141 results about "Continuous fermentation" patented technology

The preparation method comprises the following steps: mixing corncobs, a carbon source, rice husks, a nitrogen source and a conditioner, and adjusting the initial moisture content of the mixture to 55-65% so that the C / N ratio reaches (25-30): 1 to obtain a pile body; covering the surface of the pile body with a nano microporous membrane, starting an aeration system in a high-temperature stage, adjusting the air pressure difference inside and outside the membrane to 50-100Pa in a cooling stage, and continuously fermenting; after 7-10 days of fermentation, when the pH value of the base material is stable and the total nutrient meets the requirement, the fermentation is completed, the base material is bagged and sterilized, and the tricholoma matsutake cultivation base material is obtained. According to the method, the fermentation period is shortened to 1 / 3-1 / 2 of that of a traditional method, and the production efficiency is improved. In addition, the infectious microbe contamination rate of the base material is reduced, the purity and quality of the base material are improved, and a healthier environment is provided for growth of tricholoma matsutake. And the yield of tricholoma matsutake is increased by 40%. Not only is the yield of tricholoma matsutake increased, but also the nutritional value of tricholoma matsutake is improved, and higher economic benefits are brought to farmers.

The invention relates to the technical field of feed fermentation production, in particular to microbial feed fermentation equipment and a fermentation method. The microbial feed fermentation equipment comprises a fermentation barrel and a drum-type vacuum stirring tank; the fermentation method of the microbial fermented feed comprises the three steps of fermentation liquor preparation, vacuum injection of the fermentation liquor into the expanded feed and continuous fermentation of the microbial feed, air in the drum-type vacuum stirring tank is emptied, negative pressure in the tank is kept, and the fermentation liquor uniformly permeates into the expanded feed, so that the situation that the fermentation liquor stays on the surface and is not uniformly distributed is avoided; a feed puffing process causes that strains cannot survive after puffed particles are prepared at high temperature in a traditional way of fermenting raw materials. According to the invention, through secondary fermentation and re-injection of the fermentation broth, the strain activity is fully ensured, the feed is subjected to secondary fermentation, and the feed quality is comprehensively improved.

The invention discloses continuous fermentation equipment for compound fermented sauce, and particularly relates to the technical field of food fermention.The continuous fermentation equipment comprises a support, a hydrolysis tank, a fermentation tank and an after-ripening tank are installed on the support from top to bottom in a stepped mode, and the hydrolysis tank and the fermentation tank are communicated through a first spiral pump; the fermentation tank is communicated with the after-ripening tank through a second screw pump. According to the continuous fermentation equipment for the compound fermented sauce, the dynamic extraction circulating device is arranged, flavor precursor substances can be actively extracted, subjected to ultrasonic wall breaking and subjected to membrane filtration and concentration from main fermented mash and then directly conveyed to the after-ripening tank, high-concentration flavor essence is provided for the after-ripening stage, after-ripening reactions such as esterification are greatly promoted, and the quality of the compound fermented sauce is improved. According to the method, the flavor level of the final product is richer, inhibition on main fermentation is relieved by actively removing small molecule byproducts, flavor precursors are forcibly conveyed to an after-ripening environment, the flavor ripening process is accelerated, and the whole fermentation period is shortened.

The invention provides high-protein fermented milk as well as a preparation method and application thereof, and relates to the technical field of dairy products. The preparation method of the high-protein fermented milk comprises the following steps: S1, inoculating a fermentation base material with a fermentation inoculant, applying ultrasonic treatment, and finishing the ultrasonic treatment until the ultrasonic energy density of a fermentation system is 10-25kJ / L, the ultrasonic treatment power is 100-200W, and the frequency is 15-25kHz; s2, neutral protease is added into the secondary fermentation system for continuous fermentation treatment, the enzyme activity of the neutral protease is larger than or equal to 5000 U, and the adding amount is 0.01 wt%-0.04 wt%. According to the method, ultrasonic treatment and protease are combined to treat and ferment a high-protein product, so that the fermentation speed is further increased, the system viscosity of the high-protein fermented milk is effectively reduced, the problem of rough texture caused by high protein content is solved, the particle size of the fermented milk is relatively small, and the fineness and stability of the product are improved.

The invention discloses a rhamnose continuous production system and a rhamnose continuous production method. A rhamnolipid continuous fermentation system and a rhamnolipid continuous hydrolysis system are coupled. The system comprises a fermentation tank, an overflow tank, a ceramic membrane, a rhamnolipid continuous hydrolysis reactor and the like. By adopting the method to produce rhamnose, the problem that the fermentation temperature of rhamnolipid is inconsistent with the hydrolysis temperature of rhamnolipid is solved, the hydrolysis reaction efficiency of rhamnolipid is improved, meanwhile, the influence of rhamnolipid bubbles on a fermentation system is also solved, the production efficiency of rhamnose is improved, the production cost of rhamnose is reduced, and good economic benefits are achieved.

The utility model relates to the technical field of bread production, in particular to fermentation equipment which comprises a fermentation box, a box door, a handle, a rotating assembly and a heating assembly, an opening is formed in the side wall of the fermentation box, the box door is connected to the opening through a hinge, the side wall of the box door is used for being connected with the handle, and the inner bottom face of the fermentation box is used for being connected with the heating assembly. The rotating assembly is connected to the fermentation box. In the using state, the rotating assembly can rotate with the central axis of the fermentation box as the circle center, and the multiple layers of evenly-distributed overturning assemblies connected to the overturning assemblies can rotate around the fermentation box and rotate at the same time, so that to-be-fermented dough contained in the overturning assemblies is overturned, fermentation is more uniform, and the fermentation efficiency is improved. Meanwhile, a vessel for containing the dough can be quickly detached from and mounted on the overturning assembly so as to shorten the time required for continuous fermentation of the dough, and the vessel and the overturning assembly are arranged in a split manner so as to shorten the time required for cleaning and replacing the vessel.

The invention discloses a uniform fermentation device for primary processing of decoction piece tea products, and belongs to the field of fermentation equipment, the appearance structure of a fermentation cavity is improved, and a rotatable rotary bracket mechanism is arranged, so that each material frame can be respectively rotated into an opening frame of a feeding opening; therefore, the effect of sequentially and respectively replacing the decoction piece tea products in the material frame is achieved, the device does not need to be shut down in the replacement process, the operation performance of continuous fermentation of the decoction piece tea products in batches is achieved, and the front door does not need to be completely opened in the replacement process of the decoction piece tea products. The fermentation environment set in the fermentation cavity is not directly exposed in the external environment, so that the fermentation environment set in the fermentation cavity can be better maintained, and in the continuous fermentation process of batch decoction piece tea products, the device can maintain the fermentation environment condition in the fermentation cavity without restarting or transient starting, so that the fermentation efficiency is improved. The operation energy consumption of the device is greatly reduced, and the effects of energy conservation and emission reduction are achieved.

The application discloses a method for continuously fermenting urine to produce safe fertilizer, which comprises the following steps: in the first fermentation, adding environment-friendly enzyme into a container, then collecting fresh urine and adding molasses, and carrying out fermentation in a sealed manner; after the fermentation is completed, reserving part of the fermentation liquor as a substrate; and in the subsequent batches, directly adding fresh urine and molasses into the container with the substrate to carry out fermentation, so as to realize continuous circulation. The method can inhibit the hydrolysis process of urea in the urine in the early stage by timely adding environment-friendly enzyme (or the fermentation liquor of the last time) and molasses into the fresh urine to carry out fermentation, thereby greatly reducing the ammonia nitrogen volatilization amount, and the pathogenic bacteria in the urine can be inhibited to a very low level in a short period of time. Except that the environment-friendly enzyme needs to be added in the first fermentation, the environment-friendly enzyme does not need to be added in the subsequent batches of fermentation, and only a small amount of molasses needs to be added. A large amount of beneficial bacteria such as lactic acid bacteria and yeast and metabolic products such as lactic acid and acetic acid are generated in the fermentation process, so that the urine is converted into microbial bacterial fertilizer.

The invention belongs to the technical field of valine fermentation, and particularly relates to a method for producing valine through fermentation and a fermentation device for producing valine. The invention provides a method for producing valine by fermentation, which is characterized in that fermentation tanks with different height-diameter ratios are used for producing valine by fermentation, a fermentation tank with a large height-diameter ratio is adopted during thallus growth, and a fermentation tank with a small height-diameter ratio is adopted during valine production. Meanwhile, low-oxygen-content tail gas of first fermentation culture (aerobic fermentation) is used for providing air for second fermentation culture (anaerobic fermentation), semi-continuous fermentation of valine is achieved, the processes of first-stage and second-stage seed propagation of microorganisms and seed tank sterilization and cleaning are omitted, the equipment utilization rate is greatly increased, the fermentation production chain is shortened, the microbiological contamination probability is reduced, and the yield of valine is increased. The fermentation period is shortened. According to the method provided by the invention, the requirement on personnel in the fermentation process is low, the control of the fermentation process is more accurate, gas and energy are saved, the conversion rate of valine and the utilization rate of a fermentation tank are improved, and the fermentation efficiency is high.

The invention discloses a pickle fermentation method for delaying acidification of pickles, and relates to the technical field of industrial pickle fermentation. The pickle fermentation method comprises the following steps: preparing a spice mixture from 20-35 parts of black pepper, 20-30 parts of netmeg, 35-45 parts of garlic, 5-10 parts of Chinese prickly ash, 5-10 parts of rhizoma kaempferiae and 5-10 parts of cinnamon; mixing the spice mixture with an alcohol solution, and extracting to obtain an extract solution; putting raw material vegetables into a container, preparing salt brine, putting the salt brine into the container, and fermenting at normal temperature to obtain maturely fermented pickles; adding 0.5%-2% of the extract solution into the fermented and matured pickles, and uniformly stirring; by preparing the spice extract solution, continuous fermentation of lactic acid bacteria of the pickles can be effectively inhibited, the acidity of the pickles is kept stable, the sour, fragrant, crisp and tender taste of the pickles is kept, the obtained pickle product is good in quality, and the pickle fermentation method has high superiority.

The utility model discloses drum-type continuous fermentation equipment for torreya grandis, and relates to the technical field of torreya grandis processing equipment. The device comprises a moving frame and a vibrating frame arranged right above the moving frame, a net cylinder is rotationally arranged at the top of the vibrating frame, a temperature control assembly is arranged on one side in the moving frame, a vibrating motor is arranged in the center of the upper surface of the vibrating frame, and a buffering assembly is arranged between the moving frame and the vibrating frame. The temperature control assembly is used for adjusting the temperature of air in the mesh cylinder, torreya grandis is fermented at a proper temperature, the fermentation efficiency and effect of the torreya grandis are improved, the vibration motor is used for enabling the torreya grandis in the mesh cylinder to roll up and down, the fermentation efficiency of the torreya grandis is improved, and the situation that the ventilation fermentation efficiency is affected due to excessive accumulation of the torreya grandis in the mesh cylinder is avoided; and meanwhile, a spring in the buffering assembly plays a buffering role, the stress of the vibration frame and the net barrel is relieved, and the service life is prolonged.

The invention discloses a method for preparing a fermented feed from pomace and crop straw, and relates to the technical field of feed processing, and the method comprises the following steps: raw material treatment: performing rubbing treatment on corn straw; performing crushing treatment on the apple pomace; aerobic fermentation: uniformly mixing the filamentous material with the pomace powder, spraying a trichoderma reesei liquid into the mixture, and fermenting for 3-5 days under an aerobic condition; pressing and forming: after the aerobic fermentation is completed, pressing the mixed material into a cake belt with the thickness of 4-6mm through a double-roller tablet press; anaerobic fermentation is conducted, specifically, composite bacteria liquid is sprayed to the upper side and the lower side of the cake belt, the spraying amount of each square meter of the cake belt is 100-150 mL, and the composite bacteria liquid is composed of lactobacillus plantarum and saccharomyces cerevisiae according to the ratio of 3: 1; stacking the cake belt layers in a staggered manner; and feeding the cake belt into fermentation equipment, and fermenting for 2-3 days under an anaerobic condition. According to the method for preparing the fermented feed from the pomace and the crop straw, the feed is more balanced in nutrition, easy to digest and absorb and convenient for continuous fermentation production, and the fermentation product is convenient to store and transport.

The present application belongs to the technical field of in-vitro rumen fermentation simulation device, and particularly relates to a quantitative sampling device for an in-vitro rumen continuous fermentation system, comprising a fermentation equipment main body, a sampler fixed to the outer wall of the fermentation equipment main body, the sampler comprising an outer support tube, and a plurality of equidistantly arranged sampling tubes fixed to the outer wall of the outer support tube and communicated with each other. When it is needed to take out the sampling cup which has completed quantitative sampling from the gravity positioning assembly, the operator can manually pinch the two connecting rods in reverse. The action drives the T-shaped handle to be lifted from the notch where it is currently located through linkage of the two transmission rods, and drives the inner rotating tube connected therewith to move upward synchronously. At the same time, the two auxiliary plates move towards each other, drive the two clamping rods to move away from each other under cooperation of the second elastic sheet, thereby releasing the positioning constraint on the sampling cup. With the conical opening at the bottom end of the inner rotating tube lifted, sufficient space is formed below the conical opening, so that the sampling cup can be smoothly taken out.

The invention discloses a method for improving the continuous fermentation efficiency of clostridium aerovorans. According to the method, a continuous fermentation system in which a first fermentation tank and a second fermentation tank are connected in series is adopted, clostridium aerovorans is used as a production strain, and synthesis gas is used as a raw material. The method is characterized in that after thalli in a first fermentation tank enter a stable phase, a continuous process is started, the dilution degree is optimized to be 0.15-0.7, the nutrient concentration of a supplemented fresh culture medium is adjusted to be 0.65-1 time of the standard concentration, and growth and metabolism of the thalli are cooperatively regulated. According to the invention, the thallus delay period of the second fermentation tank is effectively shortened, decayed thalli are replaced, the overall flora activity is enhanced, the continuous fermentation period is obviously prolonged to more than 200 hours, the yields of ethanol and butanol are greatly improved, meanwhile, foaming in the fermentation process is effectively inhibited, and the system is simple in structure, convenient to operate and suitable for industrial application.

The invention discloses a tank type fermentation process capable of realizing collaborative emission reduction of NH3, N2O and CH4. The tank type fermentation process comprises the following steps: S1, pretreating raw materials; s2, material introduction; s3, supplementing materials; and S4, continuous fermentation. The process has the advantages of obvious environmental benefit, realization of collaborative emission reduction of greenhouse gas and odor, final reduction of the compost load, high resource utilization efficiency, realization of closed-loop circulation of water and fertilizer, reuse of nutrient-rich leachate as a nitrogen fixation carrier, realization of zero liquid discharge and nutrient in-situ recovery, increase of the total nutrient content of a compost product, and realization of environmental protection and environmental protection. The nitrogen loss is greatly reduced, and beneficial components such as zeolite and pyroligneous liquor are added, so that the content of organic matters and nutrients of the finished compost is high, the water and fertilizer retention capacity is high, essential elements for promoting plant growth are contained, and the commodity value is remarkably improved.

The invention discloses a clostridium aerovorans continuous fermentation method based on multi-parameter regulation and control, and belongs to the technical field of microbial fermentation. The method comprises the following parameter control: fermentation culture medium concentration control: in a biomass stabilization stage, gradually reducing the fermentation culture medium concentration from an initial concentration so as to reduce an acid production ratio and improve an alcohol production ratio; the CO content in the tail gas is controlled, wherein the volume fraction of CO in the tail gas is controlled to be 5-10%, and therefore the growth rate of the clostridium aerovorans is increased; dilution degree control: gradually improving the dilution degree so as to improve the fermentation yield; wherein the dilution is equal to the product of the fermentation culture medium feeding speed and 24 / fermentation liquid volume; a ceramic membrane is added, and thalli are intercepted by adding the ceramic membrane, so that the biomass is improved. According to the method, the fermentation acid-alcohol ratio can be regulated and controlled, and the fermentation rate of the clostridium aerovorans is increased.

The utility model discloses a stepped fermentation tank capable of continuously fermenting liquid organic matters to produce heat and supply heat. The stepped fermentation tank comprises a fermentation tank and liquid organic matter fermentation liquor in the fermentation tank, the fermentation tank is a stepped fermentation tank and comprises a cleaning platform and a cargo conveying step, the cargo conveying step comprises a plurality of steps from high to low, and a fermentation tank is arranged on each of the cargo conveying steps; a heat exchange pipeline is laid in the fixed pool bottom and supported by a heat exchange pipeline buttress, a pipeline hole is formed in the side fixed pool wall, a heating pipeline is arranged in the pipeline hole, and the heating pipeline is communicated with the heat exchange pipeline; cover plate buttresses are arranged on the periphery of the fixed pool wall and used for supporting a cover plate of the fermentation tank. The heating device has the advantages that compared with a traditional mode of burning organic matter such as straw, the heating device utilizes microorganisms to decompose liquid organic matter for heating, and emission of atmospheric pollutants is reduced.

The invention discloses an airlift reactor for continuous fermentation production of bile salt hydrolase, and belongs to the technical field of biological fermentation equipment. The invention discloses an airlift reactor for continuous fermentation production of bile salt hydrolase. The top of the tank body is provided with a tank cover, the tank cover is provided with a feed port, the center of the inner wall of the bottom of the tank body is provided with turbulent flow columns which are uniformly distributed, and the tops of the turbulent flow columns are fixedly connected with a positioning ring; the gas distributor is mounted at the bottom of the tank body and is used for introducing dispersed gas into the tank body so as to accelerate uniform mixing of the reaction raw materials; the magnetic coupling stirring mechanism comprises a first driving assembly installed at the bottom of the tank body, through the optimal design of an adjustable inverted-cone-shaped dynamic diffusion assembly, the substrate diffusion range and mixing uniformity are remarkably improved, substrate deposition is effectively reduced, meanwhile, key components have excellent durability and sealing performance, and the service life of the device is prolonged. Therefore, the substrate utilization rate and the production efficiency of fermentation of the bile salt hydrolase are improved.

The invention discloses a food-grade temperature-control stirring type continuous fermentation system, and relates to the field of ferment.The upper end of a fermentation tank body is provided with a driving motor assembly, and the output end of the driving motor assembly is in butt joint with a driving butt joint shaft; a built-in butt-joint rod is mounted at the upper end of the fermentation tank body in a nested manner, the lower end of the built-in butt-joint rod is in nested butt joint with the nested butt-joint assembly, and an abutting butt-joint piece is mounted at the lower end of the nested butt-joint assembly. The food-grade temperature-control stirring type continuous fermentation system is provided with the self-adaptive guide structure, the heat conduction state in the fermentation tank body is controlled through the self-adaptive guide structure, and fermentation gas needing to react along with the fermentation state in equipment is continuously and effectively supplied downwards in a circulating manner; the air is prevented from being accumulated at the inner upper end of the equipment according to the air pressure, temperature and other states, so that uniform, effective and continuous contact work with reaction materials at the bottom is kept, and the continuous fermentation quality is ensured.

The utility model belongs to the field of hyaluronic acid fermentation technology, more particularly to a kind of multi-section feed mixing intensifier for hyaluronic acid semi-continuous fermentation.The multi-section feed mixing intensifier for hyaluronic acid semi-continuous fermentation, including fermenter, fermenter top, tank body middle part and tank body bottom are all provided with feed inlet, fermenter top feed inlet is connected with storage device, storage device is provided with branch and fermenter tank body bottom feed inlet connection, fermenter tank body middle part feed inlet is connected with lye tank;Fermenter tank bottom is connected with buffer tank by conveying pump.The multi-section feed mixing intensifier for hyaluronic acid semi-continuous fermentation of the utility model, through multi-section accurate feeding, intensifying mixing and optimizing gas distribution and other structure design, realize the reasonable supply of nutrient substance in hyaluronic acid fermentation process, gas distribution is even in fermentation process, improve the dissolved oxygen rate in fermentation broth, ensure the stability of fermentation process.

The application discloses a kind of subsection continuous synergistic fermentation methods of donut dough, comprising: dry yeast A is mixed with glucose, water stirring, activation is carried out, and activated yeast is obtained;Dry yeast B is mixed with melted butter, and late wake-up yeast is made;Activated yeast, late wake-up yeast, superoxide dismutase are added to dough raw materials, and dough is made, shaping;Subsequently, subsection continuous temperature and humidity fermentation method is used, and dough leavening is completed;The application adds superoxide dismutase in dough, provides oxygen for yeast fermentation, completes the coupling fermentation of leavening agent, and uses subsection continuous fermentation in leavening process, first low-humidity fermentation, then medium-humidity constant-temperature fermentation, finally high-humidity constant-temperature fermentation, so that the expansion degree of the donut dough prepared by the method is better, and the use of additives such as baking powder can be abandoned;The three-stage fermentation method of the application can increase the volume by 20-27% compared with the traditional fermentation method.

The invention discloses a fermentation method for preparing fungal mycelia by recycling fermentation liquor. Different from the traditional semi-continuous fermentation process in which a fresh culture medium is supplemented to restart the fermentation process, the fermentation process is restarted by innovatively recovering and utilizing the fermentation liquid supernatant as the culture medium, so that the continuity of the fermentation environment and the full utilization of metabolites are realized, the strain activity is effectively maintained, and the production cost is reduced. Metabolic inhibition or death possibly caused by carbon source mutation of the strain is avoided, and the purpose of continuous and stable efficient production of fungal mycelia is achieved. The utilization rate of carbon and nitrogen sources in the culture medium is remarkably improved, so that downstream separation and purification operation is simpler; more importantly, supplement and use of a large amount of fresh culture media are reduced, the process cost is greatly reduced by 50%, and the method has high industrial popularization value.

The application discloses a method for producing lysine by immobilized continuous fermentation, and the method comprises the following steps: soaking a multi-hydroxy flexible polyester fiber carrier in soluble pectin, and drying the carrier by a dry heat method to obtain an immobilized carrier; inoculating seed liquid of cultured Corynebacterium glutamicum into a high-oxygen-bio-reactor containing the immobilized carrier and a fermentation medium, and performing batch-fed fermentation for a certain batch to immobilize the Corynebacterium glutamicum on the immobilized carrier, so that the Corynebacterium glutamicum can stably produce lysine; and switching to a mode for continuously producing lysine. The method for producing lysine by the immobilized Corynebacterium glutamicum fermentation can be stably operated for more than 15 days, and compared with free fermentation, the lysine production rate is increased by nearly 35%, and the sugar-acid conversion rate is increased by nearly 4 percentage points.

The application relates to a municipal road garbage treatment composting device which comprises a shell, a fermentation tank fixedly connected in the shell, a lower hopper fixedly connected at the bottom of the fermentation tank, a mounting frame slidably connected in the lower hopper, two butt plates clamped on the mounting frame, a filter structure comprising a clamping plate and a fine filter screen fixed on the clamping plate, wherein one of the butt plates is clamped with the clamping plate, and the other butt plate is clamped with a coarse filter screen. The leachate and fine particles can flow to the inside of the lower hopper through the fine filter screen. When the coarse filter screen moves directly below the fermentation tank, the matured material can fall into the inside of the lower hopper through the coarse filter screen, and the coarse filter screen can isolate the un-matured large material in the fermentation tank for continuous fermentation, so that the raw material is prevented from being directly mixed into the finished product, and the practicality is high.

The utility model provides a device for eliminating foam generated by continuous fermentation of molasses alcohol, which is characterized in that a No.1 feed port and a No.1 carbon dioxide discharge port of a No.1 fermentation tank are respectively arranged on two sides of the top, and a No.1 discharge port is arranged at the bottom of a tank body; a No.2 feed port and a No.2 carbon dioxide discharge port of the No.2 fermentation tank are respectively arranged on two sides of the top, a No.2 carbon dioxide discharge port is arranged in the middle of the top of the tank body, a No.2 discharge port is arranged at the bottom, and a No.2 incoming material discharge port is arranged at the upper end of the side wall; the No.1 carbon dioxide discharge port is communicated with the No.2 carbon dioxide discharge port through a carbon dioxide pipeline, and the No.1 discharge port is communicated with the No.2 incoming material discharge port through a material passing pipeline; a fermentation foam eliminating device is arranged in the second fermentation tank and is used for eliminating carbon dioxide and fermentation foam generated by the first fermentation tank and the second fermentation tank. According to the utility model, foams generated by fermentation of the No.1 fermentation tank and the No.2 fermentation tank are eliminated in time, and meanwhile, the equipment investment is reduced.

The utility model discloses a straw continuous fermentation gas production device which comprises a cylinder body, a feeding hopper is arranged at the top of the cylinder body, a stirring mechanism is arranged in the cylinder body and comprises a rotating shaft, a stirring paddle is vertically arranged on the rotating shaft, shearing teeth are vertically arranged on the side face of the stirring paddle, and the shearing teeth are arranged on the side face of the stirring paddle. A rotating shaft is arranged in the stirring mechanism, one end of the rotating shaft is connected with a driving mechanism consisting of a speed reducer and a stirring motor, a feeding mechanism is arranged below the stirring mechanism and comprises a roll shaft, a plurality of groups of spiral feeding plates are arranged on the roll shaft, and one end of the roll shaft is connected with a feeding motor. The device is scientific and reasonable in structural design, efficient mixing is achieved through the stirring mechanism, the three-dimensional shearing tooth structure enables the material mixing uniformity to be improved compared with traditional equipment, and the fermentation period is shortened; the filter plates are quickly disassembled and assembled through the clamping blocks and the clamping grooves, the replacement time of a single group of filter plates is short, and the maintenance efficiency is improved.

The invention belongs to the field of biochemical engineering, and discloses a method for producing beta-elemene through microbial fermentation, which comprises the following steps: carrying out high-pressure sterilization on a culture medium for fermentation and a certain amount of solid phase a before fermentation, inoculating a recombinant strain into fermentation liquor after the temperature is reduced, with the inoculation amount of 1-5% (V / V), and adding IPTG for induction after the OD of the recombinant strain grows to 0.8-2.0, the total amount of the solid phase in the whole reaction system does not exceed 20% (W / V), fermenting until the growth of the recombinant strain declines, after the fermentation is finished, carrying out suction filtration, collecting the added solid phase, washing with water, pouring into a beaker, adding a certain amount of an organic solvent, carrying out ultrasonic extraction, and after the extraction is complete, carrying out vacuum drying to obtain the recombinant strain. And concentrating the organic solvent in a distillation or reduced pressure distillation manner to obtain a beta-elemene crude product. According to the invention, the yield of beta-elemene in escherichia coli is increased, and the cost is reduced for subsequent industrial production.

The present invention discloses a white wine lees fermentation system and fermentation method for comprehensive resource utilization. The outlet of the fermentation feed conveyor feeds the feed chute of the rotary arm fermentation machine, and the inlet of the fermentation feed conveyor is connected to the outlet of the wine lees squeezer and the bacterial powder adding device. The wine lees filtrate and wine lees leachate separated by the wine lees squeezer are mixed evenly with the fermented wine lees discharged from the rotary arm fermentation machine after passing through the leachate evaporation and concentration unit, and then enter the tube bundle dryer for drying. The hot air discharged from the top of the tube bundle dryer enters the cyclone dust collector for dust removal, and then enters the waste heat absorption tower to be washed and heat-exchanged layer by layer by hot water. The heated washing circulating water enters the hot side of the secondary waste heat exchanger and the primary waste heat exchanger in turn to heat the circulating preheated water on the cold side; the circulating preheated water preheats the hot air required for fermentation. The present invention adopts continuous fermentation and does not require the replenishment of bacterial strains. The drying system has low energy consumption and can recover heat and nutrients, reducing pollution to the environment.

The invention discloses a full-automatic continuous fermentation and distillation integrated system for apple distilled liquor and a control method of the full-automatic continuous fermentation and distillation integrated system, and relates to the technical field of wine brewing devices. Comprising a raw material processing unit, a buffer mixing tank, an intelligent blending buffer system, a fermentation tank and full-automatic distillation equipment, the raw material processing unit is used for conveying, cleaning and crushing apples and outputting fruit pulp, and the buffer mixing tank is used for temporarily storing the fruit pulp; the intelligent blending buffer system is used for adjusting the sugar degree and the pH value of the temporarily stored fruit pulp and transporting the adjusted fruit pulp into an idle fermentation tank, and after fermentation is completed, the fruit pulp is transported into full-automatic distillation equipment to be distilled, and wine liquid is obtained. According to the full-automatic continuous fermentation and distillation integrated system and the control method thereof, full-automatic operation of all links is achieved, and manual operation errors are avoided.

In some aspects, the present disclosure provides advantageous methods for preparing meat curing agents. In some embodiments, a process for continuously converting plant-based nitrates to nitrites comprises: inoculating a source material liquid containing nitrates with a bacterial culture capable of converting nitrates to nitrites; harvesting a first harvest volume of the source material liquid at a harvest rate when the nitrite in the source material liquid reaches a desired concentration; and replenishing the harvest volume of the source material liquid with additional source material liquid containing nitrates at a feed rate, wherein the harvest rate is higher than the feed rate.