected with syrup clear liquid pipe and syrup turbid liquid pipe, seed tank and fermentation tank are configured with steam, compressed air, defoaming agent, emptying and circulating water pipeline.Fine filter unit first removes most solid impurities with primary plate-and-frame filtration, then ceramic membrane fine filtration and anion and cation exchange impurity removal.Two-stage filter-pressing acid residue is dried after being thickened and then filter-pressing to be feed, and two-stage filtrate respectively enters subsequent process.The device can greatly reduce labor cost and failure rate, improve citric acid purity and yield, and meet the needs of large-scale, high-quality and green production.