30results about How to "Promote fermentation" patented technology

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 present application relates to the technical field of feed processing, and particularly relates to a preparation method of Maotai-flavor distiller's grains fermented feed, which comprises the following steps: drying treatment based on the moisture content of Maotai-flavor distiller's grains to obtain basic distiller's grains; determining the strain ratio of brewer's yeast, bacillus subtilis and aspergillus niger based on the tannin content of the basic distiller's grains to obtain a compound fermentation inoculant; inoculating and then fermenting; determining state evaluation parameters based on the total polyphenol accumulation rate, the dissolved oxygen consumption rate and the microbial activity index during the fermentation process, and performing qualified evaluation, and dynamically adjusting when unqualified; determining the fermentation end point based on the tannin degradation rate and the total polyphenol accumulation rate; and mixing the fermented distiller's grains with the basic feed at a mass ratio of 1% after low-temperature drying of the fermented distiller's grains. The present application realizes three-layer control of raw material evaluation, process control and end point determination, significantly improves the stability and content of functional active ingredients in the product, reduces the tannin and safety risk, and has a good intestinal health improvement effect on animals.

The present application belongs to the technical field of processing of by-products of brewing, and specifically discloses a method and device for reducing viscosity of distiller's grains based on enzyme treatment, which comprises the following steps: S1, dispersing the distiller's grains of liquor and mixing the auxiliary materials by means of a stirrer; S2, adjusting the pH of the uniformly dispersed and mixed distiller's grains by means of ammonia water, and then adding enzyme hydrolysate, and performing enzymolysis for 24 hours; and S3, further adding decomposition enzyme to perform enzymolysis into sugar. The method and device for reducing viscosity of distiller's grains based on enzyme treatment are used to disperse the distiller's grains and mix the auxiliary materials by means of the inner rotation and outer rotation modes of the stirrer, and to reduce the viscosity of the distiller's grains by means of a two-step enzyme hydrolysis method, so that the viscosity of the distiller's grains is reduced and the saccharification rate of the distiller's grains is improved, thereby laying a foundation for further fermentation of the distiller's grains to produce protein.

This invention discloses a method for preparing fermented Chinese medicine wine, comprising the following steps: S1: Preparing brewing grains by weight, soaking, steaming, and treating with saccharifying enzymes to obtain saccharified grains; S2: Treating Chinese medicinal materials with compound enzymes to obtain enzymatically hydrolyzed Chinese medicinal materials; S3: Mixing the saccharified grains and enzymatically hydrolyzed Chinese medicinal materials, adding yeast for anaerobic fermentation to obtain fermented material; S4: Distilling and aging the fermented material to obtain fermented Chinese medicine wine. The advantages of this invention compared to existing technologies are: providing a method for preparing fermented Chinese medicine wine that achieves efficient release and full conversion of the effective components of Chinese medicinal materials, ensuring a mellow flavor and stable quality.

The application discloses a kind of fermented feed fermented by three strains of probiotics of Bacillus YA ( Bacillus sp ), yeast Y ( Saccharomyces cerevisiae ) and capsular red bacteria R3 ( Rhodobacter capsulatus ), and preparation method and application in aquaculture thereof, and viable count is not less than 1×10 7 CFU / g.The fermented feed is replaced ordinary feed according to certain proportion, and feeding result shows that aquaculture water quality is significantly improved after adding fermented feed, and fish growth performance, digestive enzyme activity, immunity, and muscle quality are also obviously improved.Using the feed in suitable range can shorten growth cycle, reduce cost, improve aquaculture environment, reduce antibiotic use, and improve muscle quality of farmed animals, with good economic and ecological benefits, simple fermentation process, low cost, and suitable for industrial large-scale production.

The present application relates to sewage treatment technical field, especially to pig farm manure treatment system, including treatment pool, partition, feeding tank, discharge pipe and so on, at least two partitions are arranged in the treatment pool, the feeding tank is installed in the treatment pool, the discharge pipe is connected in the treatment pool, one side of the discharge pipe is communicated with the feeding tank, the other side of the discharge pipe is located in the filtered water storage space, the present application can stir the manure and sewage by the cooperation of feeding tank, discharge pipe, sliding plate I, sliding plate II, bellows, treatment mechanism, sealing mechanism, stirring and heating mechanism and moving mechanism, and can heat the sewage, so as to accelerate the biogas fermentation of manure and sewage, and can also automatically add carbon source or nitrogen source in the sewage in the closed environment, so as to maintain the suitable carbon-nitrogen ratio in the sewage, improve the gas production efficiency of the sewage, which is not only simple in operation, time and labor saving, but also can prevent the leakage of biogas in the sewage storage space.

The utility model relates to a leavening and baking integrated oven, which belongs to the technical field of ovens and comprises an oven body, a baking chamber is arranged on the upper portion inside the oven body, and two leavening chambers are arranged on the lower portion inside the oven body. Compared with the prior art, the oven has the advantages that the oven body integrates a traditional separated fermentation box and an oven, the fermentation function and the baking function can be integrated, the purpose of one machine with double purposes is achieved, the oven body adopts the vertical layered design, the problem of large occupied space of the oven body can be solved, and through the effect of the electric heating pipe, the oven body is more convenient to use. According to the baking device, baking food can be heated at a high temperature, waste heat in the baking chamber can be transmitted into the three branch pipes through the arrangement of the ventilation pipes and finally enters the corresponding fermentation chambers, yeast is more active in a warm environment, and through the mode, the baking waste heat can be reasonably utilized, so that energy consumption can be reduced.

The present application belongs to the technical field of daily chemicals, and particularly relates to a hair loss prevention composition containing burdock roots and a preparation method and application thereof. The hair loss prevention composition containing burdock roots is prepared from the following raw materials in parts by weight: 0.1-2 parts of burdock root extract, 0.1-2 parts of cypress leaf extract, 0.1-2 parts of Chinese aristolochia root extract, 0.1-2 parts of angelica root extract and 0.1-2 parts of honeysuckle flower extract. The composition is prepared from the components such as burdock root extract, cypress leaf extract, Chinese aristolochia root extract, angelica root extract and honeysuckle flower extract, can effectively prevent hair loss and inhibit inflammation, and prevent the generation of inflammation of the scalp.

This invention discloses a method for preparing bio-organic fertilizer that reduces the incidence of tobacco root-knot nematodes. The bio-organic fertilizer consists of a fermentation substrate, microbial inoculant, and earthworm castings in a mass ratio of 10:0.2-0.4:2-3. The invention uses Bacillus subtilis, Trichoderma harzianum, and Bacillus mucilaginosus in a mass ratio of 15-25:8-13:30-40 to prepare the microbial inoculant. The fermentation substrate and microbial inoculant are mixed and fermented. The fermentation substrate includes cow dung, wheat bran, straw, and earthworm castings. The bio-organic fertilizer of this invention can reduce the incidence of tobacco root-knot nematodes and also promotes tobacco root growth and increases tobacco leaf yield.

The application discloses an anaerobic treatment system and process suitable for wastewater containing high organic suspended matter, which comprises a water inlet assembly, a reactor, an internal circulation assembly, a water collecting and discharging assembly and an exhaust assembly; a group of metal membrane tubes are arranged in the reactor, and hydrolytic acid-producing bacteria are loaded in the metal membrane tubes; methanogenic bacteria are filled in the space outside the metal membrane tubes in the reactor; the reactor is connected with the water inlet assembly through the bottom of the metal membrane tubes; the internal circulation assembly is connected with the upper and lower parts of the reactor respectively; the water collecting and discharging assembly is arranged on the top of the reactor, and the reaction water is discharged from the reactor through a discharging pipeline; and the exhaust assembly is connected with the top of the reactor. The application can realize the effect that the acid-producing phase and the methanogenic phase are separated from each other and cooperate with each other, the effluent water is filtered through a membrane, and stable three-phase separation is realized. The application has the advantages of high anaerobic reaction efficiency, stable effluent water quality and high methane yield, and is especially suitable for anaerobic treatment of wastewater containing high organic suspended matter.

The utility model provides a biological fermentation tank for preparing a microbial agent. The biological fermentation tank comprises a tank body and a sealing cover mounted on the tank body in a sealing manner, the stirring mechanism is arranged in the tank body and is used for fully mixing the raw materials; a feeding pipe with a control valve and an observation hole are arranged on the sealing cover; the discharge pipe is communicated with the outlet end of the tank body; the discharging sealing cover is mounted at the outlet end of the discharging pipe and is driven by a hydraulic driving mechanism. According to the utility model, by additionally arranging the discharging sealing cover which is opened and closed by the hydraulic driving structure, the biological fermentation tank can generate certain air pressure in the fermentation process, the air pressure can be propped against the discharging sealing cover, and meanwhile, certain pressure is applied to the discharging sealing cover through the hydraulic driving mechanism, so that the discharging sealing cover can be prevented from being opened.

The utility model provides a turner which comprises a fixing frame, a front guide plate, a conveying belt, a plurality of idler wheels, a first motor, a second motor, a rotating disc and a blanking disc, the front guide plate is obliquely arranged and fixedly arranged at the downward position in front of the fixing frame, the conveying belt is rotationally arranged on the fixing frame, and the idler wheels are arranged on the conveying belt. The bearing face of the conveying belt is in lap joint with the front guide plate. The end, away from the front guide plate, of the bearing face of the conveying belt inclines upwards. The second motor is used for driving the conveying belt to rotate; a blanking hole is fixedly formed in the blanking disc, the blanking disc is located at the tail part of the conveying belt, and the blanking disc is fixedly connected with the fixed frame; and the rotating disc is positioned in the direction in which the blanking disc is positioned. The problems that the working depth is limited when the turning teeth are used, and the crushing effect of the turning teeth on the organic fertilizer is influenced when the water content of the organic fertilizer is high are solved, and the turning and raking quality is improved.

The utility model relates to a multi-layer silage silo, and belongs to the field of livestock feed storage. The device comprises a bottom surface and a plurality of parallel side walls which are vertically arranged, and a storage space is defined by the bottom surface and the side walls. Detachable hollow partition plates are arranged in the space to vertically divide the storage space into a plurality of storage layers. Corresponding notches are formed in the bottom face and the partition plate, the notch in the bottom face is communicated with the water storage pool, and the notch in the partition plate is communicated with the inner cavity and used for collecting and discharging percolate. A flow guide channel is formed in the side wall and connected with each sewage draining outlet, so that seepage is rapidly drained, and retention and mildew are prevented. And the porous cover plate and the filter holes can effectively prevent blockage and odor. Stairs are arranged on the side walls to facilitate operation. A closed oxygen-free environment is formed after the silage film is covered, feed fermentation is promoted, and the storage quality is improved. The device is compact in structure, efficient in liquid drainage and suitable for large-scale preparation and storage of silage.

The utility model discloses a kind of microbial organic fertilizer production devices for improving saline-alkali soil, including cylinder, feed inlet, discharge port, stirring mechanism, grinding mechanism, discharge mechanism, inner cylinder;Feed inlet is located at the top of cylinder;Discharge port is located on the side wall of cylinder close to bottom;Inner cylinder is fixed in the inside of cylinder, stirring mechanism, grinding mechanism are all installed in the inside of inner cylinder, stirring mechanism is located above grinding mechanism;Discharge mechanism is installed in the inside of cylinder below inner cylinder;Supporting plate is fixed on the side wall of inner cylinder, main shaft both ends are rotatably connected on cylinder and supporting plate respectively;Fixed frame is equipped with several, evenly fixed on the side wall of main shaft, stirring rod is rotatably connected on fixed frame;Stirring claw is connected on stirring rod.The utility model can carry out three-dimensional stirring to fertilizer;So that raw materials are evenly mixed, fermentation of raw materials is beneficial;It can cool down in the inside of inner cylinder, prevent temperature from being too high due to raw materials fermentation in the inside of inner cylinder.

This invention provides a wine aging device. At the new wine supply end, the wine to be aged is input into the aging loop pipeline. A circulating motor circulates the wine within the loop pipeline, allowing it to pass through a temperature-regulating tank and a wine molecule cutting device. The temperature-regulating tank simulates the temperature differences of the four seasons, adjusting the temperature of the flowing wine to match the temperature of different seasons, thereby accelerating fermentation. Subsequently, as the wine passes through the wine molecule cutting device, large wine molecules are broken down into smaller molecules until aging is complete. Afterward, the wine output end receives the aged wine, while the new wine supply end inputs another wine to be aged into the aging loop pipeline. This cyclical process promotes and accelerates fermentation, producing an aging and softening effect while simultaneously breaking down undesirable flavors. This invention belongs to the technical field of brewing equipment.

The application provides a soybean big cherry yoghourt production process, which comprises the following steps: preparing raw soybean milk and tartary buckwheat bud powder, stress treating big cherries and color protection to prepare fruit pulp, adding the tartary buckwheat bud powder into the raw soybean milk to carry out heat preservation and deodorization treatment, then adding skimmed milk powder, sucrose and glucose, uniformly mixing and sterilizing and cooling, adding the big cherry fruit pulp to homogenize, carrying out pasteurization and cooling, then inoculating bacteria powder, and carrying out fermentation and post-ripening to prepare the soybean big cherry yoghourt. The application adopts the tartary buckwheat bud powder to deodorize soybean, the soybean raw milk has rich soybean flavor, no fishy smell, delicate taste, no bitter and astringent taste, the yoghourt fermented from the big cherry fruit pulp treated by stress and color protection has the special soybean and cherry flavor, no fishy smell, pure lactic acid flavor, and the natural color of the big cherry is well preserved.

This invention provides a method and system for controlling the liquid level in penicillin fermentation based on visual recognition. By introducing visual AI detection technology into the field of penicillin fermentation production and combining it with the characteristics of fermentation liquid level, a complete set of reference standard selection schemes is innovatively constructed. It also proposes key indicators with specificity and innovation, such as "liquid level value", "rate value" and "fuzzy value", to provide quantitative basis for accurate identification and control of penicillin fermentation liquid level. It is linked with the control system to achieve automatic control, realizing accurate, stable and automated closed-loop control of penicillin fermentation liquid level.

The invention relates to the technical field of microorganisms, in particular to a multifunctional lactobacillus paracasei strain capable of promoting growth and development and application of the multifunctional lactobacillus paracasei strain. The Latin name of the multifunctional Lactobacillus paracasei strain is Lacticaseibacillus paracasei ZG1, the preservation number of the multifunctional Lactobacillus paracasei strain is CGMCC No.36863, the preservation date of the multifunctional Lactobacillus paracasei strain is December 5, 2025, and the preservation unit of the multifunctional Lactobacillus paracasei strain is China General Microbiological Culture Collection Center. Experiments prove that the multifunctional lactobacillus paracasei strain has the functions of promoting neurocognitive development, immune system maturation and bone growth, and can be added into an infant probiotic preparation to play a role in promoting growth and development. Compared with existing probiotics, the lactobacillus paracasei ZG1 has a multi-target and multi-system synergistic promotion function on growth and development, is expected to replace a traditional mixed probiotic scheme, and fundamentally solves the core problems of single function, mixed antagonism and the like of most of existing probiotics.

The utility model discloses a high-temperature aerobic fermentation turning device for biogas residues, which relates to the technical field of biogas residue treatment equipment and comprises a fermentation barrel, a gear stirring component is arranged on the inner side of the fermentation barrel, a motor gear component is arranged on one side of the bottom of the fermentation barrel, and a discharge electromagnetic valve is arranged on the other side of the bottom of the fermentation barrel. A spray pipe part is arranged in the gear stirring part; the bottom of the spray pipe part penetrates through the gear stirring part and is provided with a shunt pipe part; a temperature controller is arranged at one end of the shunt pipe part, and a water pump is arranged at the other end of the shunt pipe part; the other end of the temperature controller is fixedly communicated with a fan; by means of the structure, according to different requirements, air and water can be evenly conveyed into a biogas residue pile while biogas residues are stirred, better fermentation is facilitated, and the fermentation effect is improved.

The utility model belongs to the technical field of stirring structures, and particularly relates to mature vinegar fermentation stirring equipment which comprises a fermentation tank, a feed port and a discharge port are formed in the upper end and the lower end of the fermentation tank respectively, and the fermentation tank is provided with a fermentation mechanism; the fermentation mechanism comprises a material stirring assembly and a pipe set, the material stirring assembly is arranged at the upper end of the fermentation tank, the pipe set is arranged on the side portion of the fermentation tank and communicated with the interior of the fermentation tank, and through the arrangement of the material stirring assembly, in the vinegar fermentation processing process, a hydraulic cylinder in the material stirring assembly provides lifting power; materials on the upper side and the lower side in the fermentation tank can be fully mixed through cooperation of an extension rod and a material stirring rake, then the fermentation effect is improved, fermentation processing in the fermentation tank can be further promoted through arrangement of a pipe set, liquid circulation or oxygen injection in the fermentation tank can be conducted according to the actual fermentation process, and fermentation is promoted.

This application provides a *Hansophila barley* 3CC20 strain, its preparation method, and its applications. The *Hansophila barley* 3CC20 strain has the accession number CGMCC28442. A bacterial suspension or starter culture is prepared using *Hansophila barley* 3CC20. The suspension or starter culture is then applied to meat pieces or ham at an inoculation rate of 3% or 5% of the meat weight, and fermented in a constant temperature and humidity incubator for a predetermined time. This application enables the extraction of *Hansophila barley* 3CC20 from the surface and shallow layers near the surface of fermented meat products. Furthermore, *Hansophila barley* 3CC20 exhibits high salt tolerance, nitrate tolerance, acid tolerance, strong acid production capacity, and strong antioxidant properties. *Hansophila barley* 3CC20 promotes meat product fermentation, shortens the meat product production cycle, ensures the hygiene and safety of meat products, and maintains the original unique flavor of fermented meat products.

The utility model relates to the technical field of chemical equipment, in particular to a non-natural amino acid biological fermentation device, which not only increases the contact area of oxygen and a solution to conveniently meet the oxygen dissolving requirement in the whole fermentation process, but also can regulate and control the temperature and the air pressure in time to avoid influence on the fermentation effect. Comprising a fermentation tank; the system further comprises a temperature control mechanism, a stirring mechanism, a gas supply mechanism and an exhaust mechanism, the temperature control mechanism is installed on the fermentation tank and keeps the temperature in the fermentation tank constant, the stirring mechanism is installed on the temperature control mechanism and stirs a solution, and the gas supply mechanism is installed on the temperature control mechanism and conveys sterile oxygen into the fermentation tank. The exhaust mechanism is installed on the air supply mechanism and facilitates pressure relief.

The utility model relates to livestock and poultry manure treatment technical field, and disclose livestock and poultry manure comprehensive utilization treatment device, including processing jar and motor, motor fixed mounting is at the top of processing jar, still including stirring subassembly, including the output of fixed mounting in motor's pivot, pivot is circumferentially equidistant distribution and is provided with four groups of stirring vane, pivot is fixedly installed with two drive wheels, support subassembly, including four circumferentially equidistant distribution and fixed mounting in the inner wall of processing jar's support, four support between fixed mounting has cylinder, pivot sets up through cylinder, drive wheel is in the middle part of cylinder, in the utility model, start motor, drive pivot and stirring vane to the excrement stirring drive drive wheel rotation simultaneously, drive wheel every rotation 360 can drive rotary cutting assembly reciprocating activity once to the impurity in livestock and poultry manure carries out cutting, can cut the impurity in excrement dispersion, accelerate the fermentation of impurity, improve the quality of finished product organic fertilizer.

The utility model discloses integrated kitchen waste rapid fermentation treatment equipment, which belongs to the technical field of kitchen waste rapid fermentation, and adopts the technical scheme that the integrated kitchen waste rapid fermentation treatment equipment comprises a mounting frame, the front side of the mounting frame is movably connected with a fermentation mechanism, and the right side of the fermentation mechanism is fixedly connected with an auxiliary mechanism; the inner wall of the mounting frame is fixedly connected with a conveying mechanism; the fermentation mechanism comprises a servo motor, a fermentation bin, a fixed shaft, a stirring rod, a heating pipe and a discharging pipe, the fermentation bin is movably connected to the front side of the mounting frame, the servo motor is fixedly connected to the top of the fermentation bin, the stirring rod and the heating pipe in the fermentation mechanism are arranged, the stirring rod is driven by the servo motor to stir kitchen waste, and the stirring rod is driven by the fixed shaft to stir the kitchen waste; the materials and the microbial agent are fully mixed, fermentation is promoted, the heating pipe increases the temperature in the fermentation bin, a proper growth environment is provided for microorganisms, the fermentation speed is increased, and the fermentation efficiency is improved.

The utility model relates to the field of wine brewing industry, in particular to an automatic yellow water pumping device which comprises a yellow water pipe, a control module, a flow sensor and a pumping portion, the flow sensor and the pumping portion are electrically connected with the control module, the inlet end of the yellow water pipe extends into a yellow water tank, and the water outlet end of the yellow water pipe is communicated with the inlet end of the pumping portion. The inlet end of the yellow water pipe is further provided with a visible filtering unit, the filtering unit comprises a connecting part used for being detachably connected with the yellow water pipe and a filter screen part installed on the connecting part, the flow sensor is arranged at the outlet end of the pumping part, and the flow sensor transmits detection signals to the control module in real time; the utility model provides the extraction device which can accurately control the automatic yellow water extraction process and is not easy to block.

This utility model discloses a toilet for camping vehicles, belonging to the technical field of camping equipment. It mainly includes a toilet base, with a toilet trough rotatably connected to the upper part of the base. The toilet trough contains a collection hopper for receiving liquid waste and a discharge trough for receiving solid waste. A discharge channel is provided on the discharge trough. The toilet base contains a removable hopper and a storage tank. The hopper is located below the toilet trough and corresponds to the discharge channel. An outlet is provided on the collection hopper, which communicates with the storage tank. All components of this utility model are integrated into the toilet base, occupying little space. Solid waste is treated through biomass fermentation, while liquid waste is centrally stored and discharged, reducing reliance on external sewage facilities. It does not need to be fixed in one place and can be moved as needed. This utility model is mainly used in confined environments such as camping vehicles.

The invention discloses a chenopodium quinoa ryegrass strip-shaped composite planting and silage processing method which comprises the following steps: strip-shaped composite planting: in mid-to-late October, sowing ryegrass in winter 70 days, and sowing 10 rows of ryegrass at certain intervals after each 10 rows of ryegrass are sown; in the first ten days of March of the second year, eight rows of feed quinoa are sown through a sower, and the eight rows are located in the area between two adjacent 10 rows of ryegrass 70; silage is harvested, in late June, 70 forage grass of ryegrass is naturally mature, and plants are dry and lose water; the ryegrass 7 and the feed quinoa are harvested in a mixed mode at the same time; conveying the mixed and harvested ryegrass winter grass 7 and the feed quinoa into a crushing and mixing machine, and crushing and mixing the ryegrass winter grass 7 and the feed quinoa; and supplying the crushed and mixed mixed silage into a compression extrusion machine, and performing extrusion compression. According to the method, various factors influencing silage reach an expected range, and the quality, yield, taste and the like of the silage are improved. The method is suitable for the technical field of silage planting and processing.

The application discloses a kind of sea cucumber peptide product's extraction purification processing equipment, it is related to sea cucumber peptide product processing equipment technical field, solve the sea cucumber original pulp in the middle of fermentation cylinder cannot be fully touched and grinded, and the sea cucumber original pulp grinds in the process of being short in fermentation cylinder and stays, so that the sea cucumber original pulp particles in fermentation cylinder because the technical problem of insufficient grinding;Including: fermentation cylinder, the top of fermentation cylinder is provided with feed inlet;Multiple groups of guide grinding mechanism are arranged in the inside of fermentation cylinder and installed, the guide grinding mechanism includes the conical guide platform that the sea cucumber original pulp that falls in the inside of fermentation cylinder is guided;The sea cucumber original pulp in the present application can be guided to side grinding wheel in fermentation cylinder, the situation that the sea cucumber original pulp cannot be grinded near the middle position does not appear, improve the sea cucumber original pulp particle degree of thickness, facilitate the sea cucumber original pulp fully fermented, while the sea cucumber original pulp adhered on conical guide platform is scraped to side grinding wheel, facilitate the sea cucumber original pulp fully grinded.

The utility model provides a kind of polyglutamic acid fermentation device, including fermentation tank body, the top of the fermentation tank body is equipped with sealing cover, the below of the fermentation tank body is equipped with the oxygen supply mechanism of controllable temperature, the oxygen supply mechanism includes temperature control box, the temperature control box is installed in fermentation tank body bottom, the middle part of the temperature control box cavity is equipped with partition plate, the both ends of the temperature control box cavity are equipped with electric heating tube and condenser tube respectively, the both ends of the temperature control box cavity are equipped with protective shell, and electric heating tube and condenser tube are located in protective shell cavity, oxygen supply mechanism can control the temperature of air into fermentation tank body, avoid the air flowing in fermentation tank body and conveying air temperature lower, the temperature of polyglutamic acid fermentation in fermentation tank body reduces, to affect the quality of polyglutamic acid fermentation, while the oxygen supply temperature of fermentation tank body can be reduced, with cold air mode synchronous oxygen supply and cooling work.